package service

import (
	"cid/dao"
	"cid/model/dto"
	"cid/model/entity"
	"context"
	"time"

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

var AdPosition = new(adPosition)

type adPosition struct{}

// Add 添加广告位
func (s *adPosition) Add(ctx context.Context, req *dto.AddAdPositionReq) (res *dto.AddAdPositionRes, err error) {
	adPosition := &entity.AdPosition{}
	if err = gconv.Struct(req, adPosition); err != nil {
		return
	}

	// 设置基础字段
	now := time.Now()
	adPosition.CreatedAt = now
	adPosition.UpdatedAt = now
	adPosition.IsDeleted = false

	if err = dao.AdPosition.Insert(ctx, adPosition); err != nil {
		return
	}

	res = &dto.AddAdPositionRes{Id: adPosition.Id.Hex()}
	return
}

// Update 更新广告位
func (s *adPosition) Update(ctx context.Context, req *dto.UpdateAdPositionReq) (err error) {
	// 更新修改时间（不需要设置，DAO层会处理）
	return dao.AdPosition.Update(ctx, req)
}

// UpdateStatus 更新广告位状态
func (s *adPosition) UpdateStatus(ctx context.Context, req *dto.UpdateAdPositionStatusReq) (err error) {
	return dao.AdPosition.UpdateStatus(ctx, req.Id, req.Status)
}

// GetOne 获取广告位详情
func (s *adPosition) GetOne(ctx context.Context, req *dto.GetAdPositionReq) (res *dto.GetAdPositionRes, err error) {
	adPosition, err := dao.AdPosition.GetOne(ctx, req.Id)
	if err != nil {
		return
	}

	res = &dto.GetAdPositionRes{
		AdPosition: adPosition,
	}
	return
}

// List 获取广告位列表
func (s *adPosition) List(ctx context.Context, req *dto.ListAdPositionReq) (res *dto.ListAdPositionRes, err error) {
	list, total, err := dao.AdPosition.List(ctx, req)
	if err != nil {
		return
	}

	res = &dto.ListAdPositionRes{
		List:  list,
		Total: int(total),
	}
	return
}

// GetByCode 根据编码获取广告位
func (s *adPosition) GetByCode(ctx context.Context, code string) (adPosition *entity.AdPosition, err error) {
	return dao.AdPosition.GetByCode(ctx, code)
}

// GetAvailableAdPositions 获取可用的广告位列表
func (s *adPosition) GetAvailableAdPositions(ctx context.Context) (list []*entity.AdPosition, err error) {
	return dao.AdPosition.GetAvailableAdPositions(ctx)
}

// MatchAd 匹配广告
func (s *adPosition) MatchAd(ctx context.Context, positionCode string, userInfo map[string]interface{}) (ad *entity.Advertisement, err error) {
	// 获取广告位信息
	adPosition, err := dao.AdPosition.GetByCode(ctx, positionCode)
	if err != nil {
		return
	}

	// 检查广告位状态
	if adPosition.Status != "启用" {
		return nil, gerror.New("广告位未启用")
	}

	// 获取符合条件的广告列表
	// 这里简化处理，实际项目中应该根据广告定向条件匹配广告
	// 可以使用MongoDB的聚合管道实现复杂匹配逻辑

	// 返回匹配的广告
	// 这里返回第一个广告作为示例
	ad = &entity.Advertisement{
		Title:       "示例广告",
		MaterialUrl: "https://example.com/ad.jpg",
		TargetUrl:   "https://example.com",
	}

	return
}

// UpdateAdPositionStatistics 更新广告位统计
func (s *adPosition) UpdateAdPositionStatistics(ctx context.Context, id string, impressions, clicks, revenue int64) (err error) {
	return
}