package controller

import (
	"github.com/gin-gonic/gin"
	"hepa-calc-admin-api/api/dao"
	"hepa-calc-admin-api/api/dto"
	"hepa-calc-admin-api/api/model"
	"hepa-calc-admin-api/api/requests"
	"hepa-calc-admin-api/api/responses"
	"hepa-calc-admin-api/global"
	"hepa-calc-admin-api/utils"
	"strconv"
	"time"
)

type SystemMember struct{}

// GetSystemMemberList 获取会员配置列表
func (b *SystemMember) GetSystemMemberList(c *gin.Context) {
	// 获取数据
	systemMemberDao := dao.SystemMemberDao{}
	systemMembers, err := systemMemberDao.GetSystemMemberListSearch()
	if err != nil {
		responses.FailWithMessage(err.Error(), c)
		return
	}

	// 处理返回值
	g := dto.GetSystemMemberListDto(systemMembers)

	responses.OkWithData(g, c)
}

// GetSystemMember 获取会员配置详情
func (b *SystemMember) GetSystemMember(c *gin.Context) {
	id := c.Param("system_member_id")
	if id == "" {
		responses.FailWithMessage("缺少参数", c)
		return
	}

	// 将 id 转换为 int64 类型
	systemMemberId, err := strconv.ParseInt(id, 10, 64)
	if err != nil {
		responses.Fail(c)
		return
	}

	// 获取问题数据
	systemMemberDao := dao.SystemMemberDao{}
	systemMember, err := systemMemberDao.GetSystemMemberById(systemMemberId)
	if err != nil {
		responses.FailWithMessage("数据异常", c)
		return
	}

	// 处理返回值
	g := dto.GetSystemMemberDto(systemMember)

	responses.OkWithData(g, c)
}

// PutSystemMember 修改会员配置
func (b *SystemMember) PutSystemMember(c *gin.Context) {
	systemMemberRequest := requests.SystemMemberRequest{}
	req := systemMemberRequest.PutSystemMember
	if err := c.ShouldBindJSON(&req); err != nil {
		responses.FailWithMessage(err.Error(), c)
		return
	}

	// 参数验证
	if err := global.Validate.Struct(req); err != nil {
		responses.FailWithMessage(utils.Translate(err), c)
		return
	}

	if req.DiscountPrice != nil {
		if req.Price < *req.DiscountPrice {
			responses.FailWithMessage("优惠价格不可超过原价", c)
			return
		}

		if req.DiscountEndTime == nil {
			responses.FailWithMessage("请填写优惠过期时间", c)
			return
		}
	}

	id := c.Param("system_member_id")
	if id == "" {
		responses.FailWithMessage("缺少参数", c)
		return
	}

	// 将 id 转换为 int64 类型
	systemMemberId, err := strconv.ParseInt(id, 10, 64)
	if err != nil {
		responses.Fail(c)
		return
	}

	// 获取问题数据
	systemMemberDao := dao.SystemMemberDao{}
	systemMember, err := systemMemberDao.GetSystemMemberById(systemMemberId)
	if err != nil {
		responses.FailWithMessage("数据异常", c)
		return
	}

	// 修改值
	systemMemberData := make(map[string]interface{})

	// 会员天数
	if req.MemberDays != systemMember.MemberDays {
		systemMemberData["member_days"] = req.MemberDays
	}

	// 价格
	if req.Price != systemMember.Price {
		systemMemberData["price"] = req.Price
	}

	// 优惠价格
	if req.DiscountPrice != nil {
		if systemMember.DiscountPrice == nil {
			systemMemberData["discount_price"] = req.DiscountPrice
		} else {
			if *req.DiscountPrice != *systemMember.DiscountPrice {
				systemMemberData["discount_price"] = req.DiscountPrice
			}
		}
	} else {
		if systemMember.DiscountPrice != nil {
			systemMemberData["discount_price"] = nil
		}
	}

	// 优惠截止时间
	if req.DiscountEndTime != nil {
		// 获取本地时区
		location, err := time.LoadLocation("Local")
		if err != nil {
			responses.FailWithMessage("优惠截止时间错误", c)
			return
		}

		discountEndTime, err := time.ParseInLocation("2006-01-02 15:04:05", *req.DiscountEndTime, location)
		if err != nil {
			responses.FailWithMessage("优惠截止时间错误", c)
			return
		}

		if systemMember.DiscountEndTime == nil {
			systemMemberData["discount_end_time"] = discountEndTime
		} else {
			if *systemMember.DiscountEndTime != discountEndTime {
				systemMemberData["discount_end_time"] = discountEndTime
			}
		}
	} else {
		if systemMember.DiscountEndTime != nil {
			systemMemberData["discount_end_time"] = nil
		}
	}

	// 开始事务
	tx := global.Db.Begin()
	defer func() {
		if r := recover(); r != nil {
			tx.Rollback()
		}
	}()

	if len(systemMemberData) > 0 {
		err = systemMemberDao.EditSystemMemberById(tx, systemMember.SystemMemberId, systemMemberData)
		if err != nil {
			tx.Rollback()
			responses.FailWithMessage("操作失败", c)
			return
		}
	}

	tx.Commit()
	responses.Ok(c)
}

// AddSystemMember 新增会员配置
func (b *SystemMember) AddSystemMember(c *gin.Context) {
	systemMemberRequest := requests.SystemMemberRequest{}
	req := systemMemberRequest.AddSystemMember
	if err := c.ShouldBindJSON(&req); err != nil {
		responses.FailWithMessage(err.Error(), c)
		return
	}

	// 参数验证
	if err := global.Validate.Struct(req); err != nil {
		responses.FailWithMessage(utils.Translate(err), c)
		return
	}

	if req.DiscountPrice != nil {
		if req.Price < *req.DiscountPrice {
			responses.FailWithMessage("优惠价格不可超过原价", c)
			return
		}

		if req.DiscountEndTime == nil {
			responses.FailWithMessage("请填写优惠过期时间", c)
			return
		}
	}

	// 开始事务
	tx := global.Db.Begin()
	defer func() {
		if r := recover(); r != nil {
			tx.Rollback()
		}
	}()

	systemMember := &model.SystemMember{
		MemberDays:    req.MemberDays,
		Price:         req.Price,
		DiscountPrice: req.DiscountPrice,
	}

	// 处理优惠截止时间
	if req.DiscountEndTime != nil {
		// 获取本地时区
		location, err := time.LoadLocation("Local")
		if err != nil {
			tx.Rollback()
			responses.FailWithMessage("优惠截止时间错误", c)
			return
		}

		discountEndTime, err := time.ParseInLocation("2006-01-02 15:04:05", *req.DiscountEndTime, location)
		if err != nil {
			tx.Rollback()
			responses.FailWithMessage("优惠截止时间错误", c)
			return
		}

		systemMember.DiscountEndTime = &discountEndTime
	}

	systemMemberDao := dao.SystemMemberDao{}
	systemMember, err := systemMemberDao.AddSystemMember(tx, systemMember)
	if err != nil {
		tx.Rollback()
		responses.FailWithMessage("操作失败", c)
		return
	}

	tx.Commit()
	responses.Ok(c)
}