package service

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

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

var Advertisement = new(advertisement)

type advertisement struct{}

// Add 添加广告
func (s *advertisement) Add(ctx context.Context, req *dto.AddAdvertisementReq) (res *dto.AddAdvertisementRes, err error) {
	advertisement := &entity.Advertisement{}
	if err = gconv.Struct(req, advertisement); err != nil {
		return
	}

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

	// 设置初始状态
	advertisement.Status = "待审核"

	// 初始化统计字段
	advertisement.Impressions = 0
	advertisement.Clicks = 0
	advertisement.Conversions = 0
	advertisement.Cost = 0

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

	res = &dto.AddAdvertisementRes{Id: advertisement.Id.Hex()}
	return
}

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

// UpdateStatus 更新广告状态
func (s *advertisement) UpdateStatus(ctx context.Context, req *dto.UpdateAdStatusReq) (err error) {
	return dao.Advertisement.UpdateStatus(ctx, req.Id, req.Status)
}

// Audit 审核广告
func (s *advertisement) Audit(ctx context.Context, req *dto.AuditAdvertisementReq) (err error) {
	return dao.Advertisement.Audit(ctx, req.Id, req.AuditStatus, req.AuditReason)
}

// GetOne 获取广告详情
func (s *advertisement) GetOne(ctx context.Context, req *dto.GetAdvertisementReq) (res *dto.GetAdvertisementRes, err error) {
	advertisement, err := dao.Advertisement.GetOne(ctx, req.Id)
	if err != nil {
		return
	}

	res = &dto.GetAdvertisementRes{
		Advertisement: advertisement,
	}
	return
}

// List 获取广告列表
func (s *advertisement) List(ctx context.Context, req *dto.ListAdvertisementReq) (res *dto.ListAdvertisementRes, err error) {
	list, total, err := dao.Advertisement.List(ctx, req)
	if err != nil {
		return
	}

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

// UpdateAdStatistics 更新广告统计
func (s *advertisement) UpdateAdStatistics(ctx context.Context, id string, impressions, clicks, conversions int64, cost int64) (err error) {
	// 获取广告信息
	ad, err := dao.Advertisement.GetOne(ctx, id)
	if err != nil {
		return
	}

	// 计算统计数据
	totalImpressions := ad.Impressions + impressions
	totalClicks := ad.Clicks + clicks
	totalConversions := ad.Conversions + conversions
	totalCost := ad.Cost + cost

	// 计算比率
	ctr := 0.0
	if totalImpressions > 0 {
		ctr = float64(totalClicks) / float64(totalImpressions)
	}

	cvr := 0.0
	if totalClicks > 0 {
		cvr = float64(totalConversions) / float64(totalClicks)
	}

	cpm := int64(0)
	if totalImpressions > 0 {
		cpm = totalCost * 1000 / totalImpressions
	}

	cpc := int64(0)
	if totalClicks > 0 {
		cpc = totalCost / totalClicks
	}

	// 构建更新数据
	stats := map[string]interface{}{
		"impressions": totalImpressions,
		"clicks":      totalClicks,
		"conversions": totalConversions,
		"cost":        totalCost,
		"updatedAt":   time.Now(),
	}

	// 更新广告统计
	err = dao.Advertisement.UpdateStatistics(ctx, id, stats)
	if err != nil {
		return
	}

	// 插入统计记录
	today := time.Now()
	todayStart := time.Date(today.Year(), today.Month(), today.Day(), 0, 0, 0, 0, today.Location()).Unix()

	statistics := &entity.AdStatistics{
		StatType:      "advertisement",
		StatDimension: "day",
		TargetId:      id,
		TargetName:    ad.Title,
		StatDate:      todayStart,
		Impressions:   impressions,
		Clicks:        clicks,
		Conversions:   conversions,
		Cost:          cost,
		CTR:           ctr,
		CVR:           cvr,
		CPM:           cpm,
		CPC:           cpc,
		// CreatedAt、UpdatedAt、IsDeleted字段是嵌入字段，无需单独设置
	}

	err = dao.AdStatistics.Upsert(ctx, statistics)
	return
}