common/transfer_statements.go

@@ -0,0 +1,115 @@
+package common
+
+import (
+	"context"
+	"fmt"
+	"strings"
+	"time"
+
+	"git.grassecon.net/urdt/ussd/internal/storage"
+	dataserviceapi "github.com/grassrootseconomics/ussd-data-service/pkg/api"
+)
+
+// TransferMetadata helps organize data fields
+type TransferMetadata struct {
+	Senders        string
+	Recipients     string
+	TransferValues string
+	Addresses      string
+	TxHashes       string
+	Dates          string
+	Symbols        string
+	Decimals       string
+}
+
+// ProcessTransfers converts transfers into formatted strings
+func ProcessTransfers(transfers []dataserviceapi.Last10TxResponse) TransferMetadata {
+	var data TransferMetadata
+	var senders, recipients, transferValues, addresses, txHashes, dates, symbols, decimals []string
+
+	for _, t := range transfers {
+		senders = append(senders, t.Sender)
+		recipients = append(recipients, t.Recipient)
+
+		// Scale down the amount
+		scaledBalance := ScaleDownBalance(t.TransferValue, t.TokenDecimals)
+		transferValues = append(transferValues, scaledBalance)
+
+		addresses = append(addresses, t.ContractAddress)
+		txHashes = append(txHashes, t.TxHash)
+		dates = append(dates, fmt.Sprintf("%s", t.DateBlock))
+		symbols = append(symbols, t.TokenSymbol)
+		decimals = append(decimals, t.TokenDecimals)
+	}
+
+	data.Senders = strings.Join(senders, "\n")
+	data.Recipients = strings.Join(recipients, "\n")
+	data.TransferValues = strings.Join(transferValues, "\n")
+	data.Addresses = strings.Join(addresses, "\n")
+	data.TxHashes = strings.Join(txHashes, "\n")
+	data.Dates = strings.Join(dates, "\n")
+	data.Symbols = strings.Join(symbols, "\n")
+	data.Decimals = strings.Join(decimals, "\n")
+
+	return data
+}
+
+// GetTransferData retrieves and matches transfer data
+// returns a formatted string of the full transaction/statement
+func GetTransferData(ctx context.Context, db storage.PrefixDb, publicKey string, index int) (string, error) {
+	keys := []string{"txfrom", "txto", "txval", "txaddr", "txhash", "txdate", "txsym"}
+	data := make(map[string]string)
+
+	for _, key := range keys {
+		value, err := db.Get(ctx, []byte(key))
+		if err != nil {
+			return "", fmt.Errorf("failed to get %s: %v", key, err)
+		}
+		data[key] = string(value)
+	}
+
+	// Split the data
+	senders := strings.Split(string(data["txfrom"]), "\n")
+	recipients := strings.Split(string(data["txto"]), "\n")
+	values := strings.Split(string(data["txval"]), "\n")
+	addresses := strings.Split(string(data["txaddr"]), "\n")
+	hashes := strings.Split(string(data["txhash"]), "\n")
+	dates := strings.Split(string(data["txdate"]), "\n")
+	syms := strings.Split(string(data["txsym"]), "\n")
+
+	// Adjust for 0-based indexing
+	i := index - 1
+	transactionType := "received"
+	party := fmt.Sprintf("from: %s", strings.TrimSpace(senders[i]))
+	if strings.TrimSpace(senders[i]) == publicKey {
+		transactionType = "sent"
+		party = fmt.Sprintf("to: %s", strings.TrimSpace(recipients[i]))
+	}
+
+	formattedDate := formatDate(strings.TrimSpace(dates[i]))
+
+	// Build the full transaction detail
+	detail := fmt.Sprintf(
+		"%s %s %s\n%s\ncontract address: %s\ntxhash: %s\ndate: %s",
+		transactionType,
+		strings.TrimSpace(values[i]),
+		strings.TrimSpace(syms[i]),
+		party,
+		strings.TrimSpace(addresses[i]),
+		strings.TrimSpace(hashes[i]),
+		formattedDate,
+	)
+
+	return detail, nil
+}
+
+// Helper function to format date in desired output
+func formatDate(dateStr string) string {
+	fmt.Println(dateStr)
+	parsedDate, err := time.Parse("2006-01-02 15:04:05 -0700 MST", dateStr)
+	if err != nil {
+		fmt.Println("Error parsing date:", err)
+		return ""
+	}
+	return parsedDate.Format("2006-01-02 03:04:05 PM")
+}

internal/handlers/handlerservice.go

@@ -118,7 +118,9 @@ func (ls *LocalHandlerService) GetHandler(accountService remote.AccountServiceIn
 	ls.DbRs.AddLocalFunc("reset_others_pin", ussdHandlers.ResetOthersPin)
 	ls.DbRs.AddLocalFunc("save_others_temporary_pin", ussdHandlers.SaveOthersTemporaryPin)
 	ls.DbRs.AddLocalFunc("get_current_profile_info", ussdHandlers.GetCurrentProfileInfo)
-	ls.DbRs.AddLocalFunc("get_transactions", ussdHandlers.GetTransactions)
+	ls.DbRs.AddLocalFunc("check_transactions", ussdHandlers.CheckTransactions)
+	ls.DbRs.AddLocalFunc("get_transactions", ussdHandlers.GetTransactionsList)
+	ls.DbRs.AddLocalFunc("view_statement", ussdHandlers.ViewTransactionStatement)
 
 	return ussdHandlers, nil
 }

internal/handlers/ussd/menuhandler.go

@@ -1634,11 +1634,171 @@ func (h *Handlers) GetVoucherDetails(ctx context.Context, sym string, input []by
 	return res, nil
 }
 
-// GetTransactions retrieves the transactions from the API using the "PublicKey"
-func (h *Handlers) GetTransactions(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+// CheckTransactions retrieves the transactions from the API using the "PublicKey" and stores to prefixDb
+func (h *Handlers) CheckTransactions(ctx context.Context, sym string, input []byte) (resource.Result, error) {
 	var res resource.Result
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
 
-	res.Content = "Transaction list"
+	flag_no_transfers, _ := h.flagManager.GetFlag("flag_no_transfers")
+	flag_api_error, _ := h.flagManager.GetFlag("flag_api_error")
+
+	store := h.userdataStore
+	publicKey, err := store.ReadEntry(ctx, sessionId, common.DATA_PUBLIC_KEY)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", common.DATA_PUBLIC_KEY, "error", err)
+		return res, err
+	}
+
+	// Fetch transactions from the API using the public key
+	transactionsResp, err := h.accountService.FetchTransactions(ctx, string(publicKey))
+	if err != nil {
+		res.FlagSet = append(res.FlagSet, flag_api_error)
+		logg.ErrorCtxf(ctx, "failed on FetchTransactions", "error", err)
+		return res, err
+	}
+
+	// Return if there are no transactions
+	if len(transactionsResp) == 0 {
+		res.FlagSet = append(res.FlagSet, flag_no_transfers)
+		return res, nil
+	}
+
+	data := common.ProcessTransfers(transactionsResp)
+
+	// Store all transaction data
+	dataMap := map[string]string{
+		"txfrom": data.Senders,
+		"txto":   data.Recipients,
+		"txval":  data.TransferValues,
+		"txaddr": data.Addresses,
+		"txhash": data.TxHashes,
+		"txdate": data.Dates,
+		"txsym":  data.Symbols,
+		"txdeci": data.Decimals,
+	}
+
+	for key, value := range dataMap {
+		if err := h.prefixDb.Put(ctx, []byte(key), []byte(value)); err != nil {
+			logg.ErrorCtxf(ctx, "failed to write to prefixDb", "error", err)
+			return res, err
+		}
+	}
+
+	res.FlagReset = append(res.FlagReset, flag_no_transfers)
+
+	return res, nil
+}
+
+// GetTransactionsList fetches the list of transactions and formats them
+func (h *Handlers) GetTransactionsList(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+	store := h.userdataStore
+	publicKey, err := store.ReadEntry(ctx, sessionId, common.DATA_PUBLIC_KEY)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", common.DATA_PUBLIC_KEY, "error", err)
+		return res, err
+	}
+
+	// Read transactions from the store and format them
+	TransactionSenders, err := h.prefixDb.Get(ctx, []byte("txfrom"))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read the TransactionSenders from prefixDb", "error", err)
+		return res, err
+	}
+	TransactionSyms, err := h.prefixDb.Get(ctx, []byte("txsym"))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read the TransactionSyms from prefixDb", "error", err)
+		return res, err
+	}
+	TransactionValues, err := h.prefixDb.Get(ctx, []byte("txval"))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read the TransactionValues from prefixDb", "error", err)
+		return res, err
+	}
+	TransactionDates, err := h.prefixDb.Get(ctx, []byte("txdate"))
+	if err != nil {
+		logg.ErrorCtxf(ctx, "Failed to read the TransactionDates from prefixDb", "error", err)
+		return res, err
+	}
+
+	// Parse the data
+	senders := strings.Split(string(TransactionSenders), "\n")
+	syms := strings.Split(string(TransactionSyms), "\n")
+	values := strings.Split(string(TransactionValues), "\n")
+	dates := strings.Split(string(TransactionDates), "\n")
+
+	var formattedTransactions []string
+	for i := 0; i < len(senders); i++ {
+		sender := strings.TrimSpace(senders[i])
+		sym := strings.TrimSpace(syms[i])
+		value := strings.TrimSpace(values[i])
+		date := strings.Split(strings.TrimSpace(dates[i]), " ")[0]
+
+		status := "received"
+		if sender == string(publicKey) {
+			status = "sent"
+		}
+
+		formattedTransactions = append(formattedTransactions, fmt.Sprintf("%d:%s %s %s %s", i+1, status, value, sym, date))
+	}
+
+	res.Content = strings.Join(formattedTransactions, "\n")
+
+	return res, nil
+}
+
+// ViewTransactionStatement retrieves the token holding and balance from the subprefixDB
+// and displays it to the user for them to select it
+func (h *Handlers) ViewTransactionStatement(ctx context.Context, sym string, input []byte) (resource.Result, error) {
+	var res resource.Result
+	sessionId, ok := ctx.Value("SessionId").(string)
+	if !ok {
+		return res, fmt.Errorf("missing session")
+	}
+	store := h.userdataStore
+	publicKey, err := store.ReadEntry(ctx, sessionId, common.DATA_PUBLIC_KEY)
+	if err != nil {
+		logg.ErrorCtxf(ctx, "failed to read publicKey entry with", "key", common.DATA_PUBLIC_KEY, "error", err)
+		return res, err
+	}
+
+	flag_incorrect_statement, _ := h.flagManager.GetFlag("flag_incorrect_statement")
+
+	inputStr := string(input)
+	if inputStr == "0" || inputStr == "99" || inputStr == "11" || inputStr == "22" {
+		res.FlagReset = append(res.FlagReset, flag_incorrect_statement)
+		return res, nil
+	}
+
+	// Convert input string to integer
+	index, err := strconv.Atoi(strings.TrimSpace(inputStr))
+	if err != nil {
+		return res, fmt.Errorf("invalid input: must be a number between 1 and 10")
+	}
+
+	if index < 1 || index > 10 {
+		return res, fmt.Errorf("invalid input: index must be between 1 and 10")
+	}
+
+	statement, err := common.GetTransferData(ctx, h.prefixDb, string(publicKey), index)
+	if err != nil {
+		return res, fmt.Errorf("failed to retrieve transfer data: %v", err)
+	}
+
+	if statement == "" {
+		res.FlagSet = append(res.FlagSet, flag_incorrect_statement)
+		return res, nil
+	}
+
+	res.FlagReset = append(res.FlagReset, flag_incorrect_statement)
+	res.Content = statement
 
 	return res, nil
 }