cmd/africastalking/main.go

@@ -20,6 +20,7 @@ import (
 	"git.defalsify.org/vise.git/logging"
 	"git.defalsify.org/vise.git/resource"
 
+	"git.grassecon.net/urdt/ussd/common"
 	"git.grassecon.net/urdt/ussd/config"
 	"git.grassecon.net/urdt/ussd/initializers"
 	"git.grassecon.net/urdt/ussd/internal/handlers"
@@ -44,14 +45,14 @@ type atRequestParser struct{}
 func (arp *atRequestParser) GetSessionId(rq any) (string, error) {
 	rqv, ok := rq.(*http.Request)
 	if !ok {
-		log.Println("got an invalid request:", rq)
+		log.Printf("got an invalid request:", rq)
 		return "", handlers.ErrInvalidRequest
 	}
 
 	// Capture body (if any) for logging
 	body, err := io.ReadAll(rqv.Body)
 	if err != nil {
-		log.Println("failed to read request body:", err)
+		log.Printf("failed to read request body:", err)
 		return "", fmt.Errorf("failed to read request body: %v", err)
 	}
 	// Reset the body for further reading
@@ -61,13 +62,13 @@ func (arp *atRequestParser) GetSessionId(rq any) (string, error) {
 	bodyLog := map[string]string{"body": string(body)}
 	logBytes, err := json.Marshal(bodyLog)
 	if err != nil {
-		log.Println("failed to marshal request body:", err)
+		log.Printf("failed to marshal request body:", err)
 	} else {
-		log.Println("Received request:", string(logBytes))
+		log.Printf("Received request:", string(logBytes))
 	}
 
 	if err := rqv.ParseForm(); err != nil {
-		log.Println("failed to parse form data: %v", err)
+		log.Printf("failed to parse form data: %v", err)
 		return "", fmt.Errorf("failed to parse form data: %v", err)
 	}
 
@@ -76,7 +77,13 @@ func (arp *atRequestParser) GetSessionId(rq any) (string, error) {
 		return "", fmt.Errorf("no phone number found")
 	}
 
-	return phoneNumber, nil
+	formattedNumber, err := common.FormatPhoneNumber(phoneNumber)
+	if err != nil {
+		fmt.Printf("Error: %v\n", err)
+		return "", fmt.Errorf("failed to format number")
+	}
+
+	return formattedNumber, nil
 }
 
 func (arp *atRequestParser) GetInput(rq any) ([]byte, error) {

common/recipient.go

@@ -0,0 +1,73 @@
+package common
+
+import (
+	"errors"
+	"fmt"
+	"regexp"
+	"strings"
+)
+
+// Define the regex patterns as constants
+const (
+	phoneRegex   = `^(?:\+254|254|0)?((?:7[0-9]{8})|(?:1[01][0-9]{7}))$`
+	addressRegex = `^0x[a-fA-F0-9]{40}$`
+	aliasRegex   = `^[a-zA-Z0-9]+$`
+)
+
+// IsValidPhoneNumber checks if the given number is a valid phone number
+func IsValidPhoneNumber(phonenumber string) bool {
+	match, _ := regexp.MatchString(phoneRegex, phonenumber)
+	return match
+}
+
+// IsValidAddress checks if the given address is a valid Ethereum address
+func IsValidAddress(address string) bool {
+	match, _ := regexp.MatchString(addressRegex, address)
+	return match
+}
+
+// IsValidAlias checks if the alias is a valid alias format
+func IsValidAlias(alias string) bool {
+	match, _ := regexp.MatchString(aliasRegex, alias)
+	return match
+}
+
+// CheckRecipient validates the recipient format based on the criteria
+func CheckRecipient(recipient string) (string, error) {
+	if IsValidPhoneNumber(recipient) {
+		return "phone number", nil
+	}
+
+	if IsValidAddress(recipient) {
+		return "address", nil
+	}
+
+	if IsValidAlias(recipient) {
+		return "alias", nil
+	}
+
+	return "", fmt.Errorf("invalid recipient: must be a phone number, address or alias")
+}
+
+// FormatPhoneNumber formats a Kenyan phone number to "+254xxxxxxxx".
+func FormatPhoneNumber(phone string) (string, error) {
+	if !IsValidPhoneNumber(phone) {
+		return "", errors.New("invalid phone number")
+	}
+
+	// Remove any leading "+" and spaces
+	phone = strings.TrimPrefix(phone, "+")
+	phone = strings.ReplaceAll(phone, " ", "")
+
+	// Replace leading "0" with "254" if present
+	if strings.HasPrefix(phone, "0") {
+		phone = "254" + phone[1:]
+	}
+
+	// Add "+" if not already present
+	if !strings.HasPrefix(phone, "254") {
+		return "", errors.New("unexpected format")
+	}
+
+	return "+" + phone, nil
+}

common/transfer_statements.go

@@ -0,0 +1,119 @@
+package common
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"time"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
+	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
+)
+
+// TransferMetadata helps organize data fields
+type TransferMetadata struct {
+	Senders        string
+	Recipients     string
+	TransferValues string
+	Addresses      string
+	TxHashes       string
+	Dates          string
+	Symbols        string
+	Decimals       string
+}
+
+// ProcessTransfers converts transfers into formatted strings
+func ProcessTransfers(transfers []dataserviceapi.Last10TxResponse) TransferMetadata {
+	var data TransferMetadata
+	var senders, recipients, transferValues, addresses, txHashes, dates, symbols, decimals []string
+
+	for _, t := range transfers {
+		senders = append(senders, t.Sender)
+		recipients = append(recipients, t.Recipient)
+
+		// Scale down the amount
+		scaledBalance := ScaleDownBalance(t.TransferValue, t.TokenDecimals)
+		transferValues = append(transferValues, scaledBalance)
+
+		addresses = append(addresses, t.ContractAddress)
+		txHashes = append(txHashes, t.TxHash)
+		dates = append(dates, fmt.Sprintf("%s", t.DateBlock))
+		symbols = append(symbols, t.TokenSymbol)
+		decimals = append(decimals, t.TokenDecimals)
+	}
+
+	data.Senders = strings.Join(senders, "\n")
+	data.Recipients = strings.Join(recipients, "\n")
+	data.TransferValues = strings.Join(transferValues, "\n")
+	data.Addresses = strings.Join(addresses, "\n")
+	data.TxHashes = strings.Join(txHashes, "\n")
+	data.Dates = strings.Join(dates, "\n")
+	data.Symbols = strings.Join(symbols, "\n")
+	data.Decimals = strings.Join(decimals, "\n")
+
+	return data
+}
+
+// GetTransferData retrieves and matches transfer data
+// returns a formatted string of the full transaction/statement
+func GetTransferData(ctx context.Context, db storage.PrefixDb, publicKey string, index int) (string, error) {
+	keys := []string{"txfrom", "txto", "txval", "txaddr", "txhash", "txdate", "txsym"}
+	data := make(map[string]string)
+
+	for _, key := range keys {
+		value, err := db.Get(ctx, []byte(key))
+		if err != nil {
+			return "", fmt.Errorf("failed to get %s: %v", key, err)
+		}
+		data[key] = string(value)
+	}
+
+	// Split the data
+	senders := strings.Split(string(data["txfrom"]), "\n")
+	recipients := strings.Split(string(data["txto"]), "\n")
+	values := strings.Split(string(data["txval"]), "\n")
+	addresses := strings.Split(string(data["txaddr"]), "\n")
+	hashes := strings.Split(string(data["txhash"]), "\n")
+	dates := strings.Split(string(data["txdate"]), "\n")
+	syms := strings.Split(string(data["txsym"]), "\n")
+
+	// Check if index is within range
+	if index < 1 || index > len(senders) {
+		return "", fmt.Errorf("transaction not found: index %d out of range", index)
+	}
+
+	// Adjust for 0-based indexing
+	i := index - 1
+	transactionType := "received"
+	party := fmt.Sprintf("from: %s", strings.TrimSpace(senders[i]))
+	if strings.TrimSpace(senders[i]) == publicKey {
+		transactionType = "sent"
+		party = fmt.Sprintf("to: %s", strings.TrimSpace(recipients[i]))
+	}
+
+	formattedDate := formatDate(strings.TrimSpace(dates[i]))
+
+	// Build the full transaction detail
+	detail := fmt.Sprintf(
+		"%s %s %s\n%s\ncontract address: %s\ntxhash: %s\ndate: %s",
+		transactionType,
+		strings.TrimSpace(values[i]),
+		strings.TrimSpace(syms[i]),
+		party,
+		strings.TrimSpace(addresses[i]),
+		strings.TrimSpace(hashes[i]),
+		formattedDate,
+	)
+
+	return detail, nil
+}
+
+// Helper function to format date in desired output
+func formatDate(dateStr string) string {
+	parsedDate, err := time.Parse("2006-01-02 15:04:05 -0700 MST", dateStr)
+	if err != nil {
+		fmt.Println("Error parsing date:", err)
+		return ""
+	}
+	return parsedDate.Format("2006-01-02 03:04:05 PM")
+}

config/config.go

@@ -15,6 +15,7 @@ const (
 	voucherHoldingsPathPrefix  = "/api/v1/holdings"
 	voucherTransfersPathPrefix = "/api/v1/transfers/last10"
 	voucherDataPathPrefix      = "/api/v1/token"
+	AliasPrefix                = "api/v1/alias"
 )
 
 var (
@@ -32,6 +33,7 @@ var (
 	VoucherHoldingsURL  string
 	VoucherTransfersURL string
 	VoucherDataURL      string
+	CheckAliasURL       string
 )
 
 func setBase() error {
@@ -66,6 +68,7 @@ func LoadConfig() error {
 	VoucherHoldingsURL, _ = url.JoinPath(dataURLBase, voucherHoldingsPathPrefix)
 	VoucherTransfersURL, _ = url.JoinPath(dataURLBase, voucherTransfersPathPrefix)
 	VoucherDataURL, _ = url.JoinPath(dataURLBase, voucherDataPathPrefix)
+	CheckAliasURL, _ = url.JoinPath(dataURLBase, AliasPrefix)
 
 	return nil
 }

go.mod

@@ -2,29 +2,16 @@ module git.grassecon.net/urdt/ussd
 
 go 1.23.0
 
-toolchain go1.23.2
-
 require (
-	git.defalsify.org/vise.git v0.2.1-0.20241017112704-307fa6fcdc6b
+	git.defalsify.org/vise.git v0.2.1-0.20241122120231-9e9ee5bdfa7a
 	github.com/alecthomas/assert/v2 v2.2.2
+	github.com/gofrs/uuid v4.4.0+incompatible
 	github.com/grassrootseconomics/eth-custodial v1.3.0-beta
-	github.com/peteole/testdata-loader v0.3.0
+	github.com/grassrootseconomics/ussd-data-service v1.2.0-beta
-	gopkg.in/leonelquinteros/gotext.v1 v1.3.1
-)
-
-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/peteole/testdata-loader v0.3.0
-	github.com/rogpeppe/go-internal v1.13.1 // indirect
+	github.com/stretchr/testify v1.9.0
-	golang.org/x/crypto v0.27.0 // indirect
+	gopkg.in/leonelquinteros/gotext.v1 v1.3.1
-	golang.org/x/sync v0.8.0 // indirect
-	golang.org/x/text v0.18.0 // indirect
 )
 
 require (
@@ -33,13 +20,20 @@ require (
 	github.com/barbashov/iso639-3 v0.0.0-20211020172741-1f4ffb2d8d1c // 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/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/kr/text v0.2.0 // indirect
 	github.com/mattn/kinako v0.0.0-20170717041458-332c0a7e205a // indirect
 	github.com/pmezard/go-difflib v1.0.1-0.20181226105442-5d4384ee4fb2 // indirect
+	github.com/rogpeppe/go-internal v1.13.1 // indirect
 	github.com/stretchr/objx v0.5.2 // indirect
-	github.com/stretchr/testify v1.9.0
 	github.com/x448/float16 v0.8.4 // 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
 	gopkg.in/yaml.v3 v3.0.1 // indirect
 )

go.sum

@@ -1,5 +1,5 @@
-git.defalsify.org/vise.git v0.2.1-0.20241017112704-307fa6fcdc6b h1:dxBplsIlzJHV+5EH+gzB+w08Blt7IJbb2jeRe1OEjLU=
+git.defalsify.org/vise.git v0.2.1-0.20241122120231-9e9ee5bdfa7a h1:LvGKktk0kUnuRN3nF9r15D8OoV0sFaMmQr52kGq2gtE=
-git.defalsify.org/vise.git v0.2.1-0.20241017112704-307fa6fcdc6b/go.mod h1:jyBMe1qTYUz3mmuoC9JQ/TvFeW0vTanCUcPu3H8p4Ck=
+git.defalsify.org/vise.git v0.2.1-0.20241122120231-9e9ee5bdfa7a/go.mod h1:jyBMe1qTYUz3mmuoC9JQ/TvFeW0vTanCUcPu3H8p4Ck=
 github.com/alecthomas/assert/v2 v2.2.2 h1:Z/iVC0xZfWTaFNE6bA3z07T86hd45Xe2eLt6WVy2bbk=
 github.com/alecthomas/assert/v2 v2.2.2/go.mod h1:pXcQ2Asjp247dahGEmsZ6ru0UVwnkhktn7S0bBDLxvQ=
 github.com/alecthomas/participle/v2 v2.0.0 h1:Fgrq+MbuSsJwIkw3fEj9h75vDP0Er5JzepJ0/HNHv0g=
@@ -18,8 +18,8 @@ github.com/gofrs/uuid v4.4.0+incompatible h1:3qXRTX8/NbyulANqlc0lchS1gqAVxRgsuW1
 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 v1.2.0-beta h1:fn1gwbWIwHVEBtUC2zi5OqTlfI/5gU1SMk0fgGixIXk=
-github.com/grassrootseconomics/ussd-data-service v0.0.0-20241003123429-4904b4438a3a/go.mod h1:hdKaKwqiW6/kphK4j/BhmuRlZDLo1+DYo3gYw5O0siw=
+github.com/grassrootseconomics/ussd-data-service v1.2.0-beta/go.mod h1:omfI0QtUwIdpu9gMcUqLMCG8O1XWjqJGBx1qUMiGWC0=
 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=

internal/handlers/handlerservice.go

@@ -118,6 +118,9 @@ func (ls *LocalHandlerService) GetHandler(accountService remote.AccountServiceIn
 	ls.DbRs.AddLocalFunc("reset_others_pin", ussdHandlers.ResetOthersPin)
 	ls.DbRs.AddLocalFunc("save_others_temporary_pin", ussdHandlers.SaveOthersTemporaryPin)
 	ls.DbRs.AddLocalFunc("get_current_profile_info", ussdHandlers.GetCurrentProfileInfo)
+	ls.DbRs.AddLocalFunc("check_transactions", ussdHandlers.CheckTransactions)
+	ls.DbRs.AddLocalFunc("get_transactions", ussdHandlers.GetTransactionsList)
+	ls.DbRs.AddLocalFunc("view_statement", ussdHandlers.ViewTransactionStatement)
 
 	return ussdHandlers, nil
 }

internal/handlers/ussd/menuhandler.go

@@ -35,12 +35,17 @@ var (
 	errResponse    *api.ErrResponse
 )
 
-// Define the regex patterns as  constants
+// Define the regex patterns as constants
 const (
-	phoneRegex = `(\(\d{3}\)\s?|\d{3}[-.\s]?)?\d{3}[-.\s]?\d{4}`
 	pinPattern = `^\d{4}$`
 )
 
+// isValidPIN checks whether the given input is a 4 digit number
+func isValidPIN(pin string) bool {
+	match, _ := regexp.MatchString(pinPattern, pin)
+	return match
+}
+
 // FlagManager handles centralized flag management
 type FlagManager struct {
 	parser *asm.FlagParser
@@ -95,17 +100,6 @@ func NewHandlers(appFlags *asm.FlagParser, userdataStore db.Db, adminstore *util
 	return h, nil
 }
 
-// isValidPIN checks whether the given input is a 4 digit number
-func isValidPIN(pin string) bool {
-	match, _ := regexp.MatchString(pinPattern, pin)
-	return match
-}
-
-func isValidPhoneNumber(phonenumber string) bool {
-	match, _ := regexp.MatchString(phoneRegex, phonenumber)
-	return match
-}
-
 func (h *Handlers) WithPersister(pe *persist.Persister) *Handlers {
 	if h.pe != nil {
 		panic("persister already set")
@@ -877,7 +871,7 @@ func (h *Handlers) ValidateBlockedNumber(ctx context.Context, sym string, input
 	}
 	blockedNumber := string(input)
 	_, err = store.ReadEntry(ctx, blockedNumber, common.DATA_PUBLIC_KEY)
-	if !isValidPhoneNumber(blockedNumber) {
+	if !common.IsValidPhoneNumber(blockedNumber) {
 		res.FlagSet = append(res.FlagSet, flag_unregistered_number)
 		return res, nil
 	}
@@ -898,10 +892,9 @@ func (h *Handlers) ValidateBlockedNumber(ctx context.Context, sym string, input
 	return res, nil
 }
 
-// ValidateRecipient validates that the given input is a valid phone number.
+// ValidateRecipient validates that the given input is valid.
 func (h *Handlers) ValidateRecipient(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)
@@ -909,13 +902,16 @@ func (h *Handlers) ValidateRecipient(ctx context.Context, sym string, input []by
 		return res, fmt.Errorf("missing session")
 	}
 
-	recipient := string(input)
-
 	flag_invalid_recipient, _ := h.flagManager.GetFlag("flag_invalid_recipient")
 	flag_invalid_recipient_with_invite, _ := h.flagManager.GetFlag("flag_invalid_recipient_with_invite")
+	flag_api_error, _ := h.flagManager.GetFlag("flag_api_call_error")
+
+	recipient := string(input)
 
 	if recipient != "0" {
-		if !isValidPhoneNumber(recipient) {
+		recipientType, err := common.CheckRecipient(recipient)
+		if err != nil {
+			// Invalid recipient format (not a phone number, address, or valid alias format)
 			res.FlagSet = append(res.FlagSet, flag_invalid_recipient)
 			res.Content = recipient
 
@@ -929,25 +925,61 @@ func (h *Handlers) ValidateRecipient(ctx context.Context, sym string, input []by
 			return res, err
 		}
 
-		publicKey, err := store.ReadEntry(ctx, recipient, common.DATA_PUBLIC_KEY)
+		switch recipientType {
-		if err != nil {
+		case "phone number":
-			if db.IsNotFound(err) {
+			// format the phone number
-				logg.InfoCtxf(ctx, "Unregistered number")
+			formattedNumber, err := common.FormatPhoneNumber(recipient)
-
+			if err != nil {
-				res.FlagSet = append(res.FlagSet, flag_invalid_recipient_with_invite)
+				logg.ErrorCtxf(ctx, "Failed to format the phone number: %s", recipient, "error", err)
-				res.Content = recipient
+				return res, err
-
-				return res, nil
 			}
 
-			logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", common.DATA_PUBLIC_KEY, "error", err)
+			// Check if the phone number is registered
-			return res, err
+			publicKey, err := store.ReadEntry(ctx, formattedNumber, common.DATA_PUBLIC_KEY)
-		}
+			if err != nil {
+				if db.IsNotFound(err) {
+					logg.InfoCtxf(ctx, "Unregistered phone number: %s", recipient)
+					res.FlagSet = append(res.FlagSet, flag_invalid_recipient_with_invite)
+					res.Content = recipient
+					return res, nil
+				}
 
-		err = store.WriteEntry(ctx, sessionId, common.DATA_RECIPIENT, publicKey)
+				logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", common.DATA_PUBLIC_KEY, "error", err)
-		if err != nil {
+				return res, err
-			logg.ErrorCtxf(ctx, "failed to write recipient entry with", "key", common.DATA_RECIPIENT, "value", string(publicKey), "error", err)
+			}
-			return res, nil
+
+			// Save the publicKey as the recipient
+			err = store.WriteEntry(ctx, sessionId, common.DATA_RECIPIENT, publicKey)
+			if err != nil {
+				logg.ErrorCtxf(ctx, "failed to write recipient entry with", "key", common.DATA_RECIPIENT, "value", string(publicKey), "error", err)
+				return res, err
+			}
+
+		case "address":
+			// Save the valid Ethereum address as the recipient
+			err = store.WriteEntry(ctx, sessionId, common.DATA_RECIPIENT, []byte(recipient))
+			if err != nil {
+				logg.ErrorCtxf(ctx, "failed to write recipient entry with", "key", common.DATA_RECIPIENT, "value", recipient, "error", err)
+				return res, err
+			}
+
+		case "alias":
+			// Call the API to validate and retrieve the address for the alias
+			r, aliasErr := h.accountService.CheckAliasAddress(ctx, recipient)
+			if aliasErr != nil {
+				res.FlagSet = append(res.FlagSet, flag_api_error)
+				res.Content = recipient
+
+				logg.ErrorCtxf(ctx, "failed on CheckAliasAddress", "error", aliasErr)
+				return res, err
+			}
+
+			// Alias validation succeeded, save the Ethereum address
+			err = store.WriteEntry(ctx, sessionId, common.DATA_RECIPIENT, []byte(r.Address))
+			if err != nil {
+				logg.ErrorCtxf(ctx, "failed to write recipient entry with", "key", common.DATA_RECIPIENT, "value", r.Address, "error", err)
+				return res, err
+			}
 		}
 	}
 
@@ -1632,3 +1664,172 @@ func (h *Handlers) GetVoucherDetails(ctx context.Context, sym string, input []by
 
 	return res, nil
 }
+
+// CheckTransactions retrieves the transactions from the API using the "PublicKey" and stores to prefixDb
+func (h *Handlers) CheckTransactions(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_no_transfers, _ := h.flagManager.GetFlag("flag_no_transfers")
+	flag_api_error, _ := h.flagManager.GetFlag("flag_api_error")
+
+	store := h.userdataStore
+	publicKey, err := store.ReadEntry(ctx, sessionId, common.DATA_PUBLIC_KEY)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", common.DATA_PUBLIC_KEY, "error", err)
+		return res, err
+	}
+
+	// Fetch transactions from the API using the public key
+	transactionsResp, err := h.accountService.FetchTransactions(ctx, string(publicKey))
+	if err != nil {
+		res.FlagSet = append(res.FlagSet, flag_api_error)
+		logg.ErrorCtxf(ctx, "failed on FetchTransactions", "error", err)
+		return res, err
+	}
+
+	// Return if there are no transactions
+	if len(transactionsResp) == 0 {
+		res.FlagSet = append(res.FlagSet, flag_no_transfers)
+		return res, nil
+	}
+
+	data := common.ProcessTransfers(transactionsResp)
+
+	// Store all transaction data
+	dataMap := map[string]string{
+		"txfrom": data.Senders,
+		"txto":   data.Recipients,
+		"txval":  data.TransferValues,
+		"txaddr": data.Addresses,
+		"txhash": data.TxHashes,
+		"txdate": data.Dates,
+		"txsym":  data.Symbols,
+		"txdeci": data.Decimals,
+	}
+
+	for key, value := range dataMap {
+		if err := h.prefixDb.Put(ctx, []byte(key), []byte(value)); err != nil {
+			logg.ErrorCtxf(ctx, "failed to write to prefixDb", "error", err)
+			return res, err
+		}
+	}
+
+	res.FlagReset = append(res.FlagReset, flag_no_transfers)
+
+	return res, nil
+}
+
+// GetTransactionsList fetches the list of transactions and formats them
+func (h *Handlers) GetTransactionsList(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, common.DATA_PUBLIC_KEY)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", common.DATA_PUBLIC_KEY, "error", err)
+		return res, err
+	}
+
+	// Read transactions from the store and format them
+	TransactionSenders, err := h.prefixDb.Get(ctx, []byte("txfrom"))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read the TransactionSenders from prefixDb", "error", err)
+		return res, err
+	}
+	TransactionSyms, err := h.prefixDb.Get(ctx, []byte("txsym"))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read the TransactionSyms from prefixDb", "error", err)
+		return res, err
+	}
+	TransactionValues, err := h.prefixDb.Get(ctx, []byte("txval"))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read the TransactionValues from prefixDb", "error", err)
+		return res, err
+	}
+	TransactionDates, err := h.prefixDb.Get(ctx, []byte("txdate"))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read the TransactionDates from prefixDb", "error", err)
+		return res, err
+	}
+
+	// Parse the data
+	senders := strings.Split(string(TransactionSenders), "\n")
+	syms := strings.Split(string(TransactionSyms), "\n")
+	values := strings.Split(string(TransactionValues), "\n")
+	dates := strings.Split(string(TransactionDates), "\n")
+
+	var formattedTransactions []string
+	for i := 0; i < len(senders); i++ {
+		sender := strings.TrimSpace(senders[i])
+		sym := strings.TrimSpace(syms[i])
+		value := strings.TrimSpace(values[i])
+		date := strings.Split(strings.TrimSpace(dates[i]), " ")[0]
+
+		status := "received"
+		if sender == string(publicKey) {
+			status = "sent"
+		}
+
+		formattedTransactions = append(formattedTransactions, fmt.Sprintf("%d:%s %s %s %s", i+1, status, value, sym, date))
+	}
+
+	res.Content = strings.Join(formattedTransactions, "\n")
+
+	return res, nil
+}
+
+// ViewTransactionStatement retrieves the transaction statement
+// and displays it to the user
+func (h *Handlers) ViewTransactionStatement(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, common.DATA_PUBLIC_KEY)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", common.DATA_PUBLIC_KEY, "error", err)
+		return res, err
+	}
+
+	flag_incorrect_statement, _ := h.flagManager.GetFlag("flag_incorrect_statement")
+
+	inputStr := string(input)
+	if inputStr == "0" || inputStr == "99" || inputStr == "11" || inputStr == "22" {
+		res.FlagReset = append(res.FlagReset, flag_incorrect_statement)
+		return res, nil
+	}
+
+	// Convert input string to integer
+	index, err := strconv.Atoi(strings.TrimSpace(inputStr))
+	if err != nil {
+		return res, fmt.Errorf("invalid input: must be a number between 1 and 10")
+	}
+
+	if index < 1 || index > 10 {
+		return res, fmt.Errorf("invalid input: index must be between 1 and 10")
+	}
+
+	statement, err := common.GetTransferData(ctx, h.prefixDb, string(publicKey), index)
+	if err != nil {
+		return res, fmt.Errorf("failed to retrieve transfer data: %v", err)
+	}
+
+	if statement == "" {
+		res.FlagSet = append(res.FlagSet, flag_incorrect_statement)
+		return res, nil
+	}
+
+	res.FlagReset = append(res.FlagReset, flag_incorrect_statement)
+	res.Content = statement
+
+	return res, nil
+}

internal/storage/gdbm.go

@@ -4,8 +4,8 @@ import (
 	"context"
 
 	"git.defalsify.org/vise.git/db"
-	"git.defalsify.org/vise.git/lang"
 	gdbmdb "git.defalsify.org/vise.git/db/gdbm"
+	"git.defalsify.org/vise.git/lang"
 )
 
 var (
@@ -114,3 +114,8 @@ func(tdb *ThreadGdbmDb) Close() error {
 	tdb.db = nil
 	return err
 }
+
+func(tdb *ThreadGdbmDb) Dump(_ context.Context, _ []byte) (*db.Dumper, error) {
+	logg.Warnf("method not implemented for thread gdbm db")
+	return nil, nil
+}

internal/testutil/mocks/servicemock.go

@@ -47,3 +47,8 @@ func (m *MockAccountService) TokenTransfer(ctx context.Context, amount, from, to
 	args := m.Called()
 	return args.Get(0).(*models.TokenTransferResponse), args.Error(1)
 }
+
+func (m *MockAccountService) CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error) {
+	args := m.Called()
+	return args.Get(0).(*dataserviceapi.AliasAddress), args.Error(1)
+}

internal/testutil/testservice/TestAccountService.go

@@ -33,8 +33,8 @@ func (tas *TestAccountService) TrackAccountStatus(ctx context.Context, publicKey
 }
 
 func (tas *TestAccountService) FetchVouchers(ctx context.Context, publicKey string) ([]dataserviceapi.TokenHoldings, error) {
-	return []dataserviceapi.TokenHoldings {
+	return []dataserviceapi.TokenHoldings{
-		dataserviceapi.TokenHoldings {
+		dataserviceapi.TokenHoldings{
 			ContractAddress: "0x6CC75A06ac72eB4Db2eE22F781F5D100d8ec03ee",
 			TokenSymbol:     "SRF",
 			TokenDecimals:   "6",
@@ -56,3 +56,7 @@ func (tas *TestAccountService) TokenTransfer(ctx context.Context, amount, from,
 		TrackingId: "e034d147-747d-42ea-928d-b5a7cb3426af",
 	}, nil
 }
+
+func (m TestAccountService) CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error) {
+	return &dataserviceapi.AliasAddress{}, nil
+}

internal/testutil/testtag/onlinetest.go

@@ -2,8 +2,8 @@
 
 package testtag
 
-import "git.grassecon.net/urdt/ussd/internal/handlers/server"
+import "git.grassecon.net/urdt/ussd/remote"
 
 var (
-	AccountService server.AccountServiceInterface
+	AccountService remote.AccountServiceInterface
 )

menutraversal_test/test_setup.json

@@ -61,7 +61,7 @@
                     },
                     {
                         "input": "1",
-                        "expectedContent": "Enter recipient's phone number:\n0:Back"
+                        "expectedContent": "Enter recipient's phone number/address/alias:\n0:Back"
                     },
                     {
                         "input": "000",
@@ -69,7 +69,7 @@
                     },
                     {
                         "input": "1",
-                        "expectedContent": "Enter recipient's phone number:\n0:Back"
+                        "expectedContent": "Enter recipient's phone number/address/alias:\n0:Back"
                     },
                     {
                         "input": "0712345678",

remote/accountservice.go

@@ -24,6 +24,7 @@ type AccountServiceInterface interface {
 	FetchTransactions(ctx context.Context, publicKey string) ([]dataserviceapi.Last10TxResponse, error)
 	VoucherData(ctx context.Context, address string) (*models.VoucherDataResult, error)
 	TokenTransfer(ctx context.Context, amount, from, to, tokenAddress string) (*models.TokenTransferResponse, error)
+	CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error)
 }
 
 type AccountService struct {
@@ -209,6 +210,26 @@ func (as *AccountService) TokenTransfer(ctx context.Context, amount, from, to, t
 	return &r, nil
 }
 
+// CheckAliasAddress retrieves the address of an alias from the API endpoint.
+// Parameters:
+//   - alias: The alias of the user.
+func (as *AccountService) CheckAliasAddress(ctx context.Context, alias string) (*dataserviceapi.AliasAddress, error) {
+	var r dataserviceapi.AliasAddress
+
+	ep, err := url.JoinPath(config.CheckAliasURL, alias)
+	if err != nil {
+		return nil, err
+	}
+
+	req, err := http.NewRequest("GET", ep, nil)
+	if err != nil {
+		return nil, err
+	}
+
+	_, err = doRequest(ctx, req, &r)
+	return &r, err
+}
+
 func doRequest(ctx context.Context, req *http.Request, rcpt any) (*api.OKResponse, error) {
 	var okResponse api.OKResponse
 	var errResponse api.ErrResponse

services/registration/check_statement

@@ -0,0 +1 @@
+Please enter your PIN to view statement:

services/registration/check_statement.vis

@@ -0,0 +1,12 @@
+LOAD check_transactions 0
+RELOAD check_transactions
+CATCH no_transfers flag_no_transfers 1
+LOAD authorize_account 6
+MOUT back 0
+MOUT quit 9
+HALT
+RELOAD authorize_account
+CATCH incorrect_pin flag_incorrect_pin 1
+INCMP _ 0
+INCMP quit 9
+INCMP transactions *

services/registration/check_statement_swa

@@ -0,0 +1 @@
+Tafadhali weka PIN yako kuona taarifa ya matumizi:

services/registration/my_account.vis

@@ -11,5 +11,6 @@ INCMP main 0
 INCMP edit_profile 1
 INCMP change_language 2
 INCMP balances 3
+INCMP check_statement 4
 INCMP pin_management 5
 INCMP address 6

services/registration/no_transfers

@@ -0,0 +1 @@
+No transfers history

services/registration/no_transfers.vis

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

services/registration/no_transfers_swa

@@ -0,0 +1 @@
+Hakuna historia kwa akaunti yako

services/registration/pp.csv

@@ -19,3 +19,5 @@ flag,flag_api_call_error,25,this is set when communication to an external servic
 flag,flag_no_active_voucher,26,this is set when a user does not have an active voucher
 flag,flag_admin_privilege,27,this is set when a user has admin privileges.
 flag,flag_unregistered_number,28,this is set when an unregistered phonenumber tries to perform an action
+flag,flag_no_transfers,29,this is set when a user does not have any transactions
+flag,flag_incorrect_statement,30,this is set when the selected statement is invalid

services/registration/send

@@ -1 +1 @@
-Enter recipient's phone number:
+Enter recipient's phone number/address/alias:

services/registration/transactions

@@ -0,0 +1 @@
+{{.get_transactions}}

services/registration/transactions.vis

@@ -0,0 +1,15 @@
+LOAD get_transactions 0
+MAP get_transactions
+MOUT back 0
+MOUT quit 99
+MNEXT next 11
+MPREV prev 22
+HALT
+LOAD view_statement 0
+RELOAD view_statement
+CATCH . flag_incorrect_statement 1
+INCMP ^ 0
+INCMP quit 99
+INCMP > 11
+INCMP < 22
+INCMP view_statement *

services/registration/transactions_swa

@@ -0,0 +1 @@
+{{.get_transactions}}

services/registration/view_statement

@@ -0,0 +1 @@
+{{.view_statement}}

services/registration/view_statement.vis

@@ -0,0 +1,10 @@
+MAP view_statement
+MOUT back 0
+MOUT quit 9
+MNEXT next 11
+MPREV prev 22
+HALT
+INCMP _ 0
+INCMP quit 9
+INCMP > 11
+INCMP < 22