feat: initial implementation of container management platform

internal/config/config.go

@@ -0,0 +1,84 @@
+package config
+
+import (
+	"os"
+	"strconv"
+)
+
+type Config struct {
+	Environment string
+	Port        string
+	DatabaseURL string
+	RedisURL    string
+	JWTSecret   string
+	CORS        CORSConfig
+	Proxmox     ProxmoxConfig
+}
+
+type CORSConfig struct {
+	AllowedOrigins []string
+}
+
+type ProxmoxConfig struct {
+	BaseURL  string
+	Username string
+	Password string
+	TokenID  string
+	Token    string
+}
+
+func Load() *Config {
+	cfg := &Config{
+		Environment: getEnv("ENVIRONMENT", "development"),
+		Port:        getEnv("PORT", "8080"),
+		DatabaseURL: getEnv("DATABASE_URL", "postgres://containr:password@localhost:5432/containr?sslmode=disable"),
+		RedisURL:    getEnv("REDIS_URL", "redis://localhost:6379"),
+		JWTSecret:   getEnv("JWT_SECRET", "your-secret-key-change-in-production"),
+		CORS: CORSConfig{
+			AllowedOrigins: []string{
+				"http://localhost:3000", // Vite dev server
+				"http://localhost:5173", // Alternative Vite port
+			},
+		},
+		Proxmox: ProxmoxConfig{
+			BaseURL:  getEnv("PROXMOX_BASE_URL", ""),
+			Username: getEnv("PROXMOX_USERNAME", ""),
+			Password: getEnv("PROXMOX_PASSWORD", ""),
+			TokenID:  getEnv("PROXMOX_TOKEN_ID", ""),
+			Token:    getEnv("PROXMOX_TOKEN", ""),
+		},
+	}
+
+	// Add production origins if in production
+	if cfg.Environment == "production" {
+		cfg.CORS.AllowedOrigins = append(cfg.CORS.AllowedOrigins,
+			getEnv("FRONTEND_URL", "https://your-domain.com"))
+	}
+
+	return cfg
+}
+
+func getEnv(key, defaultValue string) string {
+	if value := os.Getenv(key); value != "" {
+		return value
+	}
+	return defaultValue
+}
+
+func getEnvAsBool(key string, defaultValue bool) bool {
+	if value := os.Getenv(key); value != "" {
+		if parsed, err := strconv.ParseBool(value); err == nil {
+			return parsed
+		}
+	}
+	return defaultValue
+}
+
+func getEnvAsInt(key string, defaultValue int) int {
+	if value := os.Getenv(key); value != "" {
+		if parsed, err := strconv.Atoi(value); err == nil {
+			return parsed
+		}
+	}
+	return defaultValue
+}