feat: add outbound proxy support for Tripay API requests

config/config.go

@@ -14,6 +14,7 @@ type Config struct {
 	TripayAPIKey         string
 	TripayPrivateKey     string
 	TripayIsProduction   bool
+	TripayProxyURL       string
 	AppPort              int
 	Port                 string // Hugging Face Spaces port (default 7860)
 	AppBaseURL           string
@@ -40,6 +41,7 @@ func LoadConfig() {
 		TripayAPIKey:         getEnv("TRIPAY_API_KEY", ""),
 		TripayPrivateKey:     getEnv("TRIPAY_PRIVATE_KEY", ""),
 		TripayIsProduction:   getEnvBool("TRIPAY_IS_PRODUCTION", true),
+		TripayProxyURL:       getEnv("TRIPAY_PROXY_URL", ""),
 		AppPort:              getEnvInt("APP_PORT", 8003),
 		Port:                 getEnv("PORT", "7860"), // Default port Hugging Face Spaces
 		AppBaseURL:           getEnv("APP_BASE_URL", "http://localhost:8003"),

services/tripay.go

@@ -10,6 +10,7 @@ import (
 	"io"
 	"log"
 	"net/http"
+	"net/url"
 	"time"
 
 	"service-warungpos-go/config"
@@ -116,7 +117,21 @@ func CreateTripayTransaction(
 	apiURL := getTripayBaseURL() + "/transaction/create"
 	log.Printf("[TRIPAY] Mengirim request tagihan ke: %s", apiURL)
 
-	client := &http.Client{Timeout: 15 * time.Second}
+	transport := &http.Transport{}
+	if config.GlobalConfig.TripayProxyURL != "" {
+		proxyURL, err := url.Parse(config.GlobalConfig.TripayProxyURL)
+		if err == nil {
+			transport.Proxy = http.ProxyURL(proxyURL)
+			log.Printf("[TRIPAY] Menggunakan proxy outbound: %s", config.GlobalConfig.TripayProxyURL)
+		} else {
+			log.Printf("[TRIPAY] Gagal memproses format proxy URL: %v", err)
+		}
+	}
+
+	client := &http.Client{
+		Transport: transport,
+		Timeout:   15 * time.Second,
+	}
 	req, err := http.NewRequest("POST", apiURL, bytes.NewBuffer(jsonBytes))
 	if err != nil {
 		return nil, fmt.Errorf("gagal membuat http request: %v", err)