package biz

import (
	"encoding/json"
	"xy_sh/internal/config"
	"xy_sh/internal/entities"
	"xy_sh/pkg/crypto"
)

// Biz 业务逻辑层
type Biz struct {
	cfg *config.Config
}

// NewBiz 创建业务逻辑实例
func NewBiz(cfg *config.Config) *Biz {
	return &Biz{cfg: cfg}
}

// EncryptResponse 加密响应数据
func (b *Biz) EncryptResponse(data interface{}) (string, error) {
	jsonBytes, err := json.Marshal(data)
	if err != nil {
		return "", err
	}
	return crypto.SM4ECBEncrypt(jsonBytes, b.cfg.SM4Key)
}

// DecryptRequest 解密请求数据
func (b *Biz) DecryptRequest(encryptedData string) ([]byte, error) {
	return crypto.SM4ECBDecrypt(encryptedData, b.cfg.SM4Key)
}

// ProcessOrder 处理下单请求
func (b *Biz) ProcessOrder(req *entities.OrderRequest) (*entities.OrderResponse, error) {
	return &entities.OrderResponse{
		OrderNo:    "HM" + generateOrderNo(),
		Status:     0,
		ExpireTime: "2025-12-31 23:59:59",
	}, nil
}

// ProcessQuery 处理订单查询请求
func (b *Biz) ProcessQuery(req *entities.QueryRequest) (*entities.QueryResponse, error) {
	return &entities.QueryResponse{
		OrderNo: req.OrderNo,
		Status:  0,
	}, nil
}

// ProcessWechatRecharge 处理微信立减金充值请求
func (b *Biz) ProcessWechatRecharge(req *entities.WechatRechargeRequest) (*entities.WechatRechargeResponse, error) {
	return &entities.WechatRechargeResponse{
		OrderNo: req.OrderNo,
		Status:  0,
	}, nil
}

// ProcessCallback 处理回调通知
func (b *Biz) ProcessCallback(req *entities.CallbackRequest) error {
	return nil
}

// generateOrderNo 生成订单号（示例）
func generateOrderNo() string {
	return "0000000000000000"
}