package config import ( "errors" "fmt" "log" "os" "strconv" "github.com/joho/godotenv" "github.com/timetracker/backend/internal/models" "gorm.io/gorm/logger" ) // Config represents the application configuration type Config struct { Database models.DatabaseConfig } // LoadConfig loads configuration from environment variables and .env file func LoadConfig() (*Config, error) { // Try loading .env file, but don't fail if it doesn't exist _ = godotenv.Load() cfg := &Config{ Database: models.DefaultDatabaseConfig(), } // Load database configuration if err := loadDatabaseConfig(cfg); err != nil { return nil, fmt.Errorf("failed to load database config: %w", err) } return cfg, nil } // loadDatabaseConfig loads database configuration from environment func loadDatabaseConfig(cfg *Config) error { // Required fields cfg.Database.Host = getEnv("DB_HOST", cfg.Database.Host) cfg.Database.User = getEnv("DB_USER", cfg.Database.User) cfg.Database.Password = getEnv("DB_PASSWORD", cfg.Database.Password) cfg.Database.DBName = getEnv("DB_NAME", cfg.Database.DBName) cfg.Database.SSLMode = getEnv("DB_SSLMODE", cfg.Database.SSLMode) // Optional fields with parsing if port := getEnv("DB_PORT", ""); port != "" { portInt, err := strconv.Atoi(port) if err != nil || portInt <= 0 { return errors.New("invalid DB_PORT value") } cfg.Database.Port = portInt } // Log level based on environment if os.Getenv("ENVIRONMENT") == "production" { cfg.Database.LogLevel = logger.Error } else { cfg.Database.LogLevel = logger.Info } // Validate required fields if cfg.Database.Host == "" || cfg.Database.User == "" || cfg.Database.Password == "" || cfg.Database.DBName == "" { return errors.New("missing required database configuration") } return nil } // getEnv gets an environment variable with fallback func getEnv(key, fallback string) string { if value, exists := os.LookupEnv(key); exists { return value } return fallback } // MustLoadConfig loads configuration or panics on failure func MustLoadConfig() *Config { cfg, err := LoadConfig() if err != nil { log.Fatalf("Failed to load config: %v", err) } return cfg }