package model

import (
	"regexp"
	"strings"

	"github.com/gogf/gf/v2/errors/gerror"
)

type AlipayConfig struct {
	AppId           string `json:"appId"           yaml:"appId"`
	PrivateKey      string `json:"privateKey"      yaml:"privateKey"`
	AlipayPublicKey string `json:"alipayPublicKey" yaml:"alipayPublicKey"`
	NotifyUrl       string `json:"notifyUrl"       yaml:"notifyUrl"`
	ReturnUrl       string `json:"returnUrl"       yaml:"returnUrl"`
	IsProduction    bool   `json:"isProduction"    yaml:"isProduction"`
}

type AlipayPayInput struct {
	OutTradeNo   string `json:"outTradeNo"   dc:"商户订单号"`
	Subject      string `json:"subject"      dc:"订单标题" v:"required#订单标题不能为空"`
	TotalAmount  string `json:"totalAmount"  dc:"支付金额（元）" v:"required#支付金额不能为空"`
	PayType      string `json:"payType"      dc:"支付类型：page 电脑网站支付，wap 手机网站支付" d:"page"`
	BusinessType string `json:"businessType" dc:"业务类型：balanceRecharge 余额充值"`
}

type AlipayPayOutput struct {
	OutTradeNo string `json:"outTradeNo" dc:"商户订单号"`
	PayUrl     string `json:"payUrl"     dc:"支付链接"`
}

type AlipayNotifyInput struct{}

type AlipayNotifyOutput struct{}

type AlipayReturnInput struct {
	RefundAmount string `json:"refundAmount" dc:"退款金额（元）" `
	OutTradeNo   string `json:"outTradeNo" dc:"商户订单号"`
	TradeNo      string `json:"tradeNo"      dc:"支付宝交易号" `
}

type AlipayReturnOutput struct {
	OutTradeNo  string `json:"outTradeNo"  dc:"商户订单号"`
	TradeNo     string `json:"tradeNo"     dc:"支付宝交易号"`
	TotalAmount string `json:"totalAmount" dc:"交易金额"`
	Message     string `json:"message"     dc:"消息"`
}

type AlipayTradeQueryInput struct {
	OutTradeNo string `json:"outTradeNo" dc:"商户订单号"`
	TradeNo    string `json:"tradeNo"    dc:"支付宝交易号"`
}

type AlipayTradeQueryOutput struct {
	OutTradeNo   string `json:"outTradeNo"   dc:"商户订单号"`
	TradeNo      string `json:"tradeNo"      dc:"支付宝交易号"`
	TradeStatus  string `json:"tradeStatus"  dc:"交易状态"`
	TotalAmount  string `json:"totalAmount"  dc:"交易金额"`
	BuyerLogonId string `json:"buyerLogonId" dc:"买家支付宝账号"`
	BuyerUserId  string `json:"buyerUserId"  dc:"买家支付宝用户ID"`
	BuyerOpenId  string `json:"buyerOpenId"  dc:"买家支付宝OpenID"`
	SendPayDate  string `json:"sendPayDate"  dc:"交易付款时间"`
}

type AlipayRefundInput struct {
	OutRequestNo string `json:"outRequestNo" dc:"退款请求号" v:"required#退款请求号不能为空"`
	RefundReason string `json:"refundReason" dc:"退款原因"`
	OutTradeNo   string `json:"outTradeNo"   dc:"商户订单号"`
	TradeNo      string `json:"tradeNo"      dc:"支付宝交易号"`
	RefundAmount string `json:"refundAmount" dc:"退款金额（元）" v:"required#退款金额不能为空"`
}

type AlipayRefundOutput struct {
	TradeNo      string `json:"tradeNo"      dc:"支付宝交易号"`
	OutTradeNo   string `json:"outTradeNo"   dc:"商户订单号"`
	BuyerLogonId string `json:"buyerLogonId" dc:"买家支付宝账号"`
	RefundFee    string `json:"refundFee"    dc:"退款总金额（元）"`
}

var alipayRefundAmountPattern = regexp.MustCompile(`^(0|[1-9]\d{0,13})(\.\d{1,2})?$`)

// AlipayRefundModel is the validated data sent to the Alipay refund SDK.
type AlipayRefundModel struct {
	OutTradeNo   string
	TradeNo      string
	OutRequestNo string
	RefundAmount string
	RefundReason string
}

func (in *AlipayRefundInput) Normalize() (*AlipayRefundModel, error) {
	if in == nil {
		return nil, gerror.New("退款参数不能为空")
	}
	refund := &AlipayRefundModel{
		OutTradeNo:   strings.TrimSpace(in.OutTradeNo),
		TradeNo:      strings.TrimSpace(in.TradeNo),
		OutRequestNo: strings.TrimSpace(in.OutRequestNo),
		RefundAmount: strings.TrimSpace(in.RefundAmount),
		RefundReason: strings.TrimSpace(in.RefundReason),
	}
	if refund.OutTradeNo == "" && refund.TradeNo == "" {
		return nil, gerror.New("商户订单号和支付宝交易号不能同时为空")
	}
	if len(refund.OutTradeNo) > 64 || len(refund.TradeNo) > 64 {
		return nil, gerror.New("商户订单号或支付宝交易号长度不能超过64位")
	}
	if !alipayRefundAmountPattern.MatchString(refund.RefundAmount) || refund.RefundAmount == "0" || strings.HasPrefix(refund.RefundAmount, "0.") && strings.Trim(refund.RefundAmount, "0.") == "" {
		return nil, gerror.New("退款金额格式错误，金额必须大于0且最多两位小数")
	}
	if refund.OutRequestNo == "" {
		refund.OutRequestNo = refund.OutTradeNo
		if refund.OutRequestNo == "" {
			refund.OutRequestNo = refund.TradeNo
		}
	}
	return refund, nil
}