package handlers

import (
	"platform/web/auth"
	"platform/web/core"
	trade2 "platform/web/domains/trade"
	m "platform/web/models"
	q "platform/web/queries"
	s "platform/web/services"
	"strconv"
	"time"

	"github.com/gofiber/fiber/v2"
	"golang.org/x/crypto/bcrypt"
)

// region /update

type UpdateUserReq struct {
	Username      string `json:"username" validate:"omitempty,min=3,max=20"`
	Email         string `json:"email" validate:"omitempty,email"`
	ContactQQ     string `json:"contact_qq" validate:"omitempty,qq"`
	ContactWechat string `json:"contact_wechat" validate:"omitempty,wechat"`
}

func UpdateUser(c *fiber.Ctx) error {
	// 检查权限
	authCtx, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}

	// 解析请求参数
	req := new(UpdateUserReq)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 更新用户信息
	_, err = q.User.
		Where(q.User.ID.Eq(authCtx.Payload.Id)).
		Updates(m.User{
			Username:      req.Username,
			Email:         req.Email,
			ContactQQ:     req.ContactQQ,
			ContactWechat: req.ContactWechat,
		})
	if err != nil {
		return err
	}

	// 返回结果
	return c.SendStatus(fiber.StatusNoContent)
}

// endregion

// region /update/account

type UpdateAccountReq struct {
	Username string `json:"username" validate:"omitempty,min=3,max=20"`
	Password string `json:"password" validate:"omitempty,min=6,max=20"`
}

func UpdateAccount(c *fiber.Ctx) error {
	// 检查权限
	authCtx, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}

	// 解析请求参数
	req := new(UpdateAccountReq)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 更新用户信息
	_, err = q.User.
		Where(q.User.ID.Eq(authCtx.Payload.Id)).
		Updates(m.User{
			Username: req.Username,
			Password: req.Password,
		})
	if err != nil {
		return err
	}

	// 返回结果
	return c.SendStatus(fiber.StatusNoContent)
}

// endregion

// region /update/password

type UpdatePasswordReq struct {
	Phone    string `json:"phone"`
	Code     string `json:"code"`
	Password string `json:"password"`
}

func UpdatePassword(c *fiber.Ctx) error {
	// 检查权限
	authCtx, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}

	// 解析请求参数
	req := new(UpdatePasswordReq)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 验证手机令牌
	if req.Phone == "" || req.Code == "" {
		return core.NewErr("user", "手机号码和验证码不能为空")
	}
	err = s.Verifier.VerifySms(c.Context(), req.Phone, req.Code)
	if err != nil {
		return err
	}

	// 更新密码
	newHash, err := bcrypt.GenerateFromPassword([]byte(req.Password), bcrypt.DefaultCost)
	if err != nil {
		return err
	}

	_, err = q.User.
		Where(q.User.ID.Eq(authCtx.Payload.Id)).
		UpdateColumn(q.User.Password, newHash)
	if err != nil {
		return err
	}

	// 返回结果
	return c.SendStatus(fiber.StatusNoContent)
}

// endregion

// region /recharge

type RechargePrepareReq struct {
	Amount float64 `json:"amount" validate:"required,min=0.01"`
}

type RechargePrepareResp struct {
	TradeNo string `json:"trade_no"`
	PayURL  string `json:"pay_url"`
}

type RechargeConfirmReq struct {
	TradeNo string `json:"trade_no" validate:"required"`
}

type RechargeConfirmResp struct {
	Status string `json:"status"`
}

// RechargePrepareAlipay 通过支付宝充值
func RechargePrepareAlipay(c *fiber.Ctx) error {
	// 检查权限
	authContext, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}

	// 解析请求参数
	req := new(RechargePrepareReq)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 保存交易信息
	var result *s.TransactionPrepareResult
	err = q.Q.Transaction(func(tx *q.Query) error {
		result, err = s.Transaction.PrepareTransaction(c.Context(), tx, authContext.Payload.Id, &s.TransactionPrepareData{
			Subject:  "账户充值 - " + strconv.FormatFloat(req.Amount, 'f', 2, 64) + "元",
			Amount:   req.Amount,
			ExpireAt: time.Now().Add(30 * time.Minute),
			Type:     trade2.TypeRecharge,
			Method:   trade2.MethodAlipay,
		})
		return err
	})
	if err != nil {
		return err
	}

	// 返回结果
	return c.JSON(RechargePrepareResp{
		TradeNo: result.TradeNo,
		PayURL:  result.PayURL,
	})
}

func RechargeConfirmAlipay(c *fiber.Ctx) error {
	// 检查权限
	_, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}

	// 解析请求参数
	req := new(RechargeConfirmReq)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 验证支付结果
	result, err := s.Transaction.VerifyTransaction(c.Context(), &s.TransactionVerifyData{
		TradeNo: req.TradeNo,
		Method:  trade2.MethodAlipay,
	})
	if err != nil {
		return err
	}

	// 更新数据库
	err = s.User.RechargeConfirm(c.Context(), req.TradeNo, result)
	if err != nil {
		return err
	}

	return c.JSON(fiber.Map{"status": "success"})
}

func RechargePrepareWechat(c *fiber.Ctx) error {
	// 检查权限
	authContext, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}

	// 解析请求参数
	req := new(RechargePrepareReq)
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 保存交易信息
	var result *s.TransactionPrepareResult
	err = q.Q.Transaction(func(tx *q.Query) error {
		result, err = s.Transaction.PrepareTransaction(c.Context(), tx, authContext.Payload.Id, &s.TransactionPrepareData{
			Subject:  "账户充值 - " + strconv.FormatFloat(req.Amount, 'f', 2, 64) + "元",
			Amount:   req.Amount,
			ExpireAt: time.Now().Add(30 * time.Minute),
			Type:     trade2.TypeRecharge,
			Method:   trade2.MethodWeChat,
		})
		return err
	})
	if err != nil {
		return err
	}

	// 返回结果
	return c.JSON(RechargePrepareResp{
		TradeNo: result.TradeNo,
		PayURL:  result.PayURL,
	})
}

func RechargeConfirmWechat(c *fiber.Ctx) error {
	// 检查权限
	_, err := auth.Protect(c, []auth.PayloadType{auth.PayloadUser}, []string{})
	if err != nil {
		return err
	}

	// 解析请求参数
	req := new(struct {
		TradeNo string `json:"trade_no" validate:"required"`
	})
	if err := c.BodyParser(req); err != nil {
		return err
	}

	// 验证支付结果
	result, err := s.Transaction.VerifyTransaction(c.Context(), &s.TransactionVerifyData{
		TradeNo: req.TradeNo,
		Method:  trade2.MethodWeChat,
	})
	if err != nil {
		return err
	}

	// 更新数据库
	err = s.User.RechargeConfirm(c.Context(), req.TradeNo, result)
	if err != nil {
		return err
	}

	return c.JSON(fiber.Map{"status": "success"})
}

// endregion