package config

import (
	"os"
	"strconv"
)

type Config struct {
	Database DatabaseConfig
	Server   ServerConfig
	App      AppConfig
}

type DatabaseConfig struct {
	Driver string
	DSN    string
}

type ServerConfig struct {
	Port int
	Mode string
}

type AppConfig struct {
	Name        string
	Description string
	Author      string
	Theme       string
}

func Load() *Config {
	port, _ := strconv.Atoi(getEnv("SERVER_PORT", "8080"))

	return &Config{
		Database: DatabaseConfig{
			Driver: getEnv("DB_DRIVER", "sqlite"),
			DSN:    getEnv("DB_DSN", "goblog.db"),
		},
		Server: ServerConfig{
			Port: port,
			Mode: getEnv("GIN_MODE", "debug"),
		},
		App: AppConfig{
			Name:        getEnv("APP_NAME", "GoBlog"),
			Description: getEnv("APP_DESC", "一个简洁的个人博客"),
			Author:      getEnv("APP_AUTHOR", "Admin"),
			Theme:       getEnv("APP_THEME", "default"),
		},
	}
}

func getEnv(key, defaultValue string) string {
	if value := os.Getenv(key); value != "" {
		return value
	}
	return defaultValue
}