185 lines
4.9 KiB
Go
185 lines
4.9 KiB
Go
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package utils
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import (
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"fmt"
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"strings"
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"context"
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"git.grassecon.net/urdt/ussd/internal/storage"
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)
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// VoucherMetadata helps organize voucher data fields
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type VoucherMetadata struct {
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Symbol string
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Balance string
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Decimal string
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Address string
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}
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// ProcessVouchers converts holdings into formatted strings
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func ProcessVouchers(holdings []struct {
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ContractAddress string `json:"contractAddress"`
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TokenSymbol string `json:"tokenSymbol"`
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TokenDecimals string `json:"tokenDecimals"`
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Balance string `json:"balance"`
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}) VoucherMetadata {
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var data VoucherMetadata
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var symbols, balances, decimals, addresses []string
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for i, h := range holdings {
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symbols = append(symbols, fmt.Sprintf("%d:%s", i+1, h.TokenSymbol))
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balances = append(balances, fmt.Sprintf("%d:%s", i+1, h.Balance))
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decimals = append(decimals, fmt.Sprintf("%d:%s", i+1, h.TokenDecimals))
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addresses = append(addresses, fmt.Sprintf("%d:%s", i+1, h.ContractAddress))
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}
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data.Symbol = strings.Join(symbols, "\n")
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data.Balance = strings.Join(balances, "\n")
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data.Decimal = strings.Join(decimals, "\n")
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data.Address = strings.Join(addresses, "\n")
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return data
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}
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// GetVoucherData retrieves and matches voucher data
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func GetVoucherData(ctx context.Context, db storage.PrefixDb, input string) (*VoucherMetadata, error) {
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keys := []string{"sym", "bal", "deci", "addr"}
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data := make(map[string]string)
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for _, key := range keys {
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value, err := db.Get(ctx, []byte(key))
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if err != nil {
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return nil, fmt.Errorf("failed to get %s: %v", key, err)
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}
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data[key] = string(value)
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}
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symbol, balance, decimal, address := MatchVoucher(input,
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data["sym"],
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data["bal"],
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data["deci"],
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data["addr"])
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if symbol == "" {
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return nil, nil
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}
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return &VoucherMetadata{
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Symbol: symbol,
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Balance: balance,
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Decimal: decimal,
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Address: address,
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}, nil
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}
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// MatchVoucher finds the matching voucher symbol, balance, decimals and contract address based on the input.
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func MatchVoucher(input, symbols, balances, decimals, addresses string) (symbol, balance, decimal, address string) {
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symList := strings.Split(symbols, "\n")
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balList := strings.Split(balances, "\n")
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decList := strings.Split(decimals, "\n")
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addrList := strings.Split(addresses, "\n")
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for i, sym := range symList {
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parts := strings.SplitN(sym, ":", 2)
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if len(parts) != 2 {
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continue
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}
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if input == parts[0] || strings.EqualFold(input, parts[1]) {
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symbol = parts[1]
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if i < len(balList) {
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balance = strings.SplitN(balList[i], ":", 2)[1]
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}
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if i < len(decList) {
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decimal = strings.SplitN(decList[i], ":", 2)[1]
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}
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if i < len(addrList) {
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address = strings.SplitN(addrList[i], ":", 2)[1]
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}
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break
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}
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}
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return
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}
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// StoreTemporaryVoucher saves voucher metadata as temporary entries in the DataStore.
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func StoreTemporaryVoucher(ctx context.Context, store DataStore, sessionId string, data *VoucherMetadata) error {
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entries := map[DataTyp][]byte{
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DATA_TEMPORARY_SYM: []byte(data.Symbol),
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DATA_TEMPORARY_BAL: []byte(data.Balance),
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DATA_TEMPORARY_DECIMAL: []byte(data.Decimal),
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DATA_TEMPORARY_ADDRESS: []byte(data.Address),
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}
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for key, value := range entries {
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if err := store.WriteEntry(ctx, sessionId, key, value); err != nil {
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return err
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}
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}
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return nil
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}
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// GetTemporaryVoucherData retrieves temporary voucher metadata from the DataStore.
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func GetTemporaryVoucherData(ctx context.Context, store DataStore, sessionId string) (*VoucherMetadata, error) {
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keys := []DataTyp{
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DATA_TEMPORARY_SYM,
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DATA_TEMPORARY_BAL,
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DATA_TEMPORARY_DECIMAL,
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DATA_TEMPORARY_ADDRESS,
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}
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data := &VoucherMetadata{}
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values := make([][]byte, len(keys))
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for i, key := range keys {
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value, err := store.ReadEntry(ctx, sessionId, key)
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if err != nil {
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return nil, err
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}
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values[i] = value
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}
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data.Symbol = string(values[0])
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data.Balance = string(values[1])
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data.Decimal = string(values[2])
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data.Address = string(values[3])
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return data, nil
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}
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// UpdateVoucherData sets the active voucher data and clears the temporary voucher data in the DataStore.
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func UpdateVoucherData(ctx context.Context, store DataStore, sessionId string, data *VoucherMetadata) error {
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// Active voucher data entries
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activeEntries := map[DataTyp][]byte{
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DATA_ACTIVE_SYM: []byte(data.Symbol),
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DATA_ACTIVE_BAL: []byte(data.Balance),
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DATA_ACTIVE_DECIMAL: []byte(data.Decimal),
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DATA_ACTIVE_ADDRESS: []byte(data.Address),
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}
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// Clear temporary voucher data entries
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tempEntries := map[DataTyp][]byte{
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DATA_TEMPORARY_SYM: []byte(""),
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DATA_TEMPORARY_BAL: []byte(""),
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DATA_TEMPORARY_DECIMAL: []byte(""),
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DATA_TEMPORARY_ADDRESS: []byte(""),
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}
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// Write active data
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for key, value := range activeEntries {
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if err := store.WriteEntry(ctx, sessionId, key, value); err != nil {
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return err
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}
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}
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// Clear temporary data
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for key, value := range tempEntries {
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if err := store.WriteEntry(ctx, sessionId, key, value); err != nil {
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return err
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}
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}
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return nil
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}
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