Update menuhandler tests to use the memdb instead of dbmocks

Reviewed-on: urdt/ussd#150

.env.example

@@ -12,6 +12,7 @@ DB_SSLMODE=disable
 DB_TIMEZONE=Africa/Nairobi
 
 #External API Calls
-CREATE_ACCOUNT_URL=https://custodial.sarafu.africa/api/account/create
+CREATE_ACCOUNT_URL=http://localhost:5003/api/v2/account/create
 TRACK_STATUS_URL=https://custodial.sarafu.africa/api/track/
 BALANCE_URL=https://custodial.sarafu.africa/api/account/status/
+TRACK_URL=http://localhost:5003/api/v2/account/status

common/hex.go

@@ -0,0 +1,18 @@
+package common
+
+import (
+	"encoding/hex"
+)
+
+func NormalizeHex(s string) (string, error) {
+	if len(s) >= 2 {
+		if s[:2] == "0x" {
+			s = s[2:]
+		}
+	}
+	r, err := hex.DecodeString(s)
+	if err != nil {
+		return "", err
+	}
+	return hex.EncodeToString(r), nil
+}

config/config.go

@@ -6,11 +6,13 @@ var (
 	CreateAccountURL string
 	TrackStatusURL   string
 	BalanceURL       string
+    TrackURL         string
 )
 
 // LoadConfig initializes the configuration values after environment variables are loaded.
 func LoadConfig() {
-	CreateAccountURL = initializers.GetEnv("CREATE_ACCOUNT_URL", "https://custodial.sarafu.africa/api/account/create")
+	CreateAccountURL = initializers.GetEnv("CREATE_ACCOUNT_URL", "http://localhost:5003/api/v2/account/create")
 	TrackStatusURL = initializers.GetEnv("TRACK_STATUS_URL", "https://custodial.sarafu.africa/api/track/")
 	BalanceURL = initializers.GetEnv("BALANCE_URL", "https://custodial.sarafu.africa/api/account/status/")
+    TrackURL = initializers.GetEnv("TRACK_URL", "http://localhost:5003/api/v2/account/status")
 }

go.mod

@@ -1,27 +1,43 @@
 module git.grassecon.net/urdt/ussd
 
-go 1.22.6
+go 1.23.0
+
+toolchain go1.23.2
 
 require (
 	git.defalsify.org/vise.git v0.2.1-0.20241017112704-307fa6fcdc6b
 	github.com/alecthomas/assert/v2 v2.2.2
+	github.com/grassrootseconomics/eth-custodial v1.3.0-beta
 	github.com/peteole/testdata-loader v0.3.0
 	gopkg.in/leonelquinteros/gotext.v1 v1.3.1
 )
 
-require github.com/joho/godotenv v1.5.1 // indirect
+require github.com/grassrootseconomics/ussd-data-service v0.0.0-20241003123429-4904b4438a3a // indirect
+
+require (
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/pgx/v5 v5.7.1 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
+	github.com/joho/godotenv v1.5.1
+	github.com/kr/text v0.2.0 // indirect
+	github.com/rogpeppe/go-internal v1.13.1 // indirect
+	golang.org/x/crypto v0.27.0 // indirect
+	golang.org/x/sync v0.8.0 // indirect
+	golang.org/x/text v0.18.0 // indirect
+)
 
 require (
 	github.com/alecthomas/participle/v2 v2.0.0 // indirect
 	github.com/alecthomas/repr v0.2.0 // indirect
 	github.com/barbashov/iso639-3 v0.0.0-20211020172741-1f4ffb2d8d1c // indirect
-	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc // indirect
 	github.com/fxamacker/cbor/v2 v2.4.0 // indirect
 	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/graygnuorg/go-gdbm v0.0.0-20220711140707-71387d66dce4 // indirect
 	github.com/hexops/gotextdiff v1.0.3 // indirect
 	github.com/mattn/kinako v0.0.0-20170717041458-332c0a7e205a // indirect
-	github.com/pmezard/go-difflib v1.0.0 // indirect
+	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
 	github.com/stretchr/testify v1.9.0
 	github.com/x448/float16 v0.8.4 // indirect

go.sum

@@ -1,7 +1,3 @@
-git.defalsify.org/vise.git v0.1.0-rc.3.0.20240923162317-c20d557a3dbb h1:6P4kxihcwMjDKzvUFC6t2zGNb7MDW+l/ACGlSAN1N8Y=
-git.defalsify.org/vise.git v0.1.0-rc.3.0.20240923162317-c20d557a3dbb/go.mod h1:JDguWmcoWBdsnpw7PUjVZAEpdC/ubBmjdUBy3tjP63M=
-git.defalsify.org/vise.git v0.2.0 h1:X2ZgiGRq4C+9qOlDMP0b/oE5QHjVQNT4aEFZB88ST0Q=
-git.defalsify.org/vise.git v0.2.0/go.mod h1:JDguWmcoWBdsnpw7PUjVZAEpdC/ubBmjdUBy3tjP63M=
 git.defalsify.org/vise.git v0.2.1-0.20241017112704-307fa6fcdc6b h1:dxBplsIlzJHV+5EH+gzB+w08Blt7IJbb2jeRe1OEjLU=
 git.defalsify.org/vise.git v0.2.1-0.20241017112704-307fa6fcdc6b/go.mod h1:jyBMe1qTYUz3mmuoC9JQ/TvFeW0vTanCUcPu3H8p4Ck=
 github.com/alecthomas/assert/v2 v2.2.2 h1:Z/iVC0xZfWTaFNE6bA3z07T86hd45Xe2eLt6WVy2bbk=
@@ -12,33 +8,67 @@ github.com/alecthomas/repr v0.2.0 h1:HAzS41CIzNW5syS8Mf9UwXhNH1J9aix/BvDRf1Ml2Yk
 github.com/alecthomas/repr v0.2.0/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
 github.com/barbashov/iso639-3 v0.0.0-20211020172741-1f4ffb2d8d1c h1:H9Nm+I7Cg/YVPpEV1RzU3Wq2pjamPc/UtHDgItcb7lE=
 github.com/barbashov/iso639-3 v0.0.0-20211020172741-1f4ffb2d8d1c/go.mod h1:rGod7o6KPeJ+hyBpHfhi4v7blx9sf+QsHsA7KAsdN6U=
-github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
-github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc h1:U9qPSI2PIWSS1VwoXQT9A3Wy9MM3WgvqSxFWenqJduM=
+github.com/davecgh/go-spew v1.1.2-0.20180830191138-d8f796af33cc/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/fxamacker/cbor/v2 v2.4.0 h1:ri0ArlOR+5XunOP8CRUowT0pSJOwhW098ZCUyskZD88=
 github.com/fxamacker/cbor/v2 v2.4.0/go.mod h1:TA1xS00nchWmaBnEIxPSE5oHLuJBAVvqrtAnWBwBCVo=
 github.com/gofrs/uuid v4.4.0+incompatible h1:3qXRTX8/NbyulANqlc0lchS1gqAVxRgsuW1YrTJupqA=
 github.com/gofrs/uuid v4.4.0+incompatible/go.mod h1:b2aQJv3Z4Fp6yNu3cdSllBxTCLRxnplIgP/c0N/04lM=
+github.com/grassrootseconomics/eth-custodial v1.3.0-beta h1:twrMBhl89GqDUL9PlkzQxMP/6OST1BByrNDj+rqXDmU=
+github.com/grassrootseconomics/eth-custodial v1.3.0-beta/go.mod h1:7uhRcdnJplX4t6GKCEFkbeDhhjlcaGJeJqevbcvGLZo=
+github.com/grassrootseconomics/ussd-data-service v0.0.0-20241003123429-4904b4438a3a h1:q/YH7nE2j8epNmFnTu0tU1vwtCxtQ6nH+d7hRVV5krU=
+github.com/grassrootseconomics/ussd-data-service v0.0.0-20241003123429-4904b4438a3a/go.mod h1:hdKaKwqiW6/kphK4j/BhmuRlZDLo1+DYo3gYw5O0siw=
 github.com/graygnuorg/go-gdbm v0.0.0-20220711140707-71387d66dce4 h1:U4kkNYryi/qfbBF8gh7Vsbuz+cVmhf5kt6pE9bYYyLo=
 github.com/graygnuorg/go-gdbm v0.0.0-20220711140707-71387d66dce4/go.mod h1:zpZDgZFzeq9s0MIeB1P50NIEWDFFHSFBohI/NbaTD/Y=
 github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
 github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
+github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
+github.com/jackc/pgpassfile v1.0.0/go.mod h1:CEx0iS5ambNFdcRtxPj5JhEz+xB6uRky5eyVu/W2HEg=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7UlwOQYpKFhBabPMi4aNAfoODPEFNiAnClxo=
+github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
+github.com/jackc/pgx/v5 v5.7.1 h1:x7SYsPBYDkHDksogeSmZZ5xzThcTgRz++I5E+ePFUcs=
+github.com/jackc/pgx/v5 v5.7.1/go.mod h1:e7O26IywZZ+naJtWWos6i6fvWK+29etgITqrqHLfoZA=
+github.com/jackc/puddle/v2 v2.2.2 h1:PR8nw+E/1w0GLuRFSmiioY6UooMp6KJv0/61nB7icHo=
+github.com/jackc/puddle/v2 v2.2.2/go.mod h1:vriiEXHvEE654aYKXXjOvZM39qJ0q+azkZFrfEOc3H4=
 github.com/joho/godotenv v1.5.1 h1:7eLL/+HRGLY0ldzfGMeQkb7vMd0as4CfYvUVzLqw0N0=
 github.com/joho/godotenv v1.5.1/go.mod h1:f4LDr5Voq0i2e/R5DDNOoa2zzDfwtkZa6DnEwAbqwq4=
+github.com/kr/pretty v0.3.0 h1:WgNl7dwNpEZ6jJ9k1snq4pZsg7DOEN8hP9Xw0Tsjwk0=
+github.com/kr/pretty v0.3.0/go.mod h1:640gp4NfQd8pI5XOwp5fnNeVWj67G7CFk/SaSQn7NBk=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
 github.com/mattn/kinako v0.0.0-20170717041458-332c0a7e205a h1:0Q3H0YXzMHiciXtRcM+j0jiCe8WKPQHoRgQiRTnfcLY=
 github.com/mattn/kinako v0.0.0-20170717041458-332c0a7e205a/go.mod h1:CdTTBOYzS5E4mWS1N8NWP6AHI19MP0A2B18n3hLzRMk=
+github.com/pashagolub/pgxmock/v4 v4.3.0 h1:DqT7fk0OCK6H0GvqtcMsLpv8cIwWqdxWgfZNLeHCb/s=
+github.com/pashagolub/pgxmock/v4 v4.3.0/go.mod h1:9VoVHXwS3XR/yPtKGzwQvwZX1kzGB9sM8SviDcHDa3A=
 github.com/peteole/testdata-loader v0.3.0 h1:8jckE9KcyNHgyv/VPoaljvKZE0Rqr8+dPVYH6rfNr9I=
 github.com/peteole/testdata-loader v0.3.0/go.mod h1:Mt0ZbRtb56u8SLJpNP+BnQbENljMorYBpqlvt3cS83U=
-github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 h1:Jamvg5psRIccs7FGNTlIRMkT8wgtp5eCXdBlqhYGL6U=
+github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/rogpeppe/go-internal v1.13.1 h1:KvO1DLK/DRN07sQ1LQKScxyZJuNnedQ5/wKSR38lUII=
+github.com/rogpeppe/go-internal v1.13.1/go.mod h1:uMEvuHeurkdAXX61udpOXGD/AzZDWNMNyH2VO9fmH0o=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
 github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
+github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
 github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
 github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
 github.com/x448/float16 v0.8.4 h1:qLwI1I70+NjRFUR3zs1JPUCgaCXSh3SW62uAKT1mSBM=
 github.com/x448/float16 v0.8.4/go.mod h1:14CWIYCyZA/cWjXOioeEpHeN/83MdbZDRQHoFcYsOfg=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+golang.org/x/crypto v0.27.0 h1:GXm2NjJrPaiv/h1tb2UH8QfgC/hOf/+z0p6PT8o1w7A=
+golang.org/x/crypto v0.27.0/go.mod h1:1Xngt8kV6Dvbssa53Ziq6Eqn0HqbZi5Z6R0ZpwQzt70=
+golang.org/x/sync v0.8.0 h1:3NFvSEYkUoMifnESzZl15y791HH1qU2xm6eCJU5ZPXQ=
+golang.org/x/sync v0.8.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
+golang.org/x/text v0.18.0 h1:XvMDiNzPAl0jr17s6W9lcaIhGUfUORdGCNsuLmPG224=
+golang.org/x/text v0.18.0/go.mod h1:BuEKDfySbSR4drPmRPG/7iBdf8hvFMuRexcpahXilzY=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
 gopkg.in/leonelquinteros/gotext.v1 v1.3.1 h1:8d9/fdTG0kn/B7NNGV1BsEyvektXFAbkMsTZS2sFSCc=
 gopkg.in/leonelquinteros/gotext.v1 v1.3.1/go.mod h1:X1WlGDeAFIYsW6GjgMm4VwUwZ2XjI7Zan2InxSUQWrU=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
 gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
 gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

internal/handlers/handlerservice.go

@@ -61,8 +61,8 @@ func (ls *LocalHandlerService) GetHandler(accountService server.AccountServiceIn
 	ussdHandlers = ussdHandlers.WithPersister(ls.Pe)
 	ls.DbRs.AddLocalFunc("set_language", ussdHandlers.SetLanguage)
 	ls.DbRs.AddLocalFunc("create_account", ussdHandlers.CreateAccount)
-	ls.DbRs.AddLocalFunc("save_pin", ussdHandlers.SavePin)
-	ls.DbRs.AddLocalFunc("verify_pin", ussdHandlers.VerifyPin)
+	ls.DbRs.AddLocalFunc("save_temporary_pin", ussdHandlers.SaveTemporaryPin)
+	ls.DbRs.AddLocalFunc("verify_create_pin", ussdHandlers.VerifyCreatePin)
 	ls.DbRs.AddLocalFunc("check_identifier", ussdHandlers.CheckIdentifier)
 	ls.DbRs.AddLocalFunc("check_account_status", ussdHandlers.CheckAccountStatus)
 	ls.DbRs.AddLocalFunc("authorize_account", ussdHandlers.Authorize)
@@ -89,11 +89,15 @@ func (ls *LocalHandlerService) GetHandler(accountService server.AccountServiceIn
 	ls.DbRs.AddLocalFunc("verify_yob", ussdHandlers.VerifyYob)
 	ls.DbRs.AddLocalFunc("reset_incorrect_date_format", ussdHandlers.ResetIncorrectYob)
 	ls.DbRs.AddLocalFunc("initiate_transaction", ussdHandlers.InitiateTransaction)
-	ls.DbRs.AddLocalFunc("save_temporary_pin", ussdHandlers.SaveTemporaryPin)
 	ls.DbRs.AddLocalFunc("verify_new_pin", ussdHandlers.VerifyNewPin)
 	ls.DbRs.AddLocalFunc("confirm_pin_change", ussdHandlers.ConfirmPinChange)
 	ls.DbRs.AddLocalFunc("quit_with_help", ussdHandlers.QuitWithHelp)
 	ls.DbRs.AddLocalFunc("fetch_custodial_balances", ussdHandlers.FetchCustodialBalances)
+	ls.DbRs.AddLocalFunc("set_default_voucher", ussdHandlers.SetDefaultVoucher)
+	ls.DbRs.AddLocalFunc("check_vouchers", ussdHandlers.CheckVouchers)
+	ls.DbRs.AddLocalFunc("get_vouchers", ussdHandlers.GetVoucherList)
+	ls.DbRs.AddLocalFunc("view_voucher", ussdHandlers.ViewVoucher)
+	ls.DbRs.AddLocalFunc("set_voucher", ussdHandlers.SetVoucher)
 
 	return ussdHandlers, nil
 }

internal/handlers/server/accountservice.go

@@ -1,29 +1,35 @@
 package server
 
 import (
+	"context"
 	"encoding/json"
+	"errors"
+	"fmt"
 	"io"
 	"net/http"
-	"time"
+	"os"
 
 	"git.grassecon.net/urdt/ussd/config"
 	"git.grassecon.net/urdt/ussd/internal/models"
+	"github.com/grassrootseconomics/eth-custodial/pkg/api"
+)
+
+var (
+	okResponse  api.OKResponse
+	errResponse api.ErrResponse
 )
 
 type AccountServiceInterface interface {
-	CheckBalance(publicKey string) (*models.BalanceResponse, error)
-	CreateAccount() (*models.AccountResponse, error)
-	CheckAccountStatus(trackingId string) (*models.TrackStatusResponse, error)
+	CheckBalance(ctx context.Context, publicKey string) (*models.BalanceResponse, error)
+	CreateAccount(ctx context.Context) (*api.OKResponse, error)
+	CheckAccountStatus(ctx context.Context, trackingId string) (*models.TrackStatusResponse, error)
+	TrackAccountStatus(ctx context.Context, publicKey string) (*api.OKResponse, error)
+	FetchVouchers(ctx context.Context, publicKey string) (*models.VoucherHoldingResponse, error)
 }
 
 type AccountService struct {
 }
 
-type TestAccountService struct {
-}
-
-// CheckAccountStatus retrieves the status of an account transaction based on the provided tracking ID.
-//
 // Parameters:
 //   - trackingId: A unique identifier for the account.This should be obtained from a previous call to
 //     CreateAccount or a similar function that returns an AccountResponse. The `trackingId` field in the
@@ -32,9 +38,9 @@ type TestAccountService struct {
 // Returns:
 //   - string: The status of the transaction as a string. If there is an error during the request or processing, this will be an empty string.
 //   - error: An error if any occurred during the HTTP request, reading the response, or unmarshalling the JSON data.
-//     If no error occurs, this will be nil.
-func (as *AccountService) CheckAccountStatus(trackingId string) (*models.TrackStatusResponse, error) {
-	resp, err := http.Get(config.TrackStatusURL + trackingId)
+//     If no error occurs, this will be nil
+func (as *AccountService) CheckAccountStatus(ctx context.Context, trackingId string) (*models.TrackStatusResponse, error) {
+	resp, err := http.Get(config.BalanceURL + trackingId)
 	if err != nil {
 		return nil, err
 	}
@@ -44,18 +50,61 @@ func (as *AccountService) CheckAccountStatus(trackingId string) (*models.TrackSt
 	if err != nil {
 		return nil, err
 	}
+
 	var trackResp models.TrackStatusResponse
 	err = json.Unmarshal(body, &trackResp)
 	if err != nil {
 		return nil, err
 	}
 	return &trackResp, nil
+
+}
+
+func (as *AccountService) TrackAccountStatus(ctx context.Context, publicKey string) (*api.OKResponse, error) {
+	var err error
+	// Construct the URL with the path parameter
+	url := fmt.Sprintf("%s/%s", config.TrackURL, publicKey)
+	req, err := http.NewRequest("GET", url, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("X-GE-KEY", "xd")
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		return nil, err
+	}
+	defer resp.Body.Close()
+
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		errResponse.Description = err.Error()
+		return nil, err
+	}
+	if resp.StatusCode >= http.StatusBadRequest {
+		err := json.Unmarshal([]byte(body), &errResponse)
+		if err != nil {
+			return nil, err
+		}
+		return nil, errors.New(errResponse.Description)
+	}
+	err = json.Unmarshal([]byte(body), &okResponse)
+	if err != nil {
+		return nil, err
+	}
+	if len(okResponse.Result) == 0 {
+		return nil, errors.New("Empty api result")
+	}
+	return &okResponse, nil
+
 }
 
 // CheckBalance retrieves the balance for a given public key from the custodial balance API endpoint.
 // Parameters:
 //   - publicKey: The public key associated with the account whose balance needs to be checked.
-func (as *AccountService) CheckBalance(publicKey string) (*models.BalanceResponse, error) {
+func (as *AccountService) CheckBalance(ctx context.Context, publicKey string) (*models.BalanceResponse, error) {
 	resp, err := http.Get(config.BalanceURL + publicKey)
 	if err != nil {
 		return nil, err
@@ -79,75 +128,58 @@ func (as *AccountService) CheckBalance(publicKey string) (*models.BalanceRespons
 //     If there is an error during the request or processing, this will be nil.
 //   - error: An error if any occurred during the HTTP request, reading the response, or unmarshalling the JSON data.
 //     If no error occurs, this will be nil.
-func (as *AccountService) CreateAccount() (*models.AccountResponse, error) {
-	resp, err := http.Post(config.CreateAccountURL, "application/json", nil)
+func (as *AccountService) CreateAccount(ctx context.Context) (*api.OKResponse, error) {
+	var err error
+
+	// Create a new request
+	req, err := http.NewRequest("POST", config.CreateAccountURL, nil)
 	if err != nil {
 		return nil, err
 	}
+	req.Header.Set("Content-Type", "application/json")
+	req.Header.Set("X-GE-KEY", "xd")
+
+	resp, err := http.DefaultClient.Do(req)
+	if err != nil {
+		errResponse.Description = err.Error()
+		return nil, err
+	}
 	defer resp.Body.Close()
+
 	body, err := io.ReadAll(resp.Body)
 	if err != nil {
 		return nil, err
 	}
-	var accountResp models.AccountResponse
-	err = json.Unmarshal(body, &accountResp)
+	if resp.StatusCode >= http.StatusBadRequest {
+		err := json.Unmarshal([]byte(body), &errResponse)
+		if err != nil {
+			return nil, err
+		}
+		return nil, errors.New(errResponse.Description)
+	}
+	err = json.Unmarshal([]byte(body), &okResponse)
 	if err != nil {
 		return nil, err
 	}
-	return &accountResp, nil
-}
-
-func (tas *TestAccountService) CreateAccount() (*models.AccountResponse, error) {
-	return &models.AccountResponse{
-		Ok: true,
-		Result: struct {
-			CustodialId json.Number `json:"custodialId"`
-			PublicKey   string      `json:"publicKey"`
-			TrackingId  string      `json:"trackingId"`
-		}{
-			CustodialId: json.Number("182"),
-			PublicKey:   "0x48ADca309b5085852207FAaf2816eD72B52F527C",
-			TrackingId:  "28ebe84d-b925-472c-87ae-bbdfa1fb97be",
-		},
-	}, nil
-}
-
-func (tas *TestAccountService) CheckBalance(publicKey string) (*models.BalanceResponse, error) {
-
-	balanceResponse := &models.BalanceResponse{
-		Ok: true,
-		Result: struct {
-			Balance string      `json:"balance"`
-			Nonce   json.Number `json:"nonce"`
-		}{
-			Balance: "0.003 CELO",
-			Nonce:   json.Number("0"),
-		},
+	if len(okResponse.Result) == 0 {
+		return nil, errors.New("Empty api result")
 	}
-
-	return balanceResponse, nil
+	return &okResponse, nil
 }
 
-func (tas *TestAccountService) CheckAccountStatus(trackingId string) (*models.TrackStatusResponse, error) {
-	trackResponse := &models.TrackStatusResponse{
-		Ok: true,
-		Result: struct {
-			Transaction struct {
-				CreatedAt     time.Time   "json:\"createdAt\""
-				Status        string      "json:\"status\""
-				TransferValue json.Number "json:\"transferValue\""
-				TxHash        string      "json:\"txHash\""
-				TxType        string      "json:\"txType\""
-			}
-		}{
-			Transaction: models.Transaction{
-				CreatedAt:     time.Now(),
-				Status:        "SUCCESS",
-				TransferValue: json.Number("0.5"),
-				TxHash:        "0x123abc456def",
-				TxType:        "transfer",
-			},
-		},
+// FetchVouchers retrieves the token holdings for a given public key from the custodial holdings API endpoint
+// Parameters:
+//   - publicKey: The public key associated with the account.
+func (as *AccountService) FetchVouchers(ctx context.Context, publicKey string) (*models.VoucherHoldingResponse, error) {
+	file, err := os.Open("sample_tokens.json")
+	if err != nil {
+		return nil, err
 	}
-	return trackResponse, nil
+	defer file.Close()
+	var holdings models.VoucherHoldingResponse
+
+	if err := json.NewDecoder(file).Decode(&holdings); err != nil {
+		return nil, err
+	}
+	return &holdings, nil
 }

internal/handlers/ussd/menuhandler.go

@@ -10,6 +10,7 @@ import (
 	"strings"
 
 	"git.defalsify.org/vise.git/asm"
+	"github.com/grassrootseconomics/eth-custodial/pkg/api"
 
 	"git.defalsify.org/vise.git/cache"
 	"git.defalsify.org/vise.git/db"
@@ -18,15 +19,20 @@ import (
 	"git.defalsify.org/vise.git/persist"
 	"git.defalsify.org/vise.git/resource"
 	"git.defalsify.org/vise.git/state"
+	"git.grassecon.net/urdt/ussd/common"
 	"git.grassecon.net/urdt/ussd/internal/handlers/server"
 	"git.grassecon.net/urdt/ussd/internal/utils"
 	"gopkg.in/leonelquinteros/gotext.v1"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
 )
 
 var (
 	logg           = logging.NewVanilla().WithDomain("ussdmenuhandler")
 	scriptDir      = path.Join("services", "registration")
 	translationDir = path.Join(scriptDir, "locale")
+	okResponse     *api.OKResponse
+	errResponse    *api.ErrResponse
 )
 
 // FlagManager handles centralized flag management
@@ -59,6 +65,7 @@ type Handlers struct {
 	userdataStore  utils.DataStore
 	flagManager    *asm.FlagParser
 	accountService server.AccountServiceInterface
+	prefixDb       storage.PrefixDb
 }
 
 func NewHandlers(appFlags *asm.FlagParser, userdataStore db.Db, accountService server.AccountServiceInterface) (*Handlers, error) {
@@ -68,10 +75,14 @@ func NewHandlers(appFlags *asm.FlagParser, userdataStore db.Db, accountService s
 	userDb := &utils.UserDataStore{
 		Db: userdataStore,
 	}
+	// Instantiate the SubPrefixDb with "vouchers" prefix
+	prefixDb := storage.NewSubPrefixDb(userdataStore, []byte("vouchers"))
+
 	h := &Handlers{
 		userdataStore:  userDb,
 		flagManager:    appFlags,
 		accountService: accountService,
+		prefixDb:       prefixDb,
 	}
 	return h, nil
 }
@@ -136,23 +147,35 @@ func (h *Handlers) SetLanguage(ctx context.Context, sym string, input []byte) (r
 }
 
 func (h *Handlers) createAccountNoExist(ctx context.Context, sessionId string, res *resource.Result) error {
-	accountResp, err := h.accountService.CreateAccount()
-	data := map[utils.DataTyp]string{
-		utils.DATA_TRACKING_ID:  accountResp.Result.TrackingId,
-		utils.DATA_PUBLIC_KEY:   accountResp.Result.PublicKey,
-		utils.DATA_CUSTODIAL_ID: accountResp.Result.CustodialId.String(),
+	flag_account_created, _ := h.flagManager.GetFlag("flag_account_created")
+	okResponse, err := h.accountService.CreateAccount(ctx)
+	if err != nil {
+		return err
 	}
+	trackingId := okResponse.Result["trackingId"].(string)
+	publicKey := okResponse.Result["publicKey"].(string)
 
+	data := map[utils.DataTyp]string{
+		utils.DATA_TRACKING_ID: trackingId,
+		utils.DATA_PUBLIC_KEY:  publicKey,
+	}
+	store := h.userdataStore
 	for key, value := range data {
-		store := h.userdataStore
-		err := store.WriteEntry(ctx, sessionId, key, []byte(value))
+		err = store.WriteEntry(ctx, sessionId, key, []byte(value))
 		if err != nil {
 			return err
 		}
 	}
-	flag_account_created, _ := h.flagManager.GetFlag("flag_account_created")
+	publicKeyNormalized, err := common.NormalizeHex(publicKey)
+	if err != nil {
+		return err
+	}
+	err = store.WriteEntry(ctx, publicKeyNormalized, utils.DATA_PUBLIC_KEY_REVERSE, []byte(sessionId))
+	if err != nil {
+		return err
+	}
 	res.FlagSet = append(res.FlagSet, flag_account_created)
-	return err
+	return nil
 
 }
 
@@ -180,34 +203,6 @@ func (h *Handlers) CreateAccount(ctx context.Context, sym string, input []byte)
 	return res, nil
 }
 
-// SavePin persists the user's PIN choice into the filesystem
-func (h *Handlers) SavePin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
-	var res resource.Result
-	var err error
-
-	sessionId, ok := ctx.Value("SessionId").(string)
-	if !ok {
-		return res, fmt.Errorf("missing session")
-	}
-
-	flag_incorrect_pin, _ := h.flagManager.GetFlag("flag_incorrect_pin")
-
-	accountPIN := string(input)
-	// Validate that the PIN is a 4-digit number
-	if !isValidPIN(accountPIN) {
-		res.FlagSet = append(res.FlagSet, flag_incorrect_pin)
-		return res, nil
-	}
-
-	res.FlagReset = append(res.FlagReset, flag_incorrect_pin)
-	store := h.userdataStore
-	err = store.WriteEntry(ctx, sessionId, utils.DATA_ACCOUNT_PIN, []byte(accountPIN))
-	if err != nil {
-		return res, err
-	}
-	return res, nil
-}
-
 func (h *Handlers) VerifyNewPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	res := resource.Result{}
 	_, ok := ctx.Value("SessionId").(string)
@@ -226,6 +221,9 @@ func (h *Handlers) VerifyNewPin(ctx context.Context, sym string, input []byte) (
 	return res, nil
 }
 
+// SaveTemporaryPin saves the valid PIN input to the DATA_TEMPORARY_VALUE
+// during the account creation process
+// and during the change PIN process
 func (h *Handlers) SaveTemporaryPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
 	var err error
@@ -234,6 +232,7 @@ func (h *Handlers) SaveTemporaryPin(ctx context.Context, sym string, input []byt
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
+
 	flag_incorrect_pin, _ := h.flagManager.GetFlag("flag_incorrect_pin")
 
 	accountPIN := string(input)
@@ -243,11 +242,15 @@ func (h *Handlers) SaveTemporaryPin(ctx context.Context, sym string, input []byt
 		res.FlagSet = append(res.FlagSet, flag_incorrect_pin)
 		return res, nil
 	}
+
+	res.FlagReset = append(res.FlagReset, flag_incorrect_pin)
+
 	store := h.userdataStore
-	err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_PIN, []byte(accountPIN))
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE, []byte(accountPIN))
 	if err != nil {
 		return res, err
 	}
+
 	return res, nil
 }
 
@@ -260,7 +263,7 @@ func (h *Handlers) ConfirmPinChange(ctx context.Context, sym string, input []byt
 	flag_pin_mismatch, _ := h.flagManager.GetFlag("flag_pin_mismatch")
 
 	store := h.userdataStore
-	temporaryPin, err := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_PIN)
+	temporaryPin, err := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE)
 	if err != nil {
 		return res, err
 	}
@@ -276,10 +279,10 @@ func (h *Handlers) ConfirmPinChange(ctx context.Context, sym string, input []byt
 	return res, nil
 }
 
-// VerifyPin checks whether the confirmation PIN is similar to the account PIN
-// If similar, it sets the USERFLAG_PIN_SET flag allowing the user
+// VerifyCreatePin checks whether the confirmation PIN is similar to the temporary PIN
+// If similar, it sets the USERFLAG_PIN_SET flag and writes the account PIN allowing the user
 // to access the main menu
-func (h *Handlers) VerifyPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+func (h *Handlers) VerifyCreatePin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
 
 	flag_valid_pin, _ := h.flagManager.GetFlag("flag_valid_pin")
@@ -291,12 +294,12 @@ func (h *Handlers) VerifyPin(ctx context.Context, sym string, input []byte) (res
 		return res, fmt.Errorf("missing session")
 	}
 	store := h.userdataStore
-	AccountPin, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACCOUNT_PIN)
+	temporaryPin, err := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE)
 	if err != nil {
 		return res, err
 	}
 
-	if bytes.Equal(input, AccountPin) {
+	if bytes.Equal(input, temporaryPin) {
 		res.FlagSet = []uint32{flag_valid_pin}
 		res.FlagReset = []uint32{flag_pin_mismatch}
 		res.FlagSet = append(res.FlagSet, flag_pin_set)
@@ -304,6 +307,11 @@ func (h *Handlers) VerifyPin(ctx context.Context, sym string, input []byte) (res
 		res.FlagSet = []uint32{flag_pin_mismatch}
 	}
 
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_ACCOUNT_PIN, []byte(temporaryPin))
+	if err != nil {
+		return res, err
+	}
+
 	return res, nil
 }
 
@@ -325,10 +333,18 @@ func (h *Handlers) SaveFirstname(ctx context.Context, sym string, input []byte)
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
-	if len(input) > 0 {
-		firstName := string(input)
-		store := h.userdataStore
-		err = store.WriteEntry(ctx, sessionId, utils.DATA_FIRST_NAME, []byte(firstName))
+	firstName := string(input)
+	store := h.userdataStore
+	flag_allow_update, _ := h.flagManager.GetFlag("flag_allow_update")
+	allowUpdate := h.st.MatchFlag(flag_allow_update, true)
+	if allowUpdate {
+		temporaryFirstName, _ := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE)
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_FIRST_NAME, []byte(temporaryFirstName))
+		if err != nil {
+			return res, err
+		}
+	} else {
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE, []byte(firstName))
 		if err != nil {
 			return res, err
 		}
@@ -345,18 +361,24 @@ func (h *Handlers) SaveFamilyname(ctx context.Context, sym string, input []byte)
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
+	store := h.userdataStore
+	familyName := string(input)
 
-	if len(input) > 0 {
-		familyName := string(input)
-		store := h.userdataStore
-		err = store.WriteEntry(ctx, sessionId, utils.DATA_FAMILY_NAME, []byte(familyName))
+	flag_allow_update, _ := h.flagManager.GetFlag("flag_allow_update")
+	allowUpdate := h.st.MatchFlag(flag_allow_update, true)
+
+	if allowUpdate {
+		temporaryFamilyName, _ := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE)
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_FAMILY_NAME, []byte(temporaryFamilyName))
 		if err != nil {
 			return res, err
 		}
 	} else {
-		return res, fmt.Errorf("a family name cannot be less than one character")
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE, []byte(familyName))
+		if err != nil {
+			return res, err
+		}
 	}
-
 	return res, nil
 }
 
@@ -368,11 +390,19 @@ func (h *Handlers) SaveYob(ctx context.Context, sym string, input []byte) (resou
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
+	yob := string(input)
+	store := h.userdataStore
+	flag_allow_update, _ := h.flagManager.GetFlag("flag_allow_update")
+	allowUpdate := h.st.MatchFlag(flag_allow_update, true)
 
-	if len(input) == 4 {
-		yob := string(input)
-		store := h.userdataStore
-		err = store.WriteEntry(ctx, sessionId, utils.DATA_YOB, []byte(yob))
+	if allowUpdate {
+		temporaryYob, _ := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE)
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_YOB, []byte(temporaryYob))
+		if err != nil {
+			return res, err
+		}
+	} else {
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE, []byte(yob))
 		if err != nil {
 			return res, err
 		}
@@ -389,11 +419,20 @@ func (h *Handlers) SaveLocation(ctx context.Context, sym string, input []byte) (
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
+	location := string(input)
+	store := h.userdataStore
 
-	if len(input) > 0 {
-		location := string(input)
-		store := h.userdataStore
-		err = store.WriteEntry(ctx, sessionId, utils.DATA_LOCATION, []byte(location))
+	flag_allow_update, _ := h.flagManager.GetFlag("flag_allow_update")
+	allowUpdate := h.st.MatchFlag(flag_allow_update, true)
+
+	if allowUpdate {
+		temporaryLocation, _ := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE)
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_LOCATION, []byte(temporaryLocation))
+		if err != nil {
+			return res, err
+		}
+	} else {
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE, []byte(location))
 		if err != nil {
 			return res, err
 		}
@@ -411,12 +450,22 @@ func (h *Handlers) SaveGender(ctx context.Context, sym string, input []byte) (re
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
-
 	gender := strings.Split(symbol, "_")[1]
 	store := h.userdataStore
-	err = store.WriteEntry(ctx, sessionId, utils.DATA_GENDER, []byte(gender))
-	if err != nil {
-		return res, nil
+	flag_allow_update, _ := h.flagManager.GetFlag("flag_allow_update")
+	allowUpdate := h.st.MatchFlag(flag_allow_update, true)
+
+	if allowUpdate {
+		temporaryGender, _ := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE)
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_GENDER, []byte(temporaryGender))
+		if err != nil {
+			return res, err
+		}
+	} else {
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE, []byte(gender))
+		if err != nil {
+			return res, err
+		}
 	}
 
 	return res, nil
@@ -430,13 +479,22 @@ func (h *Handlers) SaveOfferings(ctx context.Context, sym string, input []byte)
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
+	offerings := string(input)
+	store := h.userdataStore
 
-	if len(input) > 0 {
-		offerings := string(input)
-		store := h.userdataStore
-		err = store.WriteEntry(ctx, sessionId, utils.DATA_OFFERINGS, []byte(offerings))
+	flag_allow_update, _ := h.flagManager.GetFlag("flag_allow_update")
+	allowUpdate := h.st.MatchFlag(flag_allow_update, true)
+
+	if allowUpdate {
+		temporaryOfferings, _ := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE)
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_OFFERINGS, []byte(temporaryOfferings))
 		if err != nil {
-			return res, nil
+			return res, err
+		}
+	} else {
+		err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_VALUE, []byte(offerings))
+		if err != nil {
+			return res, err
 		}
 	}
 
@@ -456,7 +514,6 @@ func (h *Handlers) ResetAllowUpdate(ctx context.Context, sym string, input []byt
 // ResetAccountAuthorized resets the account authorization flag after a successful PIN entry.
 func (h *Handlers) ResetAccountAuthorized(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
-
 	flag_account_authorized, _ := h.flagManager.GetFlag("flag_account_authorized")
 
 	res.FlagReset = append(res.FlagReset, flag_account_authorized)
@@ -466,12 +523,10 @@ func (h *Handlers) ResetAccountAuthorized(ctx context.Context, sym string, input
 // CheckIdentifier retrieves the PublicKey from the JSON data file.
 func (h *Handlers) CheckIdentifier(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
-
 	sessionId, ok := ctx.Value("SessionId").(string)
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
-
 	store := h.userdataStore
 	publicKey, _ := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
 
@@ -485,12 +540,10 @@ func (h *Handlers) CheckIdentifier(ctx context.Context, sym string, input []byte
 func (h *Handlers) Authorize(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
 	var err error
-
 	sessionId, ok := ctx.Value("SessionId").(string)
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
-
 	flag_incorrect_pin, _ := h.flagManager.GetFlag("flag_incorrect_pin")
 	flag_account_authorized, _ := h.flagManager.GetFlag("flag_account_authorized")
 	flag_allow_update, _ := h.flagManager.GetFlag("flag_allow_update")
@@ -542,28 +595,21 @@ func (h *Handlers) CheckAccountStatus(ctx context.Context, sym string, input []b
 		return res, fmt.Errorf("missing session")
 	}
 	store := h.userdataStore
-	trackingId, err := store.ReadEntry(ctx, sessionId, utils.DATA_TRACKING_ID)
+	publicKey, err := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
 	if err != nil {
 		return res, err
 	}
-
-	accountStatus, err := h.accountService.CheckAccountStatus(string(trackingId))
+	okResponse, err = h.accountService.TrackAccountStatus(ctx, string(publicKey))
 	if err != nil {
-		fmt.Println("Error checking account status:", err)
-		return res, err
-	}
-	if !accountStatus.Ok {
 		res.FlagSet = append(res.FlagSet, flag_api_error)
 		return res, err
 	}
 	res.FlagReset = append(res.FlagReset, flag_api_error)
-	status := accountStatus.Result.Transaction.Status
-
-	err = store.WriteEntry(ctx, sessionId, utils.DATA_ACCOUNT_STATUS, []byte(status))
-	if err != nil {
-		return res, nil
+	isActive := okResponse.Result["active"].(bool)
+	if !ok {
+		return res, err
 	}
-	if accountStatus.Result.Transaction.Status == "SUCCESS" {
+	if isActive {
 		res.FlagSet = append(res.FlagSet, flag_account_success)
 		res.FlagReset = append(res.FlagReset, flag_account_pending)
 	} else {
@@ -637,14 +683,12 @@ func (h *Handlers) ResetIncorrectYob(ctx context.Context, sym string, input []by
 	return res, nil
 }
 
-// CheckBalance retrieves the balance from the API using the "PublicKey" and sets
+// CheckBalance retrieves the balance of the active voucher and sets
 // the balance as the result content
 func (h *Handlers) CheckBalance(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
 	var err error
 
-	flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
-
 	sessionId, ok := ctx.Value("SessionId").(string)
 	if !ok {
 		return res, fmt.Errorf("missing session")
@@ -655,23 +699,25 @@ func (h *Handlers) CheckBalance(ctx context.Context, sym string, input []byte) (
 	l.AddDomain("default")
 
 	store := h.userdataStore
-	publicKey, err := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
+
+	// get the active sym and active balance
+	activeSym, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
+	if err != nil {
+		if db.IsNotFound(err) {
+			balance := "0.00"
+			res.Content = l.Get("Balance: %s\n", balance)
+			return res, nil
+		}
+
+		return res, err
+	}
+
+	activeBal, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL)
 	if err != nil {
 		return res, err
 	}
 
-	balanceResponse, err := h.accountService.CheckBalance(string(publicKey))
-	if err != nil {
-		return res, nil
-	}
-	if !balanceResponse.Ok {
-		res.FlagSet = append(res.FlagSet, flag_api_error)
-		return res, nil
-	}
-	res.FlagReset = append(res.FlagReset, flag_api_error)
-	balance := balanceResponse.Result.Balance
-
-	res.Content = l.Get("Balance: %s\n", balance)
+	res.Content = l.Get("Balance: %s\n", fmt.Sprintf("%s %s", activeBal, activeSym))
 
 	return res, nil
 }
@@ -693,7 +739,7 @@ func (h *Handlers) FetchCustodialBalances(ctx context.Context, sym string, input
 		return res, err
 	}
 
-	balanceResponse, err := h.accountService.CheckBalance(string(publicKey))
+	balanceResponse, err := h.accountService.CheckBalance(ctx, string(publicKey))
 	if err != nil {
 		return res, nil
 	}
@@ -809,15 +855,13 @@ func (h *Handlers) MaxAmount(ctx context.Context, sym string, input []byte) (res
 		return res, fmt.Errorf("missing session")
 	}
 	store := h.userdataStore
-	publicKey, _ := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
 
-	balanceResp, err := h.accountService.CheckBalance(string(publicKey))
+	activeBal, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL)
 	if err != nil {
-		return res, nil
+		return res, err
 	}
-	balance := balanceResp.Result.Balance
 
-	res.Content = balance
+	res.Content = string(activeBal)
 
 	return res, nil
 }
@@ -826,54 +870,29 @@ func (h *Handlers) MaxAmount(ctx context.Context, sym string, input []byte) (res
 // it is not more than the current balance.
 func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
-	var err error
 
 	sessionId, ok := ctx.Value("SessionId").(string)
 	if !ok {
 		return res, fmt.Errorf("missing session")
 	}
-
 	flag_invalid_amount, _ := h.flagManager.GetFlag("flag_invalid_amount")
-	flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
-
 	store := h.userdataStore
-	publicKey, _ := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
 
-	amountStr := string(input)
+	var balanceValue float64
 
-	balanceRes, err := h.accountService.CheckBalance(string(publicKey))
-	balanceStr := balanceRes.Result.Balance
-
-	if !balanceRes.Ok {
-		res.FlagSet = append(res.FlagSet, flag_api_error)
-		return res, nil
-	}
+	// retrieve the active balance
+	activeBal, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL)
 	if err != nil {
 		return res, err
 	}
-	res.Content = balanceStr
-	res.FlagReset = append(res.FlagReset, flag_api_error)
-
-	// Parse the balance
-	balanceParts := strings.Split(balanceStr, " ")
-	if len(balanceParts) != 2 {
-		return res, fmt.Errorf("unexpected balance format: %s", balanceStr)
-	}
-	balanceValue, err := strconv.ParseFloat(balanceParts[0], 64)
+	balanceValue, err = strconv.ParseFloat(string(activeBal), 64)
 	if err != nil {
-		return res, fmt.Errorf("failed to parse balance: %v", err)
+		return res, err
 	}
 
-	// Extract numeric part from input
-	re := regexp.MustCompile(`^(\d+(\.\d+)?)\s*(?:CELO)?$`)
-	matches := re.FindStringSubmatch(strings.TrimSpace(amountStr))
-	if len(matches) < 2 {
-		res.FlagSet = append(res.FlagSet, flag_invalid_amount)
-		res.Content = amountStr
-		return res, nil
-	}
-
-	inputAmount, err := strconv.ParseFloat(matches[1], 64)
+	// Extract numeric part from the input amount
+	amountStr := strings.TrimSpace(string(input))
+	inputAmount, err := strconv.ParseFloat(amountStr, 64)
 	if err != nil {
 		res.FlagSet = append(res.FlagSet, flag_invalid_amount)
 		res.Content = amountStr
@@ -886,12 +905,14 @@ func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte)
 		return res, nil
 	}
 
-	res.Content = fmt.Sprintf("%.3f", inputAmount) // Format to 3 decimal places
-	err = store.WriteEntry(ctx, sessionId, utils.DATA_AMOUNT, []byte(amountStr))
+	// Format the amount with 2 decimal places before saving
+	formattedAmount := fmt.Sprintf("%.2f", inputAmount)
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_AMOUNT, []byte(formattedAmount))
 	if err != nil {
 		return res, err
 	}
 
+	res.Content = fmt.Sprintf("%s", formattedAmount)
 	return res, nil
 }
 
@@ -934,9 +955,16 @@ func (h *Handlers) GetAmount(ctx context.Context, sym string, input []byte) (res
 		return res, fmt.Errorf("missing session")
 	}
 	store := h.userdataStore
+
+	// retrieve the active symbol
+	activeSym, err := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
+	if err != nil {
+		return res, err
+	}
+
 	amount, _ := store.ReadEntry(ctx, sessionId, utils.DATA_AMOUNT)
 
-	res.Content = string(amount)
+	res.Content = fmt.Sprintf("%s %s", string(amount), string(activeSym))
 
 	return res, nil
 }
@@ -962,7 +990,9 @@ func (h *Handlers) InitiateTransaction(ctx context.Context, sym string, input []
 
 	recipient, _ := store.ReadEntry(ctx, sessionId, utils.DATA_RECIPIENT)
 
-	res.Content = l.Get("Your request has been sent. %s will receive %s from %s.", string(recipient), string(amount), string(sessionId))
+	activeSym, _ := store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
+
+	res.Content = l.Get("Your request has been sent. %s will receive %s %s from %s.", string(recipient), string(amount), string(activeSym), string(sessionId))
 
 	account_authorized_flag, err := h.flagManager.GetFlag("flag_account_authorized")
 	if err != nil {
@@ -1046,3 +1076,181 @@ func (h *Handlers) GetProfileInfo(ctx context.Context, sym string, input []byte)
 
 	return res, nil
 }
+
+// SetDefaultVoucher retrieves the current vouchers
+// and sets the first as the default voucher, if no active voucher is set
+func (h *Handlers) SetDefaultVoucher(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	var err error
+	store := h.userdataStore
+
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	flag_no_active_voucher, _ := h.flagManager.GetFlag("flag_no_active_voucher")
+
+	// check if the user has an active sym
+	_, err = store.ReadEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM)
+
+	if err != nil {
+		if db.IsNotFound(err) {
+			publicKey, err := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
+			if err != nil {
+				return res, err
+			}
+
+			// Fetch vouchers from the API using the public key
+			vouchersResp, err := h.accountService.FetchVouchers(ctx, string(publicKey))
+			if err != nil {
+				return res, err
+			}
+
+			// Return if there is no voucher
+			if len(vouchersResp.Result.Holdings) == 0 {
+				res.FlagSet = append(res.FlagSet, flag_no_active_voucher)
+				return res, nil
+			}
+
+			// Use only the first voucher
+			firstVoucher := vouchersResp.Result.Holdings[0]
+			defaultSym := firstVoucher.TokenSymbol
+			defaultBal := firstVoucher.Balance
+
+			// set the active symbol
+			err = store.WriteEntry(ctx, sessionId, utils.DATA_ACTIVE_SYM, []byte(defaultSym))
+			if err != nil {
+				return res, err
+			}
+			// set the active balance
+			err = store.WriteEntry(ctx, sessionId, utils.DATA_ACTIVE_BAL, []byte(defaultBal))
+			if err != nil {
+				return res, err
+			}
+
+			return res, nil
+		}
+
+		return res, err
+	}
+
+	res.FlagReset = append(res.FlagReset, flag_no_active_voucher)
+
+	return res, nil
+}
+
+// CheckVouchers retrieves the token holdings from the API using the "PublicKey" and stores
+// them to gdbm
+func (h *Handlers) CheckVouchers(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	store := h.userdataStore
+	publicKey, err := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
+	if err != nil {
+		return res, nil
+	}
+
+	// Fetch vouchers from the API using the public key
+	vouchersResp, err := h.accountService.FetchVouchers(ctx, string(publicKey))
+	if err != nil {
+		return res, nil
+	}
+
+	data := utils.ProcessVouchers(vouchersResp.Result.Holdings)
+
+	// Store all voucher data
+	dataMap := map[string]string{
+		"sym":  data.Symbols,
+		"bal":  data.Balances,
+		"deci": data.Decimals,
+		"addr": data.Addresses,
+	}
+
+	for key, value := range dataMap {
+		if err := h.prefixDb.Put(ctx, []byte(key), []byte(value)); err != nil {
+			return res, nil
+		}
+	}
+
+	return res, nil
+}
+
+// GetVoucherList fetches the list of vouchers and formats them
+func (h *Handlers) GetVoucherList(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+
+	// Read vouchers from the store
+	voucherData, err := h.prefixDb.Get(ctx, []byte("sym"))
+	if err != nil {
+		return res, err
+	}
+
+	res.Content = string(voucherData)
+
+	return res, nil
+}
+
+// ViewVoucher retrieves the token holding and balance from the subprefixDB
+func (h *Handlers) ViewVoucher(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	flag_incorrect_voucher, _ := h.flagManager.GetFlag("flag_incorrect_voucher")
+
+	inputStr := string(input)
+	if inputStr == "0" || inputStr == "99" {
+		res.FlagReset = append(res.FlagReset, flag_incorrect_voucher)
+		return res, nil
+	}
+
+	metadata, err := utils.GetVoucherData(ctx, h.prefixDb, inputStr)
+	if err != nil {
+		return res, fmt.Errorf("failed to retrieve voucher data: %v", err)
+	}
+
+	if metadata == nil {
+		res.FlagSet = append(res.FlagSet, flag_incorrect_voucher)
+		return res, nil
+	}
+
+	if err := utils.StoreTemporaryVoucher(ctx, h.userdataStore, sessionId, metadata); err != nil {
+		return res, err
+	}
+
+	res.FlagReset = append(res.FlagReset, flag_incorrect_voucher)
+	res.Content = fmt.Sprintf("%s\n%s", metadata.TokenSymbol, metadata.Balance)
+
+	return res, nil
+}
+
+// SetVoucher retrieves the temp voucher data and sets it as the active data
+func (h *Handlers) SetVoucher(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+
+	// Get temporary data
+	tempData, err := utils.GetTemporaryVoucherData(ctx, h.userdataStore, sessionId)
+	if err != nil {
+		return res, err
+	}
+
+	// Set as active and clear temporary data
+	if err := utils.UpdateVoucherData(ctx, h.userdataStore, sessionId, tempData); err != nil {
+		return res, err
+	}
+
+	res.Content = tempData.TokenSymbol
+	return res, nil
+}

internal/http/http_test.go

@@ -13,7 +13,7 @@ import (
 
 	"git.defalsify.org/vise.git/engine"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
-	"git.grassecon.net/urdt/ussd/internal/mocks/httpmocks"
+	"git.grassecon.net/urdt/ussd/internal/testutil/mocks/httpmocks"
 )
 
 // invalidRequestType is a custom type to test invalid request scenarios

internal/mocks/dbmock.go

@@ -1,59 +0,0 @@
-package mocks
-
-import (
-	"context"
-
-	"git.defalsify.org/vise.git/lang"
-	"github.com/stretchr/testify/mock"
-)
-
-type MockDb struct {
-	mock.Mock
-}
-
-func (m *MockDb) SetPrefix(prefix uint8) {
-	m.Called(prefix)
-}
-
-func (m *MockDb) Prefix() uint8 {
-	args := m.Called()
-	return args.Get(0).(uint8)
-}
-
-func (m *MockDb) Safe() bool {
-	args := m.Called()
-	return args.Get(0).(bool)
-}
-
-func (m *MockDb) SetLanguage(language *lang.Language) {
-	m.Called(language)
-}
-
-func (m *MockDb) SetLock(uint8, bool) error {
-	args := m.Called()
-	return args.Error(0)
-}
-
-func (m *MockDb) Connect(ctx context.Context, connectionStr string) error {
-	args := m.Called(ctx, connectionStr)
-	return args.Error(0)
-}
-
-func (m *MockDb) SetSession(sessionId string) {
-	m.Called(sessionId)
-}
-
-func (m *MockDb) Put(ctx context.Context, key, value []byte) error {
-	args := m.Called(ctx, key, value)
-	return args.Error(0)
-}
-
-func (m *MockDb) Get(ctx context.Context, key []byte) ([]byte, error) {
-	args := m.Called(ctx, key)
-	return nil, args.Error(0)
-}
-
-func (m *MockDb) Close() error {
-	args := m.Called(nil)
-	return args.Error(0)
-}

internal/mocks/servicemock.go

@@ -1,26 +0,0 @@
-package mocks
-
-import (
-	"git.grassecon.net/urdt/ussd/internal/models"
-	"github.com/stretchr/testify/mock"
-)
-
-// MockAccountService implements AccountServiceInterface for testing
-type MockAccountService struct {
-	mock.Mock
-}
-
-func (m *MockAccountService) CreateAccount() (*models.AccountResponse, error) {
-	args := m.Called()
-	return args.Get(0).(*models.AccountResponse), args.Error(1)
-}
-
-func (m *MockAccountService) CheckBalance(publicKey string) (*models.BalanceResponse, error) {
-	args := m.Called(publicKey)
-	return args.Get(0).(*models.BalanceResponse), args.Error(1)
-}
-
-func (m *MockAccountService) CheckAccountStatus(trackingId string) (*models.TrackStatusResponse, error) {
-	args := m.Called(trackingId)
-	return args.Get(0).(*models.TrackStatusResponse), args.Error(1)
-}

internal/mocks/userdbmock.go

@@ -1,24 +0,0 @@
-package mocks
-
-import (
-	"context"
-
-	"git.defalsify.org/vise.git/db"
-	"git.grassecon.net/urdt/ussd/internal/utils"
-	"github.com/stretchr/testify/mock"
-)
-
-type MockUserDataStore struct {
-	db.Db
-	mock.Mock
-}
-
-func (m *MockUserDataStore) ReadEntry(ctx context.Context, sessionId string, typ utils.DataTyp) ([]byte, error) {
-	args := m.Called(ctx, sessionId, typ)
-	return args.Get(0).([]byte), args.Error(1)
-}
-
-func (m *MockUserDataStore) WriteEntry(ctx context.Context, sessionId string, typ utils.DataTyp, value []byte) error {
-	args := m.Called(ctx, sessionId, typ, value)
-	return args.Error(0)
-}

internal/models/accountresponse.go

@@ -1,15 +1,10 @@
 package models
 
-import (
-	"encoding/json"
-
-)
-
 type AccountResponse struct {
-	Ok     bool `json:"ok"`
-	Result struct {
-		CustodialId json.Number `json:"custodialId"`
-		PublicKey   string      `json:"publicKey"`
-		TrackingId  string      `json:"trackingId"`
+	Ok          bool   `json:"ok"`
+	Description string `json:"description"` // Include the description field
+	Result      struct {
+		PublicKey  string `json:"publicKey"`
+		TrackingId string `json:"trackingId"`
 	} `json:"result"`
-}
+}

internal/models/tokenresponse.go

@@ -0,0 +1,18 @@
+package models
+
+type ApiResponse struct {
+	OK          bool   `json:"ok"`
+	Description string `json:"description"`
+	Result      Result `json:"result"`
+}
+
+type Result struct {
+	Holdings []Holding `json:"holdings"`
+}
+
+type Holding struct {
+	ContractAddress string `json:"contractAddress"`
+	TokenSymbol     string `json:"tokenSymbol"`
+	TokenDecimals   string `json:"tokenDecimals"`
+	Balance         string `json:"balance"`
+}

internal/models/trackstatusresponse.go

@@ -4,7 +4,6 @@ import (
 	"encoding/json"
 	"time"
 )
-
 type Transaction struct {
 	CreatedAt     time.Time   `json:"createdAt"`
 	Status        string      `json:"status"`

internal/models/vouchersresponse.go

@@ -0,0 +1,14 @@
+package models
+
+import dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
+
+type VoucherHoldingResponse struct {
+	Ok          bool          `json:"ok"`
+	Description string        `json:"description"`
+	Result      VoucherResult `json:"result"`
+}
+
+// VoucherResult holds the list of token holdings
+type VoucherResult struct {
+	Holdings []dataserviceapi.TokenHoldings `json:"holdings"`
+}

internal/storage/db.go

@@ -10,34 +10,38 @@ const (
 	DATATYPE_USERSUB = 64
 )
 
+// PrefixDb interface abstracts the database operations.
+type PrefixDb interface {
+	Get(ctx context.Context, key []byte) ([]byte, error)
+	Put(ctx context.Context, key []byte, val []byte) error
+}
+
+var _ PrefixDb = (*SubPrefixDb)(nil)
+
 type SubPrefixDb struct {
 	store db.Db
-	pfx []byte
+	pfx   []byte
 }
 
 func NewSubPrefixDb(store db.Db, pfx []byte) *SubPrefixDb {
 	return &SubPrefixDb{
 		store: store,
-		pfx: pfx,
+		pfx:   pfx,
 	}
 }
 
-func(s *SubPrefixDb) toKey(k []byte) []byte {
-        return append(s.pfx, k...)
+func (s *SubPrefixDb) toKey(k []byte) []byte {
+	return append(s.pfx, k...)
 }
 
-func(s *SubPrefixDb) Get(ctx context.Context, key []byte) ([]byte, error) {
-        s.store.SetPrefix(DATATYPE_USERSUB)
+func (s *SubPrefixDb) Get(ctx context.Context, key []byte) ([]byte, error) {
+	s.store.SetPrefix(DATATYPE_USERSUB)
 	key = s.toKey(key)
-        v, err := s.store.Get(ctx, key)
-        if err != nil {
-                return nil, err
-        }
-        return v, nil
+	return s.store.Get(ctx, key)
 }
 
-func(s *SubPrefixDb) Put(ctx context.Context, key []byte, val []byte) error {
-        s.store.SetPrefix(DATATYPE_USERSUB)
+func (s *SubPrefixDb) Put(ctx context.Context, key []byte, val []byte) error {
+	s.store.SetPrefix(DATATYPE_USERSUB)
 	key = s.toKey(key)
-        return s.store.Put(ctx, key, val)
+	return s.store.Put(ctx, key, val)
 }

internal/testutil/TestEngine.go

@@ -13,6 +13,8 @@ import (
 	"git.grassecon.net/urdt/ussd/internal/handlers"
 	"git.grassecon.net/urdt/ussd/internal/handlers/server"
 	"git.grassecon.net/urdt/ussd/internal/storage"
+	"git.grassecon.net/urdt/ussd/internal/testutil/testservice"
+	"git.grassecon.net/urdt/ussd/internal/testutil/testtag"
 	testdataloader "github.com/peteole/testdata-loader"
 )
 
@@ -80,12 +82,12 @@ func TestEngine(sessionId string) (engine.Engine, func(), chan bool) {
 		os.Exit(1)
 	}
 
-	if AccountService == nil {
-		AccountService = &server.AccountService{}
+	if testtag.AccountService == nil {
+		testtag.AccountService = &server.AccountService{}
 	}
 
-	switch AccountService.(type) {
-	case *server.TestAccountService:
+	switch testtag.AccountService.(type) {
+	case *testservice.TestAccountService:
 		go func() {
 			eventChannel <- false
 		}()
@@ -98,7 +100,7 @@ func TestEngine(sessionId string) (engine.Engine, func(), chan bool) {
 		panic("Unknown account service type")
 	}
 
-	hl, err := lhs.GetHandler(AccountService)
+	hl, err := lhs.GetHandler(testtag.AccountService)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)

internal/testutil/mocks/servicemock.go

@@ -0,0 +1,40 @@
+package mocks
+
+import (
+	"context"
+
+	"git.grassecon.net/urdt/ussd/internal/models"
+	"github.com/grassrootseconomics/eth-custodial/pkg/api"
+	"github.com/stretchr/testify/mock"
+)
+
+// MockAccountService implements AccountServiceInterface for testing
+type MockAccountService struct {
+	mock.Mock
+}
+
+func (m *MockAccountService) CreateAccount(ctx context.Context) (*api.OKResponse, error) {
+	args := m.Called()
+	return args.Get(0).(*api.OKResponse), args.Error(1)
+}
+
+func (m *MockAccountService) CheckBalance(ctx context.Context, publicKey string) (*models.BalanceResponse, error) {
+	args := m.Called(publicKey)
+	return args.Get(0).(*models.BalanceResponse), args.Error(1)
+}
+
+func (m *MockAccountService) CheckAccountStatus(ctx context.Context, trackingId string) (*models.TrackStatusResponse, error) {
+	args := m.Called(trackingId)
+	return args.Get(0).(*models.TrackStatusResponse), args.Error(1)
+}
+
+func (m *MockAccountService) TrackAccountStatus(ctx context.Context,publicKey string) (*api.OKResponse, error) {
+	args := m.Called(publicKey)
+	return args.Get(0).(*api.OKResponse), args.Error(1)
+}
+
+
+func (m *MockAccountService) FetchVouchers(ctx context.Context, publicKey string) (*models.VoucherHoldingResponse, error) {
+	args := m.Called(publicKey)
+	return args.Get(0).(*models.VoucherHoldingResponse), args.Error(1)
+}

internal/testutil/offlinetest.go

@@ -1,11 +0,0 @@
-// +build !online
-
-package testutil
-
-import (
-	"git.grassecon.net/urdt/ussd/internal/handlers/server"
-)
-
-var (
-	AccountService server.AccountServiceInterface = &server.TestAccountService{}
-)

internal/testutil/testservice/TestAccountService.go

@@ -0,0 +1,90 @@
+package testservice
+
+import (
+	"context"
+	"encoding/json"
+	"time"
+
+	"git.grassecon.net/urdt/ussd/internal/models"
+	"github.com/grassrootseconomics/eth-custodial/pkg/api"
+	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
+)
+
+type TestAccountService struct {
+}
+
+func (tas *TestAccountService) CreateAccount(ctx context.Context) (*api.OKResponse, error) {
+	return &api.OKResponse{
+		Ok:          true,
+		Description: "Account creation succeeded",
+		Result: map[string]any{
+			"trackingId": "075ccc86-f6ef-4d33-97d5-e91cfb37aa0d",
+			"publicKey":  "0x623EFAFa8868df4B934dd12a8B26CB3Dd75A7AdD",
+		},
+	}, nil
+}
+
+func (tas *TestAccountService) CheckBalance(ctx context.Context, publicKey string) (*models.BalanceResponse, error) {
+	balanceResponse := &models.BalanceResponse{
+		Ok: true,
+		Result: struct {
+			Balance string      `json:"balance"`
+			Nonce   json.Number `json:"nonce"`
+		}{
+			Balance: "0.003 CELO",
+			Nonce:   json.Number("0"),
+		},
+	}
+
+	return balanceResponse, nil
+}
+
+func (tas *TestAccountService) CheckAccountStatus(ctx context.Context, trackingId string) (*models.TrackStatusResponse, error) {
+	trackResponse := &models.TrackStatusResponse{
+		Ok: true,
+		Result: struct {
+			Transaction struct {
+				CreatedAt     time.Time   "json:\"createdAt\""
+				Status        string      "json:\"status\""
+				TransferValue json.Number "json:\"transferValue\""
+				TxHash        string      "json:\"txHash\""
+				TxType        string      "json:\"txType\""
+			}
+		}{
+			Transaction: models.Transaction{
+				CreatedAt:     time.Now(),
+				Status:        "SUCCESS",
+				TransferValue: json.Number("0.5"),
+				TxHash:        "0x123abc456def",
+				TxType:        "transfer",
+			},
+		},
+	}
+	return trackResponse, nil
+}
+
+func (tas *TestAccountService) TrackAccountStatus(ctx context.Context, publicKey string) (*api.OKResponse, error) {
+	return &api.OKResponse{
+		Ok:          true,
+		Description: "Account creation succeeded",
+		Result: map[string]any{
+			"active": true,
+		},
+	}, nil
+}
+
+func (tas *TestAccountService) FetchVouchers(ctx context.Context, publicKey string) (*models.VoucherHoldingResponse, error) {
+	return &models.VoucherHoldingResponse{
+		Ok: true,
+		Result: models.VoucherResult{
+			Holdings: []dataserviceapi.TokenHoldings{
+				{
+					ContractAddress: "0x6CC75A06ac72eB4Db2eE22F781F5D100d8ec03ee",
+					TokenSymbol:     "SRF",
+					TokenDecimals:   "6",
+					Balance:         "2745987",
+				},
+			},
+		},
+	}, nil
+}

internal/testutil/testtag/offlinetest.go

@@ -0,0 +1,12 @@
+// +build !online
+
+package testtag
+
+import (
+	"git.grassecon.net/urdt/ussd/internal/handlers/server"
+	accountservice "git.grassecon.net/urdt/ussd/internal/testutil/testservice"
+)
+
+var (
+	AccountService server.AccountServiceInterface = &accountservice.TestAccountService{}
+)

internal/testutil/testtag/onlinetest.go

@@ -1,6 +1,6 @@
 // +build online
 
-package testutil
+package testtag
 
 import "git.grassecon.net/urdt/ussd/internal/handlers/server"
 

internal/utils/db.go

@@ -22,7 +22,14 @@ const (
 	DATA_OFFERINGS
 	DATA_RECIPIENT
 	DATA_AMOUNT
-	DATA_TEMPORARY_PIN
+	DATA_TEMPORARY_VALUE
+	DATA_VOUCHER_LIST
+	DATA_ACTIVE_SYM
+	DATA_ACTIVE_BAL
+	DATA_PUBLIC_KEY_REVERSE
+	DATA_ACTIVE_DECIMAL
+	DATA_ACTIVE_ADDRESS
+
 )
 
 func typToBytes(typ DataTyp) []byte {

internal/utils/vouchers.go

@@ -0,0 +1,146 @@
+package utils
+
+import (
+	"context"
+	"fmt"
+	"strings"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
+	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
+)
+
+// VoucherMetadata helps organize data fields
+type VoucherMetadata struct {
+	Symbols   string
+	Balances  string
+	Decimals  string
+	Addresses string
+}
+
+// ProcessVouchers converts holdings into formatted strings
+func ProcessVouchers(holdings []dataserviceapi.TokenHoldings) VoucherMetadata {
+	var data VoucherMetadata
+	var symbols, balances, decimals, addresses []string
+
+	for i, h := range holdings {
+		symbols = append(symbols, fmt.Sprintf("%d:%s", i+1, h.TokenSymbol))
+		balances = append(balances, fmt.Sprintf("%d:%s", i+1, h.Balance))
+		decimals = append(decimals, fmt.Sprintf("%d:%s", i+1, h.TokenDecimals))
+		addresses = append(addresses, fmt.Sprintf("%d:%s", i+1, h.ContractAddress))
+	}
+
+	data.Symbols = strings.Join(symbols, "\n")
+	data.Balances = strings.Join(balances, "\n")
+	data.Decimals = strings.Join(decimals, "\n")
+	data.Addresses = strings.Join(addresses, "\n")
+
+	return data
+}
+
+// GetVoucherData retrieves and matches voucher data
+func GetVoucherData(ctx context.Context, db storage.PrefixDb, input string) (*dataserviceapi.TokenHoldings, error) {
+	keys := []string{"sym", "bal", "deci", "addr"}
+	data := make(map[string]string)
+
+	for _, key := range keys {
+		value, err := db.Get(ctx, []byte(key))
+		if err != nil {
+			return nil, fmt.Errorf("failed to get %s: %v", key, err)
+		}
+		data[key] = string(value)
+	}
+
+	symbol, balance, decimal, address := MatchVoucher(input,
+		data["sym"],
+		data["bal"],
+		data["deci"],
+		data["addr"])
+
+	if symbol == "" {
+		return nil, nil
+	}
+
+	return &dataserviceapi.TokenHoldings{
+		TokenSymbol:     string(symbol),
+		Balance:         string(balance),
+		TokenDecimals:   string(decimal),
+		ContractAddress: string(address),
+	}, nil
+}
+
+// MatchVoucher finds the matching voucher symbol, balance, decimals and contract address based on the input.
+func MatchVoucher(input, symbols, balances, decimals, addresses string) (symbol, balance, decimal, address string) {
+	symList := strings.Split(symbols, "\n")
+	balList := strings.Split(balances, "\n")
+	decList := strings.Split(decimals, "\n")
+	addrList := strings.Split(addresses, "\n")
+
+	for i, sym := range symList {
+		parts := strings.SplitN(sym, ":", 2)
+
+		if input == parts[0] || strings.EqualFold(input, parts[1]) {
+			symbol = parts[1]
+			if i < len(balList) {
+				balance = strings.SplitN(balList[i], ":", 2)[1]
+			}
+			if i < len(decList) {
+				decimal = strings.SplitN(decList[i], ":", 2)[1]
+			}
+			if i < len(addrList) {
+				address = strings.SplitN(addrList[i], ":", 2)[1]
+			}
+			break
+		}
+	}
+	return
+}
+
+// StoreTemporaryVoucher saves voucher metadata as temporary entries in the DataStore.
+func StoreTemporaryVoucher(ctx context.Context, store DataStore, sessionId string, data *dataserviceapi.TokenHoldings) error {
+	tempData := fmt.Sprintf("%s,%s,%s,%s", data.TokenSymbol, data.Balance, data.TokenDecimals, data.ContractAddress)
+
+	if err := store.WriteEntry(ctx, sessionId, DATA_TEMPORARY_VALUE, []byte(tempData)); err != nil {
+		return err
+	}
+
+	return nil
+}
+
+// GetTemporaryVoucherData retrieves temporary voucher metadata from the DataStore.
+func GetTemporaryVoucherData(ctx context.Context, store DataStore, sessionId string) (*dataserviceapi.TokenHoldings, error) {
+	temp_data, err := store.ReadEntry(ctx, sessionId, DATA_TEMPORARY_VALUE)
+	if err != nil {
+		return nil, err
+	}
+
+	values := strings.SplitN(string(temp_data), ",", 4)
+
+	data := &dataserviceapi.TokenHoldings{}
+
+	data.TokenSymbol = values[0]
+	data.Balance = values[1]
+	data.TokenDecimals = values[2]
+	data.ContractAddress = values[3]
+
+	return data, nil
+}
+
+// UpdateVoucherData sets the active voucher data in the DataStore.
+func UpdateVoucherData(ctx context.Context, store DataStore, sessionId string, data *dataserviceapi.TokenHoldings) error {
+	// Active voucher data entries
+	activeEntries := map[DataTyp][]byte{
+		DATA_ACTIVE_SYM:     []byte(data.TokenSymbol),
+		DATA_ACTIVE_BAL:     []byte(data.Balance),
+		DATA_ACTIVE_DECIMAL: []byte(data.TokenDecimals),
+		DATA_ACTIVE_ADDRESS: []byte(data.ContractAddress),
+	}
+
+	// Write active data
+	for key, value := range activeEntries {
+		if err := store.WriteEntry(ctx, sessionId, key, value); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}

internal/utils/vouchers_test.go

@@ -0,0 +1,198 @@
+package utils
+
+import (
+	"context"
+	"fmt"
+	"testing"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
+	"github.com/alecthomas/assert/v2"
+	"github.com/stretchr/testify/require"
+
+	memdb "git.defalsify.org/vise.git/db/mem"
+	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
+)
+
+// InitializeTestDb sets up and returns an in-memory database and store.
+func InitializeTestDb(t *testing.T) (context.Context, *UserDataStore) {
+	ctx := context.Background()
+
+	// Initialize memDb
+	db := memdb.NewMemDb()
+	err := db.Connect(ctx, "")
+	require.NoError(t, err, "Failed to connect to memDb")
+
+	// Create UserDataStore with memDb
+	store := &UserDataStore{Db: db}
+
+	t.Cleanup(func() {
+		db.Close() // Ensure the DB is closed after each test
+	})
+
+	return ctx, store
+}
+
+func TestMatchVoucher(t *testing.T) {
+	symbols := "1:SRF\n2:MILO"
+	balances := "1:100\n2:200"
+	decimals := "1:6\n2:4"
+	addresses := "1:0xd4c288865Ce\n2:0x41c188d63Qa"
+
+	// Test for valid voucher
+	symbol, balance, decimal, address := MatchVoucher("2", symbols, balances, decimals, addresses)
+
+	// Assertions for valid voucher
+	assert.Equal(t, "MILO", symbol)
+	assert.Equal(t, "200", balance)
+	assert.Equal(t, "4", decimal)
+	assert.Equal(t, "0x41c188d63Qa", address)
+
+	// Test for non-existent voucher
+	symbol, balance, decimal, address = MatchVoucher("3", symbols, balances, decimals, addresses)
+
+	// Assertions for non-match
+	assert.Equal(t, "", symbol)
+	assert.Equal(t, "", balance)
+	assert.Equal(t, "", decimal)
+	assert.Equal(t, "", address)
+}
+
+func TestProcessVouchers(t *testing.T) {
+	holdings := []dataserviceapi.TokenHoldings{
+		{ContractAddress: "0xd4c288865Ce", TokenSymbol: "SRF", TokenDecimals: "6", Balance: "100"},
+		{ContractAddress: "0x41c188d63Qa", TokenSymbol: "MILO", TokenDecimals: "4", Balance: "200"},
+	}
+
+	expectedResult := VoucherMetadata{
+		Symbols:   "1:SRF\n2:MILO",
+		Balances:  "1:100\n2:200",
+		Decimals:  "1:6\n2:4",
+		Addresses: "1:0xd4c288865Ce\n2:0x41c188d63Qa",
+	}
+
+	result := ProcessVouchers(holdings)
+
+	assert.Equal(t, expectedResult, result)
+}
+
+func TestGetVoucherData(t *testing.T) {
+	ctx := context.Background()
+
+	db := memdb.NewMemDb()
+	err := db.Connect(ctx, "")
+	if err != nil {
+		t.Fatal(err)
+	}
+	spdb := storage.NewSubPrefixDb(db, []byte("vouchers"))
+
+	// Test voucher data
+	mockData := map[string][]byte{
+		"sym":  []byte("1:SRF\n2:MILO"),
+		"bal":  []byte("1:100\n2:200"),
+		"deci": []byte("1:6\n2:4"),
+		"addr": []byte("1:0xd4c288865Ce\n2:0x41c188d63Qa"),
+	}
+
+	// Put the data
+	for key, value := range mockData {
+		err = spdb.Put(ctx, []byte(key), []byte(value))
+		if err != nil {
+			t.Fatal(err)
+		}
+	}
+
+	result, err := GetVoucherData(ctx, spdb, "1")
+
+	assert.NoError(t, err)
+	assert.Equal(t, "SRF", result.TokenSymbol)
+	assert.Equal(t, "100", result.Balance)
+	assert.Equal(t, "6", result.TokenDecimals)
+	assert.Equal(t, "0xd4c288865Ce", result.ContractAddress)
+}
+
+func TestStoreTemporaryVoucher(t *testing.T) {
+	ctx, store := InitializeTestDb(t)
+	sessionId := "session123"
+
+	// Test data
+	voucherData := &dataserviceapi.TokenHoldings{
+		TokenSymbol:     "SRF",
+		Balance:         "200",
+		TokenDecimals:   "6",
+		ContractAddress: "0xd4c288865Ce0985a481Eef3be02443dF5E2e4Ea9",
+	}
+
+	// Execute the function being tested
+	err := StoreTemporaryVoucher(ctx, store, sessionId, voucherData)
+	require.NoError(t, err)
+
+	// Verify stored data
+	expectedData := fmt.Sprintf("%s,%s,%s,%s", "SRF", "200", "6", "0xd4c288865Ce0985a481Eef3be02443dF5E2e4Ea9")
+
+	storedValue, err := store.ReadEntry(ctx, sessionId, DATA_TEMPORARY_VALUE)
+	require.NoError(t, err)
+	require.Equal(t, expectedData, string(storedValue), "Mismatch for key %v", DATA_TEMPORARY_VALUE)
+
+}
+
+func TestGetTemporaryVoucherData(t *testing.T) {
+	ctx, store := InitializeTestDb(t)
+	sessionId := "session123"
+
+	// Test voucher data
+	tempData := &dataserviceapi.TokenHoldings{
+		TokenSymbol:     "SRF",
+		Balance:         "200",
+		TokenDecimals:   "6",
+		ContractAddress: "0xd4c288865Ce0985a481Eef3be02443dF5E2e4Ea9",
+	}
+
+	// Store the data
+	err := StoreTemporaryVoucher(ctx, store, sessionId, tempData)
+	require.NoError(t, err)
+
+	// Execute the function being tested
+	data, err := GetTemporaryVoucherData(ctx, store, sessionId)
+	require.NoError(t, err)
+	require.Equal(t, tempData, data)
+}
+
+func TestUpdateVoucherData(t *testing.T) {
+	ctx, store := InitializeTestDb(t)
+	sessionId := "session123"
+
+	// New voucher data
+	newData := &dataserviceapi.TokenHoldings{
+		TokenSymbol:     "SRF",
+		Balance:         "200",
+		TokenDecimals:   "6",
+		ContractAddress: "0xd4c288865Ce0985a481Eef3be02443dF5E2e4Ea9",
+	}
+
+	// Old temporary data
+	tempData := &dataserviceapi.TokenHoldings{
+		TokenSymbol:     "OLD",
+		Balance:         "100",
+		TokenDecimals:   "8",
+		ContractAddress: "0xold",
+	}
+	require.NoError(t, StoreTemporaryVoucher(ctx, store, sessionId, tempData))
+
+	// Execute update
+	err := UpdateVoucherData(ctx, store, sessionId, newData)
+	require.NoError(t, err)
+
+	// Verify active data was stored correctly
+	activeEntries := map[DataTyp][]byte{
+		DATA_ACTIVE_SYM:     []byte(newData.TokenSymbol),
+		DATA_ACTIVE_BAL:     []byte(newData.Balance),
+		DATA_ACTIVE_DECIMAL: []byte(newData.TokenDecimals),
+		DATA_ACTIVE_ADDRESS: []byte(newData.ContractAddress),
+	}
+
+	for key, expectedValue := range activeEntries {
+		storedValue, err := store.ReadEntry(ctx, sessionId, key)
+		require.NoError(t, err)
+		require.Equal(t, expectedValue, storedValue, "Active data mismatch for key %v", key)
+	}
+}

menutraversal_test/group_test.json

@@ -5,7 +5,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -33,7 +33,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -42,7 +42,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -70,7 +70,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -79,7 +79,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -116,7 +116,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -125,7 +125,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -162,7 +162,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -171,7 +171,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -203,7 +203,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -212,7 +212,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -244,7 +244,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
                
             ]
@@ -254,7 +254,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -286,7 +286,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -295,7 +295,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -327,7 +327,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -336,7 +336,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -368,7 +368,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -377,7 +377,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -409,7 +409,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         },
@@ -418,7 +418,7 @@
             "steps": [
                 {
                     "input": "",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 },
                 {
                     "input": "3",
@@ -446,7 +446,7 @@
                 },
                 {
                     "input": "0",
-                    "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                    "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                 }
             ]
         }

menutraversal_test/menu_traversal_test.go

@@ -9,8 +9,8 @@ import (
 	"regexp"
 	"testing"
 
-	"git.grassecon.net/urdt/ussd/driver"
 	"git.grassecon.net/urdt/ussd/internal/testutil"
+	"git.grassecon.net/urdt/ussd/internal/testutil/driver"
 	"github.com/gofrs/uuid"
 )
 
@@ -43,6 +43,39 @@ func extractPublicKey(response []byte) string {
 	return ""
 }
 
+// Extracts the balance value from the engine response.
+func extractBalance(response []byte) string {
+	// Regex to match "Balance: <amount> <symbol>" followed by a newline
+	re := regexp.MustCompile(`(?m)^Balance:\s+(\d+(\.\d+)?)\s+([A-Z]+)`)
+	match := re.FindSubmatch(response)
+	if match != nil {
+		return string(match[1]) + " " + string(match[3]) // "<amount> <symbol>"
+	}
+	return ""
+}
+
+// Extracts the Maximum amount value from the engine response.
+func extractMaxAmount(response []byte) string {
+	// Regex to match "Maximum amount: <amount>" followed by a newline
+	re := regexp.MustCompile(`(?m)^Maximum amount:\s+(\d+(\.\d+)?)`)
+	match := re.FindSubmatch(response)
+	if match != nil {
+		return string(match[1]) // "<amount>"
+	}
+	return ""
+}
+
+// Extracts the send amount value from the engine response.
+func extractSendAmount(response []byte) string {
+	// Regex to match the pattern "will receive X.XX SYM from"
+	re := regexp.MustCompile(`will receive (\d+\.\d{2}\s+[A-Z]+) from`)
+	match := re.FindSubmatch(response)
+	if match != nil {
+		return string(match[1]) // Returns "X.XX SYM"
+	}
+	return ""
+}
+
 func TestMain(m *testing.M) {
 	sessionID = GenerateSessionId()
 	defer func() {
@@ -154,6 +187,12 @@ func TestMainMenuHelp(t *testing.T) {
 				}
 
 				b := w.Bytes()
+				balance := extractBalance(b)
+
+				expectedContent := []byte(step.ExpectedContent)
+				expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+
+				step.ExpectedContent = string(expectedContent)
 				match, err := step.MatchesExpectedContent(b)
 				if err != nil {
 					t.Fatalf("Error compiling regex for step '%s': %v", step.Input, err)
@@ -189,6 +228,12 @@ func TestMainMenuQuit(t *testing.T) {
 				}
 
 				b := w.Bytes()
+				balance := extractBalance(b)
+
+				expectedContent := []byte(step.ExpectedContent)
+				expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+
+				step.ExpectedContent = string(expectedContent)
 				match, err := step.MatchesExpectedContent(b)
 				if err != nil {
 					t.Fatalf("Error compiling regex for step '%s': %v", step.Input, err)
@@ -225,8 +270,13 @@ func TestMyAccount_MyAddress(t *testing.T) {
 				}
 				b := w.Bytes()
 
+				balance := extractBalance(b)
 				publicKey := extractPublicKey(b)
-				expectedContent := bytes.Replace([]byte(step.ExpectedContent), []byte("{public_key}"), []byte(publicKey), -1)
+
+				expectedContent := []byte(step.ExpectedContent)
+				expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+				expectedContent = bytes.Replace(expectedContent, []byte("{public_key}"), []byte(publicKey), -1)
+
 				step.ExpectedContent = string(expectedContent)
 				match, err := step.MatchesExpectedContent(b)
 				if err != nil {
@@ -240,6 +290,52 @@ func TestMyAccount_MyAddress(t *testing.T) {
 	}
 }
 
+func TestMainMenuSend(t *testing.T) {
+	en, fn, _ := testutil.TestEngine(sessionID)
+	defer fn()
+	ctx := context.Background()
+	sessions := testData
+	for _, session := range sessions {
+		groups := driver.FilterGroupsByName(session.Groups, "send_with_invalid_inputs")
+		for _, group := range groups {
+			for _, step := range group.Steps {
+				cont, err := en.Exec(ctx, []byte(step.Input))
+				if err != nil {
+					t.Fatalf("Test case '%s' failed at input '%s': %v", group.Name, step.Input, err)
+					return
+				}
+				if !cont {
+					break
+				}
+				w := bytes.NewBuffer(nil)
+				if _, err := en.Flush(ctx, w); err != nil {
+					t.Fatalf("Test case '%s' failed during Flush: %v", group.Name, err)
+				}
+
+				b := w.Bytes()
+				balance := extractBalance(b)
+				max_amount := extractMaxAmount(b)
+				send_amount := extractSendAmount(b)
+
+				expectedContent := []byte(step.ExpectedContent)
+				expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+				expectedContent = bytes.Replace(expectedContent, []byte("{max_amount}"), []byte(max_amount), -1)
+				expectedContent = bytes.Replace(expectedContent, []byte("{send_amount}"), []byte(send_amount), -1)
+				expectedContent = bytes.Replace(expectedContent, []byte("{session_id}"), []byte(sessionID), -1)
+
+				step.ExpectedContent = string(expectedContent)
+				match, err := step.MatchesExpectedContent(b)
+				if err != nil {
+					t.Fatalf("Error compiling regex for step '%s': %v", step.Input, err)
+				}
+				if !match {
+					t.Fatalf("expected:\n\t%s\ngot:\n\t%s\n", step.ExpectedContent, b)
+				}
+			}
+		}
+	}
+}
+
 func TestGroups(t *testing.T) {
 	groups, err := driver.LoadTestGroups(groupTestFile)
 	if err != nil {
@@ -265,6 +361,13 @@ func TestGroups(t *testing.T) {
 				t.Errorf("Test case '%s' failed during Flush: %v", tt.Name, err)
 			}
 			b := w.Bytes()
+			balance := extractBalance(b)
+
+			expectedContent := []byte(tt.ExpectedContent)
+			expectedContent = bytes.Replace(expectedContent, []byte("{balance}"), []byte(balance), -1)
+
+			tt.ExpectedContent = string(expectedContent)
+
 			match, err := tt.MatchesExpectedContent(b)
 			if err != nil {
 				t.Fatalf("Error compiling regex for step '%s': %v", tt.Input, err)
@@ -272,7 +375,6 @@ func TestGroups(t *testing.T) {
 			if !match {
 				t.Fatalf("expected:\n\t%s\ngot:\n\t%s\n", tt.ExpectedContent, b)
 			}
-
 		})
 	}
 }

menutraversal_test/test_setup.json

@@ -57,7 +57,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                     },
                     {
                         "input": "1",
@@ -73,19 +73,19 @@
                     },
                     {
                         "input": "065656",
-                        "expectedContent": "Maximum amount: 0.003 CELO\nEnter amount:\n0:Back"
+                        "expectedContent": "{max_amount}\nEnter amount:\n0:Back"
                     },
                     {
-                        "input": "0.1",
-                        "expectedContent": "Amount 0.1 is invalid, please try again:\n1:retry\n9:Quit"
+                        "input": "10000000",
+                        "expectedContent": "Amount 10000000 is invalid, please try again:\n1:retry\n9:Quit"
                     },
                     {
                         "input": "1",
-                        "expectedContent": "Maximum amount: 0.003 CELO\nEnter amount:\n0:Back"
+                        "expectedContent": "{max_amount}\nEnter amount:\n0:Back"
                     },
                     {
-                        "input": "0.001",
-                        "expectedContent": "065656 will receive 0.001 from {public_key}\nPlease enter your PIN to confirm:\n0:Back\n9:Quit"
+                        "input": "1.00",
+                        "expectedContent": "065656 will receive {send_amount} from {session_id}\nPlease enter your PIN to confirm:\n0:Back\n9:Quit"
                     },
                     {
                         "input": "1222",
@@ -93,11 +93,11 @@
                     },
                     {
                         "input": "1",
-                        "expectedContent": "065656 will receive 0.001 from {public_key}\nPlease enter your PIN to confirm:\n0:Back\n9:Quit"
+                        "expectedContent": "065656 will receive {send_amount} from {session_id}\nPlease enter your PIN to confirm:\n0:Back\n9:Quit"
                     },
                     {
                         "input": "1234",
-                        "expectedContent": "Your request has been sent. 065656 will receive 0.001 from {public_key}."
+                        "expectedContent": "Your request has been sent. 065656 will receive {send_amount} from {session_id}."
                     }
                 ]
             },
@@ -106,7 +106,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                     },
                     {
                         "input": "4",
@@ -119,7 +119,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                     },
                     {
                         "input": "9",
@@ -132,7 +132,7 @@
                 "steps": [
                     {
                         "input": "",
-                        "expectedContent": "Balance: 0.003 CELO\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
+                        "expectedContent": "{balance}\n\n1:Send\n2:My Vouchers\n3:My Account\n4:Help\n9:Quit"
                     },
                     {
                         "input": "3",

sample_tokens.json

@@ -0,0 +1,44 @@
+{
+    "ok": true,
+    "description": "Token holdings with current balances",
+    "result": {
+      "holdings": [
+        {
+          "contractAddress": "0x6CC75A06ac72eB4Db2eE22F781F5D100d8ec03ee",
+          "tokenSymbol": "FSPTST",
+          "tokenDecimals": "6",
+          "balance": "8869964242"
+        },
+        {
+          "contractAddress": "0x724F2910D790B54A39a7638282a45B1D83564fFA",
+          "tokenSymbol": "GEO",
+          "tokenDecimals": "6",
+          "balance": "9884"
+        },
+        {
+          "contractAddress": "0x2105a206B7bec31E2F90acF7385cc8F7F5f9D273",
+          "tokenSymbol": "MFNK",
+          "tokenDecimals": "6",
+          "balance": "19788697"
+        },
+        {
+          "contractAddress": "0x63DE2Ac8D1008351Cc69Fb8aCb94Ba47728a7E83",
+          "tokenSymbol": "MILO",
+          "tokenDecimals": "6",
+          "balance": "75"
+        },
+        {
+          "contractAddress": "0xd4c288865Ce0985a481Eef3be02443dF5E2e4Ea9",
+          "tokenSymbol": "SOHAIL",
+          "tokenDecimals": "6",
+          "balance": "27874115"
+        },
+        {
+          "contractAddress": "0x45d747172e77d55575c197CbA9451bC2CD8F4958",
+          "tokenSymbol": "SRF",
+          "tokenDecimals": "6",
+          "balance": "2745987"
+        }
+      ]
+    }
+  }

services/registration/account_creation.vis

@@ -1,4 +1,4 @@
-RELOAD verify_pin
+RELOAD verify_create_pin
 CATCH create_pin_mismatch flag_pin_mismatch 1
 LOAD quit 0
 HALT

services/registration/amount.vis

@@ -1,5 +1,6 @@
 LOAD reset_transaction_amount 0
 LOAD max_amount 10
+RELOAD max_amount
 MAP max_amount
 MOUT back 0
 HALT
@@ -10,5 +11,5 @@ CATCH invalid_amount flag_invalid_amount 1
 INCMP _ 0
 LOAD get_recipient 12
 LOAD get_sender 64
-LOAD get_amount 12
+LOAD get_amount 32
 INCMP transaction_pin *

services/registration/confirm_create_pin.vis

@@ -1,4 +1,4 @@
-LOAD save_pin 0
+LOAD save_temporary_pin 6
 HALT
-LOAD verify_pin 8
+LOAD verify_create_pin 8
 INCMP account_creation *

services/registration/create_pin.vis

@@ -2,8 +2,8 @@ LOAD create_account 0
 CATCH account_creation_failed flag_account_creation_failed 1
 MOUT exit 0
 HALT
-LOAD save_pin 0
-RELOAD save_pin
+LOAD save_temporary_pin 6
+RELOAD save_temporary_pin
 CATCH . flag_incorrect_pin 1
 INCMP quit 0
 INCMP confirm_create_pin *

services/registration/enter_familyname.vis

@@ -1,9 +1,8 @@
 CATCH incorrect_pin flag_incorrect_pin 1
-CATCH profile_update_success flag_allow_update 1
-LOAD save_familyname 0
-RELOAD save_familyname
+CATCH update_familyname flag_allow_update 1
 MOUT back 0
 HALT
+LOAD save_familyname 0
 RELOAD save_familyname
 INCMP _ 0
 INCMP pin_entry *

services/registration/enter_location.vis

@@ -1,8 +1,8 @@
 CATCH incorrect_pin flag_incorrect_pin 1
-CATCH profile_update_success flag_allow_update 1
-LOAD save_location 0
+CATCH update_location flag_allow_update 1
 MOUT back 0
 HALT
+LOAD save_location 0
 RELOAD save_location
 INCMP _ 0
 INCMP pin_entry *

services/registration/enter_name.vis

@@ -1,12 +1,8 @@
 CATCH incorrect_pin flag_incorrect_pin 1
-CATCH profile_update_success flag_allow_update 1
-LOAD save_firstname 0
-RELOAD save_firstname 
+CATCH update_firstname flag_allow_update 1
 MOUT back 0
 HALT
+LOAD save_firstname 0
 RELOAD save_firstname
 INCMP _ 0
 INCMP pin_entry *
-
-
-

services/registration/enter_offerings.vis

@@ -1,5 +1,5 @@
 CATCH incorrect_pin flag_incorrect_pin 1
-CATCH profile_update_success flag_allow_update 1
+CATCH update_offerings flag_allow_update 1
 LOAD save_offerings 0
 MOUT back 0
 HALT

services/registration/enter_yob.vis

@@ -1,10 +1,10 @@
 CATCH incorrect_pin flag_incorrect_pin 1
-CATCH profile_update_success flag_allow_update 1
-LOAD save_yob 0
+CATCH update_yob flag_allow_update 1
 MOUT back 0
 HALT
 LOAD verify_yob 0
 CATCH incorrect_date_format flag_incorrect_date_format 1
+LOAD save_yob 0
 RELOAD save_yob
 INCMP _ 0
 INCMP pin_entry *

services/registration/locale/swa/default.po

@@ -1,8 +1,8 @@
 msgid "Your account balance is %s"
 msgstr "Salio lako ni %s"
 
-msgid "Your request has been sent. %s will receive %s from %s."
-msgstr "Ombi lako limetumwa. %s atapokea %s kutoka kwa %s."
+msgid "Your request has been sent. %s will receive %s %s from %s."
+msgstr "Ombi lako limetumwa. %s atapokea %s %s kutoka kwa %s."
 
 msgid "Thank you for using Sarafu. Goodbye!"
 msgstr "Asante kwa kutumia huduma ya Sarafu. Kwaheri!"

services/registration/main.vis

@@ -1,5 +1,9 @@
+LOAD set_default_voucher 8
+RELOAD set_default_voucher
 LOAD check_balance 64
 RELOAD check_balance
+LOAD check_vouchers 10
+RELOAD check_vouchers
 CATCH api_failure  flag_api_call_error  1
 MAP check_balance
 MOUT send 1
@@ -9,7 +13,7 @@ MOUT help 4
 MOUT quit 9
 HALT
 INCMP send 1
-INCMP quit 2
+INCMP my_vouchers 2
 INCMP my_account 3
 INCMP help 4
 INCMP quit 9

services/registration/my_vouchers

@@ -0,0 +1 @@
+My vouchers

services/registration/my_vouchers.vis

@@ -0,0 +1,8 @@
+LOAD reset_account_authorized 16
+RELOAD reset_account_authorized
+MOUT select_voucher 1
+MOUT voucher_details 2
+MOUT back 0
+HALT
+INCMP _ 0
+INCMP select_voucher 1

services/registration/no_voucher

@@ -0,0 +1 @@
+You need a voucher to send

services/registration/no_voucher.vis

@@ -0,0 +1,5 @@
+MOUT back 0
+MOUT quit 9
+HALT
+INCMP ^ 0
+INCMP quit 9

services/registration/no_voucher_swa

@@ -0,0 +1 @@
+Unahitaji sarafu kutuma

services/registration/pp.csv

@@ -14,4 +14,6 @@ flag,flag_valid_pin,20,this is set when the given PIN is valid
 flag,flag_allow_update,21,this is set to allow a user to update their profile data
 flag,flag_single_edit,22,this is set to allow a user to edit a single profile item such as year of birth
 flag,flag_incorrect_date_format,23,this is set when the given year of birth is invalid
-flag,flag_api_call_error,25,this is set when communication  to an external service fails
+flag,flag_incorrect_voucher,24,this is set when the selected voucher is invalid
+flag,flag_api_call_error,25,this is set when communication to an external service fails
+flag,flag_no_active_voucher,26,this is set when a user does not have an active voucher

services/registration/select_voucher

@@ -0,0 +1,2 @@
+Select number or symbol from your vouchers:
+{{.get_vouchers}}

services/registration/select_voucher.vis

@@ -0,0 +1,15 @@
+LOAD get_vouchers 0
+MAP get_vouchers
+MOUT back 0
+MOUT quit 99
+MNEXT next 11
+MPREV prev 22
+HALT
+LOAD view_voucher 80
+RELOAD view_voucher
+CATCH . flag_incorrect_voucher 1
+INCMP _ 0
+INCMP quit 99
+INCMP > 11
+INCMP < 22
+INCMP view_voucher *

services/registration/select_voucher_menu

@@ -0,0 +1 @@
+Select voucher

services/registration/select_voucher_swa

@@ -0,0 +1,2 @@
+Chagua nambari au ishara kutoka kwa salio zako:
+{{.get_vouchers}}

services/registration/send.vis

@@ -1,4 +1,5 @@
 LOAD transaction_reset 0
+CATCH no_voucher flag_no_active_voucher 1
 MOUT back 0
 HALT
 LOAD validate_recipient 20

services/registration/set_female.vis

@@ -1,4 +1,4 @@
 LOAD save_gender 0
 CATCH incorrect_pin flag_incorrect_pin 1
-CATCH profile_update_success flag_allow_update 1
+CATCH update_gender flag_allow_update 1
 MOVE pin_entry

services/registration/set_male.vis

@@ -1,4 +1,4 @@
 LOAD save_gender 0
 CATCH incorrect_pin flag_incorrect_pin 1
-CATCH profile_update_success flag_allow_update 1
+CATCH update_gender flag_allow_update 1
 MOVE pin_entry

services/registration/set_unspecified.vis

@@ -1,4 +1,4 @@
 LOAD save_gender 0
 CATCH incorrect_pin flag_incorrect_pin 1
-CATCH profile_update_success flag_allow_update 1
+CATCH update_gender flag_allow_update 1
 MOVE pin_entry

services/registration/update_age

@@ -0,0 +1,2 @@
+RELOAD save_yob
+CATCH profile_update_success flag_allow_update 1

services/registration/update_familyname.vis

@@ -0,0 +1,2 @@
+RELOAD save_familyname
+CATCH profile_update_success flag_allow_update 1

services/registration/update_firstname.vis

@@ -0,0 +1,2 @@
+RELOAD save_firstname
+CATCH profile_update_success flag_allow_update 1

services/registration/update_gender.vis

@@ -0,0 +1,2 @@
+RELOAD save_gender
+CATCH profile_update_success flag_allow_update 1

services/registration/update_location.vis

@@ -0,0 +1,2 @@
+RELOAD save_location
+CATCH profile_update_success flag_allow_update 1

services/registration/update_offerings.vis

@@ -0,0 +1,2 @@
+RELOAD save_offerings
+CATCH profile_update_success flag_allow_update 1

services/registration/update_yob.vis

@@ -0,0 +1,2 @@
+RELOAD save_yob
+CATCH profile_update_success flag_allow_update 1

services/registration/view_voucher

@@ -0,0 +1,2 @@
+Enter PIN to confirm selection:
+{{.view_voucher}}

services/registration/view_voucher.vis

@@ -0,0 +1,10 @@
+MAP view_voucher
+MOUT back 0
+MOUT quit 9
+LOAD authorize_account 6
+HALT
+RELOAD authorize_account
+CATCH incorrect_pin flag_incorrect_pin 1
+INCMP _ 0
+INCMP quit 9
+INCMP voucher_set *

services/registration/view_voucher_swa

@@ -0,0 +1,2 @@
+Weka PIN ili kuthibitisha chaguo:
+{{.view_voucher}}

services/registration/voucher_details_menu

@@ -0,0 +1 @@
+Voucher details

services/registration/voucher_set

@@ -0,0 +1 @@
+Success! {{.set_voucher}} is now your active voucher.

services/registration/voucher_set.vis

@@ -0,0 +1,10 @@
+LOAD reset_incorrect 6
+CATCH incorrect_pin flag_incorrect_pin 1
+CATCH _ flag_account_authorized 0
+LOAD set_voucher 12
+MAP set_voucher
+MOUT back 0
+MOUT quit 9
+HALT
+INCMP ^ 0
+INCMP quit 9

services/registration/voucher_set_swa

@@ -0,0 +1 @@
+Hongera! {{.set_voucher}} ni Sarafu inayotumika sasa.