Add full shop application: Go backend, PostgreSQL, Docker, Caddy and admin panel.

internal/config/config.go

@@ -0,0 +1,37 @@
+package config
+
+import (
+	"crypto/rand"
+	"encoding/hex"
+	"log"
+	"os"
+)
+
+type Config struct {
+	AdminEmail    string
+	AdminPassword string
+	SessionSecret string
+}
+
+func Load() Config {
+	cfg := Config{
+		AdminEmail:    os.Getenv("ADMIN_EMAIL"),
+		AdminPassword: os.Getenv("ADMIN_PASSWORD"),
+		SessionSecret: os.Getenv("SESSION_SECRET"),
+	}
+
+	if cfg.SessionSecret == "" {
+		cfg.SessionSecret = randomSecret()
+		log.Println("warning: SESSION_SECRET not set, using random value (sessions reset on restart)")
+	}
+
+	return cfg
+}
+
+func randomSecret() string {
+	b := make([]byte, 32)
+	if _, err := rand.Read(b); err != nil {
+		panic(err)
+	}
+	return hex.EncodeToString(b)
+}