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package main
import (
"fmt"
"os"
)
const DISABLE_DELAYS = false
const C2EC_BASE_URL = "http://localhost:8082"
const C2EC_BANK_BASE_URL = C2EC_BASE_URL + "/c2ec"
const C2EC_BANK_CONFIG_URL = C2EC_BANK_BASE_URL + "/config"
const C2EC_BANK_WITHDRAWAL_STATUS_URL = C2EC_BANK_BASE_URL + "/withdrawal-operation/:wopid"
const C2EC_BANK_WITHDRAWAL_REGISTRATION_URL = C2EC_BANK_BASE_URL + "/withdrawal-operation/:wopid"
const C2EC_BANK_WITHDRAWAL_PAYMENT_URL = C2EC_BANK_BASE_URL + "/withdrawal-operation/:wopid/payment"
// simulates the terminal talking to its backend system and executing the payment.
const PROVIDER_BACKEND_PAYMENT_DELAY_MS = 1000
// simulates the provider client fetching attestation at the providers backend.
const PROVIDER_BACKEND_ATTESTATION_DELAY_MS = 1000
// simulates the user presenting his card to the terminal
const TERMINAL_ACCEPT_CARD_DELAY_MS = 5000
// simulates the user scanning the QR code presented at the terminal
const WALLET_SCAN_QR_CODE_DELAY_MS = 5000
// https://docs.taler.net/core/api-exchange.html#tsref-type-CurrencySpecification
type CurrencySpecification struct {
Name string `json:"name"`
Currency string `json:"currency"`
NumFractionalInputDigits int `json:"num_fractional_input_digits"`
NumFractionalNormalDigits int `json:"num_fractional_normal_digits"`
NumFractionalTrailingZeroDigits int `json:"num_fractional_trailing_zero_digits"`
AltUnitNames string `json:"alt_unit_names"`
}
// https://docs.taler.net/core/api-bank-integration.html#tsref-type-BankIntegrationConfig
type BankIntegrationConfig struct {
Name string `json:"name"`
Version string `json:"version"`
Implementation string `json:"implementation"`
Currency string `json:"currency"`
CurrencySpecification CurrencySpecification `json:"currency_specification"`
}
type SimulatedPhysicalInteraction struct {
Msg string
}
func main() {
if !c2ecAlive() {
fmt.Println("start c2ec first.")
return
}
kill := make(chan error)
toTerminal := make(chan *SimulatedPhysicalInteraction, 10)
toWallet := make(chan *SimulatedPhysicalInteraction, 10)
// start simulated terminal
go Terminal(toTerminal, toWallet, kill)
// start simulated wallet
go Wallet(toWallet, toTerminal, kill)
for err := range kill {
if err == nil {
fmt.Print("simulation successful.")
os.Exit(0)
}
fmt.Println("simulation error: ", err.Error())
os.Exit(1)
}
}
func c2ecAlive() bool {
cfg, status, err := HttpGet(C2EC_BANK_CONFIG_URL, map[string]string{}, NewJsonCodec[BankIntegrationConfig]())
if err != nil || status != 200 {
return false
}
fmt.Println("C2EC-Config:", cfg.Name, cfg.Version, cfg.Currency, cfg.CurrencySpecification.AltUnitNames)
return true
}
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