package config

import (
	"os"
)

// Config holds the application configuration
type Config struct {
	DBHost      string
	DBPort      string
	DBUser      string
	DBPassword  string
	DBName      string
	JWTSecret   string
	ServerPort  string
	GinMode     string
}

// Load reads configuration from environment variables with fallbacks
func Load() *Config {
	return &Config{
		DBHost:      getEnv("DB_HOST", "localhost"),
		DBPort:      getEnv("DB_PORT", "5432"),
		DBUser:      getEnv("DB_USER", "celestia"),
		DBPassword:  getEnv("DB_PASSWORD", "celestia_secret"),
		DBName:      getEnv("DB_NAME", "celestia_trace"),
		JWTSecret:   getEnv("JWT_SECRET", "change-me-in-production"),
		ServerPort:  getEnv("SERVER_PORT", "8080"),
		GinMode:     getEnv("GIN_MODE", "release"),
	}
}

func getEnv(key, fallback string) string {
	if value, exists := os.LookupEnv(key); exists {
		return value
	}
	return fallback
}