96 lines
2.1 KiB
Go
96 lines
2.1 KiB
Go
package main
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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"time"
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)
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type config struct {
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ServerAddr string
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FrontendOrigin string
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ZarinHubEndpoint string
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ZarinHubAuthEndpoint string
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ZarinHubUsername string
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ZarinHubPassword string
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ZarinHubTimeout time.Duration
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ZarinHubRetries int
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DatabasePath string
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}
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func loadConfig() (config, error) {
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return readConfig(os.Getenv)
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}
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func readConfig(getenv func(string) string) (config, error) {
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username := strings.TrimSpace(getenv("ZARINHUB_API_USERNAME"))
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if username == "" {
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return config{}, fmt.Errorf("ZARINHUB_API_USERNAME is required")
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}
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password := strings.TrimSpace(getenv("ZARINHUB_API_PASSWORD"))
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if password == "" {
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return config{}, fmt.Errorf("ZARINHUB_API_PASSWORD is required")
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}
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timeoutText := valueOrDefault(
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getenv("ZARINHUB_TIMEOUT"),
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"5s",
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)
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timeout, err := time.ParseDuration(timeoutText)
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if err != nil || timeout <= 0 {
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return config{}, fmt.Errorf(
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"ZARINHUB_TIMEOUT must be a positive duration",
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)
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}
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retriesText := valueOrDefault(
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getenv("ZARINHUB_RETRIES"),
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"2",
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)
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retries, err := strconv.Atoi(retriesText)
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if err != nil || retries < 0 {
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return config{}, fmt.Errorf(
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"ZARINHUB_RETRIES must be a non-negative integer",
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)
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}
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return config{
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ServerAddr: valueOrDefault(
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getenv("SERVER_ADDR"),
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"127.0.0.1:8080",
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),
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FrontendOrigin: valueOrDefault(
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getenv("FRONTEND_ORIGIN"),
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"http://127.0.0.1:3000",
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),
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ZarinHubEndpoint: valueOrDefault(
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getenv("ZARINHUB_ENDPOINT"),
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"https://zarin-hub.com/api/v5/KYC/CardToIban",
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),
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ZarinHubAuthEndpoint: valueOrDefault(
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getenv("ZARINHUB_AUTH_ENDPOINT"),
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"https://zarin-hub.com/api/v5/Authentication/GetToken",
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),
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ZarinHubUsername: username,
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ZarinHubPassword: password,
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ZarinHubTimeout: timeout,
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ZarinHubRetries: retries,
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DatabasePath: valueOrDefault(
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getenv("DATABASE_PATH"),
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"./card-to-iban.db",
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),
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}, nil
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}
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func valueOrDefault(value string, fallback string) string {
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if strings.TrimSpace(value) == "" {
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return fallback
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}
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return strings.TrimSpace(value)
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}
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