return an event channel for the test engine

This reverts commit 188cb573dd.

.gitignore

@@ -4,3 +4,5 @@ go.work*
 **/*/*.bin
 **/*/.state/
 cmd/.state/
+id_*
+*.gdbm

cmd/africastalking/main.go

@@ -0,0 +1,169 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"net/http"
+	"os"
+	"os/signal"
+	"path"
+	"strconv"
+	"strings"
+	"syscall"
+
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/logging"
+	"git.defalsify.org/vise.git/resource"
+
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+	"git.grassecon.net/urdt/ussd/internal/handlers/server"
+	httpserver "git.grassecon.net/urdt/ussd/internal/http"
+	"git.grassecon.net/urdt/ussd/internal/storage"
+)
+
+var (
+	logg      = logging.NewVanilla()
+	scriptDir = path.Join("services", "registration")
+)
+
+type atRequestParser struct{}
+
+func (arp *atRequestParser) GetSessionId(rq any) (string, error) {
+	rqv, ok := rq.(*http.Request)
+	if !ok {
+		return "", handlers.ErrInvalidRequest
+	}
+	if err := rqv.ParseForm(); err != nil {
+		return "", fmt.Errorf("failed to parse form data: %v", err)
+	}
+
+	phoneNumber := rqv.FormValue("phoneNumber")
+	if phoneNumber == "" {
+		return "", fmt.Errorf("no phone number found")
+	}
+
+	return phoneNumber, nil
+}
+
+func (arp *atRequestParser) GetInput(rq any) ([]byte, error) {
+	rqv, ok := rq.(*http.Request)
+	if !ok {
+		return nil, handlers.ErrInvalidRequest
+	}
+	if err := rqv.ParseForm(); err != nil {
+		return nil, fmt.Errorf("failed to parse form data: %v", err)
+	}
+
+	text := rqv.FormValue("text")
+
+	parts := strings.Split(text, "*")
+	if len(parts) == 0 {
+		return nil, fmt.Errorf("no input found")
+	}
+
+	return []byte(parts[len(parts)-1]), nil
+}
+
+func main() {
+	var dbDir string
+	var resourceDir string
+	var size uint
+	var engineDebug bool
+	var host string
+	var port uint
+	flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
+	flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
+	flag.BoolVar(&engineDebug, "d", false, "use engine debug output")
+	flag.UintVar(&size, "s", 160, "max size of output")
+	flag.StringVar(&host, "h", "127.0.0.1", "http host")
+	flag.UintVar(&port, "p", 7123, "http port")
+	flag.Parse()
+
+	logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size)
+
+	ctx := context.Background()
+	pfp := path.Join(scriptDir, "pp.csv")
+
+	cfg := engine.Config{
+		Root:       "root",
+		OutputSize: uint32(size),
+		FlagCount:  uint32(16),
+	}
+
+	if engineDebug {
+		cfg.EngineDebug = true
+	}
+
+	menuStorageService := storage.NewMenuStorageService(dbDir, resourceDir)
+	rs, err := menuStorageService.GetResource(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	err = menuStorageService.EnsureDbDir()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	userdataStore, err := menuStorageService.GetUserdataDb(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+	defer userdataStore.Close()
+
+	dbResource, ok := rs.(*resource.DbResource)
+	if !ok {
+		os.Exit(1)
+	}
+
+	lhs, err := handlers.NewLocalHandlerService(pfp, true, dbResource, cfg, rs)
+	lhs.SetDataStore(&userdataStore)
+
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	accountService := server.AccountService{}
+	hl, err := lhs.GetHandler(&accountService)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	stateStore, err := menuStorageService.GetStateStore(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+	defer stateStore.Close()
+
+	rp := &atRequestParser{}
+	bsh := handlers.NewBaseSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
+	sh := httpserver.NewATSessionHandler(bsh)
+	s := &http.Server{
+		Addr:    fmt.Sprintf("%s:%s", host, strconv.Itoa(int(port))),
+		Handler: sh,
+	}
+	s.RegisterOnShutdown(sh.Shutdown)
+
+	cint := make(chan os.Signal)
+	cterm := make(chan os.Signal)
+	signal.Notify(cint, os.Interrupt, syscall.SIGINT)
+	signal.Notify(cterm, os.Interrupt, syscall.SIGTERM)
+	go func() {
+		select {
+		case _ = <-cint:
+		case _ = <-cterm:
+		}
+		s.Shutdown(ctx)
+	}()
+	err = s.ListenAndServe()
+	if err != nil {
+		logg.Infof("Server closed with error", "err", err)
+	}
+}

cmd/async/main.go

@@ -0,0 +1,164 @@
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"os"
+	"os/signal"
+	"path"
+	"syscall"
+
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/logging"
+	"git.defalsify.org/vise.git/resource"
+
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+	"git.grassecon.net/urdt/ussd/internal/handlers/server"
+	"git.grassecon.net/urdt/ussd/internal/storage"
+)
+
+var (
+	logg      = logging.NewVanilla()
+	scriptDir = path.Join("services", "registration")
+)
+
+type asyncRequestParser struct {
+	sessionId string
+	input     []byte
+}
+
+func (p *asyncRequestParser) GetSessionId(r any) (string, error) {
+	return p.sessionId, nil
+}
+
+func (p *asyncRequestParser) GetInput(r any) ([]byte, error) {
+	return p.input, nil
+}
+
+func main() {
+	var sessionId string
+	var dbDir string
+	var resourceDir string
+	var size uint
+	var engineDebug bool
+	var host string
+	var port uint
+	flag.StringVar(&sessionId, "session-id", "075xx2123", "session id")
+	flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
+	flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
+	flag.BoolVar(&engineDebug, "d", false, "use engine debug output")
+	flag.UintVar(&size, "s", 160, "max size of output")
+	flag.StringVar(&host, "h", "127.0.0.1", "http host")
+	flag.UintVar(&port, "p", 7123, "http port")
+	flag.Parse()
+
+	logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size, "sessionId", sessionId)
+
+	ctx := context.Background()
+	pfp := path.Join(scriptDir, "pp.csv")
+
+	cfg := engine.Config{
+		Root:       "root",
+		OutputSize: uint32(size),
+		FlagCount:  uint32(16),
+	}
+
+	if engineDebug {
+		cfg.EngineDebug = true
+	}
+
+	menuStorageService := storage.NewMenuStorageService(dbDir, resourceDir)
+	rs, err := menuStorageService.GetResource(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	err = menuStorageService.EnsureDbDir()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	userdataStore, err := menuStorageService.GetUserdataDb(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+	defer userdataStore.Close()
+
+	dbResource, ok := rs.(*resource.DbResource)
+	if !ok {
+		os.Exit(1)
+	}
+
+	lhs, err := handlers.NewLocalHandlerService(pfp, true, dbResource, cfg, rs)
+	lhs.SetDataStore(&userdataStore)
+
+	accountService := server.AccountService{}
+
+	hl, err := lhs.GetHandler(&accountService)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	stateStore, err := menuStorageService.GetStateStore(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+	defer stateStore.Close()
+
+	rp := &asyncRequestParser{
+		sessionId: sessionId,
+	}
+	sh := handlers.NewBaseSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
+	cfg.SessionId = sessionId
+	rqs := handlers.RequestSession{
+		Ctx:    ctx,
+		Writer: os.Stdout,
+		Config: cfg,
+	}
+
+	cint := make(chan os.Signal)
+	cterm := make(chan os.Signal)
+	signal.Notify(cint, os.Interrupt, syscall.SIGINT)
+	signal.Notify(cterm, os.Interrupt, syscall.SIGTERM)
+	go func() {
+		select {
+		case _ = <-cint:
+		case _ = <-cterm:
+		}
+		sh.Shutdown()
+	}()
+
+	for true {
+		rqs, err = sh.Process(rqs)
+		if err != nil {
+			logg.ErrorCtxf(ctx, "error in process: %v", "err", err)
+			fmt.Errorf("error in process: %v", err)
+			os.Exit(1)
+		}
+		rqs, err = sh.Output(rqs)
+		if err != nil {
+			logg.ErrorCtxf(ctx, "error in output: %v", "err", err)
+			fmt.Errorf("error in output: %v", err)
+			os.Exit(1)
+		}
+		rqs, err = sh.Reset(rqs)
+		if err != nil {
+			logg.ErrorCtxf(ctx, "error in reset: %v", "err", err)
+			fmt.Errorf("error in reset: %v", err)
+			os.Exit(1)
+		}
+		fmt.Println("")
+		_, err = fmt.Scanln(&rqs.Input)
+		if err != nil {
+			logg.ErrorCtxf(ctx, "error in input", "err", err)
+			fmt.Errorf("error in input: %v", err)
+			os.Exit(1)
+		}
+	}
+}

cmd/http/main.go

@@ -11,159 +11,65 @@ import (
 	"strconv"
 	"syscall"
 
-	"git.defalsify.org/vise.git/asm"
-	"git.defalsify.org/vise.git/db"
-	fsdb "git.defalsify.org/vise.git/db/fs"
-	gdbmdb "git.defalsify.org/vise.git/db/gdbm"
 	"git.defalsify.org/vise.git/engine"
-	"git.defalsify.org/vise.git/resource"
 	"git.defalsify.org/vise.git/logging"
+	"git.defalsify.org/vise.git/resource"
 
-	"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+	"git.grassecon.net/urdt/ussd/internal/handlers/server"
 	httpserver "git.grassecon.net/urdt/ussd/internal/http"
+	"git.grassecon.net/urdt/ussd/internal/storage"
 )
 
 var (
-	logg = logging.NewVanilla()
+	logg      = logging.NewVanilla()
 	scriptDir = path.Join("services", "registration")
 )
 
-func getFlags(fp string, debug bool) (*asm.FlagParser, error) {
-	flagParser := asm.NewFlagParser().WithDebug()
-	_, err := flagParser.Load(fp)
-	if err != nil {
-		return nil, err
-	}
-	return flagParser, nil
-}
-
-func getHandler(appFlags *asm.FlagParser, rs *resource.DbResource, userdataStore db.Db) (*ussd.Handlers, error) {
-
-	ussdHandlers, err := ussd.NewHandlers(appFlags, userdataStore)
-	if err != nil {
-		return nil, err
-	}
-	rs.AddLocalFunc("select_language", ussdHandlers.SetLanguage)
-	rs.AddLocalFunc("create_account", ussdHandlers.CreateAccount)
-	rs.AddLocalFunc("save_pin", ussdHandlers.SavePin)
-	rs.AddLocalFunc("verify_pin", ussdHandlers.VerifyPin)
-	rs.AddLocalFunc("check_identifier", ussdHandlers.CheckIdentifier)
-	rs.AddLocalFunc("check_account_status", ussdHandlers.CheckAccountStatus)
-	rs.AddLocalFunc("authorize_account", ussdHandlers.Authorize)
-	rs.AddLocalFunc("quit", ussdHandlers.Quit)
-	rs.AddLocalFunc("check_balance", ussdHandlers.CheckBalance)
-	rs.AddLocalFunc("validate_recipient", ussdHandlers.ValidateRecipient)
-	rs.AddLocalFunc("transaction_reset", ussdHandlers.TransactionReset)
-	rs.AddLocalFunc("max_amount", ussdHandlers.MaxAmount)
-	rs.AddLocalFunc("validate_amount", ussdHandlers.ValidateAmount)
-	rs.AddLocalFunc("reset_transaction_amount", ussdHandlers.ResetTransactionAmount)
-	rs.AddLocalFunc("get_recipient", ussdHandlers.GetRecipient)
-	rs.AddLocalFunc("get_sender", ussdHandlers.GetSender)
-	rs.AddLocalFunc("get_amount", ussdHandlers.GetAmount)
-	rs.AddLocalFunc("reset_incorrect", ussdHandlers.ResetIncorrectPin)
-	rs.AddLocalFunc("save_firstname", ussdHandlers.SaveFirstname)
-	rs.AddLocalFunc("save_familyname", ussdHandlers.SaveFamilyname)
-	rs.AddLocalFunc("save_gender", ussdHandlers.SaveGender)
-	rs.AddLocalFunc("save_location", ussdHandlers.SaveLocation)
-	rs.AddLocalFunc("save_yob", ussdHandlers.SaveYob)
-	rs.AddLocalFunc("save_offerings", ussdHandlers.SaveOfferings)
-	rs.AddLocalFunc("quit_with_balance", ussdHandlers.QuitWithBalance)
-	rs.AddLocalFunc("reset_account_authorized", ussdHandlers.ResetAccountAuthorized)
-	rs.AddLocalFunc("reset_allow_update", ussdHandlers.ResetAllowUpdate)
-	rs.AddLocalFunc("get_profile_info", ussdHandlers.GetProfileInfo)
-	rs.AddLocalFunc("verify_yob", ussdHandlers.VerifyYob)
-	rs.AddLocalFunc("reset_incorrect_date_format", ussdHandlers.ResetIncorrectYob)
-	rs.AddLocalFunc("set_reset_single_edit", ussdHandlers.SetResetSingleEdit)
-	rs.AddLocalFunc("initiate_transaction", ussdHandlers.InitiateTransaction)
-
-	return ussdHandlers, nil
-}
-
-func ensureDbDir(dbDir string) error {
-	err := os.MkdirAll(dbDir, 0700)
-	if err != nil {
-		return fmt.Errorf("state dir create exited with error: %v\n", err)
-	}
-	return nil
-}
-
-func getStateStore(dbDir string, ctx context.Context) (db.Db, error) {
-	store := gdbmdb.NewGdbmDb()
-	storeFile := path.Join(dbDir, "state.gdbm")
-	store.Connect(ctx, storeFile)
-	return store, nil
-}
-
-func getUserdataDb(dbDir string, ctx context.Context) db.Db {
-	store := gdbmdb.NewGdbmDb()
-	storeFile := path.Join(dbDir, "userdata.gdbm")
-	store.Connect(ctx, storeFile)
-	
-	return store
-}
-
-func getResource(resourceDir string, ctx context.Context) (resource.Resource, error) {
-	store := fsdb.NewFsDb()
-	err := store.Connect(ctx, resourceDir)
-	if err != nil {
-		return nil, err
-	}
-	rfs := resource.NewDbResource(store)
-	return rfs, nil
-}
-
 func main() {
 	var dbDir string
 	var resourceDir string
 	var size uint
 	var engineDebug bool
-	var stateDebug bool
 	var host string
 	var port uint
 	flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
 	flag.StringVar(&resourceDir, "resourcedir", path.Join("services", "registration"), "resource dir")
-	flag.BoolVar(&engineDebug, "engine-debug", false, "use engine debug output")
+	flag.BoolVar(&engineDebug, "d", false, "use engine debug output")
-	flag.BoolVar(&stateDebug, "state-debug", false, "use engine debug output")
 	flag.UintVar(&size, "s", 160, "max size of output")
 	flag.StringVar(&host, "h", "127.0.0.1", "http host")
 	flag.UintVar(&port, "p", 7123, "http port")
 	flag.Parse()
 
-	logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir,  "outputsize", size)
+	logg.Infof("start command", "dbdir", dbDir, "resourcedir", resourceDir, "outputsize", size)
 
 	ctx := context.Background()
 	pfp := path.Join(scriptDir, "pp.csv")
-	flagParser, err := getFlags(pfp, true)
-
-	if err != nil {
-		os.Exit(1)
-	}
 
 	cfg := engine.Config{
 		Root:       "root",
 		OutputSize: uint32(size),
 		FlagCount:  uint32(16),
 	}
-	if stateDebug {
+
-		cfg.StateDebug = true
-	}
 	if engineDebug {
 		cfg.EngineDebug = true
 	}
 
-	rs, err := getResource(resourceDir, ctx)
+	menuStorageService := storage.NewMenuStorageService(dbDir, resourceDir)
+	rs, err := menuStorageService.GetResource(ctx)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
 	}
 
-	err = ensureDbDir(dbDir)
+	err = menuStorageService.EnsureDbDir()
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
 	}
 
-	userdataStore := getUserdataDb(dbDir, ctx)
+	userdataStore, err := menuStorageService.GetUserdataDb(ctx)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
@@ -175,13 +81,22 @@ func main() {
 		os.Exit(1)
 	}
 
-	hl, err := getHandler(flagParser, dbResource, userdataStore)
+	lhs, err := handlers.NewLocalHandlerService(pfp, true, dbResource, cfg, rs)
+	lhs.SetDataStore(&userdataStore)
+
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
 	}
 
-	stateStore, err := getStateStore(dbDir, ctx)
+	accountService := server.AccountService{}
+	hl, err := lhs.GetHandler(&accountService)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	stateStore, err := menuStorageService.GetStateStore(ctx)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
@@ -189,10 +104,10 @@ func main() {
 	defer stateStore.Close()
 
 	rp := &httpserver.DefaultRequestParser{}
-	//sh := httpserver.NewSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl.Init)
+	bsh := handlers.NewBaseSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
-	sh := httpserver.NewSessionHandler(cfg, rs, stateStore, userdataStore, rp, hl)
+	sh := httpserver.ToSessionHandler(bsh)
 	s := &http.Server{
-		Addr: fmt.Sprintf("%s:%s", host, strconv.Itoa(int(port))),
+		Addr:    fmt.Sprintf("%s:%s", host, strconv.Itoa(int(port))),
 		Handler: sh,
 	}
 	s.RegisterOnShutdown(sh.Shutdown)

cmd/main.go

@@ -7,15 +7,12 @@ import (
 	"os"
 	"path"
 
-	"git.defalsify.org/vise.git/asm"
-	"git.defalsify.org/vise.git/db"
-	fsdb "git.defalsify.org/vise.git/db/fs"
-	gdbmdb "git.defalsify.org/vise.git/db/gdbm"
 	"git.defalsify.org/vise.git/engine"
 	"git.defalsify.org/vise.git/logging"
-	"git.defalsify.org/vise.git/persist"
 	"git.defalsify.org/vise.git/resource"
-	"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+	"git.grassecon.net/urdt/ussd/internal/handlers/server"
+	"git.grassecon.net/urdt/ussd/internal/storage"
 )
 
 var (
@@ -23,110 +20,14 @@ var (
 	scriptDir = path.Join("services", "registration")
 )
 
-func getParser(fp string, debug bool) (*asm.FlagParser, error) {
-	flagParser := asm.NewFlagParser().WithDebug()
-	_, err := flagParser.Load(fp)
-	if err != nil {
-		return nil, err
-	}
-	return flagParser, nil
-}
-
-func getHandler(appFlags *asm.FlagParser, rs *resource.DbResource, pe *persist.Persister, userdataStore db.Db) (*ussd.Handlers, error) {
-
-	ussdHandlers, err := ussd.NewHandlers(appFlags, userdataStore)
-	if err != nil {
-		return nil, err
-	}
-	ussdHandlers = ussdHandlers.WithPersister(pe)
-	rs.AddLocalFunc("select_language", ussdHandlers.SetLanguage)
-	rs.AddLocalFunc("create_account", ussdHandlers.CreateAccount)
-	rs.AddLocalFunc("save_pin", ussdHandlers.SavePin)
-	rs.AddLocalFunc("verify_pin", ussdHandlers.VerifyPin)
-	rs.AddLocalFunc("check_identifier", ussdHandlers.CheckIdentifier)
-	rs.AddLocalFunc("check_account_status", ussdHandlers.CheckAccountStatus)
-	rs.AddLocalFunc("authorize_account", ussdHandlers.Authorize)
-	rs.AddLocalFunc("quit", ussdHandlers.Quit)
-	rs.AddLocalFunc("check_balance", ussdHandlers.CheckBalance)
-	rs.AddLocalFunc("validate_recipient", ussdHandlers.ValidateRecipient)
-	rs.AddLocalFunc("transaction_reset", ussdHandlers.TransactionReset)
-	rs.AddLocalFunc("max_amount", ussdHandlers.MaxAmount)
-	rs.AddLocalFunc("validate_amount", ussdHandlers.ValidateAmount)
-	rs.AddLocalFunc("reset_transaction_amount", ussdHandlers.ResetTransactionAmount)
-	rs.AddLocalFunc("get_recipient", ussdHandlers.GetRecipient)
-	rs.AddLocalFunc("get_sender", ussdHandlers.GetSender)
-	rs.AddLocalFunc("get_amount", ussdHandlers.GetAmount)
-	rs.AddLocalFunc("reset_incorrect", ussdHandlers.ResetIncorrectPin)
-	rs.AddLocalFunc("save_firstname", ussdHandlers.SaveFirstname)
-	rs.AddLocalFunc("save_familyname", ussdHandlers.SaveFamilyname)
-	rs.AddLocalFunc("save_gender", ussdHandlers.SaveGender)
-	rs.AddLocalFunc("save_location", ussdHandlers.SaveLocation)
-	rs.AddLocalFunc("save_yob", ussdHandlers.SaveYob)
-	rs.AddLocalFunc("save_offerings", ussdHandlers.SaveOfferings)
-	rs.AddLocalFunc("quit_with_balance", ussdHandlers.QuitWithBalance)
-	rs.AddLocalFunc("reset_account_authorized", ussdHandlers.ResetAccountAuthorized)
-	rs.AddLocalFunc("reset_allow_update", ussdHandlers.ResetAllowUpdate)
-	rs.AddLocalFunc("get_profile_info", ussdHandlers.GetProfileInfo)
-	rs.AddLocalFunc("verify_yob", ussdHandlers.VerifyYob)
-	rs.AddLocalFunc("reset_incorrect_date_format", ussdHandlers.ResetIncorrectYob)
-	rs.AddLocalFunc("set_reset_single_edit", ussdHandlers.SetResetSingleEdit)
-	rs.AddLocalFunc("initiate_transaction", ussdHandlers.InitiateTransaction)
-
-	return ussdHandlers, nil
-}
-
-func ensureDbDir(dbDir string) error {
-	err := os.MkdirAll(dbDir, 0700)
-	if err != nil {
-		return fmt.Errorf("state dir create exited with error: %v\n", err)
-	}
-	return nil
-}
-
-func getPersister(dbDir string, ctx context.Context) (*persist.Persister, error) {
-	err := ensureDbDir(dbDir)
-	if err != nil {
-		return nil, err
-	}
-	store := gdbmdb.NewGdbmDb()
-	storeFile := path.Join(dbDir, "state.gdbm")
-	store.Connect(ctx, storeFile)
-	pr := persist.NewPersister(store)
-	return pr, nil
-}
-
-func getUserdataDb(dbDir string, ctx context.Context) db.Db {
-	store := gdbmdb.NewGdbmDb()
-	storeFile := path.Join(dbDir, "userdata.gdbm")
-	store.Connect(ctx, storeFile)
-
-	return store
-}
-
-func getResource(resourceDir string, ctx context.Context) (resource.Resource, error) {
-	store := fsdb.NewFsDb()
-	err := store.Connect(ctx, resourceDir)
-	if err != nil {
-		return nil, err
-	}
-	rfs := resource.NewDbResource(store)
-	return rfs, nil
-}
-
-func getEngine(cfg engine.Config, rs resource.Resource, pr *persist.Persister) *engine.DefaultEngine {
-	en := engine.NewEngine(cfg, rs)
-	en = en.WithPersister(pr)
-	return en
-}
-
 func main() {
 	var dbDir string
 	var size uint
 	var sessionId string
-	var debug bool
+	var engineDebug bool
 	flag.StringVar(&sessionId, "session-id", "075xx2123", "session id")
 	flag.StringVar(&dbDir, "dbdir", ".state", "database dir to read from")
-	flag.BoolVar(&debug, "d", false, "use engine debug output")
+	flag.BoolVar(&engineDebug, "d", false, "use engine debug output")
 	flag.UintVar(&size, "s", 160, "max size of output")
 	flag.Parse()
 
@@ -135,11 +36,6 @@ func main() {
 	ctx := context.Background()
 	ctx = context.WithValue(ctx, "SessionId", sessionId)
 	pfp := path.Join(scriptDir, "pp.csv")
-	flagParser, err := getParser(pfp, true)
-
-	if err != nil {
-		os.Exit(1)
-	}
 
 	cfg := engine.Config{
 		Root:       "root",
@@ -148,19 +44,28 @@ func main() {
 		FlagCount:  uint32(16),
 	}
 
-	rs, err := getResource(scriptDir, ctx)
+	resourceDir := scriptDir
+	menuStorageService := storage.NewMenuStorageService(dbDir, resourceDir)
+
+	err := menuStorageService.EnsureDbDir()
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
 	}
 
-	pe, err := getPersister(dbDir, ctx)
+	rs, err := menuStorageService.GetResource(ctx)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
 	}
 
-	store := getUserdataDb(dbDir, ctx)
+	pe, err := menuStorageService.GetPersister(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	userdatastore, err := menuStorageService.GetUserdataDb(ctx)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
@@ -172,25 +77,28 @@ func main() {
 		os.Exit(1)
 	}
 
-	hl, err := getHandler(flagParser, dbResource, pe, store)
+	lhs, err := handlers.NewLocalHandlerService(pfp, true, dbResource, cfg, rs)
+	lhs.SetDataStore(&userdatastore)
+	lhs.SetPersister(pe)
+
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+	accountService := server.AccountService{}
+	hl, err := lhs.GetHandler(&accountService)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, err.Error())
 		os.Exit(1)
 	}
 
-	en := getEngine(cfg, rs, pe)
+	en := lhs.GetEngine()
 	en = en.WithFirst(hl.Init)
-	if debug {
+	if engineDebug {
 		en = en.WithDebug(nil)
 	}
 
-	_, err = en.Init(ctx)
+	err = engine.Loop(ctx, en, os.Stdin, os.Stdout, nil)
-	if err != nil {
-		fmt.Fprintf(os.Stderr, "engine init exited with error: %v\n", err)
-		os.Exit(1)
-	}
-
-	err = engine.Loop(ctx, en, os.Stdin, os.Stdout)
 	if err != nil {
 		fmt.Fprintf(os.Stderr, "loop exited with error: %v\n", err)
 		os.Exit(1)

driver/testdriver.go

@@ -0,0 +1,111 @@
+package driver
+
+import (
+	"encoding/json"
+	"log"
+	"os"
+	"regexp"
+)
+
+type Step struct {
+	Input           string `json:"input"`
+	ExpectedContent string `json:"expectedContent"`
+}
+
+func (s *Step) MatchesExpectedContent(content []byte) (bool, error) {
+	pattern := `.*\?.*|.*`
+	re, err := regexp.Compile(pattern)
+	if err != nil {
+		return false, err
+	}
+	// Check if the content matches the regex pattern
+	if re.Match(content) {
+		return true, nil
+	}
+	return false, nil
+}
+
+// Group represents a group of steps
+type Group struct {
+	Name  string `json:"name"`
+	Steps []Step `json:"steps"`
+}
+
+type TestCase struct {
+	Name            string
+	Input           string
+	ExpectedContent string
+}
+
+func (s *TestCase) MatchesExpectedContent(content []byte) (bool, error) {
+	re, err := regexp.Compile(s.ExpectedContent)
+	if err != nil {
+		return false, err
+	}
+	// Check if the content matches the regex pattern
+	if re.Match(content) {
+		return true, nil
+	}
+	return false, nil
+}
+
+// DataGroup represents the overall structure of the JSON.
+type DataGroup struct {
+	Groups []Group `json:"groups"`
+}
+
+type Session struct {
+	Name   string  `json:"name"`
+	Groups []Group `json:"groups"`
+}
+
+func ReadData() []Session {
+	data, err := os.ReadFile("test_setup.json")
+	if err != nil {
+		log.Fatalf("Failed to read file: %v", err)
+	}
+	// Unmarshal JSON data
+	var sessions []Session
+	err = json.Unmarshal(data, &sessions)
+	if err != nil {
+		log.Fatalf("Failed to unmarshal JSON: %v", err)
+	}
+
+	return sessions
+}
+
+func FilterGroupsByName(groups []Group, name string) []Group {
+	var filteredGroups []Group
+	for _, group := range groups {
+		if group.Name == name {
+			filteredGroups = append(filteredGroups, group)
+		}
+	}
+	return filteredGroups
+}
+
+func LoadTestGroups(filePath string) (DataGroup, error) {
+	var sessionsData DataGroup
+	data, err := os.ReadFile(filePath)
+	if err != nil {
+		return sessionsData, err
+	}
+	err = json.Unmarshal(data, &sessionsData)
+	return sessionsData, err
+}
+
+func CreateTestCases(group DataGroup) []TestCase {
+	var tests []TestCase
+	for _, group := range group.Groups {
+		for _, step := range group.Steps {
+			// Create a test case for each group
+			tests = append(tests, TestCase{
+				Name:            group.Name,
+				Input:           step.Input,
+				ExpectedContent: step.ExpectedContent,
+			})
+		}
+	}
+
+	return tests
+}

go.mod

@@ -3,8 +3,9 @@ module git.grassecon.net/urdt/ussd
 go 1.22.6
 
 require (
-	git.defalsify.org/vise.git v0.1.0-rc.3.0.20240911162138-1f2af8672dc7
+	git.defalsify.org/vise.git v0.1.0-rc.3.0.20240923162317-c20d557a3dbb
 	github.com/alecthomas/assert/v2 v2.2.2
+	github.com/peteole/testdata-loader v0.3.0
 	gopkg.in/leonelquinteros/gotext.v1 v1.3.1
 )
 
@@ -14,6 +15,7 @@ require (
 	github.com/barbashov/iso639-3 v0.0.0-20211020172741-1f4ffb2d8d1c // indirect
 	github.com/davecgh/go-spew v1.1.1 // 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

go.sum

@@ -1,5 +1,5 @@
-git.defalsify.org/vise.git v0.1.0-rc.3.0.20240911162138-1f2af8672dc7 h1:embPZDx0Sgpq6jp9vcZ1GVI0eum3PsPCmAfxAa/1KLI=
+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.3.0.20240911162138-1f2af8672dc7/go.mod h1:JDguWmcoWBdsnpw7PUjVZAEpdC/ubBmjdUBy3tjP63M=
+git.defalsify.org/vise.git v0.1.0-rc.3.0.20240923162317-c20d557a3dbb/go.mod h1:JDguWmcoWBdsnpw7PUjVZAEpdC/ubBmjdUBy3tjP63M=
 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=
@@ -12,6 +12,8 @@ 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/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/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/base.go

@@ -0,0 +1,105 @@
+package handlers
+
+import (
+	"git.defalsify.org/vise.git/db"
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/persist"
+	"git.defalsify.org/vise.git/resource"
+
+	"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
+	"git.grassecon.net/urdt/ussd/internal/storage"
+)
+
+type BaseSessionHandler struct {
+	cfgTemplate engine.Config
+	rp RequestParser
+	rs resource.Resource
+	hn *ussd.Handlers
+	provider storage.StorageProvider
+}
+
+func NewBaseSessionHandler(cfg engine.Config, rs resource.Resource, stateDb db.Db, userdataDb db.Db, rp RequestParser, hn *ussd.Handlers) *BaseSessionHandler {
+	return &BaseSessionHandler{
+		cfgTemplate: cfg,
+		rs: rs,
+		hn: hn,
+		rp: rp,
+		provider: storage.NewSimpleStorageProvider(stateDb, userdataDb),
+	}
+}
+
+func(f* BaseSessionHandler) Shutdown() {
+	err := f.provider.Close()
+	if err != nil {
+		logg.Errorf("handler shutdown error", "err", err)
+	}
+}
+
+func(f *BaseSessionHandler) GetEngine(cfg engine.Config, rs resource.Resource, pr *persist.Persister) engine.Engine {
+	en := engine.NewEngine(cfg, rs)
+	en = en.WithPersister(pr)
+	return en
+}
+
+func(f *BaseSessionHandler) Process(rqs RequestSession) (RequestSession, error) {
+	var r bool
+	var err error
+	var ok bool
+	
+	logg.InfoCtxf(rqs.Ctx, "new request", "data", rqs)
+
+	rqs.Storage, err = f.provider.Get(rqs.Config.SessionId)
+	if err != nil {
+		logg.ErrorCtxf(rqs.Ctx, "", "storage get error", err)
+		return rqs, ErrStorage
+	}
+
+	f.hn = f.hn.WithPersister(rqs.Storage.Persister)
+	eni := f.GetEngine(rqs.Config, f.rs, rqs.Storage.Persister)
+	en, ok := eni.(*engine.DefaultEngine)
+	if !ok {
+		perr := f.provider.Put(rqs.Config.SessionId, rqs.Storage)
+		rqs.Storage = nil
+		if perr != nil {
+			logg.ErrorCtxf(rqs.Ctx, "", "storage put error", perr)
+		}
+		return rqs, ErrEngineType
+	}
+	en = en.WithFirst(f.hn.Init)
+	if rqs.Config.EngineDebug {
+		en = en.WithDebug(nil)
+	}
+	rqs.Engine = en
+
+	r, err = rqs.Engine.Exec(rqs.Ctx, rqs.Input)
+	if err != nil {
+		perr := f.provider.Put(rqs.Config.SessionId, rqs.Storage)
+		rqs.Storage = nil
+		if perr != nil {
+			logg.ErrorCtxf(rqs.Ctx, "", "storage put error", perr)
+		}
+		return rqs, err
+	}
+
+	rqs.Continue = r 
+	return rqs, nil
+}
+
+func(f *BaseSessionHandler) Output(rqs RequestSession) (RequestSession,  error) {
+	var err error
+	_, err = rqs.Engine.Flush(rqs.Ctx, rqs.Writer)
+	return rqs, err
+}
+
+func(f *BaseSessionHandler) Reset(rqs RequestSession) (RequestSession, error) {
+	defer f.provider.Put(rqs.Config.SessionId, rqs.Storage)
+	return rqs, rqs.Engine.Finish()
+}
+
+func(f *BaseSessionHandler) GetConfig() engine.Config {
+	return f.cfgTemplate
+}
+
+func(f *BaseSessionHandler) GetRequestParser() RequestParser {
+	return f.rp
+}

internal/handlers/handlerservice.go

@@ -0,0 +1,106 @@
+package handlers
+
+import (
+	"git.defalsify.org/vise.git/asm"
+	"git.defalsify.org/vise.git/db"
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/persist"
+	"git.defalsify.org/vise.git/resource"
+	"git.grassecon.net/urdt/ussd/internal/handlers/server"
+	"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
+)
+
+type HandlerService interface {
+	GetHandler() (*ussd.Handlers, error)
+}
+
+func getParser(fp string, debug bool) (*asm.FlagParser, error) {
+	flagParser := asm.NewFlagParser().WithDebug()
+	_, err := flagParser.Load(fp)
+	if err != nil {
+		return nil, err
+	}
+	return flagParser, nil
+}
+
+type LocalHandlerService struct {
+	Parser        *asm.FlagParser
+	DbRs          *resource.DbResource
+	Pe            *persist.Persister
+	UserdataStore *db.Db
+	Cfg           engine.Config
+	Rs            resource.Resource
+}
+
+func NewLocalHandlerService(fp string, debug bool, dbResource *resource.DbResource, cfg engine.Config, rs resource.Resource) (*LocalHandlerService, error) {
+	parser, err := getParser(fp, debug)
+	if err != nil {
+		return nil, err
+	}
+	return &LocalHandlerService{
+		Parser: parser,
+		DbRs:   dbResource,
+		Cfg:    cfg,
+		Rs:     rs,
+	}, nil
+}
+
+func (ls *LocalHandlerService) SetPersister(Pe *persist.Persister) {
+	ls.Pe = Pe
+}
+
+func (ls *LocalHandlerService) SetDataStore(db *db.Db) {
+	ls.UserdataStore = db
+}
+
+func (ls *LocalHandlerService) GetHandler(accountService server.AccountServiceInterface) (*ussd.Handlers, error) {
+	ussdHandlers, err := ussd.NewHandlers(ls.Parser, *ls.UserdataStore, accountService)
+	if err != nil {
+		return nil, err
+	}
+	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("check_identifier", ussdHandlers.CheckIdentifier)
+	ls.DbRs.AddLocalFunc("check_account_status", ussdHandlers.CheckAccountStatus)
+	ls.DbRs.AddLocalFunc("authorize_account", ussdHandlers.Authorize)
+	ls.DbRs.AddLocalFunc("quit", ussdHandlers.Quit)
+	ls.DbRs.AddLocalFunc("check_balance", ussdHandlers.CheckBalance)
+	ls.DbRs.AddLocalFunc("validate_recipient", ussdHandlers.ValidateRecipient)
+	ls.DbRs.AddLocalFunc("transaction_reset", ussdHandlers.TransactionReset)
+	ls.DbRs.AddLocalFunc("max_amount", ussdHandlers.MaxAmount)
+	ls.DbRs.AddLocalFunc("validate_amount", ussdHandlers.ValidateAmount)
+	ls.DbRs.AddLocalFunc("reset_transaction_amount", ussdHandlers.ResetTransactionAmount)
+	ls.DbRs.AddLocalFunc("get_recipient", ussdHandlers.GetRecipient)
+	ls.DbRs.AddLocalFunc("get_sender", ussdHandlers.GetSender)
+	ls.DbRs.AddLocalFunc("get_amount", ussdHandlers.GetAmount)
+	ls.DbRs.AddLocalFunc("reset_incorrect", ussdHandlers.ResetIncorrectPin)
+	ls.DbRs.AddLocalFunc("save_firstname", ussdHandlers.SaveFirstname)
+	ls.DbRs.AddLocalFunc("save_familyname", ussdHandlers.SaveFamilyname)
+	ls.DbRs.AddLocalFunc("save_gender", ussdHandlers.SaveGender)
+	ls.DbRs.AddLocalFunc("save_location", ussdHandlers.SaveLocation)
+	ls.DbRs.AddLocalFunc("save_yob", ussdHandlers.SaveYob)
+	ls.DbRs.AddLocalFunc("save_offerings", ussdHandlers.SaveOfferings)
+	ls.DbRs.AddLocalFunc("quit_with_balance", ussdHandlers.QuitWithBalance)
+	ls.DbRs.AddLocalFunc("reset_account_authorized", ussdHandlers.ResetAccountAuthorized)
+	ls.DbRs.AddLocalFunc("reset_allow_update", ussdHandlers.ResetAllowUpdate)
+	ls.DbRs.AddLocalFunc("get_profile_info", ussdHandlers.GetProfileInfo)
+	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)
+
+	return ussdHandlers, nil
+}
+
+// TODO: enable setting of sessionId on engine init time
+func (ls *LocalHandlerService) GetEngine() *engine.DefaultEngine {
+	en := engine.NewEngine(ls.Cfg, ls.Rs)
+	en = en.WithPersister(ls.Pe)
+	return en
+}

internal/handlers/server/accountservice.go

@@ -18,7 +18,8 @@ type AccountServiceInterface interface {
 type AccountService struct {
 }
 
-
+type MockAccountService struct {
+}
 
 // CheckAccountStatus retrieves the status of an account transaction based on the provided tracking ID.
 //
@@ -27,12 +28,10 @@ type AccountService struct {
 //     CreateAccount or a similar function that returns an AccountResponse. The `trackingId` field in the
 //     AccountResponse struct can be used here to check the account status during a transaction.
 //
-//
 // 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) (string, error) {
 	resp, err := http.Get(config.TrackStatusURL + trackingId)
 	if err != nil {
@@ -56,7 +55,6 @@ func (as *AccountService) CheckAccountStatus(trackingId string) (string, error)
 	return status, 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.
@@ -83,8 +81,7 @@ func (as *AccountService) CheckBalance(publicKey string) (string, error) {
 	return balance, nil
 }
 
-
+// CreateAccount creates a new account in the custodial system.
-//CreateAccount creates a new account in the custodial system.
 // Returns:
 //   - *models.AccountResponse: A pointer to an AccountResponse struct containing the details of the created account.
 //     If there is an error during the request or processing, this will be nil.
@@ -110,3 +107,38 @@ func (as *AccountService) CreateAccount() (*models.AccountResponse, error) {
 
 	return &accountResp, nil
 }
+
+func (mas *MockAccountService) 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 (mas *MockAccountService) CheckBalance(publicKey string) (string, 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.Result.Balance, nil
+}
+
+func (mas *MockAccountService) CheckAccountStatus(trackingId string) (string, error) {
+	return "SUCCESS", nil
+}

internal/handlers/single.go

@@ -0,0 +1,54 @@
+package handlers
+
+import (
+	"context"
+	"errors"
+	"io"
+
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/resource"
+	"git.defalsify.org/vise.git/persist"
+	"git.defalsify.org/vise.git/logging"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
+)
+
+var (
+	logg = logging.NewVanilla().WithDomain("handlers")
+)
+
+var (
+	ErrInvalidRequest = errors.New("invalid request for context")
+	ErrSessionMissing = errors.New("missing session")
+	ErrInvalidInput = errors.New("invalid input")
+	ErrStorage = errors.New("storage retrieval fail")
+	ErrEngineType = errors.New("incompatible engine")
+	ErrEngineInit = errors.New("engine init fail")
+	ErrEngineExec = errors.New("engine exec fail")
+)
+
+type RequestSession struct {
+	Ctx context.Context
+	Config engine.Config
+	Engine engine.Engine
+	Input []byte
+	Storage *storage.Storage
+	Writer io.Writer
+	Continue bool
+}
+
+// TODO: seems like can remove this.
+type RequestParser interface {
+	GetSessionId(rq any) (string, error)
+	GetInput(rq any) ([]byte, error)
+}
+
+type RequestHandler interface {
+	GetConfig() engine.Config
+	GetRequestParser() RequestParser
+	GetEngine(cfg engine.Config, rs resource.Resource, pe *persist.Persister) engine.Engine 
+	Process(rs RequestSession) (RequestSession, error)
+	Output(rs RequestSession) (RequestSession, error)
+	Reset(rs RequestSession) (RequestSession, error)
+	Shutdown()
+}

internal/handlers/ussd/menuhandler.go

@@ -29,11 +29,6 @@ var (
 	translationDir = path.Join(scriptDir, "locale")
 )
 
-type FSData struct {
-	Path string
-	St   *state.State
-}
-
 // FlagManager handles centralized flag management
 type FlagManager struct {
 	parser *asm.FlagParser
@@ -66,7 +61,7 @@ type Handlers struct {
 	accountService server.AccountServiceInterface
 }
 
-func NewHandlers(appFlags *asm.FlagParser, userdataStore db.Db) (*Handlers, error) {
+func NewHandlers(appFlags *asm.FlagParser, userdataStore db.Db, accountService server.AccountServiceInterface) (*Handlers, error) {
 	if userdataStore == nil {
 		return nil, fmt.Errorf("cannot create handler with nil userdata store")
 	}
@@ -74,9 +69,9 @@ func NewHandlers(appFlags *asm.FlagParser, userdataStore db.Db) (*Handlers, erro
 		Db: userdataStore,
 	}
 	h := &Handlers{
-		userdataStore:      userDb,
+		userdataStore:  userDb,
-		flagManager:        appFlags,
+		flagManager:    appFlags,
-		accountService:     &server.AccountService{},
+		accountService: accountService,
 	}
 	return h, nil
 }
@@ -121,18 +116,15 @@ func (h *Handlers) Init(ctx context.Context, sym string, input []byte) (resource
 // SetLanguage sets the language across the menu
 func (h *Handlers) SetLanguage(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
-	var err error
 
-	inputStr := string(input)
+	symbol, _ := h.st.Where()
-	switch inputStr {
+	code := strings.Split(symbol, "_")[1]
-	case "0":
+
-		res.FlagSet = []uint32{state.FLAG_LANG}
+	if !utils.IsValidISO639(code) {
-		res.Content = "eng"
+		return res, nil
-	case "1":
-		res.FlagSet = []uint32{state.FLAG_LANG}
-		res.Content = "swa"
-	default:
 	}
+	res.FlagSet = append(res.FlagSet, state.FLAG_LANG)
+	res.Content = code
 
 	languageSetFlag, err := h.flagManager.GetFlag("flag_language_set")
 	if err != nil {
@@ -216,32 +208,74 @@ func (h *Handlers) SavePin(ctx context.Context, sym string, input []byte) (resou
 	return res, nil
 }
 
-// SetResetSingleEdit sets and resets  flags to allow gradual editing of profile information.
+func (h *Handlers) VerifyNewPin(ctx context.Context, sym string, input []byte) (resource.Result, error) {
-func (h *Handlers) SetResetSingleEdit(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	res := resource.Result{}
-	var res resource.Result
+	_, ok := ctx.Value("SessionId").(string)
-
+	if !ok {
-	menuOption := string(input)
+		return res, fmt.Errorf("missing session")
-
+	}
-	flag_allow_update, _ := h.flagManager.GetFlag("flag_allow_update")
+	flag_valid_pin, _ := h.flagManager.GetFlag("flag_valid_pin")
-	flag_single_edit, _ := h.flagManager.GetFlag("flag_single_edit")
+	pinInput := string(input)
-
+	// Validate that the PIN is a 4-digit number
-	switch menuOption {
+	if isValidPIN(pinInput) {
-	case "2":
+		res.FlagSet = append(res.FlagSet, flag_valid_pin)
-		res.FlagReset = append(res.FlagReset, flag_allow_update)
+	} else {
-		res.FlagSet = append(res.FlagSet, flag_single_edit)
+		res.FlagReset = append(res.FlagReset, flag_valid_pin)
-	case "3":
-		res.FlagReset = append(res.FlagReset, flag_allow_update)
-		res.FlagSet = append(res.FlagSet, flag_single_edit)
-	case "4":
-		res.FlagReset = append(res.FlagReset, flag_allow_update)
-		res.FlagSet = append(res.FlagSet, flag_single_edit)
-	default:
-		res.FlagReset = append(res.FlagReset, flag_single_edit)
 	}
 
 	return res, nil
 }
 
+func (h *Handlers) SaveTemporaryPin(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
+	}
+	store := h.userdataStore
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_TEMPORARY_PIN, []byte(accountPIN))
+	if err != nil {
+		return res, err
+	}
+	return res, nil
+}
+
+func (h *Handlers) ConfirmPinChange(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_pin_mismatch, _ := h.flagManager.GetFlag("flag_pin_mismatch")
+
+	store := h.userdataStore
+	temporaryPin, err := store.ReadEntry(ctx, sessionId, utils.DATA_TEMPORARY_PIN)
+	if err != nil {
+		return res, err
+	}
+	if bytes.Equal(temporaryPin, input) {
+		res.FlagReset = append(res.FlagReset, flag_pin_mismatch)
+	} else {
+		res.FlagSet = append(res.FlagSet, flag_pin_mismatch)
+	}
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_ACCOUNT_PIN, []byte(temporaryPin))
+	if err != nil {
+		return res, err
+	}
+	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
 // to access the main menu
@@ -293,7 +327,6 @@ 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
@@ -322,9 +355,6 @@ func (h *Handlers) SaveFamilyname(ctx context.Context, sym string, input []byte)
 		if err != nil {
 			return res, err
 		}
-		if err != nil {
-			return res, nil
-		}
 	} else {
 		return res, fmt.Errorf("a family name cannot be less than one character")
 	}
@@ -376,6 +406,7 @@ func (h *Handlers) SaveLocation(ctx context.Context, sym string, input []byte) (
 
 // SaveGender updates the gender in the gdbm with the provided input.
 func (h *Handlers) SaveGender(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	symbol, _ := h.st.Where()
 	var res resource.Result
 	var err error
 	sessionId, ok := ctx.Value("SessionId").(string)
@@ -383,21 +414,11 @@ func (h *Handlers) SaveGender(ctx context.Context, sym string, input []byte) (re
 		return res, fmt.Errorf("missing session")
 	}
 
-	if len(input) > 0 {
+	gender := strings.Split(symbol, "_")[1]
-		gender := string(input)
+	store := h.userdataStore
-		switch gender {
+	err = store.WriteEntry(ctx, sessionId, utils.DATA_GENDER, []byte(gender))
-		case "1":
+	if err != nil {
-			gender = "Male"
+		return res, nil
-		case "2":
-			gender = "Female"
-		case "3":
-			gender = "Unspecified"
-		}
-		store := h.userdataStore
-		err = store.WriteEntry(ctx, sessionId, utils.DATA_GENDER, []byte(gender))
-		if err != nil {
-			return res, nil
-		}
 	}
 
 	return res, nil
@@ -481,27 +502,23 @@ func (h *Handlers) Authorize(ctx context.Context, sym string, input []byte) (res
 	if err != nil {
 		return res, err
 	}
-
+	if len(input) > 1 {
-	if err == nil {
+		if bytes.Equal(input, AccountPin) {
-		if len(input) == 4 {
+			if h.st.MatchFlag(flag_account_authorized, false) {
-			if bytes.Equal(input, AccountPin) {
+				res.FlagReset = append(res.FlagReset, flag_incorrect_pin)
-				if h.st.MatchFlag(flag_account_authorized, false) {
+				res.FlagSet = append(res.FlagSet, flag_allow_update, flag_account_authorized)
-					res.FlagReset = append(res.FlagReset, flag_incorrect_pin)
-					res.FlagSet = append(res.FlagSet, flag_allow_update, flag_account_authorized)
-				} else {
-					res.FlagSet = append(res.FlagSet, flag_allow_update)
-					res.FlagReset = append(res.FlagReset, flag_account_authorized)
-				}
 			} else {
-				res.FlagSet = append(res.FlagSet, flag_incorrect_pin)
+				res.FlagSet = append(res.FlagSet, flag_allow_update)
 				res.FlagReset = append(res.FlagReset, flag_account_authorized)
-				return res, nil
 			}
+		} else {
+			res.FlagSet = append(res.FlagSet, flag_incorrect_pin)
+			res.FlagReset = append(res.FlagReset, flag_account_authorized)
+			return res, nil
 		}
 	} else {
 		return res, nil
 	}
-
 	return res, nil
 }
 
@@ -569,6 +586,21 @@ func (h *Handlers) Quit(ctx context.Context, sym string, input []byte) (resource
 	return res, nil
 }
 
+// QuitWithHelp displays helpline information then exits the menu
+func (h *Handlers) QuitWithHelp(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+
+	flag_account_authorized, _ := h.flagManager.GetFlag("flag_account_authorized")
+
+	code := codeFromCtx(ctx)
+	l := gotext.NewLocale(translationDir, code)
+	l.AddDomain("default")
+
+	res.Content = l.Get("For more help,please call: 0757628885")
+	res.FlagReset = append(res.FlagReset, flag_account_authorized)
+	return res, nil
+}
+
 // VerifyYob verifies the length of the given input
 func (h *Handlers) VerifyYob(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
@@ -748,7 +780,8 @@ func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte)
 
 	flag_invalid_amount, _ := h.flagManager.GetFlag("flag_invalid_amount")
 
-	publicKey, _ := utils.ReadEntry(ctx, h.userdataStore, sessionId, utils.DATA_PUBLIC_KEY)
+	store := h.userdataStore
+	publicKey, _ := store.ReadEntry(ctx, sessionId, utils.DATA_PUBLIC_KEY)
 
 	amountStr := string(input)
 
@@ -792,7 +825,6 @@ func (h *Handlers) ValidateAmount(ctx context.Context, sym string, input []byte)
 	}
 
 	res.Content = fmt.Sprintf("%.3f", inputAmount) // Format to 3 decimal places
-	store := h.userdataStore
 	err = store.WriteEntry(ctx, sessionId, utils.DATA_AMOUNT, []byte(amountStr))
 	if err != nil {
 		return res, err

internal/http/at_session_handler.go

@@ -0,0 +1,92 @@
+package http
+
+import (
+	"io"
+	"net/http"
+
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+)
+
+type ATSessionHandler struct {
+	*SessionHandler
+}
+
+func NewATSessionHandler(h handlers.RequestHandler) *ATSessionHandler {
+	return &ATSessionHandler{
+		SessionHandler: ToSessionHandler(h),
+	}
+}
+
+func (ash *ATSessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
+	var code int
+	var err error
+
+	rqs := handlers.RequestSession{
+		Ctx:    req.Context(),
+		Writer: w,
+	}
+
+	rp := ash.GetRequestParser()
+	cfg := ash.GetConfig()
+	cfg.SessionId, err = rp.GetSessionId(req)
+	if err != nil {
+		logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
+		ash.writeError(w, 400, err)
+		return
+	}
+	rqs.Config = cfg
+	rqs.Input, err = rp.GetInput(req)
+	if err != nil {
+		logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
+		ash.writeError(w, 400, err)
+		return
+	}
+
+	rqs, err = ash.Process(rqs) 
+	switch err {
+	case nil: // set code to 200 if no err
+		code = 200
+	case handlers.ErrStorage, handlers.ErrEngineInit, handlers.ErrEngineExec, handlers.ErrEngineType:
+		code = 500
+	default:
+		code = 500
+	}
+
+	if code != 200 {
+		ash.writeError(w, 500, err)
+		return
+	}
+
+	w.WriteHeader(200)
+	w.Header().Set("Content-Type", "text/plain")
+	rqs, err = ash.Output(rqs)
+	if err != nil {
+		ash.writeError(w, 500, err)
+		return
+	}
+
+	rqs, err = ash.Reset(rqs)
+	if err != nil {
+		ash.writeError(w, 500, err)
+		return
+	}
+}
+
+func (ash *ATSessionHandler) Output(rqs handlers.RequestSession) (handlers.RequestSession, error) {
+	var err error
+	var prefix string
+
+	if rqs.Continue {
+		prefix = "CON "
+	} else {
+		prefix = "END "
+	}
+
+	_, err = io.WriteString(rqs.Writer, prefix)
+	if err != nil {
+		return rqs, err
+	}
+
+	_, err = rqs.Engine.Flush(rqs.Ctx, rqs.Writer)
+	return rqs, err
+}

internal/http/http_test.go

@@ -0,0 +1,449 @@
+package http
+
+import (
+	"bytes"
+	"context"
+	"errors"
+	"io"
+	"net/http"
+	"net/http/httptest"
+	"net/url"
+	"strings"
+	"testing"
+
+	"git.defalsify.org/vise.git/engine"
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+	"git.grassecon.net/urdt/ussd/internal/mocks/httpmocks"
+)
+
+// invalidRequestType is a custom type to test invalid request scenarios
+type invalidRequestType struct{}
+
+// errorReader is a helper type that always returns an error when Read is called
+type errorReader struct{}
+
+func (e *errorReader) Read(p []byte) (n int, err error) {
+	return 0, errors.New("read error")
+}
+
+func TestNewATSessionHandler(t *testing.T) {
+	mockHandler := &httpmocks.MockRequestHandler{}
+	ash := NewATSessionHandler(mockHandler)
+
+	if ash == nil {
+		t.Fatal("NewATSessionHandler returned nil")
+	}
+
+	if ash.SessionHandler == nil {
+		t.Fatal("SessionHandler is nil")
+	}
+}
+
+func TestATSessionHandler_ServeHTTP(t *testing.T) {
+	tests := []struct {
+		name           string
+		setupMocks     func(*httpmocks.MockRequestHandler, *httpmocks.MockRequestParser, *httpmocks.MockEngine)
+		formData       url.Values
+		expectedStatus int
+		expectedBody   string
+	}{
+		{
+			name: "Successful request",
+			setupMocks: func(mh *httpmocks.MockRequestHandler, mrp *httpmocks.MockRequestParser, me *httpmocks.MockEngine) {
+				mrp.GetSessionIdFunc = func(rq any) (string, error) {
+					req := rq.(*http.Request)
+					return req.FormValue("phoneNumber"), nil
+				}
+				mrp.GetInputFunc = func(rq any) ([]byte, error) {
+					req := rq.(*http.Request)
+					text := req.FormValue("text")
+					parts := strings.Split(text, "*")
+					return []byte(parts[len(parts)-1]), nil
+				}
+				mh.ProcessFunc = func(rqs handlers.RequestSession) (handlers.RequestSession, error) {
+					rqs.Continue = true
+					rqs.Engine = me
+					return rqs, nil
+				}
+				mh.GetConfigFunc = func() engine.Config { return engine.Config{} }
+				mh.GetRequestParserFunc = func() handlers.RequestParser { return mrp }
+				mh.OutputFunc = func(rs handlers.RequestSession) (handlers.RequestSession, error) { return rs, nil }
+				mh.ResetFunc = func(rs handlers.RequestSession) (handlers.RequestSession, error) { return rs, nil }
+				me.FlushFunc = func(context.Context, io.Writer) (int, error) { return 0, nil }
+			},
+			formData: url.Values{
+				"phoneNumber": []string{"+1234567890"},
+				"text":        []string{"1*2*3"},
+			},
+			expectedStatus: http.StatusOK,
+			expectedBody:   "CON ",
+		},
+		{
+			name: "GetSessionId error",
+			setupMocks: func(mh *httpmocks.MockRequestHandler, mrp *httpmocks.MockRequestParser, me *httpmocks.MockEngine) {
+				mrp.GetSessionIdFunc = func(rq any) (string, error) {
+					return "", errors.New("no phone number found")
+				}
+				mh.GetConfigFunc = func() engine.Config { return engine.Config{} }
+				mh.GetRequestParserFunc = func() handlers.RequestParser { return mrp }
+			},
+			formData: url.Values{
+				"text": []string{"1*2*3"},
+			},
+			expectedStatus: http.StatusBadRequest,
+			expectedBody:   "",
+		},
+		{
+			name: "GetInput error",
+			setupMocks: func(mh *httpmocks.MockRequestHandler, mrp *httpmocks.MockRequestParser, me *httpmocks.MockEngine) {
+				mrp.GetSessionIdFunc = func(rq any) (string, error) {
+					req := rq.(*http.Request)
+					return req.FormValue("phoneNumber"), nil
+				}
+				mrp.GetInputFunc = func(rq any) ([]byte, error) {
+					return nil, errors.New("no input found")
+				}
+				mh.GetConfigFunc = func() engine.Config { return engine.Config{} }
+				mh.GetRequestParserFunc = func() handlers.RequestParser { return mrp }
+			},
+			formData: url.Values{
+				"phoneNumber": []string{"+1234567890"},
+			},
+			expectedStatus: http.StatusBadRequest,
+			expectedBody:   "",
+		},
+		{
+			name: "Process error",
+			setupMocks: func(mh *httpmocks.MockRequestHandler, mrp *httpmocks.MockRequestParser, me *httpmocks.MockEngine) {
+				mrp.GetSessionIdFunc = func(rq any) (string, error) {
+					req := rq.(*http.Request)
+					return req.FormValue("phoneNumber"), nil
+				}
+				mrp.GetInputFunc = func(rq any) ([]byte, error) {
+					req := rq.(*http.Request)
+					text := req.FormValue("text")
+					parts := strings.Split(text, "*")
+					return []byte(parts[len(parts)-1]), nil
+				}
+				mh.ProcessFunc = func(rqs handlers.RequestSession) (handlers.RequestSession, error) {
+					return rqs, handlers.ErrStorage
+				}
+				mh.GetConfigFunc = func() engine.Config { return engine.Config{} }
+				mh.GetRequestParserFunc = func() handlers.RequestParser { return mrp }
+			},
+			formData: url.Values{
+				"phoneNumber": []string{"+1234567890"},
+				"text":        []string{"1*2*3"},
+			},
+			expectedStatus: http.StatusInternalServerError,
+			expectedBody:   "",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mockHandler := &httpmocks.MockRequestHandler{}
+			mockRequestParser := &httpmocks.MockRequestParser{}
+			mockEngine := &httpmocks.MockEngine{}
+			tt.setupMocks(mockHandler, mockRequestParser, mockEngine)
+
+			ash := NewATSessionHandler(mockHandler)
+
+			req := httptest.NewRequest(http.MethodPost, "/", strings.NewReader(tt.formData.Encode()))
+			req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
+			w := httptest.NewRecorder()
+
+			ash.ServeHTTP(w, req)
+
+			if w.Code != tt.expectedStatus {
+				t.Errorf("Expected status %d, got %d", tt.expectedStatus, w.Code)
+			}
+
+			if tt.expectedBody != "" && w.Body.String() != tt.expectedBody {
+				t.Errorf("Expected body %q, got %q", tt.expectedBody, w.Body.String())
+			}
+		})
+	}
+}
+
+func TestATSessionHandler_Output(t *testing.T) {
+	tests := []struct {
+		name           string
+		input          handlers.RequestSession
+		expectedPrefix string
+		expectedError  bool
+	}{
+		{
+			name: "Continue true",
+			input: handlers.RequestSession{
+				Continue: true,
+				Engine: &httpmocks.MockEngine{
+					FlushFunc: func(context.Context, io.Writer) (int, error) {
+						return 0, nil
+					},
+				},
+				Writer: &httpmocks.MockWriter{},
+			},
+			expectedPrefix: "CON ",
+			expectedError:  false,
+		},
+		{
+			name: "Continue false",
+			input: handlers.RequestSession{
+				Continue: false,
+				Engine: &httpmocks.MockEngine{
+					FlushFunc: func(context.Context, io.Writer) (int, error) {
+						return 0, nil
+					},
+				},
+				Writer: &httpmocks.MockWriter{},
+			},
+			expectedPrefix: "END ",
+			expectedError:  false,
+		},
+		{
+			name: "Flush error",
+			input: handlers.RequestSession{
+				Continue: true,
+				Engine: &httpmocks.MockEngine{
+					FlushFunc: func(context.Context, io.Writer) (int, error) {
+						return 0, errors.New("write error")
+					},
+				},
+				Writer: &httpmocks.MockWriter{},
+			},
+			expectedPrefix: "CON ",
+			expectedError:  true,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			ash := &ATSessionHandler{}
+			_, err := ash.Output(tt.input)
+
+			if tt.expectedError && err == nil {
+				t.Error("Expected an error, but got nil")
+			}
+
+			if !tt.expectedError && err != nil {
+				t.Errorf("Unexpected error: %v", err)
+			}
+
+			mw := tt.input.Writer.(*httpmocks.MockWriter)
+			if !mw.WriteStringCalled {
+				t.Error("WriteString was not called")
+			}
+
+			if mw.WrittenString != tt.expectedPrefix {
+				t.Errorf("Expected prefix %q, got %q", tt.expectedPrefix, mw.WrittenString)
+			}
+		})
+	}
+}
+
+func TestSessionHandler_ServeHTTP(t *testing.T) {
+	tests := []struct {
+		name           string
+		sessionID      string
+		input          []byte
+		parserErr      error
+		processErr     error
+		outputErr      error
+		resetErr       error
+		expectedStatus int
+	}{
+		{
+			name:           "Success",
+			sessionID:      "123",
+			input:          []byte("test input"),
+			expectedStatus: http.StatusOK,
+		},
+		{
+			name:           "Missing Session ID",
+			sessionID:      "",
+			parserErr:      handlers.ErrSessionMissing,
+			expectedStatus: http.StatusBadRequest,
+		},
+		{
+			name:           "Process Error",
+			sessionID:      "123",
+			input:          []byte("test input"),
+			processErr:     handlers.ErrStorage,
+			expectedStatus: http.StatusInternalServerError,
+		},
+		{
+			name:           "Output Error",
+			sessionID:      "123",
+			input:          []byte("test input"),
+			outputErr:      errors.New("output error"),
+			expectedStatus: http.StatusOK,
+		},
+		{
+			name:           "Reset Error",
+			sessionID:      "123",
+			input:          []byte("test input"),
+			resetErr:       errors.New("reset error"),
+			expectedStatus: http.StatusOK,
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			mockRequestParser := &httpmocks.MockRequestParser{
+				GetSessionIdFunc: func(any) (string, error) {
+					return tt.sessionID, tt.parserErr
+				},
+				GetInputFunc: func(any) ([]byte, error) {
+					return tt.input, nil
+				},
+			}
+
+			mockRequestHandler := &httpmocks.MockRequestHandler{
+				ProcessFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
+					return rs, tt.processErr
+				},
+				OutputFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
+					return rs, tt.outputErr
+				},
+				ResetFunc: func(rs handlers.RequestSession) (handlers.RequestSession, error) {
+					return rs, tt.resetErr
+				},
+				GetRequestParserFunc: func() handlers.RequestParser {
+					return mockRequestParser
+				},
+				GetConfigFunc: func() engine.Config {
+					return engine.Config{}
+				},
+			}
+
+			sessionHandler := ToSessionHandler(mockRequestHandler)
+
+			req := httptest.NewRequest(http.MethodPost, "/", bytes.NewBuffer(tt.input))
+			req.Header.Set("X-Vise-Session", tt.sessionID)
+
+			rr := httptest.NewRecorder()
+
+			sessionHandler.ServeHTTP(rr, req)
+
+			if status := rr.Code; status != tt.expectedStatus {
+				t.Errorf("handler returned wrong status code: got %v want %v",
+					status, tt.expectedStatus)
+			}
+		})
+	}
+}
+
+func TestSessionHandler_writeError(t *testing.T) {
+	handler := &SessionHandler{}
+	mockWriter := &httpmocks.MockWriter{}
+	err := errors.New("test error")
+
+	handler.writeError(mockWriter, http.StatusBadRequest, err)
+
+	if mockWriter.WrittenString != "" {
+		t.Errorf("Expected empty body, got %s", mockWriter.WrittenString)
+	}
+}
+
+func TestDefaultRequestParser_GetSessionId(t *testing.T) {
+	tests := []struct {
+		name          string
+		request       any
+		expectedID    string
+		expectedError error
+	}{
+		{
+			name: "Valid Session ID",
+			request: func() *http.Request {
+				req := httptest.NewRequest(http.MethodPost, "/", nil)
+				req.Header.Set("X-Vise-Session", "123456")
+				return req
+			}(),
+			expectedID:    "123456",
+			expectedError: nil,
+		},
+		{
+			name:          "Missing Session ID",
+			request:       httptest.NewRequest(http.MethodPost, "/", nil),
+			expectedID:    "",
+			expectedError: handlers.ErrSessionMissing,
+		},
+		{
+			name:          "Invalid Request Type",
+			request:       invalidRequestType{},
+			expectedID:    "",
+			expectedError: handlers.ErrInvalidRequest,
+		},
+	}
+
+	parser := &DefaultRequestParser{}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			id, err := parser.GetSessionId(tt.request)
+
+			if id != tt.expectedID {
+				t.Errorf("Expected session ID %s, got %s", tt.expectedID, id)
+			}
+
+			if err != tt.expectedError {
+				t.Errorf("Expected error %v, got %v", tt.expectedError, err)
+			}
+		})
+	}
+}
+
+func TestDefaultRequestParser_GetInput(t *testing.T) {
+	tests := []struct {
+		name          string
+		request       any
+		expectedInput []byte
+		expectedError error
+	}{
+		{
+			name: "Valid Input",
+			request: func() *http.Request {
+				return httptest.NewRequest(http.MethodPost, "/", bytes.NewBufferString("test input"))
+			}(),
+			expectedInput: []byte("test input"),
+			expectedError: nil,
+		},
+		{
+			name:          "Empty Input",
+			request:       httptest.NewRequest(http.MethodPost, "/", nil),
+			expectedInput: []byte{},
+			expectedError: nil,
+		},
+		{
+			name:          "Invalid Request Type",
+			request:       invalidRequestType{},
+			expectedInput: nil,
+			expectedError: handlers.ErrInvalidRequest,
+		},
+		{
+			name: "Read Error",
+			request: func() *http.Request {
+				return httptest.NewRequest(http.MethodPost, "/", &errorReader{})
+			}(),
+			expectedInput: nil,
+			expectedError: errors.New("read error"),
+		},
+	}
+
+	parser := &DefaultRequestParser{}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			input, err := parser.GetInput(tt.request)
+
+			if !bytes.Equal(input, tt.expectedInput) {
+				t.Errorf("Expected input %s, got %s", tt.expectedInput, input)
+			}
+
+			if err != tt.expectedError && (err == nil || err.Error() != tt.expectedError.Error()) {
+				t.Errorf("Expected error %v, got %v", tt.expectedError, err)
+			}
+		})
+	}
+}

internal/http/server.go

@@ -1,42 +1,42 @@
 package http
 
 import (
-	"fmt"
 	"io/ioutil"
 	"net/http"
+	"strconv"
 
-	"git.defalsify.org/vise.git/db"
-	"git.defalsify.org/vise.git/engine"
 	"git.defalsify.org/vise.git/logging"
-	"git.defalsify.org/vise.git/persist"
-	"git.defalsify.org/vise.git/resource"
 
-	"git.grassecon.net/urdt/ussd/internal/handlers/ussd"
+	"git.grassecon.net/urdt/ussd/internal/handlers"
 )
 
 var (
 	logg = logging.NewVanilla().WithDomain("httpserver")
 )
 
-type RequestParser interface {
-	GetSessionId(rq *http.Request) (string, error)
-	GetInput(rq *http.Request) ([]byte, error)
-}
-
 type DefaultRequestParser struct {
 }
 
-func(rp *DefaultRequestParser) GetSessionId(rq *http.Request) (string, error) {
+
-	v := rq.Header.Get("X-Vise-Session")
+func(rp *DefaultRequestParser) GetSessionId(rq any) (string, error) {
+	rqv, ok := rq.(*http.Request)
+	if !ok {
+		return "", handlers.ErrInvalidRequest
+	}
+	v := rqv.Header.Get("X-Vise-Session")
 	if v == "" {
-		return "", fmt.Errorf("no session found")
+		return "", handlers.ErrSessionMissing
 	}
 	return v, nil
 }
 
-func(rp *DefaultRequestParser) GetInput(rq *http.Request) ([]byte, error) {
+func(rp *DefaultRequestParser) GetInput(rq any) ([]byte, error) {
-	defer rq.Body.Close()
+	rqv, ok := rq.(*http.Request)
-	v, err := ioutil.ReadAll(rq.Body)
+	if !ok {
+		return nil, handlers.ErrInvalidRequest
+	}
+	defer rqv.Body.Close()
+	v, err := ioutil.ReadAll(rqv.Body)
 	if err != nil {
 		return nil, err
 	}
@@ -44,107 +44,79 @@ func(rp *DefaultRequestParser) GetInput(rq *http.Request) ([]byte, error) {
 }
 
 type SessionHandler struct {
-	cfgTemplate engine.Config
+	handlers.RequestHandler
-	rp RequestParser
-	rs resource.Resource
-	//first resource.EntryFunc
-	hn *ussd.Handlers
-	provider StorageProvider
 }
 
-//func NewSessionHandler(cfg engine.Config, rs resource.Resource, stateDb db.Db, userdataDb db.Db, rp RequestParser, first resource.EntryFunc) *SessionHandler {
+func ToSessionHandler(h handlers.RequestHandler) *SessionHandler {
-func NewSessionHandler(cfg engine.Config, rs resource.Resource, stateDb db.Db, userdataDb db.Db, rp RequestParser, hn *ussd.Handlers) *SessionHandler {
 	return &SessionHandler{
-		cfgTemplate: cfg,
+		RequestHandler: h,
-		rs: rs,
-		//first: first,
-		hn: hn,
-		rp: rp,
-		provider: NewSimpleStorageProvider(stateDb, userdataDb),
 	}
 }
 
-func(f *SessionHandler) writeError(w http.ResponseWriter, code int, msg string, err error) {
+func(f *SessionHandler) writeError(w http.ResponseWriter, code int, err error) {
-	w.Header().Set("X-Vise", msg + ": " + err.Error())
+	s := err.Error()
-	w.Header().Set("Content-Length", "0")
+	w.Header().Set("Content-Length", strconv.Itoa(len(s)))
 	w.WriteHeader(code)
 	_, err = w.Write([]byte{})
 	if err != nil {
+		logg.Errorf("error writing error!!", "err", err, "olderr", s)
 		w.WriteHeader(500)
-		w.Header().Set("X-Vise", err.Error())
 	}
 	return 
 }
 
-func(f* SessionHandler) Shutdown() {
-	err := f.provider.Close()
-	if err != nil {
-		logg.Errorf("handler shutdown error", "err", err)
-	}
-}
-
 func(f *SessionHandler) ServeHTTP(w http.ResponseWriter, req *http.Request) {
-	var r bool
+	var code int
-	sessionId, err := f.rp.GetSessionId(req)
+	var err error
-	if err != nil {
+	var perr error
-		f.writeError(w, 400, "Session missing", err)
-		return
-	}
-	input, err := f.rp.GetInput(req)
-	if err != nil {
-		f.writeError(w, 400, "Input read fail", err)
-		return
-	}
-	ctx := req.Context()
-	cfg := f.cfgTemplate
-	cfg.SessionId = sessionId
 
-	logg.InfoCtxf(ctx, "new request",  "session", cfg.SessionId, "input", input)
+	rqs := handlers.RequestSession{
-
+		Ctx: req.Context(),
-	storage, err := f.provider.Get(cfg.SessionId)
+		Writer: w,
-	if err != nil {
-		f.writeError(w, 500, "Storage retrieval fail", err)
-		return
-	}
-	f.hn = f.hn.WithPersister(storage.Persister)
-	defer f.provider.Put(cfg.SessionId, storage)
-	en := getEngine(cfg, f.rs, storage.Persister)
-	en = en.WithFirst(f.hn.Init)
-	if cfg.EngineDebug {
-		en = en.WithDebug(nil)
 	}
 
-	r, err = en.Init(ctx)
+	rp := f.GetRequestParser()
+	cfg := f.GetConfig()
+	cfg.SessionId, err = rp.GetSessionId(req)
 	if err != nil {
-		f.writeError(w, 500, "Engine init fail", err)
+		logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
+		f.writeError(w, 400, err)
+	}
+	rqs.Config = cfg
+	rqs.Input, err = rp.GetInput(req)
+	if err != nil {
+		logg.ErrorCtxf(rqs.Ctx, "", "header processing error", err)
+		f.writeError(w, 400, err)
 		return
 	}
-	if r && len(input) > 0 {
+
-		r, err = en.Exec(ctx, input)
+	rqs, err = f.Process(rqs)
+	switch err {
+	case handlers.ErrStorage:
+		code = 500
+	case handlers.ErrEngineInit:
+		code = 500
+	case handlers.ErrEngineExec:
+		code = 500
+	default:
+		code = 200
 	}
-	if err != nil {
+
-		f.writeError(w, 500, "Engine exec fail", err)
+	if code != 200 {
+		f.writeError(w, 500, err)
 		return
 	}
 
 	w.WriteHeader(200)
 	w.Header().Set("Content-Type", "text/plain")
-	_, err = en.WriteResult(ctx, w)
+	rqs, err = f.Output(rqs)
+	rqs, perr = f.Reset(rqs)
 	if err != nil {
-		f.writeError(w, 500, "Write result fail", err)
+		f.writeError(w, 500, err)
 		return
 	}
-	err = en.Finish()
+	if perr != nil {
-	if err != nil {
+		f.writeError(w, 500, perr)
-		f.writeError(w, 500, "Engine finish fail", err)
 		return
 	}
-
-	_ = r
-}
-
-func getEngine(cfg engine.Config, rs resource.Resource, pr *persist.Persister) *engine.DefaultEngine {
-	en := engine.NewEngine(cfg, rs)
-	en = en.WithPersister(pr)
-	return en
 }

internal/mocks/httpmocks/enginemock.go

@@ -0,0 +1,30 @@
+package httpmocks
+
+import (
+	"context"
+	"io"
+)
+
+// MockEngine implements the engine.Engine interface for testing
+type MockEngine struct {
+	InitFunc   func(context.Context) (bool, error)
+	ExecFunc   func(context.Context, []byte) (bool, error)
+	FlushFunc  func(context.Context, io.Writer) (int, error)
+	FinishFunc func() error
+}
+
+func (m *MockEngine) Init(ctx context.Context) (bool, error) {
+	return m.InitFunc(ctx)
+}
+
+func (m *MockEngine) Exec(ctx context.Context, input []byte) (bool, error) {
+	return m.ExecFunc(ctx, input)
+}
+
+func (m *MockEngine) Flush(ctx context.Context, w io.Writer) (int, error) {
+	return m.FlushFunc(ctx, w)
+}
+
+func (m *MockEngine) Finish() error {
+	return m.FinishFunc()
+}

internal/mocks/httpmocks/requesthandlermock.go

@@ -0,0 +1,47 @@
+package httpmocks
+
+import (
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/persist"
+	"git.defalsify.org/vise.git/resource"
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+)
+
+// MockRequestHandler implements handlers.RequestHandler interface for testing
+type MockRequestHandler struct {
+	ProcessFunc          func(handlers.RequestSession) (handlers.RequestSession, error)
+	GetConfigFunc        func() engine.Config
+	GetEngineFunc        func(cfg engine.Config, rs resource.Resource, pe *persist.Persister) engine.Engine
+	OutputFunc           func(rs handlers.RequestSession) (handlers.RequestSession, error)
+	ResetFunc            func(rs handlers.RequestSession) (handlers.RequestSession, error)
+	ShutdownFunc         func()
+	GetRequestParserFunc func() handlers.RequestParser
+}
+
+func (m *MockRequestHandler) Process(rqs handlers.RequestSession) (handlers.RequestSession, error) {
+	return m.ProcessFunc(rqs)
+}
+
+func (m *MockRequestHandler) GetConfig() engine.Config {
+	return m.GetConfigFunc()
+}
+
+func (m *MockRequestHandler) GetEngine(cfg engine.Config, rs resource.Resource, pe *persist.Persister) engine.Engine {
+	return m.GetEngineFunc(cfg, rs, pe)
+}
+
+func (m *MockRequestHandler) Output(rs handlers.RequestSession) (handlers.RequestSession, error) {
+	return m.OutputFunc(rs)
+}
+
+func (m *MockRequestHandler) Reset(rs handlers.RequestSession) (handlers.RequestSession, error) {
+	return m.ResetFunc(rs)
+}
+
+func (m *MockRequestHandler) Shutdown() {
+	m.ShutdownFunc()
+}
+
+func (m *MockRequestHandler) GetRequestParser() handlers.RequestParser {
+	return m.GetRequestParserFunc()
+}

internal/mocks/httpmocks/requestparsermock.go

@@ -0,0 +1,15 @@
+package httpmocks
+
+// MockRequestParser implements the handlers.RequestParser interface for testing
+type MockRequestParser struct {
+	GetSessionIdFunc func(any) (string, error)
+	GetInputFunc     func(any) ([]byte, error)
+}
+
+func (m *MockRequestParser) GetSessionId(rq any) (string, error) {
+	return m.GetSessionIdFunc(rq)
+}
+
+func (m *MockRequestParser) GetInput(rq any) ([]byte, error) {
+	return m.GetInputFunc(rq)
+}

internal/mocks/httpmocks/writermock.go

@@ -0,0 +1,25 @@
+package httpmocks
+
+import "net/http"
+
+// MockWriter implements a mock io.Writer for testing
+type MockWriter struct {
+	WriteStringCalled bool
+	WrittenString     string
+}
+
+func (m *MockWriter) Write(p []byte) (n int, err error) {
+	return len(p), nil
+}
+
+func (m *MockWriter) WriteString(s string) (n int, err error) {
+	m.WriteStringCalled = true
+	m.WrittenString = s
+	return len(s), nil
+}
+
+func (m *MockWriter) Header() http.Header {
+	return http.Header{}
+}
+
+func (m *MockWriter) WriteHeader(statusCode int) {}

internal/storage/gdbm.go

@@ -0,0 +1,116 @@
+package storage
+
+import (
+	"context"
+
+	"git.defalsify.org/vise.git/db"
+	"git.defalsify.org/vise.git/lang"
+	gdbmdb "git.defalsify.org/vise.git/db/gdbm"
+)
+
+var (
+	dbC map[string]chan db.Db
+)
+
+type ThreadGdbmDb struct {
+	db db.Db
+	connStr string
+}
+
+func NewThreadGdbmDb() *ThreadGdbmDb {
+	if dbC == nil {
+		dbC = make(map[string]chan db.Db)
+	}
+	return &ThreadGdbmDb{}
+}
+
+func(tdb *ThreadGdbmDb) Connect(ctx context.Context, connStr string) error {
+	var ok bool
+	_, ok = dbC[connStr]
+	if ok {
+		logg.WarnCtxf(ctx, "already registered thread gdbm, skipping", "connStr", connStr)
+		return nil
+	}
+	gdb := gdbmdb.NewGdbmDb()
+	err := gdb.Connect(ctx, connStr)
+	if err != nil {
+		return err
+	}
+	dbC[connStr] = make(chan db.Db, 1)
+	dbC[connStr]<- gdb
+	tdb.connStr = connStr
+	return nil
+}
+
+func(tdb *ThreadGdbmDb) reserve() {
+	if tdb.db == nil {
+		tdb.db = <-dbC[tdb.connStr]
+	}
+}
+
+func(tdb *ThreadGdbmDb) release() {
+	if tdb.db == nil {
+		return
+	}
+	dbC[tdb.connStr] <- tdb.db
+	tdb.db = nil
+}
+
+func(tdb *ThreadGdbmDb) SetPrefix(pfx uint8) {
+	tdb.reserve()
+	tdb.db.SetPrefix(pfx)
+}
+
+func(tdb *ThreadGdbmDb) SetSession(sessionId string) {
+	tdb.reserve()
+	tdb.db.SetSession(sessionId)
+}
+
+func(tdb *ThreadGdbmDb) SetLanguage(lng *lang.Language) {
+	tdb.reserve()
+	tdb.db.SetLanguage(lng)
+}
+
+func(tdb *ThreadGdbmDb) Safe() bool {
+	tdb.reserve()
+	v := tdb.db.Safe()
+	tdb.release()
+	return v
+}
+
+func(tdb *ThreadGdbmDb) Prefix() uint8 {
+	tdb.reserve()
+	v := tdb.db.Prefix()
+	tdb.release()
+	return v
+}
+
+func(tdb *ThreadGdbmDb) SetLock(typ uint8, locked bool) error {
+	tdb.reserve()
+	err := tdb.db.SetLock(typ, locked)
+	tdb.release()
+	return err
+}
+
+func(tdb *ThreadGdbmDb) Put(ctx context.Context, key []byte, val []byte) error {
+	tdb.reserve()
+	err := tdb.db.Put(ctx, key, val)
+	tdb.release()
+	return err
+}
+
+func(tdb *ThreadGdbmDb) Get(ctx context.Context, key []byte) ([]byte, error) {
+	tdb.reserve()
+	v, err := tdb.db.Get(ctx, key)
+	tdb.release()
+	return v, err
+}
+
+func(tdb *ThreadGdbmDb) Close() error {
+	tdb.reserve()
+	close(dbC[tdb.connStr])
+	delete(dbC, tdb.connStr)
+	err := tdb.db.Close()
+	tdb.db = nil
+	return err
+}

internal/storage/storage.go

@@ -1,41 +1,45 @@
-package http
+package storage
 
 import (
 	"git.defalsify.org/vise.git/db"
 	"git.defalsify.org/vise.git/persist"
 )
 
+const (
+	DATATYPE_CUSTOM = 128 
+)
+
 type Storage struct {
 	Persister *persist.Persister
 	UserdataDb db.Db	
 }
 
 type StorageProvider interface {
-	Get(sessionId string) (Storage, error)
+	Get(sessionId string) (*Storage, error)
-	Put(sessionId string, storage Storage) error
+	Put(sessionId string, storage *Storage) error
 	Close() error
 }
 
 type SimpleStorageProvider struct {
-	Storage
+	*Storage
 }
 
 func NewSimpleStorageProvider(stateStore db.Db, userdataStore db.Db) StorageProvider {
 	pe := persist.NewPersister(stateStore)
 	pe = pe.WithFlush()
 	return &SimpleStorageProvider{
-		Storage: Storage{
+		Storage: &Storage{
 			Persister: pe,
 			UserdataDb: userdataStore,
 		},
 	}
 }
 
-func (p *SimpleStorageProvider) Get(sessionId string) (Storage, error) {
+func (p *SimpleStorageProvider) Get(sessionId string) (*Storage, error) {
 	return p.Storage, nil
 }
 
-func (p *SimpleStorageProvider) Put(sessionId string, storage Storage) error {
+func (p *SimpleStorageProvider) Put(sessionId string, storage *Storage) error {
 	return nil
 }
 

internal/storage/storageservice.go

@@ -0,0 +1,103 @@
+package storage
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path"
+
+	"git.defalsify.org/vise.git/db"
+	fsdb "git.defalsify.org/vise.git/db/fs"
+	"git.defalsify.org/vise.git/persist"
+	"git.defalsify.org/vise.git/resource"
+	"git.defalsify.org/vise.git/logging"
+)
+
+var (
+	logg = logging.NewVanilla().WithDomain("storage")
+)	
+
+type StorageService interface {
+	GetPersister(ctx context.Context) (*persist.Persister, error)
+	GetUserdataDb(ctx context.Context) db.Db
+	GetResource(ctx context.Context) (resource.Resource, error)
+	EnsureDbDir() error
+}
+
+type MenuStorageService struct{
+	dbDir string
+	resourceDir string
+	resourceStore db.Db
+	stateStore db.Db
+	userDataStore db.Db
+}
+
+func NewMenuStorageService(dbDir string, resourceDir string) *MenuStorageService {
+	return &MenuStorageService{
+		dbDir: dbDir,
+		resourceDir: resourceDir,
+	}
+}
+
+func (ms *MenuStorageService) GetPersister(ctx context.Context) (*persist.Persister, error) {
+	ms.stateStore = NewThreadGdbmDb()
+	storeFile := path.Join(ms.dbDir, "state.gdbm")
+	err := ms.stateStore.Connect(ctx, storeFile)
+	if err != nil {
+		return nil, err
+	}
+	pr := persist.NewPersister(ms.stateStore)
+	logg.TraceCtxf(ctx, "menu storage service", "persist", pr, "store", ms.stateStore)
+	return pr, nil
+}
+
+func (ms *MenuStorageService) GetUserdataDb(ctx context.Context) (db.Db, error) {
+	ms.userDataStore = NewThreadGdbmDb()
+	storeFile := path.Join(ms.dbDir, "userdata.gdbm")
+	err := ms.userDataStore.Connect(ctx, storeFile)
+	if err != nil {
+		return nil, err
+	}
+	return ms.userDataStore, nil
+}
+
+func (ms *MenuStorageService) GetResource(ctx context.Context) (resource.Resource, error) {
+	ms.resourceStore = fsdb.NewFsDb()
+	err := ms.resourceStore.Connect(ctx, ms.resourceDir)
+	if err != nil {
+		return nil, err
+	}
+	rfs := resource.NewDbResource(ms.resourceStore)
+	return rfs, nil
+}
+
+func (ms *MenuStorageService) GetStateStore(ctx context.Context) (db.Db, error) {
+	if ms.stateStore != nil {
+		panic("set up store when already exists")
+	}
+	ms.stateStore = NewThreadGdbmDb()
+	storeFile := path.Join(ms.dbDir, "state.gdbm")
+	err := ms.stateStore.Connect(ctx, storeFile)
+	if err != nil {
+		return nil, err
+	}
+	return ms.stateStore, nil
+}
+
+func (ms *MenuStorageService) EnsureDbDir() error {
+	err := os.MkdirAll(ms.dbDir, 0700)
+	if err != nil {
+		return fmt.Errorf("state dir create exited with error: %v\n", err)
+	}
+	return nil
+}
+
+func (ms *MenuStorageService) Close() error {
+	errA := ms.stateStore.Close()
+	errB := ms.userDataStore.Close()
+	errC := ms.resourceStore.Close()
+	if errA != nil || errB != nil || errC != nil {
+		return fmt.Errorf("%v %v %v", errA, errB, errC)
+	}
+	return nil
+}

internal/testutil/TestEngine.go

@@ -0,0 +1,119 @@
+package testutil
+
+import (
+	"context"
+	"fmt"
+	"os"
+	"path"
+	"time"
+
+	"git.defalsify.org/vise.git/engine"
+	"git.defalsify.org/vise.git/logging"
+	"git.defalsify.org/vise.git/resource"
+	"git.grassecon.net/urdt/ussd/internal/handlers"
+	"git.grassecon.net/urdt/ussd/internal/handlers/server"
+	"git.grassecon.net/urdt/ussd/internal/storage"
+	testdataloader "github.com/peteole/testdata-loader"
+)
+
+var (
+	baseDir   = testdataloader.GetBasePath()
+	logg      = logging.NewVanilla()
+	scriptDir = path.Join(baseDir, "services", "registration")
+)
+
+func TestEngine(sessionId string) (engine.Engine, func(), chan bool) {
+	ctx := context.Background()
+	ctx = context.WithValue(ctx, "SessionId", sessionId)
+	pfp := path.Join(scriptDir, "pp.csv")
+
+	var eventChannel = make(chan bool)
+
+	cfg := engine.Config{
+		Root:       "root",
+		SessionId:  sessionId,
+		OutputSize: uint32(160),
+		FlagCount:  uint32(16),
+	}
+
+	dbDir := ".test_state"
+	resourceDir := scriptDir
+	menuStorageService := storage.NewMenuStorageService(dbDir, resourceDir)
+
+	err := menuStorageService.EnsureDbDir()
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	rs, err := menuStorageService.GetResource(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	pe, err := menuStorageService.GetPersister(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	userDataStore, err := menuStorageService.GetUserdataDb(ctx)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	dbResource, ok := rs.(*resource.DbResource)
+	if !ok {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	lhs, err := handlers.NewLocalHandlerService(pfp, true, dbResource, cfg, rs)
+	lhs.SetDataStore(&userDataStore)
+	lhs.SetPersister(pe)
+
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	switch AccountService.(type) {
+	case *server.MockAccountService:
+		go func() {
+			eventChannel <- false
+		}()
+	case *server.AccountService:
+		go func() {
+			time.Sleep(5 * time.Second) // Wait for 5 seconds
+			eventChannel <- true
+		}()
+	default:
+		panic("Unknown account service type")
+	}
+
+	hl, err := lhs.GetHandler(AccountService)
+	if err != nil {
+		fmt.Fprintf(os.Stderr, err.Error())
+		os.Exit(1)
+	}
+
+	en := lhs.GetEngine()
+	en = en.WithFirst(hl.Init)
+	cleanFn := func() {
+		err := en.Finish()
+		if err != nil {
+			logg.Errorf(err.Error())
+		}
+
+		err = menuStorageService.Close()
+		if err != nil {
+			logg.Errorf(err.Error())
+		}
+		logg.Infof("testengine storage closed")
+	}
+
+	//en = en.WithDebug(nil)
+	return en, cleanFn, eventChannel
+}

internal/testutil/tag_offline.go

@@ -0,0 +1,13 @@
+// +build !online
+
+package testutil
+
+import (
+	"git.grassecon.net/urdt/ussd/internal/handlers/server"
+)
+
+var AccountService server.AccountServiceInterface
+
+func init() {
+	AccountService = &server.MockAccountService{}
+}

internal/testutil/tag_online.go

@@ -0,0 +1,12 @@
+//go:build online
+// +build online
+
+package testutil
+
+import "git.grassecon.net/urdt/ussd/internal/handlers/server"
+
+var AccountService server.AccountServiceInterface
+
+func init() {
+	AccountService = &server.AccountService{}
+}

internal/utils/db.go

@@ -1,10 +1,7 @@
 package utils
 
 import (
-	"context"
 	"encoding/binary"
-
-	"git.defalsify.org/vise.git/db"
 )
 
 type DataTyp uint16
@@ -25,6 +22,7 @@ const (
 	DATA_OFFERINGS
 	DATA_RECIPIENT
 	DATA_AMOUNT
+	DATA_TEMPORARY_PIN
 )
 
 func typToBytes(typ DataTyp) []byte {
@@ -37,21 +35,3 @@ func PackKey(typ DataTyp, data []byte) []byte {
 	v := typToBytes(typ)
 	return append(v, data...)
 }
-
-func ReadEntry(ctx context.Context, store db.Db, sessionId string, typ DataTyp) ([]byte, error) {
-	store.SetPrefix(db.DATATYPE_USERDATA)
-	store.SetSession(sessionId)
-	k := PackKey(typ, []byte(sessionId))
-	b, err := store.Get(ctx, k)
-	if err != nil {
-		return nil, err
-	}
-	return b, nil
-}
-
-func WriteEntry(ctx context.Context, store db.Db, sessionId string, typ DataTyp, value []byte) error {
-	store.SetPrefix(db.DATATYPE_USERDATA)
-	store.SetSession(sessionId)
-	k := PackKey(typ, []byte(sessionId))
-	return store.Put(ctx, k, value)
-}

internal/utils/isocode.go

@@ -0,0 +1,11 @@
+package utils
+
+var isoCodes = map[string]bool{
+	"eng": true, // English
+	"swa": true, // Swahili
+
+}
+
+func IsValidISO639(code string) bool {
+	return isoCodes[code]
+}

services/registration/Makefile

@@ -1,10 +1,11 @@
 # Variables to match files in the current directory
 INPUTS = $(wildcard ./*.vis)
 TXTS = $(wildcard ./*.txt.orig)
+VISE_PATH := ../../go-vise
 
 # Rule to build .bin files from .vis files
 %.vis:
-	go run  ../../go-vise/dev/asm/main.go -f pp.csv $(basename $@).vis > $(basename $@).bin
+	go run  $(VISE_PATH)/dev/asm/main.go -f pp.csv $(basename $@).vis > $(basename $@).bin
 	@echo "Built $(basename $@).bin from $(basename $@).vis"
 
 # Rule to copy .orig files to .txt

services/registration/_catch

@@ -0,0 +1 @@
+Something went wrong.Please try again

services/registration/_catch.vis

@@ -0,0 +1 @@
+HALT

services/registration/amount.vis

@@ -9,4 +9,5 @@ CATCH invalid_amount flag_invalid_amount 1
 INCMP _ 0
 LOAD get_recipient 12
 LOAD get_sender 64
+LOAD get_amount 12
 INCMP transaction_pin *

services/registration/back_menu_swa

@@ -1 +1 @@
-Rudi
+Rudi

services/registration/balances

@@ -1 +1 @@
-Balances:
+Balances:

services/registration/balances_swa

@@ -1 +1 @@
-Salio
+Salio:

services/registration/change_language

@@ -0,0 +1 @@
+Select language:

services/registration/change_language.vis

@@ -0,0 +1,10 @@
+LOAD reset_account_authorized 0
+LOAD reset_incorrect 0
+CATCH incorrect_pin flag_incorrect_pin 1
+CATCH pin_entry flag_account_authorized 0
+MOUT english 0
+MOUT kiswahili 1
+HALT
+INCMP set_default 0
+INCMP set_swa 1
+INCMP . *

services/registration/change_language_menu_swa

@@ -1 +1 @@
-Badili lugha
+Badili lugha

services/registration/change_language_swa

@@ -0,0 +1 @@
+Chagua lugha:

services/registration/change_pin_menu

@@ -1 +1 @@
-Change PIN
+Change PIN

services/registration/change_pin_menu_swa

@@ -1 +1 @@
-Badili PIN
+Badili PIN

services/registration/check_statement_menu

@@ -1 +1 @@
-Check statement
+Check statement

services/registration/community_balance

@@ -1,2 +1 @@
-Your community balance is: 0.00SRF
+Your community balance is: 0.00SRF
-

services/registration/community_balance_menu

@@ -1 +1 @@
-Community  balance
+Community balance

services/registration/confirm_pin_change

@@ -0,0 +1 @@
+Confirm your new PIN:

services/registration/confirm_pin_change.vis

@@ -0,0 +1,5 @@
+CATCH invalid_pin flag_valid_pin 0
+MOUT back 0
+HALT
+INCMP _ 0
+INCMP pin_reset_success * 

services/registration/confirm_pin_change_swa

@@ -0,0 +1 @@
+Thibitisha PIN yako mpya:

services/registration/edit_familyname_menu

@@ -0,0 +1 @@
+Edit family name

services/registration/edit_familyname_menu_swa

@@ -0,0 +1 @@
+Weka jina la familia

services/registration/edit_name_menu

@@ -1 +1 @@
-Edit name
+Edit name

services/registration/edit_name_menu_swa

@@ -1 +1 @@
-Weka jina
+Weka jina

services/registration/edit_offerings_menu

@@ -1 +1 @@
-Edit offerings
+Edit offerings

services/registration/edit_profile.vis

@@ -1,20 +1,21 @@
 LOAD reset_account_authorized 16
+RELOAD reset_account_authorized
 LOAD reset_allow_update 0
 RELOAD reset_allow_update
 MOUT edit_name 1
-MOUT edit_gender 2
+MOUT edit_familyname 2
-MOUT edit_yob 3
+MOUT edit_gender 3
-MOUT edit_location 4
+MOUT edit_yob 4
-MOUT edit_offerings 5
+MOUT edit_location 5
-MOUT view 6
+MOUT edit_offerings 6
+MOUT view 7
 MOUT back 0
 HALT
-INCMP _ 0
+INCMP my_account 0
-LOAD set_reset_single_edit 0
-RELOAD set_reset_single_edit
 INCMP enter_name 1
-INCMP select_gender 2
+INCMP enter_familyname 2
-INCMP enter_yob 3
+INCMP select_gender 3
-INCMP enter_location 4
+INCMP enter_yob 4
-INCMP enter_offerings 5
+INCMP enter_location 5
-INCMP view_profile 6
+INCMP enter_offerings 6
+INCMP view_profile 7

services/registration/enter_familyname

@@ -1 +1 @@
-Enter family name:
+Enter family name:

services/registration/enter_familyname.vis

@@ -1,5 +1,9 @@
-LOAD save_firstname 0
+CATCH incorrect_pin flag_incorrect_pin 1
+CATCH profile_update_success flag_allow_update 1
+LOAD save_familyname 0
+RELOAD save_familyname
 MOUT back 0
 HALT
+RELOAD save_familyname
 INCMP _ 0
-INCMP select_gender *
+INCMP pin_entry *

services/registration/enter_familyname_swa

@@ -0,0 +1 @@
+Weka jina la familia

services/registration/enter_location

@@ -1 +1 @@
-Enter your location:
+Enter your location:

services/registration/enter_location.vis

@@ -1,9 +1,8 @@
-CATCH incorrect_date_format flag_incorrect_date_format 1
+CATCH incorrect_pin flag_incorrect_pin 1
-LOAD save_yob 0
+CATCH profile_update_success flag_allow_update 1
-CATCH update_success flag_allow_update 1
+LOAD save_location 0
 MOUT back 0
 HALT
+RELOAD save_location
 INCMP _ 0
-LOAD save_location 0
+INCMP pin_entry *
-CATCH pin_entry flag_single_edit 1
-INCMP enter_offerings *

services/registration/enter_name.vis

@@ -1,4 +1,9 @@
+CATCH incorrect_pin flag_incorrect_pin 1
+CATCH profile_update_success flag_allow_update 1
+LOAD save_firstname 0
+RELOAD save_firstname 
 MOUT back 0
 HALT
+RELOAD save_firstname
 INCMP _ 0
-INCMP enter_familyname *
+INCMP pin_entry *

services/registration/enter_name_swa

@@ -1 +1 @@
-Weka majina yako ya kwanza:
+Weka majina yako ya kwanza:

services/registration/enter_offerings.vis

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

services/registration/enter_yob.vis

@@ -1,9 +1,10 @@
-LOAD save_gender 0
+CATCH incorrect_pin flag_incorrect_pin 1
-CATCH update_success flag_allow_update 1
+CATCH profile_update_success flag_allow_update 1
+LOAD save_yob 0
 MOUT back 0
 HALT
+LOAD verify_yob 0
+CATCH incorrect_date_format flag_incorrect_date_format 1
+RELOAD save_yob
 INCMP _ 0
-LOAD verify_yob 8
+INCMP pin_entry *
-LOAD save_yob 0
-CATCH pin_entry flag_single_edit 1
-INCMP enter_location *

services/registration/female_menu

@@ -1 +1 @@
-Female
+Female

services/registration/guard_pin_menu

@@ -1 +1 @@
-Guard my PIN
+Guard my PIN

services/registration/guard_pin_menu_swa

@@ -1 +1 @@
-Linda PIN yangu
+Linda PIN yangu

services/registration/help.vis

@@ -0,0 +1,2 @@
+LOAD quit_with_help 0
+HALT

services/registration/incorrect_date_format

@@ -1,2 +1,2 @@
 The year of birth you entered is invalid.
-Please try again.
+Please try again.

services/registration/incorrect_pin

@@ -1 +1 @@
-Incorrect  pin
+Incorrect pin

services/registration/invalid_pin

@@ -0,0 +1 @@
+The PIN you entered is invalid.The PIN must be different from your current PIN.For help call +254757628885

services/registration/invalid_pin.vis

@@ -0,0 +1,3 @@
+MOUT back 0
+HALT
+INCMP _ 0

services/registration/invalid_pin_swa

@@ -0,0 +1,2 @@
+PIN mpya na udhibitisho wa PIN mpya hazilingani. Tafadhali jaribu tena. 
+Kwa usaidizi piga simu +254757628885.

services/registration/language_changed

@@ -0,0 +1 @@
+Your language change request was successful.

services/registration/language_changed.vis

@@ -0,0 +1,6 @@
+RELOAD reset_account_authorized
+MOUT back 0
+MOUT quit 9
+HALT
+INCMP ^ 0
+INCMP quit 9

services/registration/language_changed_swa

@@ -0,0 +1 @@
+Ombi lako la kubadilisha lugha limefanikiwa.

services/registration/locale/swa/default.po

@@ -6,3 +6,7 @@ msgstr "Ombi lako limetumwa. %s atapokea %s kutoka kwa %s."
 
 msgid "Thank you for using Sarafu. Goodbye!"
 msgstr "Asante kwa kutumia huduma ya Sarafu. Kwaheri!"
+
+
+msgid "For more help,please call: 0757628885"
+msgstr "Kwa usaidizi zaidi,piga: 0757628885"

services/registration/main.vis

@@ -10,6 +10,6 @@ HALT
 INCMP send 1
 INCMP quit 2
 INCMP my_account 3
-INCMP quit 4
+INCMP help 4
 INCMP quit 9
 INCMP . *

services/registration/my_account.vis

@@ -7,8 +7,9 @@ MOUT pin_options 5
 MOUT my_address 6
 MOUT back 0
 HALT
-INCMP _ 0
+INCMP main 0
 INCMP edit_profile 1
+INCMP change_language 2
 INCMP balances 3
 INCMP pin_management 5
 INCMP address 6

services/registration/my_address_menu_swa

@@ -1 +1 @@
-Anwani yangu
+Anwani yangu

services/registration/my_balance_swa

@@ -1 +1 @@
-Salio lako ni: 0.00 SRF
+Salio lako ni: 0.00 SRF

services/registration/my_vouchers

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

services/registration/my_vouchers.vis

@@ -0,0 +1,6 @@
+MOUT select_voucher 1
+MOUT voucher_details 2
+MOUT back 0
+HALT
+INCMP _ 0
+INCMP select_voucher 1

services/registration/new_pin

@@ -0,0 +1 @@
+Enter a new four number PIN:

services/registration/new_pin.vis

@@ -0,0 +1,10 @@
+CATCH _ flag_allow_update 0
+MOUT back 0
+HALT
+INCMP _ 0
+LOAD save_temporary_pin 6
+RELOAD save_temporary_pin
+LOAD verify_new_pin 8
+RELOAD verify_new_pin
+CATCH incorrect_pin flag_incorrect_pin 1
+INCMP confirm_pin_change * 

services/registration/new_pin_swa

@@ -0,0 +1 @@
+Weka PIN mpya ya nne nambari:

services/registration/no_menu

@@ -1 +1 @@
-no
+no

services/registration/no_menu_swa

@@ -1 +1 @@
-la
+la

services/registration/old_pin

@@ -0,0 +1 @@
+Enter your old PIN

services/registration/old_pin.vis

@@ -0,0 +1,9 @@
+LOAD reset_allow_update 0
+RELOAD reset_allow_update
+MOUT back 0
+HALT
+LOAD authorize_account 12
+RELOAD authorize_account
+CATCH incorrect_pin flag_incorrect_pin 1
+INCMP _ 0
+INCMP new_pin *

services/registration/old_pin_swa

@@ -0,0 +1 @@
+Weka PIN yako ya zamani:

services/registration/pin_entry_swa

@@ -1 +1 @@
-Tafadhali weka PIN yako
+Tafadhali weka PIN yako

services/registration/pin_management

@@ -1 +1 @@
-PIN Management
+PIN Management

services/registration/pin_management.vis

@@ -4,3 +4,4 @@ MOUT guard_pin 3
 MOUT back 0
 HALT
 INCMP _ 0
+INCMP old_pin 1

services/registration/pin_reset_mismatch

@@ -0,0 +1 @@
+The PIN is not a match. Try again

services/registration/pin_reset_mismatch.vis

@@ -0,0 +1,5 @@
+MOUT retry 1
+MOUT quit 9
+HALT
+INCMP confirm_pin_change 1
+INCMP quit 9

services/registration/pin_reset_success

@@ -0,0 +1 @@
+Your PIN change request has been successful

services/registration/pin_reset_success.vis

@@ -0,0 +1,8 @@
+LOAD confirm_pin_change 0
+RELOAD confirm_pin_change
+CATCH pin_reset_mismatch flag_pin_mismatch 1
+MOUT back 0
+MOUT quit 9
+HALT
+INCMP main 0
+INCMP quit 9