package fuiou

import (
	"fmt"
	"time"

	"go.uber.org/zap"
)

// PreCreate 主扫统一下单（C扫B，生成用户扫码支付的二维码）。
// orderType: 订单类型，WECHAT=微信主扫、ALIPAY=支付宝主扫。
// reservedExpireMinute: 订单有效期分钟（reserved 字段，不参与签名）。
func (c *Client) PreCreate(orderNo, amount, goodsDesc, termIP, orderType, reservedExpireMinute string) (*PreCreateResponse, error) {
	req := &PreCreateRequest{
		Version:              "1",
		InsCd:                c.InsCd,
		MchntCd:              c.MchntCd,
		TermId:               c.TermId,
		RandomStr:            generateRandomStr(),
		OrderType:            orderType,
		MchntOrderNo:         orderNo,
		OrderAmt:             amount,
		GoodsDesc:            goodsDesc,
		TermIp:               termIP,
		TxnBeginTs:           time.Now().Format("20060102150405"),
		NotifyUrl:            c.NotifyURL,
		ReservedExpireMinute: reservedExpireMinute,
	}

	sign, err := c.Sign(req)
	if err != nil {
		return nil, fmt.Errorf("签名失败: %w", err)
	}
	req.Sign = sign

	var resp PreCreateResponse
	if err := c.DoRequest("/preCreate", req, &resp); err != nil {
		return nil, fmt.Errorf("请求富友失败: %w", err)
	}

	if resp.ResultCode != "000000" {
		c.logger.Error("富友主扫下单失败",
			zap.String("order_no", orderNo),
			zap.String("result_code", resp.ResultCode),
			zap.String("result_msg", resp.ResultMsg),
		)
		return nil, fmt.Errorf("富友主扫下单失败: %s", resp.ResultMsg)
	}

	c.logger.Info("富友主扫下单成功",
		zap.String("order_no", orderNo),
		zap.String("order_type", orderType),
	)

	return &resp, nil
}

// CommonQuery 主动查询订单状态。
// orderType: 订单类型，须与下单时一致。
func (c *Client) CommonQuery(orderNo, orderType string) (*CommonQueryResponse, error) {
	req := &CommonQueryRequest{
		Version:      "1",
		InsCd:        c.InsCd,
		MchntCd:      c.MchntCd,
		TermId:       c.TermId,
		RandomStr:    generateRandomStr(),
		OrderType:    orderType,
		MchntOrderNo: orderNo,
	}

	sign, err := c.Sign(req)
	if err != nil {
		return nil, fmt.Errorf("签名失败: %w", err)
	}
	req.Sign = sign

	var resp CommonQueryResponse
	if err := c.DoRequest("/commonQuery", req, &resp); err != nil {
		return nil, fmt.Errorf("请求富友失败: %w", err)
	}

	if resp.ResultCode != "000000" {
		c.logger.Error("富友订单查询失败",
			zap.String("order_no", orderNo),
			zap.String("result_code", resp.ResultCode),
			zap.String("result_msg", resp.ResultMsg),
		)
		return nil, fmt.Errorf("富友订单查询失败: %s", resp.ResultMsg)
	}

	return &resp, nil
}