package config

import (
	"os"
)

// Config 应用配置
type Config struct {
	ServerPort          string
	AccessKeyId         string
	AccessKeySecret     string
	RegionId            string
	Endpoint            string
	BasePath            string
	DefaultPurchaserId  string
	CallbackURL         string
}

// LoadConfig 从环境变量加载配置
func LoadConfig() *Config {
	return &Config{
		ServerPort:         getEnv("SERVER_PORT", "8080"),
		AccessKeyId:        getEnv("LINKEDMALL_AK", ""),
		AccessKeySecret:    getEnv("LINKEDMALL_SK", ""),
		RegionId:           getEnv("LINKEDMALL_REGION_ID", "cn-zhangjiakou"),
		Endpoint:           getEnv("LINKEDMALL_ENDPOINT", "linkedmall.cn-zhangjiakou.aliyuncs.com"),
		BasePath:           getEnv("LINKEDMALL_BASE_PATH", "/opensaas-s2b/opensaas-s2b-biz-trade/v2"),
		DefaultPurchaserId: getEnv("LINKEDMALL_PURCHASER_ID", ""),
		CallbackURL:        getEnv("LINKEDMALL_CALLBACK_URL", ""),
	}
}

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