package playletser

import (
	"context"
	"crypto/sha256"
	"encoding/json"
	"fmt"
	"sort"
	"strings"
	"sync"
	"time"
	"videoweb/app/api/proto"
	"videoweb/app/service/configser"
	"videoweb/app/service/moreser"
	"videoweb/app/service/reportser"
	"videoweb/app/service/slugser"
	"videoweb/app/service/translationser"
	"videoweb/app/service/videoser"
	"videoweb/pub/common/enum/redisconst"
	"videoweb/pub/common/log"
	"videoweb/pub/common/netutil"
	"videoweb/pub/common/response"
	"videoweb/pub/common/srvdef"
	"videoweb/pub/common/useragent"
	"videoweb/pub/common/utils"
	"videoweb/pub/models"
	"videoweb/pub/models/announcementmod"
	"videoweb/pub/models/contenttagmod"
	"videoweb/pub/models/playletchaptermod"
	"videoweb/pub/models/playletfavoritemod"
	"videoweb/pub/models/playlethomeconfigmod"
	"videoweb/pub/models/playletlikemod"
	"videoweb/pub/models/playletmod"
	"videoweb/pub/models/playletthememod"
	"videoweb/pub/models/videocategorymod"
	"videoweb/pub/models/videoinformationmod"
	"videoweb/pub/pubdef"
	"videoweb/pub/redis"
	"videoweb/pub/storage/proxy"

	"go.mongodb.org/mongo-driver/bson"
	"go.mongodb.org/mongo-driver/mongo/options"

	"github.com/gin-gonic/gin"
)

const (
	playletGuessMinPageSize         int64 = 8
	playletGuessMaxPageSize         int64 = 100
	playletRecommendDefaultPageSize int64 = 20
	playletRecommendMaxPageSize     int64 = 100
	playletRecommendAdInterval      int64 = 8
	playletListAdInterval           int64 = 4
	playletContentPlayletAdInterval int64 = 4
	playletContentVideoAdInterval   int64 = 5
	homePlayletListLimit            int64 = 12
	playletDetailHotLimit           int64 = 11
)

// PlayletGuessList 分页查询猜你喜欢短剧，按观看量降序返回上架短剧
func PlayletGuessList(ctx context.Context, req *proto.PlayletGuessListReq) (*proto.PlayletGuessListResp, *srvdef.SrvErr) {
	if req == nil || req.Id < 0 {
		return nil, srvdef.New(srvdef.ErrParamError, "短剧ID无效")
	}
	pageNum, pageSize := moreser.NormalizePage(req.PageNum, req.PageSize, playletGuessMinPageSize, playletGuessMaxPageSize)
	if pageSize < playletGuessMinPageSize {
		pageSize = playletGuessMinPageSize
	}
	filter := bson.M{
		playletmod.FN.Playlet.Status: playletmod.StatusUp,
	}
	if req.Id > 0 {
		filter[playletmod.FN.Playlet.Id] = bson.M{"$ne": req.Id}
	}
	total, err := playletmod.CountPlaylet(ctx, filter)
	if err != nil {
		return nil, err
	}
	resp := &proto.PlayletGuessListResp{BasePageResp: response.BasePageResp{
		TotalCount: total,
		PageNum:    int(pageNum),
		PageSize:   int(pageSize),
		List:       make([]*proto.PlayletRecommendListItem, 0),
	}}
	if total == 0 || pageNum > (total-1)/pageSize+1 {
		return resp, nil
	}
	list, err := findPlayletRecommendPage(ctx, filter, bson.D{
		{Key: playletmod.FN.Playlet.CountBrowse, Value: -1},
		{Key: playletmod.FN.Playlet.Id, Value: -1},
	}, (pageNum-1)*pageSize, pageSize)
	if err != nil {
		return nil, err
	}
	tagNames, themeNames, err := buildPlayletTagThemeNameMaps(ctx, list)
	if err != nil {
		return nil, err
	}
	cdn := configser.ImageCdnFromCtx(ctx)
	items := make([]*proto.PlayletRecommendListItem, 0, len(list))
	for _, item := range list {
		if item != nil {
			items = append(items, playletToRecommendListItem(item, cdn, tagNames, themeNames))
		}
	}
	resp.List = items
	return resp, nil
}

// playletRankAggItem 短剧排行榜聚合结果，只保留榜单展示需要的轻量字段
type playletRankAggItem struct {
	playletmod.Playlet `bson:",inline"`
	RankScore          int64 `bson:"rankScore"`
}

type playletRankCount struct {
	Total int64 `bson:"total"`
}

// PlayletThemeList 查询全部已启用短剧题材
func PlayletThemeList(ctx context.Context) (*proto.PlayletThemeListResp, *srvdef.SrvErr) {
	list, err := playletthememod.FindManyPlayletTheme(ctx,
		bson.M{playletthememod.FN.PlayletTheme.Status: true},
		options.Find().
			SetProjection(bson.D{
				{Key: playletthememod.FN.PlayletTheme.Id, Value: 1},
				{Key: playletthememod.FN.PlayletTheme.Name, Value: 1},
				{Key: playletthememod.FN.PlayletTheme.Slug, Value: 1},
				{Key: playletthememod.FN.PlayletTheme.Icon, Value: 1},
				{Key: playletthememod.FN.PlayletTheme.Rank, Value: 1},
				{Key: playletthememod.FN.PlayletTheme.SeoInfo.Title, Value: 1},
				{Key: playletthememod.FN.PlayletTheme.SeoInfo.Description, Value: 1},
				{Key: playletthememod.FN.PlayletTheme.SeoInfo.Keyworld, Value: 1},
			}).
			SetSort(bson.D{
				{Key: playletthememod.FN.PlayletTheme.Rank, Value: -1},
				{Key: playletthememod.FN.PlayletTheme.Id, Value: -1},
			}),
	)
	if err != nil {
		return nil, err
	}
	cdn := configser.ImageCdnFromCtx(ctx)
	resp := &proto.PlayletThemeListResp{List: make([]proto.PlayletThemeItem, 0, len(list))}
	for _, item := range list {
		if item == nil {
			continue
		}
		resp.List = append(resp.List, proto.PlayletThemeItem{
			Id: item.Id, Name: item.Name, Slug: item.Slug,
			Icon: netutil.MergeURL(cdn, item.Icon), Rank: item.Rank, SeoInfo: item.SeoInfo,
		})
	}
	return resp, nil
}

var appPlayletRecommendProjection = bson.D{
	{Key: playletmod.FN.Playlet.Id, Value: 1},
	{Key: playletmod.FN.Playlet.Status, Value: 1},
	{Key: playletmod.FN.Playlet.IsRecommend, Value: 1},
	{Key: playletmod.FN.Playlet.IsFeatured, Value: 1},
	{Key: playletmod.FN.Playlet.IsOriginal, Value: 1},
	{Key: playletmod.FN.Playlet.ShowOriginal, Value: 1},
	{Key: playletmod.FN.Playlet.MediaCenterId, Value: 1},
	{Key: playletmod.FN.Playlet.OnlineAt, Value: 1},
	{Key: playletmod.FN.Playlet.MediaCreatedAt, Value: 1},
	{Key: playletmod.FN.Playlet.MediaUpdatedAt, Value: 1},
	{Key: playletmod.FN.Playlet.Title, Value: 1},
	{Key: playletmod.FN.Playlet.Slug, Value: 1},
	{Key: playletmod.FN.Playlet.Desc, Value: 1},
	{Key: playletmod.FN.Playlet.Anchor, Value: 1},
	{Key: playletmod.FN.Playlet.Cover, Value: 1},
	{Key: playletmod.FN.Playlet.CompressedCover, Value: 1},
	{Key: playletmod.FN.Playlet.Preview, Value: 1},
	{Key: playletmod.FN.Playlet.CategoryIds, Value: 1},
	{Key: playletmod.FN.Playlet.TagIds, Value: 1},
	{Key: playletmod.FN.Playlet.ThemeIds, Value: 1},
	{Key: playletmod.FN.Playlet.ContentType, Value: 1},
	{Key: playletmod.FN.Playlet.PayType, Value: 1},
	{Key: playletmod.FN.Playlet.SingleCoins, Value: 1},
	{Key: playletmod.FN.Playlet.TotalEpisode, Value: 1},
	{Key: playletmod.FN.Playlet.FreeEpisodeCount, Value: 1},
	{Key: playletmod.FN.Playlet.UpdateStatus, Value: 1},
	{Key: playletmod.FN.Playlet.CountBrowse, Value: 1},
	{Key: playletmod.FN.Playlet.VirtualCountBrowse, Value: 1},
	{Key: playletmod.FN.Playlet.HeatValue, Value: 1},
	{Key: playletmod.FN.Playlet.VirtualHeatValue, Value: 1},
	{Key: playletmod.FN.Playlet.CountCollect, Value: 1},
	{Key: playletmod.FN.Playlet.CountLike, Value: 1},
	{Key: playletmod.FN.Playlet.VirtualCountLike, Value: 1},
	{Key: playletmod.FN.Playlet.SeoInfo.Title, Value: 1},
	{Key: playletmod.FN.Playlet.SeoInfo.Description, Value: 1},
	{Key: playletmod.FN.Playlet.SeoInfo.Keyworld, Value: 1},
	{Key: playletmod.FN.Playlet.CreatedAt, Value: 1},
	{Key: playletmod.FN.Playlet.UpdatedAt, Value: 1},
}

// playletDetailProjection 短剧详情投影，额外返回详情页需要的评论数量
func playletDetailProjection() bson.D {
	projection := make(bson.D, 0, len(appPlayletRecommendProjection)+1)
	projection = append(projection, appPlayletRecommendProjection...)
	projection = append(projection, bson.E{Key: playletmod.FN.Playlet.CountComment, Value: 1})
	return projection
}

// PlayletRecommendList 分页查询 app 端短剧推荐列表，并按固定间隔穿插列表广告
func PlayletRecommendList(ctx context.Context, req *proto.PlayletRecommendListReq) (*proto.PlayletRecommendListResp, *srvdef.SrvErr) {
	if req == nil {
		return nil, srvdef.New(srvdef.ErrParamError, "", "")
	}
	categoryId, err := slugser.PlayletCategoryID(ctx, req.CategoryId, req.CategorySlug, false)
	if err != nil {
		return nil, err
	}
	tagId, err := slugser.ContentTagID(ctx, req.TagId, req.TagSlug, false)
	if err != nil {
		return nil, err
	}
	req.CategoryId = categoryId
	req.TagId = tagId
	pageNum, pageSize := moreser.NormalizePage(req.PageNum, req.PageSize, playletRecommendDefaultPageSize, playletRecommendMaxPageSize)
	filter, sort := playletRecommendFilterAndSort(req.TagId, req.CategoryId, req.SortList)
	config := configser.GetRequestConfig(ctx)
	ads := configser.GetAdvitise().PostList
	totalCount, err := playletmod.CountPlaylet(ctx, filter)
	if err != nil {
		return nil, err
	}
	if len(ads) == 0 {
		return playletRecommendListWithoutAds(ctx, filter, sort, req.CategoryId, pageNum, pageSize, totalCount, config.ImgCdn)
	}
	adsTotalCount := moreser.InsertedAdsCount(totalCount, int64(len(ads)), playletRecommendAdInterval)
	mixedTotalCount := totalCount + adsTotalCount
	start := (pageNum - 1) * pageSize
	if start >= mixedTotalCount || totalCount == 0 {
		resp := emptyPlayletRecommendListPage(pageNum, pageSize)
		resp.TotalCount = mixedTotalCount
		return resp, nil
	}
	end := start + pageSize
	if end > mixedTotalCount {
		end = mixedTotalCount
	}
	contentStart, contentLimit := moreser.ContentRange(start, end, totalCount, adsTotalCount, playletRecommendAdInterval)
	list := playletmod.PlayletList{}
	if contentLimit > 0 {
		list, err = findPlayletRecommendPage(ctx, filter, sort, contentStart, contentLimit, req.CategoryId)
		if err != nil {
			return nil, err
		}
	}
	tagNameMap, themeNameMap, err := buildPlayletTagThemeNameMaps(ctx, list)
	if err != nil {
		return nil, err
	}
	items := buildPlayletRecommendMixedList(list, ads, config.ImgCdn, tagNameMap, themeNameMap, start, end, contentStart, adsTotalCount)
	return &proto.PlayletRecommendListResp{BasePageResp: response.BasePageResp{
		TotalCount: mixedTotalCount,
		PageSize:   int(pageSize),
		PageNum:    int(pageNum),
		List:       items,
	}}, nil
}

// PlayletList 分页查询已上架短剧，每四部短剧后穿插一条广告
func PlayletList(ctx context.Context, req *proto.PlayletListReq) (*proto.PlayletListResp, *srvdef.SrvErr) {
	if req == nil {
		return nil, srvdef.New(srvdef.ErrParamError, "参数不能为空", "")
	}
	if req.SortType != 0 && req.SortType != 1 && req.SortType != 2 {
		return nil, srvdef.New(srvdef.ErrParamError, "排序方式无效", "")
	}
	filter := playletListFilter()
	if slug := strings.TrimSpace(req.ThemeSlug); slug != "" || req.ThemeId > 0 {
		themeFilter := bson.M{playletthememod.FN.PlayletTheme.Status: true}
		if slug != "" {
			themeFilter[playletthememod.FN.PlayletTheme.Slug] = slug
		} else {
			themeFilter[playletthememod.FN.PlayletTheme.Id] = req.ThemeId
		}
		theme, err := playletthememod.FindOnePlayletTheme(ctx, themeFilter)
		if err != nil {
			return nil, err
		}
		filter[playletmod.FN.Playlet.ThemeIds] = theme.Id
	}
	pageNum, pageSize := moreser.NormalizePage(req.PageNum, req.PageSize, playletRecommendDefaultPageSize, playletRecommendMaxPageSize)
	playletCount, err := playletmod.CountPlaylet(ctx, filter)
	if err != nil {
		return nil, err
	}
	advitise := configser.GetAdvitise()
	ads := advitise.PostList
	adCount := playletListInsertedAdsCount(playletCount, len(ads))
	mixedCount := playletCount + adCount
	resp := &proto.PlayletListResp{
		BasePageResp: response.BasePageResp{
			TotalCount: mixedCount, PageNum: int(pageNum), PageSize: int(pageSize),
			List: make([]*proto.PlayletRecommendListItem, 0),
		},
		Advitise: advitise,
	}
	start := (pageNum - 1) * pageSize
	if start >= mixedCount {
		return resp, nil
	}
	end := start + pageSize
	if end > mixedCount {
		end = mixedCount
	}
	contentStart, contentLimit := moreser.ContentRange(start, end, playletCount, adCount, playletListAdInterval)
	list := make(playletmod.PlayletList, 0)
	if contentLimit > 0 {
		list, err = findPlayletRecommendPage(ctx, filter, playletListSort(req.SortType), contentStart, contentLimit)
		if err != nil {
			return nil, err
		}
	}
	tagNames, themeNames, err := buildPlayletTagThemeNameMaps(ctx, list)
	if err != nil {
		return nil, err
	}
	resp.List = buildPlayletListMixedPage(list, ads, configser.GetRequestConfig(ctx).ImgCdn,
		tagNames, themeNames, start, end, contentStart, adCount)
	return resp, nil
}

// ContentList 分页查询上架短剧或视频，短剧每四条、视频每五条穿插一条广告
func ContentList(ctx context.Context, req *proto.PlayletContentListReq) (*proto.PlayletContentListResp, *srvdef.SrvErr) {
	if req == nil || (req.DataType != 1 && req.DataType != 2) {
		return nil, srvdef.New(srvdef.ErrParamError, "数据类型无效", "")
	}
	pageNum, pageSize := moreser.NormalizePage(req.PageNum, req.PageSize, playletRecommendDefaultPageSize, playletRecommendMaxPageSize)
	var (
		contentCount int64
		err          *srvdef.SrvErr
	)
	if req.DataType == 1 {
		contentCount, err = playletmod.CountPlaylet(ctx, bson.M{playletmod.FN.Playlet.Status: playletmod.StatusUp})
	} else {
		contentCount, err = videoinformationmod.CountVideoInformations(ctx, bson.M{
			videoinformationmod.FN.VideoInformation.Status: pubdef.InformationStatusVerifyOK,
		})
	}
	if err != nil {
		return nil, err
	}
	advitise := configser.GetAdvitise()
	ads := advitise.PostList
	interval := playletContentAdInterval(req.DataType)
	adCount := playletContentInsertedAdsCount(contentCount, len(ads), interval)
	mixedCount := contentCount + adCount
	resp := &proto.PlayletContentListResp{
		BasePageResp: response.BasePageResp{
			TotalCount: mixedCount, PageNum: int(pageNum), PageSize: int(pageSize),
			List: make([]*proto.PlayletContentListItem, 0),
		},
		Advitise: advitise,
	}
	start := (pageNum - 1) * pageSize
	if start >= mixedCount {
		return resp, nil
	}
	end := start + pageSize
	if end > mixedCount {
		end = mixedCount
	}
	contentStart, contentLimit := moreser.ContentRange(start, end, contentCount, adCount, interval)
	imgCdn := configser.GetRequestConfig(ctx).ImgCdn
	items := make([]*proto.PlayletContentListItem, 0, contentLimit)
	if contentLimit > 0 {
		items, err = findPlayletContentPage(ctx, req.DataType, contentStart, contentLimit, imgCdn)
		if err != nil {
			return nil, err
		}
	}
	resp.List = buildPlayletContentMixedPage(items, ads, imgCdn,
		start, end, contentStart, adCount, interval)
	return resp, nil
}

// playletContentAdInterval 根据数据类型返回广告插入间隔
func playletContentAdInterval(dataType int64) int64 {
	if dataType == 2 {
		return playletContentVideoAdInterval
	}
	return playletContentPlayletAdInterval
}

// playletContentInsertedAdsCount 只在后续仍有内容时插入广告，素材不足时循环使用
func playletContentInsertedAdsCount(contentCount int64, adsCount int, interval int64) int64 {
	if contentCount <= 1 || adsCount == 0 {
		return 0
	}
	return (contentCount - 1) / interval
}

// findPlayletContentPage 按数据类型查询当前页需要的内容并转换为统一列表项
func findPlayletContentPage(ctx context.Context, dataType, skip, limit int64, imgCdn string) ([]*proto.PlayletContentListItem, *srvdef.SrvErr) {
	items := make([]*proto.PlayletContentListItem, 0, limit)
	if dataType == 1 {
		list, err := findPlayletRecommendPage(ctx,
			bson.M{playletmod.FN.Playlet.Status: playletmod.StatusUp}, playletContentPlayletSort(), skip, limit)
		if err != nil {
			return nil, err
		}
		tagNames, themeNames, err := buildPlayletTagThemeNameMaps(ctx, list)
		if err != nil {
			return nil, err
		}
		for _, item := range list {
			data := playletToAppData(item, imgCdn, tagNames, themeNames)
			items = append(items, &proto.PlayletContentListItem{Type: 0, Playlet: &data})
		}
		return items, nil
	}
	list := make(videoinformationmod.VideoInformationList, 0)
	if err := videoinformationmod.AggregateVideoInformations(ctx, &list, playletContentVideoPipeline(skip, limit)); err != nil {
		return nil, err
	}
	for _, item := range list {
		data := playletContentVideoInfo(item, imgCdn)
		items = append(items, &proto.PlayletContentListItem{Type: 0, Video: &data})
	}
	return items, nil
}

// playletContentPlayletSort 先按短剧累计浏览数排序，再按热度和 ID 稳定排序
func playletContentPlayletSort() bson.D {
	return bson.D{
		{Key: playletmod.FN.Playlet.CountBrowse, Value: -1},
		{Key: playletmod.FN.Playlet.HeatValue, Value: -1},
		{Key: playletmod.FN.Playlet.Id, Value: -1},
	}
}

// playletContentVideoPipeline 按视频展示观看数分页，展示观看数为真实数与后台配置数之和
func playletContentVideoPipeline(skip, limit int64) []bson.M {
	return []bson.M{
		{"$match": bson.M{videoinformationmod.FN.VideoInformation.Status: pubdef.InformationStatusVerifyOK}},
		{"$addFields": bson.M{"watchScore": bson.M{"$add": []interface{}{
			bson.M{"$ifNull": []interface{}{"$" + videoinformationmod.FN.VideoInformation.Real.WatchTimes, 0}},
			bson.M{"$ifNull": []interface{}{"$" + videoinformationmod.FN.VideoInformation.Fake.WatchTimes, 0}},
		}}}},
		{"$sort": bson.D{
			{Key: "watchScore", Value: -1},
			{Key: videoinformationmod.FN.VideoInformation.UpdatedAt, Value: -1},
			{Key: videoinformationmod.FN.VideoInformation.Id, Value: -1},
		}},
		{"$skip": skip},
		{"$limit": limit},
		{"$project": playletContentVideoProjection()},
	}
}

// playletContentVideoProjection 只读取视频卡片需要的字段
func playletContentVideoProjection() bson.M {
	return bson.M{
		videoinformationmod.FN.VideoInformation.Id:              1,
		videoinformationmod.FN.VideoInformation.Title:           1,
		videoinformationmod.FN.VideoInformation.Slug:            1,
		videoinformationmod.FN.VideoInformation.Keyworld:        1,
		videoinformationmod.FN.VideoInformation.Desc:            1,
		videoinformationmod.FN.VideoInformation.AddedTime:       1,
		videoinformationmod.FN.VideoInformation.CoverImg:        1,
		videoinformationmod.FN.VideoInformation.Tags:            1,
		videoinformationmod.FN.VideoInformation.Real.WatchTimes: 1,
		videoinformationmod.FN.VideoInformation.Fake.WatchTimes: 1,
		videoinformationmod.FN.VideoInformation.Real.Likes:      1,
		videoinformationmod.FN.VideoInformation.Fake.Likes:      1,
	}
}

// playletContentVideoInfo 将视频模型转换为列表卡片
func playletContentVideoInfo(item *videoinformationmod.VideoInformation, imgCdn string) proto.VideoInfo {
	tagNames, tagSlugs := configser.VideoTagNamesAndSlugs(item.Tags)
	return proto.VideoInfo{ContentData: proto.ContentData{
		Id: item.Id, Title: item.Title, Slug: item.Slug, AddedTime: item.AddedTime,
		CoverImg: netutil.MergeURL(imgCdn, item.CoverImg), Tags: item.Tags, TagsName: tagNames, TagSlugs: tagSlugs,
		WatchNum: item.Real.WatchTimes + item.Fake.WatchTimes,
		LikeNum:  item.Real.Likes + item.Fake.Likes,
		SeoInfo:  pubdef.SeoValue{Title: item.Title, Keyworld: append([]string{}, item.Keyworld...), Description: item.Desc},
	}}
}

// buildPlayletContentMixedPage 按全局位置组装内容与广告并保持跨页间隔一致
func buildPlayletContentMixedPage(content []*proto.PlayletContentListItem, ads []proxy.AdvitiseInfo, imgCdn string,
	start, end, contentStart, adCount, interval int64) []*proto.PlayletContentListItem {
	items := make([]*proto.PlayletContentListItem, 0, end-start)
	for pos := start; pos < end; pos++ {
		adIndex := moreser.AdIndexAtPositionWithoutTotal(pos, adCount, interval)
		if adIndex >= 0 && len(ads) > 0 {
			ad := ads[adIndex%int64(len(ads))]
			ad.Images = netutil.MergeURL(imgCdn, ad.Images)
			items = append(items, &proto.PlayletContentListItem{Type: 2, Advertise: &ad})
			continue
		}
		contentIndex := moreser.ContentIndexAtPositionWithoutTotal(pos, adCount, interval) - contentStart
		if contentIndex >= 0 && contentIndex < int64(len(content)) {
			items = append(items, content[contentIndex])
		}
	}
	return items
}

// playletListFilter 只查询已上架短剧
func playletListFilter() bson.M {
	return bson.M{playletmod.FN.Playlet.Status: playletmod.StatusUp}
}

// playletListInsertedAdsCount 只在仍有后续短剧时插入广告，广告素材不足时循环使用
func playletListInsertedAdsCount(playletCount int64, adsCount int) int64 {
	if playletCount <= 1 || adsCount == 0 {
		return 0
	}
	return (playletCount - 1) / playletListAdInterval
}

// playletListSort 根据列表排序方式生成稳定的短剧顺序
func playletListSort(sortType int64) bson.D {
	switch sortType {
	case 2:
		return bson.D{{Key: playletmod.FN.Playlet.UpdatedAt, Value: -1}, {Key: playletmod.FN.Playlet.Id, Value: -1}}
	default:
		return bson.D{{Key: playletmod.FN.Playlet.HeatValue, Value: -1}, {Key: playletmod.FN.Playlet.CountBrowse, Value: -1}, {Key: playletmod.FN.Playlet.Id, Value: -1}}
	}
}

// buildPlayletListMixedPage 根据全局位置组装当前页，避免跨页后重新计算广告间隔
func buildPlayletListMixedPage(list playletmod.PlayletList, ads []proxy.AdvitiseInfo, imgCdn string,
	tagNames contenttagmod.ContentTagMap, themeNames map[int64]string, start, end, contentStart, adCount int64) []*proto.PlayletRecommendListItem {
	items := make([]*proto.PlayletRecommendListItem, 0, end-start)
	contentByIndex := make(map[int64]*playletmod.Playlet, len(list))
	for i, item := range list {
		contentByIndex[contentStart+int64(i)] = item
	}
	for pos := start; pos < end; pos++ {
		adIndex := moreser.AdIndexAtPositionWithoutTotal(pos, adCount, playletListAdInterval)
		if adIndex >= 0 && len(ads) > 0 {
			items = append(items, playletAdToRecommendListItem(ads[adIndex%int64(len(ads))], imgCdn))
			continue
		}
		contentIndex := moreser.ContentIndexAtPositionWithoutTotal(pos, adCount, playletListAdInterval)
		if item := contentByIndex[contentIndex]; item != nil {
			items = append(items, playletToRecommendListItem(item, imgCdn, tagNames, themeNames))
		}
	}
	return items
}

// PlayletTagList 根据统一标签ID分页查询已上架短剧
func PlayletTagList(ctx context.Context, req *proto.ContentTagPageReq) (*proto.PlayletRecommendListResp, *srvdef.SrvErr) {
	if req == nil {
		return nil, srvdef.New(srvdef.ErrParamError, "标签ID不能为空", "")
	}
	tagId, err := slugser.ContentTagID(ctx, req.Id, req.Slug, true)
	if err != nil {
		return nil, err
	}
	req.Id = tagId
	pageNum, pageSize := moreser.NormalizePage(req.PageNum, req.PageSize, playletRecommendDefaultPageSize, playletRecommendMaxPageSize)
	ok, err := configser.HasEnabledContentTagBind(ctx, req.Id, contenttagmod.ContentTagTypePlaylet)
	if err != nil {
		return nil, err
	}
	if !ok {
		return emptyPlayletRecommendListPage(pageNum, pageSize), nil
	}
	filter := bson.M{
		playletmod.FN.Playlet.Status: playletmod.StatusUp,
		playletmod.FN.Playlet.TagIds: req.Id,
	}
	sort := bson.D{
		{Key: playletmod.FN.Playlet.RecommendRank, Value: -1},
		{Key: playletmod.FN.Playlet.UpdatedAt, Value: -1},
		{Key: playletmod.FN.Playlet.Id, Value: -1},
	}
	config := configser.GetRequestConfig(ctx)
	totalCount, err := playletmod.CountPlaylet(ctx, filter)
	if err != nil {
		return nil, err
	}
	return playletRecommendListWithoutAds(ctx, filter, sort, 0, pageNum, pageSize, totalCount, config.ImgCdn)
}

// QueryPlayletInfo 查询短剧详情、剧集列表和点赞状态
func QueryPlayletInfo(ctx context.Context, userId int64, ip, ua string, req *proto.QueryPlayletInfoReq) (*proto.QueryPlayletInfoResp, *srvdef.SrvErr) {
	if req == nil {
		return nil, srvdef.New(srvdef.ErrParamError, "", "")
	}
	playletId, err := slugser.PlayletID(ctx, req.Id, req.Slug, true)
	if err != nil {
		return nil, err
	}
	req.Id = playletId
	config := configser.GetRequestConfig(ctx)
	playletInfo, err := playletmod.FindOnePlaylet(ctx, bson.M{
		playletmod.FN.Playlet.Id:     req.Id,
		playletmod.FN.Playlet.Status: playletmod.StatusUp,
	}, options.FindOne().SetProjection(playletDetailProjection()))
	if err != nil {
		return nil, err
	}
	go incrementPlayletWatchCount(playletInfo)
	chapterList, isLike, err := queryPlayletDetailExtraData(ctx, userId, playletInfo, ip, ua)
	if err != nil {
		return nil, err
	}
	isFavorite, err := queryPlayletIsFavorite(ctx, userId, playletInfo.Id)
	if err != nil {
		return nil, err
	}
	tagNameMap, themeNameMap, err := buildPlayletTagThemeNameMaps(ctx, playletmod.PlayletList{playletInfo})
	if err != nil {
		return nil, err
	}
	if err := applyOfficialChapterAccess(ctx, playletInfo, chapterList, ip); err != nil {
		return nil, err
	}
	return &proto.QueryPlayletInfoResp{
		FreeEpisodeCount:   playletInfo.EffectiveFreeEpisodeCount(),
		Path:               playletRequestPath(ctx),
		Translations:       translationser.GetTranslationData(),
		Config:             config,
		BottonTranslations: translationser.GetTranslationBottomList(),
		Advitise:           configser.GetAdvitise(),
		Announcement:       configser.GetAnnouncement(),
		PlayletInfo:        playletDetailInfoData(playletInfo, config.ImgCdn, tagNameMap, themeNameMap, isLike, isFavorite),
		ChapterList:        chapterList,
		IsLike:             isLike,
		IsFavorite:         isFavorite,
	}, nil
}

// QueryPlayletChapterInfo 查询短剧剧集详情、所属短剧、剧集列表、热门短剧列表和点赞状态
func QueryPlayletChapterInfo(ctx context.Context, userId int64, ip, ua string, req *proto.QueryPlayletChapterInfoReq) (*proto.QueryPlayletChapterInfoResp, *srvdef.SrvErr) {
	if req == nil || req.Id <= 0 {
		return nil, srvdef.New(srvdef.ErrParamError, "", "")
	}
	config := configser.GetRequestConfig(ctx)
	chapterInfo, err := playletchaptermod.FindOnePlayletChapter(ctx, bson.M{
		playletchaptermod.FN.PlayletChapter.Id: req.Id,
	}, options.FindOne().SetProjection(playletChapterProjection()))
	if err != nil {
		return nil, err
	}
	playletInfo, err := playletmod.FindOnePlaylet(ctx, bson.M{
		playletmod.FN.Playlet.Id:     chapterInfo.PlayletId,
		playletmod.FN.Playlet.Status: playletmod.StatusUp,
	}, options.FindOne().SetProjection(appPlayletRecommendProjection))
	if err != nil {
		return nil, err
	}
	if !playletInfo.IsOfficialEpisodeOpen(chapterInfo.CurrentEpisode) {
		return nil, srvdef.New(srvdef.ErrNoData, "本集暂未在官网开放", "")
	}
	if err = ensureOriginalChapterWatermarkReady(playletInfo, chapterInfo); err != nil {
		return nil, err
	}
	go incrementPlayletWatchCount(playletInfo)
	go incrementPlayletChapterWatchCount(chapterInfo.Id)

	hotPlayletList, chapterList, isLike, err := queryPlayletChapterDetailExtraData(ctx, userId, playletInfo, ip, ua)
	if err != nil {
		return nil, err
	}
	isFavorite, err := queryPlayletIsFavorite(ctx, userId, playletInfo.Id)
	if err != nil {
		return nil, err
	}
	allList := make(playletmod.PlayletList, 0, len(hotPlayletList)+1)
	allList = append(allList, playletInfo)
	allList = append(allList, hotPlayletList...)
	tagNameMap, themeNameMap, err := buildPlayletTagThemeNameMaps(ctx, allList)
	if err != nil {
		return nil, err
	}
	chapterData := make([]proto.PlayletChapterInfo, 0, len(chapterList)+1)
	chapterData = append(chapterData, chapterList...)
	chapterData = append(chapterData, playletChapterToInfo(chapterInfo, ip, ua, isOriginalPlaylet(playletInfo)))
	if err := applyOfficialChapterAccess(ctx, playletInfo, chapterData, ip); err != nil {
		return nil, err
	}
	return &proto.QueryPlayletChapterInfoResp{
		FreeEpisodeCount:   playletInfo.EffectiveFreeEpisodeCount(),
		Path:               playletRequestPath(ctx),
		Translations:       translationser.GetTranslationData(),
		Config:             config,
		BottonTranslations: translationser.GetTranslationBottomList(),
		Advitise:           configser.GetAdvitise(),
		Announcement:       configser.GetAnnouncement(),
		ChapterInfo:        chapterData[len(chapterData)-1],
		PlayletInfo:        playletToAppData(playletInfo, config.ImgCdn, tagNameMap, themeNameMap),
		ChapterList:        chapterData[:len(chapterData)-1],
		HotPlayletList:     playletListToAppData(hotPlayletList, config.ImgCdn, tagNameMap, themeNameMap),
		IsLike:             isLike,
		IsFavorite:         isFavorite,
	}, nil
}

func applyOfficialChapterAccess(ctx context.Context, playlet *playletmod.Playlet, chapters []proto.PlayletChapterInfo, ip string) *srvdef.SrvErr {
	if len(chapters) == 0 {
		return nil
	}
	ids := make([]int64, 0, len(chapters))
	for i := range chapters {
		ids = append(ids, chapters[i].Id)
	}
	raw, err := playletchaptermod.FindManyPlayletChapter(ctx, bson.M{
		playletchaptermod.FN.PlayletChapter.Id:        bson.M{"$in": ids},
		playletchaptermod.FN.PlayletChapter.PlayletId: playlet.Id,
	})
	if err != nil {
		return err
	}
	byID := make(map[int64]*playletchaptermod.PlayletChapter, len(raw))
	for _, chapter := range raw {
		byID[chapter.Id] = chapter
	}
	for i := range chapters {
		chapter := byID[chapters[i].Id]
		open := chapter != nil && playlet.IsOfficialEpisodeOpen(chapter.CurrentEpisode)
		chapters[i].IsOfficialOpen = &open
		chapters[i].VideoUrl = ""
		if !open {
			continue
		}
		url, useNewKey := chapterPlaySource(chapter, isOriginalPlaylet(playlet))
		if url != "" {
			chapters[i].VideoUrl = videoser.GetM3U8OfficialParam(chapter.Id, playlet.Id, url, ip, useNewKey)
		}
	}
	return nil
}

// LikePlaylet 当前登录用户点赞或取消点赞指定短剧
func LikePlaylet(ctx context.Context, userId int64, ip string, ua useragent.UA, req *proto.LikePlayletReq) (*proto.LikePlayletResp, *srvdef.SrvErr) {
	if req == nil || userId <= 0 || req.Id <= 0 || req.IsLike == nil {
		return nil, srvdef.New(srvdef.ErrParamError, "", "")
	}
	playletInfo, err := playletmod.FindOnePlaylet(ctx, bson.M{
		playletmod.FN.Playlet.Id:     req.Id,
		playletmod.FN.Playlet.Status: playletmod.StatusUp,
	}, options.FindOne().SetProjection(bson.M{
		playletmod.FN.Playlet.Id:               1,
		playletmod.FN.Playlet.Title:            1,
		playletmod.FN.Playlet.Slug:             1,
		playletmod.FN.Playlet.ThemeIds:         1,
		playletmod.FN.Playlet.TagIds:           1,
		playletmod.FN.Playlet.TotalEpisode:     1,
		playletmod.FN.Playlet.CountLike:        1,
		playletmod.FN.Playlet.VirtualCountLike: 1,
	}))
	if err != nil {
		return nil, err
	}
	if *req.IsLike {
		created, err := playletlikemod.UpsertOnePlayletLike(ctx, userId, req.Id, time.Now())
		if err != nil {
			return nil, err
		}
		if created {
			playletInfo.CountLike++
			if err := playletmod.UpdateOnePlaylet(ctx, bson.M{playletmod.FN.Playlet.Id: req.Id}, bson.M{"$inc": bson.M{playletmod.FN.Playlet.CountLike: 1}}); err != nil {
				return nil, err
			}
			if err := reportser.ReportPlayletLike(userId, ua, ip, playletInfo, 1); err != nil {
				log.Warn("ReportPlayletLike failed", log.Any("playletId", req.Id), log.Any("userId", userId), log.E(err))
			}
		}
	} else {
		deleted, err := playletlikemod.DeleteOnePlayletLike(ctx, bson.M{
			playletlikemod.FN.PlayletLike.UserID:    userId,
			playletlikemod.FN.PlayletLike.PlayletID: req.Id,
		})
		if err != nil {
			return nil, err
		}
		if deleted {
			if playletInfo.CountLike > 0 {
				playletInfo.CountLike--
				if err := playletmod.UpdateOnePlaylet(ctx, bson.M{playletmod.FN.Playlet.Id: req.Id}, bson.M{"$inc": bson.M{playletmod.FN.Playlet.CountLike: -1}}); err != nil {
					return nil, err
				}
			}
			if err := reportser.ReportPlayletLike(userId, ua, ip, playletInfo, 2); err != nil {
				log.Warn("ReportPlayletLike failed", log.Any("playletId", req.Id), log.Any("userId", userId), log.E(err))
			}
		}
	}
	return &proto.LikePlayletResp{
		Id:      req.Id,
		IsLike:  *req.IsLike,
		LikeNum: playletInfo.CountLike,
	}, nil
}

// QueryPlayletRank 分页查询短剧排行榜，读取独立的 10 分钟内存缓存。
// 点赞榜按累计点赞量、周/月/年榜按对应周期观看量取前 50；不足时随机补位。分页 pageSize 不是 50 时强制为 50。
func QueryPlayletRank(ctx context.Context, req *proto.PlayletRankReq) (*proto.PlayletRankResp, *srvdef.SrvErr) {
	if req == nil {
		return nil, srvdef.New(srvdef.ErrParamError, "", "")
	}
	period := proto.PlayletRankPeriod(req.RankPeriod)
	if period < proto.PlayletRankPeriodLike || period > proto.PlayletRankPeriodYear {
		return nil, srvdef.New(srvdef.ErrParamError, "", "")
	}
	pageNum, pageSize := configser.NormalizeRankPage(req.PageNum, req.PageSize)
	all := configser.GetPlayletRankList(configser.RankPeriod(period), 0)
	items := configser.SliceRankPage(all, pageNum, pageSize)
	return &proto.PlayletRankResp{BasePageResp: response.BasePageResp{
		TotalCount: int64(len(all)),
		PageSize:   int(pageSize),
		PageNum:    int(pageNum),
		List:       items,
	}, Translations: translationser.GetTranslationData(), BottonTranslations: translationser.GetTranslationBottomList()}, nil
}

// HomePlayletData 查询首页推荐、最新、最热三组短剧数据
func HomePlayletData(ctx context.Context, imgCdn string) (proto.HomePlayletDataResp, *srvdef.SrvErr) {
	resp := proto.HomePlayletDataResp{
		RecommendList: make([]proto.PlayletData, 0),
		NewestList:    make([]proto.PlayletData, 0),
		HotList:       make([]proto.PlayletData, 0),
	}
	var (
		recommendList playletmod.PlayletList
		newestList    playletmod.PlayletList
		hotList       playletmod.PlayletList
		wg            sync.WaitGroup
		mu            sync.Mutex
		err1          *srvdef.SrvErr
	)
	setErr := func(err *srvdef.SrvErr) {
		if err == nil {
			return
		}
		mu.Lock()
		defer mu.Unlock()
		if err1 == nil {
			err1 = err
		}
	}
	queryList := func(sortType proto.PlayletRecommendSort, target *playletmod.PlayletList) {
		defer wg.Done()
		filter, sort := playletRecommendFilterAndSort(0, 0, int64(sortType))
		list, err := findPlayletRecommendPage(ctx, filter, sort, 0, homePlayletListLimit)
		if err != nil {
			setErr(err)
			return
		}
		*target = list
	}
	wg.Add(3)
	go queryList(proto.PlayletRecommendSortRecommend, &recommendList)
	go queryList(proto.PlayletRecommendSortNewest, &newestList)
	go queryList(proto.PlayletRecommendSortHot, &hotList)
	wg.Wait()
	if err1 != nil {
		return resp, err1
	}
	allList := make(playletmod.PlayletList, 0, len(recommendList)+len(newestList)+len(hotList))
	allList = append(allList, recommendList...)
	allList = append(allList, newestList...)
	allList = append(allList, hotList...)
	tagNameMap, themeNameMap, err := buildPlayletTagThemeNameMaps(ctx, allList)
	if err != nil {
		return resp, err
	}
	resp.RecommendList = playletListToAppData(recommendList, imgCdn, tagNameMap, themeNameMap)
	resp.NewestList = playletListToAppData(newestList, imgCdn, tagNameMap, themeNameMap)
	resp.HotList = playletListToAppData(hotList, imgCdn, tagNameMap, themeNameMap)
	return resp, nil
}

// playletRecommendFilterAndSort 根据排序枚举构建短剧查询条件和排序规则
func playletRecommendFilterAndSort(tagId, categoryId, sortList int64) (bson.M, bson.D) {
	filter := bson.M{
		playletmod.FN.Playlet.Status: playletmod.StatusUp,
	}
	if tagId > 0 {
		filter[playletmod.FN.Playlet.TagIds] = tagId
	}
	if categoryId > 0 {
		filter[playletmod.FN.Playlet.CategoryIds] = bson.M{"$in": []int64{categoryId}}
	}
	switch proto.PlayletRecommendSort(sortList) {
	case proto.PlayletRecommendSortNewest:
		return filter, bson.D{
			{Key: playletmod.FN.Playlet.UpdatedAt, Value: -1},
			{Key: playletmod.FN.Playlet.Id, Value: -1},
		}
	case proto.PlayletRecommendSortHot:
		return filter, bson.D{
			{Key: playletmod.FN.Playlet.CountBrowse, Value: -1},
			{Key: playletmod.FN.Playlet.UpdatedAt, Value: -1},
			{Key: playletmod.FN.Playlet.Id, Value: -1},
		}
	default:
		if categoryId <= 0 {
			filter[playletmod.FN.Playlet.IsRecommend] = true
		} else {
			return filter, playletmod.CategoryRankSort()
		}
		return filter, bson.D{
			{Key: playletmod.FN.Playlet.RecommendRank, Value: -1},
			{Key: playletmod.FN.Playlet.CreatedAt, Value: -1},
			{Key: playletmod.FN.Playlet.Id, Value: -1},
		}
	}
}

// findPlayletRecommendPage 查询当前混排分页需要的短剧数据
func findPlayletRecommendPage(ctx context.Context, filter bson.M, sort bson.D, skip, limit int64, categoryIds ...int64) (playletmod.PlayletList, *srvdef.SrvErr) {
	if len(categoryIds) > 0 && categoryIds[0] > 0 && len(sort) > 0 && sort[0].Key == "_categoryRank" {
		return playletmod.FindManyPlayletByCategoryRank(ctx, filter, categoryIds[0], skip, limit, sort, appPlayletRecommendProjection)
	}
	computedSort := make(bson.D, len(sort))
	copy(computedSort, sort)
	addFields := bson.M{}
	for i := range computedSort {
		switch computedSort[i].Key {
		case playletmod.FN.Playlet.CountBrowse:
			computedSort[i].Key = "displayCountBrowse"
			addFields["displayCountBrowse"] = bson.M{"$add": []interface{}{
				bson.M{"$ifNull": []interface{}{"$" + playletmod.FN.Playlet.CountBrowse, 0}},
				bson.M{"$ifNull": []interface{}{"$" + playletmod.FN.Playlet.VirtualCountBrowse, 0}},
			}}
		case playletmod.FN.Playlet.HeatValue:
			computedSort[i].Key = "displayHeatValue"
			addFields["displayHeatValue"] = bson.M{"$add": []interface{}{
				bson.M{"$ifNull": []interface{}{"$" + playletmod.FN.Playlet.HeatValue, 0}},
				bson.M{"$ifNull": []interface{}{"$" + playletmod.FN.Playlet.VirtualHeatValue, 0}},
			}}
		}
	}
	if len(addFields) > 0 {
		list := make(playletmod.PlayletList, 0)
		pipeline := []bson.M{
			{"$match": filter},
			{"$addFields": addFields},
			{"$sort": computedSort},
			{"$skip": skip},
			{"$limit": limit},
			{"$project": appPlayletRecommendProjection},
		}
		if err := playletmod.AggregatePlaylet(ctx, &list, pipeline, options.Aggregate().SetAllowDiskUse(true)); err != nil {
			return nil, err
		}
		return list, nil
	}
	return playletmod.FindManyPlaylet(ctx, filter, options.Find().
		SetProjection(appPlayletRecommendProjection).
		SetSort(sort).
		SetSkip(skip).
		SetLimit(limit))
}

// playletListToAppData 批量转换短剧模型为 app 短剧数据
func playletListToAppData(list playletmod.PlayletList, imgCdn string, tagNameMap contenttagmod.ContentTagMap, themeNameMap map[int64]string) []proto.PlayletData {
	result := make([]proto.PlayletData, 0, len(list))
	for _, item := range list {
		if item == nil {
			continue
		}
		result = append(result, playletToAppData(item, imgCdn, tagNameMap, themeNameMap))
	}
	return result
}

// playletRecommendListWithoutAds 无广告时直接按短剧分页查询
func playletRecommendListWithoutAds(ctx context.Context, filter bson.M, sort bson.D, categoryId, pageNum, pageSize, totalCount int64, imgCdn string) (*proto.PlayletRecommendListResp, *srvdef.SrvErr) {
	list, err := findPlayletRecommendPage(ctx, filter, sort, (pageNum-1)*pageSize, pageSize, categoryId)
	if err != nil {
		return nil, err
	}
	tagNameMap, themeNameMap, err := buildPlayletTagThemeNameMaps(ctx, list)
	if err != nil {
		return nil, err
	}
	items := make([]*proto.PlayletRecommendListItem, 0, len(list))
	for _, item := range list {
		if item == nil {
			continue
		}
		items = append(items, playletToRecommendListItem(item, imgCdn, tagNameMap, themeNameMap))
	}
	return &proto.PlayletRecommendListResp{BasePageResp: response.BasePageResp{
		TotalCount: totalCount,
		PageSize:   int(pageSize),
		PageNum:    int(pageNum),
		List:       items,
	}}, nil
}

// buildPlayletRecommendMixedList 按混排后的全局位置切出当前页短剧和广告数据
func buildPlayletRecommendMixedList(list playletmod.PlayletList, ads []proxy.AdvitiseInfo, imgCdn string, tagNameMap contenttagmod.ContentTagMap, themeNameMap map[int64]string, start, end, contentStart, adsTotal int64) []*proto.PlayletRecommendListItem {
	items := make([]*proto.PlayletRecommendListItem, 0, end-start)
	contentByIndex := make(map[int64]*playletmod.Playlet, len(list))
	for i, item := range list {
		contentByIndex[contentStart+int64(i)] = item
	}
	for pos := start; pos < end; pos++ {
		adIndex := moreser.AdIndexAtPositionWithoutTotal(pos, adsTotal, playletRecommendAdInterval)
		if adIndex >= 0 && adIndex < adsTotal {
			items = append(items, playletAdToRecommendListItem(ads[adIndex], imgCdn))
			continue
		}
		contentIndex := moreser.ContentIndexAtPositionWithoutTotal(pos, adsTotal, playletRecommendAdInterval)
		if item := contentByIndex[contentIndex]; item != nil {
			items = append(items, playletToRecommendListItem(item, imgCdn, tagNameMap, themeNameMap))
		}
	}
	return items
}

// playletToRecommendListItem 将短剧模型转换为 app 推荐短剧列表项
func playletToRecommendListItem(item *playletmod.Playlet, imgCdn string, tagNameMap contenttagmod.ContentTagMap, themeNameMap map[int64]string) *proto.PlayletRecommendListItem {
	return &proto.PlayletRecommendListItem{
		Type:        proto.PlayletRecommendItemTypePlaylet,
		PlayletData: playletToAppData(item, imgCdn, tagNameMap, themeNameMap),
	}
}

// playletAdToRecommendListItem 将广告转换为 app 推荐短剧列表项
func playletAdToRecommendListItem(ad proxy.AdvitiseInfo, imgCdn string) *proto.PlayletRecommendListItem {
	return &proto.PlayletRecommendListItem{
		Type:        proto.PlayletRecommendItemTypeAdvertise,
		AdvertiseId: ad.Id,
		Link:        ad.Link,
		Location:    ad.Location,
		PlayletData: proto.PlayletData{
			Title: ad.Title,
			Cover: netutil.MergeURL(imgCdn, ad.Images),
		},
	}
}

// queryPlayletDetailExtraData 并发查询详情页附加数据，缩短详情接口整体等待时间
func queryPlayletDetailExtraData(ctx context.Context, userId int64, playletInfo *playletmod.Playlet, ip, ua string) ([]proto.PlayletChapterInfo, bool, *srvdef.SrvErr) {
	var wg sync.WaitGroup
	var mu sync.Mutex
	var firstErr *srvdef.SrvErr
	chapterList := make([]proto.PlayletChapterInfo, 0)
	isLike := false
	setErr := func(err *srvdef.SrvErr) {
		if err == nil {
			return
		}
		mu.Lock()
		if firstErr == nil {
			firstErr = err
		}
		mu.Unlock()
	}

	wg.Add(2)
	go func() {
		defer wg.Done()
		data, err := queryPlayletChapterList(ctx, playletInfo.Id, ip, ua, isOriginalPlaylet(playletInfo))
		if err != nil {
			setErr(err)
			return
		}
		mu.Lock()
		chapterList = data
		mu.Unlock()
	}()
	go func() {
		defer wg.Done()
		data, err := queryPlayletIsLike(ctx, userId, playletInfo.Id)
		if err != nil {
			setErr(err)
			return
		}
		mu.Lock()
		isLike = data
		mu.Unlock()
	}()
	wg.Wait()
	if firstErr != nil {
		return nil, false, firstErr
	}
	return chapterList, isLike, nil
}

// queryPlayletChapterDetailExtraData 并发查询剧集详情页附加数据，热门短剧只按相同分类查询且不做兜底
func queryPlayletChapterDetailExtraData(ctx context.Context, userId int64, playletInfo *playletmod.Playlet, ip, ua string) (playletmod.PlayletList, []proto.PlayletChapterInfo, bool, *srvdef.SrvErr) {
	var wg sync.WaitGroup
	var mu sync.Mutex
	var firstErr *srvdef.SrvErr
	hotPlayletList := make(playletmod.PlayletList, 0)
	chapterList := make([]proto.PlayletChapterInfo, 0)
	isLike := false
	setErr := func(err *srvdef.SrvErr) {
		if err == nil {
			return
		}
		mu.Lock()
		if firstErr == nil {
			firstErr = err
		}
		mu.Unlock()
	}

	wg.Add(3)
	go func() {
		defer wg.Done()
		data, err := queryPlayletChapterDetailHotList(ctx, playletInfo)
		if err != nil {
			setErr(err)
			return
		}
		mu.Lock()
		hotPlayletList = data
		mu.Unlock()
	}()
	go func() {
		defer wg.Done()
		data, err := queryPlayletChapterList(ctx, playletInfo.Id, ip, ua, isOriginalPlaylet(playletInfo))
		if err != nil {
			setErr(err)
			return
		}
		mu.Lock()
		chapterList = data
		mu.Unlock()
	}()
	go func() {
		defer wg.Done()
		data, err := queryPlayletIsLike(ctx, userId, playletInfo.Id)
		if err != nil {
			setErr(err)
			return
		}
		mu.Lock()
		isLike = data
		mu.Unlock()
	}()
	wg.Wait()
	if firstErr != nil {
		return nil, nil, false, firstErr
	}
	return hotPlayletList, chapterList, isLike, nil
}

// incrementPlayletWatchCount 异步增加短剧浏览、热度和周/月/年窗口观看数。
// 周/月/年窗口按北京时间切：周一 00:00、每月 1 日 00:00、每年 1 月 1 日 00:00。
func incrementPlayletWatchCount(playletInfo *playletmod.Playlet) {
	if playletInfo == nil {
		return
	}
	now := utils.Now()
	incDoc := bson.M{
		playletmod.FN.Playlet.CountBrowse: 1,
		playletmod.FN.Playlet.HeatValue:   1,
	}
	setDoc := bson.M{
		playletmod.FN.Playlet.WatchUpdatedAt: now,
	}
	if playletInfo.WatchUpdatedAt.After(utils.BeginOfWeekByTime(now)) {
		incDoc[playletmod.FN.Playlet.WeekWatchs] = 1
	} else {
		setDoc[playletmod.FN.Playlet.WeekWatchs] = 1
	}
	if playletInfo.WatchUpdatedAt.After(utils.BeginOfMonth(now)) {
		incDoc[playletmod.FN.Playlet.MonthWatchs] = 1
	} else {
		setDoc[playletmod.FN.Playlet.MonthWatchs] = 1
	}
	if playletInfo.WatchUpdatedAt.After(utils.BeginOfYear(now)) {
		incDoc[playletmod.FN.Playlet.YearWatchs] = 1
	} else {
		setDoc[playletmod.FN.Playlet.YearWatchs] = 1
	}
	if err := playletmod.UpdateOnePlaylet(context.Background(), bson.M{
		playletmod.FN.Playlet.Id: playletInfo.Id,
	}, bson.M{"$set": setDoc, "$inc": incDoc}); err != nil {
		log.Warn("incrementPlayletWatchCount failed", log.Any("playletId", playletInfo.Id), log.E(err))
	}
}

// incrementPlayletChapterWatchCount 异步增加短剧剧集浏览数，避免阻塞剧集详情读取
func incrementPlayletChapterWatchCount(chapterId int64) {
	if chapterId <= 0 {
		return
	}
	if err := playletchaptermod.UpdateOnePlayletChapter(context.Background(), bson.M{
		playletchaptermod.FN.PlayletChapter.Id: chapterId,
	}, bson.M{"$inc": bson.M{
		playletchaptermod.FN.PlayletChapter.CountBrowse: 1,
	}}); err != nil {
		log.Warn("更新短剧剧集浏览数失败", log.Any("chapterId", chapterId), log.E(err))
	}
}

// queryPlayletChapterDetailHotList 查询剧集详情页热门短剧，按相同分类、累计点击量、更新时间排序，最多返回11条
func queryPlayletChapterDetailHotList(ctx context.Context, playletInfo *playletmod.Playlet) (playletmod.PlayletList, *srvdef.SrvErr) {
	filter := bson.M{
		playletmod.FN.Playlet.Id:     bson.M{"$ne": playletInfo.Id},
		playletmod.FN.Playlet.Status: playletmod.StatusUp,
	}
	if len(playletInfo.CategoryIds) > 0 {
		filter[playletmod.FN.Playlet.CategoryIds] = bson.M{"$in": playletInfo.CategoryIds}
	}
	return findPlayletRecommendPage(ctx, filter, bson.D{
		{Key: playletmod.FN.Playlet.CountBrowse, Value: -1},
		{Key: playletmod.FN.Playlet.UpdatedAt, Value: -1},
		{Key: playletmod.FN.Playlet.Id, Value: -1},
	}, 0, playletDetailHotLimit)
}

// queryPlayletChapterList 查询短剧剧集列表，并按集数升序返回。
// 原创短剧只返回已有水印地址的剧集：首次未处理好的不露出，换水印期间仍可播旧地址。
func queryPlayletChapterList(ctx context.Context, playletId int64, ip, ua string, isOriginal bool) ([]proto.PlayletChapterInfo, *srvdef.SrvErr) {
	filter := bson.M{
		playletchaptermod.FN.PlayletChapter.PlayletId: playletId,
	}
	if isOriginal {
		// 必须含非空白水印地址；空串、空白、缺字段都排除
		filter[playletchaptermod.FN.PlayletChapter.WatermarkVideoUrl] = bson.M{"$regex": "\\S"}
	}
	list, err := playletchaptermod.FindManyPlayletChapter(ctx, filter, options.Find().
		SetProjection(playletChapterProjection()).
		SetSort(bson.D{
			{Key: playletchaptermod.FN.PlayletChapter.CurrentEpisode, Value: 1},
			{Key: playletchaptermod.FN.PlayletChapter.Id, Value: 1},
		}))
	if err != nil {
		return nil, err
	}
	data := make([]proto.PlayletChapterInfo, 0, len(list))
	for _, item := range list {
		if item == nil {
			continue
		}
		if isOriginal && strings.TrimSpace(item.WatermarkVideoUrl) == "" {
			continue
		}
		data = append(data, playletChapterToInfo(item, ip, ua, isOriginal))
	}
	return data, nil
}

// playletChapterProjection 限定详情页剧集字段，避免返回整条剧集文档
func playletChapterProjection() bson.M {
	return bson.M{
		playletchaptermod.FN.PlayletChapter.Id:                1,
		playletchaptermod.FN.PlayletChapter.PlayletId:         1,
		playletchaptermod.FN.PlayletChapter.MediaContentId:    1,
		playletchaptermod.FN.PlayletChapter.CurrentEpisode:    1,
		playletchaptermod.FN.PlayletChapter.Title:             1,
		playletchaptermod.FN.PlayletChapter.Md5:               1,
		playletchaptermod.FN.PlayletChapter.Hash:              1,
		playletchaptermod.FN.PlayletChapter.Height:            1,
		playletchaptermod.FN.PlayletChapter.Width:             1,
		playletchaptermod.FN.PlayletChapter.Ratio:             1,
		playletchaptermod.FN.PlayletChapter.VideoUrl:          1,
		playletchaptermod.FN.PlayletChapter.WatermarkVideoUrl: 1,
		playletchaptermod.FN.PlayletChapter.MediaSize:         1,
		playletchaptermod.FN.PlayletChapter.MediaTime:         1,
		playletchaptermod.FN.PlayletChapter.CountBrowse:       1,
		playletchaptermod.FN.PlayletChapter.CountCollect:      1,
		playletchaptermod.FN.PlayletChapter.CountLike:         1,
		playletchaptermod.FN.PlayletChapter.CountComment:      1,
		playletchaptermod.FN.PlayletChapter.PayType:           1,
		playletchaptermod.FN.PlayletChapter.SingleCoins:       1,
		playletchaptermod.FN.PlayletChapter.WatermarkStatus:   1,
		playletchaptermod.FN.PlayletChapter.CreatedAt:         1,
		playletchaptermod.FN.PlayletChapter.UpdatedAt:         1,
	}
}

// playletChapterToInfo 将短剧剧集模型转换为详情页剧集数据。
// 原创短剧只下水印地址，避免未处理好的剧集回退成原片地址。
func playletChapterToInfo(item *playletchaptermod.PlayletChapter, ip, ua string, isOriginal bool) proto.PlayletChapterInfo {
	_ = ua
	videoURL, useNewKey := chapterPlaySource(item, isOriginal)
	if videoURL != "" {
		videoURL = videoser.GetPlayletM3U8AuthParam(item.Id, videoURL, ip, useNewKey)
	}
	return proto.PlayletChapterInfo{
		Id:              item.Id,
		PlayletId:       item.PlayletId,
		MediaContentId:  item.MediaContentId,
		CurrentEpisode:  item.CurrentEpisode,
		Title:           item.Title,
		Md5:             item.Md5,
		Hash:            item.Hash,
		Height:          item.Height,
		Width:           item.Width,
		Ratio:           item.Ratio,
		VideoUrl:        videoURL,
		MediaSize:       item.MediaSize,
		MediaTime:       item.MediaTime,
		CountBrowse:     item.CountBrowse,
		CountCollect:    item.CountCollect,
		CountLike:       item.CountLike,
		CountComment:    item.CountComment,
		PayType:         item.PayType,
		SingleCoins:     item.SingleCoins,
		WatermarkStatus: item.WatermarkStatus,
		CreatedAt:       item.CreatedAt,
		UpdatedAt:       item.UpdatedAt,
	}
}

// chapterPlaySource 优先用水印地址。没有水印时，非原创短剧回退原片，并标记使用原片密钥。
func chapterPlaySource(chapter *playletchaptermod.PlayletChapter, isOriginal bool) (string, bool) {
	if chapter == nil {
		return "", false
	}
	if url := strings.TrimSpace(chapter.WatermarkVideoUrl); url != "" {
		return url, false
	}
	if isOriginal {
		return "", false
	}
	url := strings.TrimSpace(chapter.VideoUrl)
	return url, url != ""
}

// isOriginalPlaylet 判断是否原创短剧。
// 后台新增剧没有媒资ID；历史数据可能缺 isOriginal 字段，按无媒资ID兜底。
func isOriginalPlaylet(playlet *playletmod.Playlet) bool {
	if playlet == nil {
		return false
	}
	return playlet.IsOriginal || playlet.MediaCenterId == 0
}

// ensureOriginalChapterWatermarkReady 原创剧集必须已有水印地址才允许播放。
func ensureOriginalChapterWatermarkReady(playlet *playletmod.Playlet, chapter *playletchaptermod.PlayletChapter) *srvdef.SrvErr {
	if !isOriginalPlaylet(playlet) || chapter == nil {
		return nil
	}
	if strings.TrimSpace(chapter.WatermarkVideoUrl) != "" {
		return nil
	}
	return srvdef.New(srvdef.ErrNoData, "剧集处理中，请稍后观看", "剧集处理中，请稍后观看")
}

// queryPlayletIsLike 判断当前登录用户是否已点赞该短剧，未登录直接返回 false
func queryPlayletIsLike(ctx context.Context, userId, playletId int64) (bool, *srvdef.SrvErr) {
	if userId <= 0 {
		return false, nil
	}
	count, err := playletlikemod.CountPlayletLike(ctx, bson.M{
		playletlikemod.FN.PlayletLike.UserID:    userId,
		playletlikemod.FN.PlayletLike.PlayletID: playletId,
	})
	if err != nil {
		return false, err
	}
	return count > 0, nil
}

// playletDetailInfoData 将短剧模型转换为详情页专用响应结构
func playletDetailInfoData(item *playletmod.Playlet, imgCdn string, tagNameMap contenttagmod.ContentTagMap, themeNameMap map[int64]string, isLike, isFavorite bool) proto.PlayletDetailInfo {
	return proto.PlayletDetailInfo{
		PlayletData:  playletToAppData(item, imgCdn, tagNameMap, themeNameMap),
		CountComment: item.CountComment,
		IsLike:       isLike,
		IsFavorite:   isFavorite,
	}
}

// queryPlayletIsFavorite 判断当前用户是否已收藏短剧，未登录返回 false
func queryPlayletIsFavorite(ctx context.Context, userID, playletID int64) (bool, *srvdef.SrvErr) {
	if userID <= 0 {
		return false, nil
	}
	count, err := playletfavoritemod.Count(ctx, bson.M{playletfavoritemod.FieldUserID: userID, playletfavoritemod.FieldPlayletID: playletID})
	return count > 0, err
}

// countPlayletTotalLikeRank 统计累计点赞榜可展示短剧数量
func countPlayletTotalLikeRank(ctx context.Context) (int64, *srvdef.SrvErr) {
	rows := make([]playletRankCount, 0)
	if err := playletmod.AggregatePlaylet(ctx, &rows, playletTotalLikeRankCountPipeline()); err != nil {
		return 0, err
	}
	if len(rows) == 0 {
		return 0, nil
	}
	return rows[0].Total, nil
}

// aggregatePlayletTotalLikeRank 分页查询累计点赞榜短剧
func aggregatePlayletTotalLikeRank(ctx context.Context, skip, limit int64) ([]playletRankAggItem, *srvdef.SrvErr) {
	list := make([]playletRankAggItem, 0)
	if err := playletmod.AggregatePlaylet(ctx, &list, playletTotalLikeRankPagePipeline(skip, limit)); err != nil {
		return nil, err
	}
	return list, nil
}

// countPlayletPeriodLikeRank 统计周期新增点赞榜可展示短剧数量
func countPlayletPeriodLikeRank(ctx context.Context, since time.Time) (int64, *srvdef.SrvErr) {
	rows := make([]playletRankCount, 0)
	if err := playletlikemod.AggregatePlayletLike(ctx, &rows, playletPeriodLikeRankCountPipeline(since)); err != nil {
		return 0, err
	}
	if len(rows) == 0 {
		return 0, nil
	}
	return rows[0].Total, nil
}

// aggregatePlayletPeriodLikeRank 分页查询周期新增点赞榜短剧
func aggregatePlayletPeriodLikeRank(ctx context.Context, since time.Time, skip, limit int64) ([]playletRankAggItem, *srvdef.SrvErr) {
	list := make([]playletRankAggItem, 0)
	if err := playletlikemod.AggregatePlayletLike(ctx, &list, playletPeriodLikeRankPagePipeline(since, skip, limit)); err != nil {
		return nil, err
	}
	return list, nil
}

// playletRankPeriodSince 将排行榜周期转换为点赞起始时间
func playletRankPeriodSince(period proto.PlayletRankPeriod) time.Time {
	now := time.Now()
	switch period {
	case proto.PlayletRankPeriodWeek:
		return now.AddDate(0, 0, -7)
	case proto.PlayletRankPeriodMonth:
		return now.AddDate(0, -1, 0)
	case proto.PlayletRankPeriodYear:
		return now.AddDate(-1, 0, 0)
	default:
		return time.Time{}
	}
}

// playletTotalLikeRankCountPipeline 构建累计点赞榜数量统计管道
func playletTotalLikeRankCountPipeline() []bson.M {
	return append(playletTotalLikeRankBasePipeline(), bson.M{"$count": "total"})
}

// playletTotalLikeRankPagePipeline 构建累计点赞榜分页查询管道
func playletTotalLikeRankPagePipeline(skip, limit int64) []bson.M {
	pipeline := playletTotalLikeRankBasePipeline()
	pipeline = append(pipeline,
		bson.M{"$sort": bson.D{
			{Key: "rankScore", Value: -1},
			{Key: playletmod.FN.Playlet.UpdatedAt, Value: -1},
			{Key: playletmod.FN.Playlet.Id, Value: -1},
		}},
		bson.M{"$skip": skip},
		bson.M{"$limit": limit},
		bson.M{"$project": playletRankProjection()},
	)
	return pipeline
}

// playletTotalLikeRankBasePipeline 构建累计点赞榜基础过滤管道
func playletTotalLikeRankBasePipeline() []bson.M {
	return []bson.M{
		{"$match": bson.M{playletmod.FN.Playlet.Status: playletmod.StatusUp}},
		{"$addFields": bson.M{"rankScore": bson.M{"$add": []interface{}{
			bson.M{"$ifNull": []interface{}{"$" + playletmod.FN.Playlet.CountLike, 0}},
			bson.M{"$ifNull": []interface{}{"$" + playletmod.FN.Playlet.VirtualCountLike, 0}},
		}}}},
		{"$match": bson.M{"rankScore": bson.M{"$gt": 0}}},
	}
}

// playletPeriodLikeRankCountPipeline 构建周期新增点赞榜数量统计管道
func playletPeriodLikeRankCountPipeline(since time.Time) []bson.M {
	return append(playletPeriodLikeRankBasePipeline(since), bson.M{"$count": "total"})
}

// playletPeriodLikeRankPagePipeline 构建周期新增点赞榜分页查询管道
func playletPeriodLikeRankPagePipeline(since time.Time, skip, limit int64) []bson.M {
	pipeline := playletPeriodLikeRankBasePipeline(since)
	pipeline = append(pipeline,
		bson.M{"$sort": bson.D{
			{Key: "rankScore", Value: -1},
			{Key: playletmod.FN.Playlet.UpdatedAt, Value: -1},
			{Key: playletmod.FN.Playlet.Id, Value: -1},
		}},
		bson.M{"$skip": skip},
		bson.M{"$limit": limit},
		bson.M{"$project": playletRankProjection()},
	)
	return pipeline
}

// playletPeriodLikeRankBasePipeline 构建周期新增点赞榜基础过滤管道
func playletPeriodLikeRankBasePipeline(since time.Time) []bson.M {
	return []bson.M{
		{"$match": bson.M{playletlikemod.FN.PlayletLike.CreatedAt: bson.M{"$gte": since}}},
		{"$group": bson.M{
			"_id":       "$" + playletlikemod.FN.PlayletLike.PlayletID,
			"rankScore": bson.M{"$sum": 1},
		}},
		{"$lookup": bson.M{
			"from":         playletmod.TN.Playlet,
			"localField":   "_id",
			"foreignField": playletmod.FN.Playlet.Id,
			"as":           "playlet",
		}},
		{"$unwind": "$playlet"},
		{"$match": bson.M{"playlet." + playletmod.FN.Playlet.Status: playletmod.StatusUp}},
		{"$replaceRoot": bson.M{"newRoot": bson.M{"$mergeObjects": []interface{}{"$playlet", bson.M{"rankScore": "$rankScore"}}}}},
	}
}

// playletRankProjection 限定排行榜返回字段，减少分页查询的数据传输体积
func playletRankProjection() bson.M {
	return bson.M{
		playletmod.FN.Playlet.Id:                  1,
		playletmod.FN.Playlet.Status:              1,
		playletmod.FN.Playlet.IsRecommend:         1,
		playletmod.FN.Playlet.OnlineAt:            1,
		playletmod.FN.Playlet.MediaCreatedAt:      1,
		playletmod.FN.Playlet.MediaUpdatedAt:      1,
		playletmod.FN.Playlet.Title:               1,
		playletmod.FN.Playlet.Slug:                1,
		playletmod.FN.Playlet.Desc:                1,
		playletmod.FN.Playlet.Anchor:              1,
		playletmod.FN.Playlet.Cover:               1,
		playletmod.FN.Playlet.CompressedCover:     1,
		playletmod.FN.Playlet.Preview:             1,
		playletmod.FN.Playlet.CategoryIds:         1,
		playletmod.FN.Playlet.TagIds:              1,
		playletmod.FN.Playlet.ThemeIds:            1,
		playletmod.FN.Playlet.ContentType:         1,
		playletmod.FN.Playlet.PayType:             1,
		playletmod.FN.Playlet.SingleCoins:         1,
		playletmod.FN.Playlet.TotalEpisode:        1,
		playletmod.FN.Playlet.UpdateStatus:        1,
		playletmod.FN.Playlet.CountBrowse:         1,
		playletmod.FN.Playlet.VirtualCountBrowse:  1,
		playletmod.FN.Playlet.HeatValue:           1,
		playletmod.FN.Playlet.VirtualHeatValue:    1,
		playletmod.FN.Playlet.CountCollect:        1,
		playletmod.FN.Playlet.CountLike:           1,
		playletmod.FN.Playlet.VirtualCountLike:    1,
		playletmod.FN.Playlet.SeoInfo.Title:       1,
		playletmod.FN.Playlet.SeoInfo.Description: 1,
		playletmod.FN.Playlet.SeoInfo.Keyworld:    1,
		playletmod.FN.Playlet.CreatedAt:           1,
		playletmod.FN.Playlet.UpdatedAt:           1,
		"rankScore":                               1,
	}
}

// playletRankAggItemsToPlayletList 将排行榜聚合数据转换为短剧列表，复用标签题材批量查询
func playletRankAggItemsToPlayletList(list []playletRankAggItem) playletmod.PlayletList {
	result := make(playletmod.PlayletList, 0, len(list))
	for i := range list {
		result = append(result, &list[i].Playlet)
	}
	return result
}

// playletRankToData 将排行榜聚合结果转换为榜单展示数据
func playletRankToData(item playletRankAggItem, imgCdn string, tagNameMap contenttagmod.ContentTagMap, themeNameMap map[int64]string) proto.PlayletRankData {
	return proto.PlayletRankData{
		PlayletData: playletToAppData(&item.Playlet, imgCdn, tagNameMap, themeNameMap),
		RankScore:   item.RankScore,
	}
}

// playletToAppData 将短剧模型转换为 app 短剧基础数据
func playletToAppData(item *playletmod.Playlet, imgCdn string, tagNameMap contenttagmod.ContentTagMap, themeNameMap map[int64]string) proto.PlayletData {
	if item == nil {
		return proto.PlayletData{}
	}
	return proto.PlayletData{
		Id:               item.Id,
		Status:           item.Status,
		IsRecommend:      item.IsRecommend,
		IsNew:            isNewPlaylet(item.OnlineAt),
		IsFeatured:       item.IsFeatured,
		IsOriginal:       isOriginalPlaylet(item),
		ShowOriginal:     item.ShowOriginal,
		OnlineAt:         item.OnlineAt,
		MediaCreatedAt:   item.MediaCreatedAt,
		MediaUpdatedAt:   item.MediaUpdatedAt,
		Title:            item.Title,
		Slug:             item.Slug,
		Desc:             item.Desc,
		Anchor:           item.Anchor,
		Cover:            netutil.MergeURL(imgCdn, item.DisplayCover()),
		Preview:          netutil.MergeURL(imgCdn, strings.TrimSpace(item.Preview)),
		TagIds:           item.TagIds,
		TagNames:         playletTagNamesFromMap(item.TagIds, tagNameMap),
		TagSlugs:         playletTagSlugsFromMap(item.TagIds, tagNameMap),
		ThemeIds:         item.ThemeIds,
		ThemeNames:       playletThemeNamesFromMap(item.ThemeIds, themeNameMap),
		ContentType:      item.ContentType,
		PayType:          item.PayType,
		SingleCoins:      item.SingleCoins,
		TotalEpisode:     item.TotalEpisode,
		UpdateStatus:     item.UpdateStatus,
		CountBrowse:      item.DisplayCountBrowse(),
		HeatValue:        item.DisplayHeatValue(),
		CountCollect:     item.CountCollect,
		CountLike:        item.CountLike,
		VirtualCountLike: item.VirtualCountLike,
		DisplayCountLike: item.CountLike + item.VirtualCountLike,
		CreatedAt:        item.CreatedAt,
		UpdatedAt:        item.UpdatedAt,
		SeoInfo:          normalizePlayletSeoValue(item.SeoInfo),
	}
}

type playletHistoryRow struct {
	ChapterID int64              `bson:"chapterId"`
	Episode   int64              `bson:"episode"`
	UpdatedAt time.Time          `bson:"updatedAt"`
	Playlet   playletmod.Playlet `bson:"playlet"`
}

// ReportPlayletHistory 校验上架短剧和剧集后写入当前用户观看历史
func ReportPlayletHistory(ctx context.Context, userID int64, req *proto.PlayletHistoryReportReq) (*proto.PlayletHistoryReportResp, *srvdef.SrvErr) {
	if userID <= 0 || req == nil || req.PlayletID <= 0 || req.ChapterID <= 0 {
		return nil, srvdef.New(srvdef.ErrParamError, "观看历史参数无效", "")
	}
	playlet, err := playletmod.FindOnePlaylet(ctx, bson.M{
		playletmod.FN.Playlet.Id: req.PlayletID, playletmod.FN.Playlet.Status: playletmod.StatusUp,
	})
	if err != nil {
		return nil, err
	}
	chapter, err := playletchaptermod.FindOnePlayletChapter(ctx, bson.M{
		playletchaptermod.FN.PlayletChapter.Id:        req.ChapterID,
		playletchaptermod.FN.PlayletChapter.PlayletId: req.PlayletID,
	})
	if err != nil {
		return nil, err
	}
	if !playlet.IsOfficialEpisodeOpen(chapter.CurrentEpisode) {
		return nil, srvdef.New(srvdef.ErrNoData, "本集暂未在官网开放", "")
	}
	if err := ensureOriginalChapterWatermarkReady(playlet, chapter); err != nil {
		return nil, err
	}
	if chapter.CurrentEpisode <= 0 || strings.TrimSpace(chapter.VideoUrl) == "" && strings.TrimSpace(chapter.WatermarkVideoUrl) == "" {
		return nil, srvdef.New(srvdef.ErrParamError, "剧集不可播放", "")
	}
	now := time.Now().UTC()
	if err := models.TouchWatchHistory(ctx, models.WatchHistory{
		UserID: userID, DataType: models.WatchHistoryTypePlaylet,
		ContentID: req.PlayletID, ChapterID: req.ChapterID, Episode: chapter.CurrentEpisode,
		CreatedAt: now, UpdatedAt: now,
	}); err != nil {
		return nil, err
	}
	return &proto.PlayletHistoryReportResp{WatchedAt: now}, nil
}

// QueryPlayletHistoryList 按最近观看时间倒序分页返回当前用户的上架短剧
func QueryPlayletHistoryList(ctx context.Context, userID int64, req *proto.PlayletHistoryListReq) (*proto.PlayletHistoryListResp, *srvdef.SrvErr) {
	if userID <= 0 || req == nil {
		return nil, srvdef.New(srvdef.ErrParamError, "观看历史参数无效", "")
	}
	pageNum, pageSize := moreser.NormalizePage(req.PageNum, req.PageSize, 20, 100)
	base := []bson.M{
		{"$match": bson.M{models.WatchHistoryUserID: userID, models.WatchHistoryDataType: models.WatchHistoryTypePlaylet, models.WatchHistoryUpdatedAt: bson.M{"$gte": time.Now().UTC().AddDate(0, 0, -models.WatchHistoryRetentionDays)}}},
		{"$lookup": bson.M{"from": playletmod.TN.Playlet, "localField": models.WatchHistoryContentID, "foreignField": playletmod.FN.Playlet.Id, "as": "playlet"}},
		{"$unwind": "$playlet"},
		{"$match": bson.M{"playlet." + playletmod.FN.Playlet.Status: playletmod.StatusUp}},
	}
	countRows := make([]struct {
		Total int64 `bson:"total"`
	}, 0)
	if err := models.AggregateWatchHistory(ctx, &countRows, append(append([]bson.M(nil), base...), bson.M{"$count": "total"})); err != nil {
		return nil, err
	}
	total := int64(0)
	if len(countRows) > 0 {
		total = countRows[0].Total
	}
	resp := &proto.PlayletHistoryListResp{BasePageResp: response.BasePageResp{
		TotalCount: total, PageNum: int(pageNum), PageSize: int(pageSize), List: make([]*proto.PlayletHistoryItem, 0),
	}, Translations: translationser.GetTranslationData(), BottonTranslations: translationser.GetTranslationBottomList()}
	if total == 0 || pageNum > (total-1)/pageSize+1 {
		return resp, nil
	}
	sortStage := bson.M{"$sort": bson.D{{Key: models.WatchHistoryUpdatedAt, Value: -1}, {Key: "_id", Value: -1}}}
	pipeline := append([]bson.M{base[0], sortStage}, base[1:]...)
	pipeline = append(pipeline, bson.M{"$skip": (pageNum - 1) * pageSize}, bson.M{"$limit": pageSize})
	rows := make([]playletHistoryRow, 0)
	if err := models.AggregateWatchHistory(ctx, &rows, pipeline); err != nil {
		return nil, err
	}
	list := make(playletmod.PlayletList, 0, len(rows))
	for i := range rows {
		list = append(list, &rows[i].Playlet)
	}
	tagNames, themeNames, err := buildPlayletTagThemeNameMaps(ctx, list)
	if err != nil {
		return nil, err
	}
	cdn := configser.GetRequestConfig(ctx).ImgCdn
	items := make([]*proto.PlayletHistoryItem, 0, len(rows))
	for _, row := range rows {
		items = append(items, &proto.PlayletHistoryItem{
			PlayletData: playletToAppData(&row.Playlet, cdn, tagNames, themeNames),
			ChapterID:   row.ChapterID, Episode: row.Episode, WatchedAt: row.UpdatedAt,
		})
	}
	resp.List = items
	return resp, nil
}

// ClearPlayletHistory 清空当前用户的短剧观看历史
func ClearPlayletHistory(ctx context.Context, userID int64) (*proto.PlayletHistoryClearResp, *srvdef.SrvErr) {
	if userID <= 0 {
		return nil, srvdef.New(srvdef.ErrParamError, "用户无效", "")
	}
	count, err := models.DeleteWatchHistory(ctx, userID, models.WatchHistoryTypePlaylet)
	if err != nil {
		return nil, err
	}
	return &proto.PlayletHistoryClearResp{DeletedCount: count}, nil
}

// buildPlayletTagThemeNameMaps 批量查询当前页短剧标签和题材名称，避免列表循环内多次访问数据库
func buildPlayletTagThemeNameMaps(ctx context.Context, list playletmod.PlayletList) (contenttagmod.ContentTagMap, map[int64]string, *srvdef.SrvErr) {
	tagIds := uniquePlayletRelationIds(list, func(item *playletmod.Playlet) []int64 {
		return item.TagIds
	})
	themeIds := uniquePlayletRelationIds(list, func(item *playletmod.Playlet) []int64 {
		return item.ThemeIds
	})
	tagNameMap, err := buildPlayletTagNameMap(ctx, tagIds)
	if err != nil {
		return nil, nil, err
	}
	themeNameMap, err := buildPlayletThemeNameMap(ctx, themeIds)
	if err != nil {
		return nil, nil, err
	}
	return tagNameMap, themeNameMap, nil
}

// uniquePlayletRelationIds 按短剧关联字段收集去重后的ID
func uniquePlayletRelationIds(list playletmod.PlayletList, values func(item *playletmod.Playlet) []int64) []int64 {
	ids := make([]int64, 0)
	seen := make(map[int64]struct{})
	for _, item := range list {
		if item == nil {
			continue
		}
		for _, id := range values(item) {
			if id <= 0 {
				continue
			}
			if _, ok := seen[id]; ok {
				continue
			}
			seen[id] = struct{}{}
			ids = append(ids, id)
		}
	}
	return ids
}

// buildPlayletTagNameMap 批量查询当前页短剧标签名称
func buildPlayletTagNameMap(ctx context.Context, tagIds []int64) (contenttagmod.ContentTagMap, *srvdef.SrvErr) {
	result := make(contenttagmod.ContentTagMap, len(tagIds))
	if len(tagIds) == 0 {
		return result, nil
	}
	return contenttagmod.GetMapTags(ctx, tagIds)
}

// buildPlayletThemeNameMap 批量查询当前页短剧题材名称
func buildPlayletThemeNameMap(ctx context.Context, themeIds []int64) (map[int64]string, *srvdef.SrvErr) {
	result := make(map[int64]string, len(themeIds))
	if len(themeIds) == 0 {
		return result, nil
	}
	themes, err := playletthememod.FindManyPlayletTheme(ctx, bson.M{
		playletthememod.FN.PlayletTheme.Id: bson.M{"$in": themeIds},
	}, options.Find().SetProjection(bson.M{
		playletthememod.FN.PlayletTheme.Id:   1,
		playletthememod.FN.PlayletTheme.Name: 1,
	}))
	if err != nil {
		return nil, err
	}
	for _, theme := range themes {
		if theme != nil {
			result[theme.Id] = theme.Name
		}
	}
	return result, nil
}

// playletTagNamesFromMap 按短剧标签ID原始顺序组装标签名称
func playletTagNamesFromMap(tagIds []int64, tagNameMap contenttagmod.ContentTagMap) []string {
	result := make([]string, 0, len(tagIds))
	for _, tagId := range tagIds {
		if tag := tagNameMap[tagId]; tag != nil && tag.Name != "" {
			result = append(result, tag.Name)
		}
	}
	return result
}

// playletTagSlugsFromMap 按标签名称的顺序组装slug
func playletTagSlugsFromMap(tagIds []int64, tagNameMap contenttagmod.ContentTagMap) []string {
	result := make([]string, 0, len(tagIds))
	for _, tagId := range tagIds {
		if tag := tagNameMap[tagId]; tag != nil && tag.Name != "" {
			result = append(result, tag.Slug)
		}
	}
	return result
}

// playletThemeNamesFromMap 按短剧题材ID原始顺序组装题材名称
func playletThemeNamesFromMap(themeIds []int64, themeNameMap map[int64]string) []string {
	result := make([]string, 0, len(themeIds))
	for _, themeId := range themeIds {
		if name := themeNameMap[themeId]; name != "" {
			result = append(result, name)
		}
	}
	return result
}

// isNewPlaylet 判断短剧是否为本周内上架
func isNewPlaylet(onlineAt time.Time) bool {
	if onlineAt.IsZero() {
		return false
	}
	return onlineAt.After(utils.BeginOfWeekByTime(utils.Now()))
}

// normalizePlayletSeoValue 规范化 SEO 字段，避免 keywords 为 null
func normalizePlayletSeoValue(seo pubdef.SeoValue) pubdef.SeoValue {
	seo.Title = strings.TrimSpace(seo.Title)
	seo.Description = strings.TrimSpace(seo.Description)
	if seo.Keyworld == nil {
		seo.Keyworld = make([]string, 0)
		return seo
	}
	words := make([]string, 0, len(seo.Keyworld))
	for _, word := range seo.Keyworld {
		word = strings.TrimSpace(word)
		if word == "" {
			continue
		}
		words = append(words, word)
	}
	seo.Keyworld = words
	return seo
}

// playletRequestPath 从上下文中提取当前请求路径，避免API层重复组装短剧响应字段
func playletRequestPath(ctx context.Context) string {
	if ginCtx, ok := ctx.(*gin.Context); ok && ginCtx.Request != nil && ginCtx.Request.URL != nil {
		return ginCtx.Request.URL.Path
	}
	return ""
}

// emptyPlayletRecommendListPage 构造 app 推荐短剧空分页响应
func emptyPlayletRecommendListPage(pageNum, pageSize int64) *proto.PlayletRecommendListResp {
	return &proto.PlayletRecommendListResp{BasePageResp: response.BasePageResp{
		PageSize: int(pageSize),
		PageNum:  int(pageNum),
		List:     make([]*proto.PlayletRecommendListItem, 0),
	}}
}

const (
	playletHomeBannerLimit      int64 = 5
	playletHomeModuleTopicLimit int64 = 4
	playletHomeTopicLimit       int64 = 3
	playletHomeTopicItems       int64 = 3
)

// buildHomePlayletResponse 查询并组装短剧首页数据
func buildHomePlayletResponse(ctx context.Context) (*proto.HomePlayletResponse, *srvdef.SrvErr) {
	cfg := configser.GetRequestConfig(ctx)
	// 广告和 SEO 使用当前请求的站点配置
	seo := pubdef.SeoValue{Title: cfg.WebTitle, Keyworld: cfg.WebKeyworld, Description: cfg.WebDescription}
	resp := &proto.HomePlayletResponse{
		HomeBannerData: make([]*proto.HomeBannerData, 0),
		Modules:        make([]*proto.HomeModuleData, 0),
		Announcements:  make([]*proto.AnnouncementItem, 0),
		Advitise:       configser.GetAdvitise(),
		SeoInfo:        &seo,
	}
	// Banner 只取已上架且开启首页展示的短剧，优先展示置顶权重高的内容
	banners, err := playletmod.FindManyPlaylet(ctx, bson.M{
		playletmod.FN.Playlet.Status:       playletmod.StatusUp,
		playletmod.FN.Playlet.ShowOnBanner: true,
	}, options.Find().SetSort(bson.D{
		{Key: playletmod.FN.Playlet.TopRank, Value: -1},
		{Key: playletmod.FN.Playlet.CreatedAt, Value: -1},
		{Key: playletmod.FN.Playlet.Id, Value: -1},
	}).SetLimit(playletHomeBannerLimit))
	if err != nil {
		return nil, err
	}
	tagNames, themeNames, err := buildPlayletTagThemeNameMaps(ctx, banners)
	if err != nil {
		return nil, err
	}
	for _, item := range banners {
		if item == nil {
			continue
		}
		resp.HomeBannerData = append(resp.HomeBannerData, &proto.HomeBannerData{
			PlayletData:  playletToAppData(item, cfg.ImgCdn, tagNames, themeNames),
			ShowOnBanner: item.ShowOnBanner,
			Banner:       netutil.MergeURL(cfg.ImgCdn, item.Banner),
		})
	}
	// 首页模块仅使用已启用的配置，排序值越大越靠前
	configs, err := playlethomeconfigmod.FindManyPlayletHomeConfig(ctx,
		bson.M{playlethomeconfigmod.FN.PlayletHomeConfig.Enabled: true},
		options.Find().SetSort(bson.D{
			{Key: playlethomeconfigmod.FN.PlayletHomeConfig.Rank, Value: -1},
			{Key: playlethomeconfigmod.FN.PlayletHomeConfig.Id, Value: -1},
		}))
	if err != nil {
		return nil, err
	}
	for _, item := range configs {
		if item == nil {
			continue
		}
		module, err := homeModule(ctx, item, cfg.ImgCdn)
		if err != nil {
			return nil, err
		}
		resp.Modules = append(resp.Modules, module)
	}
	// 公告只返回启用项，先按排序值再按修改时间倒序排列
	announcements, err := announcementmod.FindManyAnnouncement(ctx,
		bson.M{announcementmod.FN.Announcement.Status: true},
		options.Find().SetSort(bson.D{
			{Key: announcementmod.FN.Announcement.Sort, Value: -1},
			{Key: announcementmod.FN.Announcement.UpdatedAt, Value: -1},
		}))
	if err != nil {
		return nil, err
	}
	for _, item := range announcements {
		if item != nil {
			resp.Announcements = append(resp.Announcements, &proto.AnnouncementItem{Id: item.Id, Title: item.Title, Content: item.Content})
		}
	}
	return resp, nil
}

// homeModule 按配置的数据类型和模块类型组装首页模块
func homeModule(ctx context.Context, config *playlethomeconfigmod.PlayletHomeConfig, imgCdn string) (*proto.HomeModuleData, *srvdef.SrvErr) {
	// 未设置条数时使用默认值，并限制最大查询量
	limit := config.Limit
	if limit <= 0 {
		limit = playlethomeconfigmod.DefaultLimit
	}
	if limit > playlethomeconfigmod.MaxLimit {
		limit = playlethomeconfigmod.MaxLimit
	}
	module := &proto.HomeModuleData{
		Id:                  config.Id,
		Slug:                config.Slug,
		Title:               config.Title,
		Desc:                config.Desc,
		Label:               config.Label,
		Style:               config.Style,
		CardBackgroundImage: netutil.MergeURL(imgCdn, config.CardBackgroundImage),
		ModuleType:          config.ModuleType,
		DataType:            config.DataType,
		RecommendType:       config.RecommendType,
		CategoryId:          config.CategoryId,
		Rank:                config.Rank,
		List:                make([]*proto.PlayletData, 0),
		TopicList:           make([]*proto.HomeTopicData, 0),
	}
	// 专题模块按数据类型分别使用视频分类或短剧题材
	if config.DataType == playlethomeconfigmod.DataTypeVideo {
		if config.ModuleType == playlethomeconfigmod.ModuleTypeTopic {
			topics, err := homeVideoTopics(ctx, config, imgCdn)
			module.TopicList = topics
			return module, err
		}
		list, err := homeVideos(ctx, config, imgCdn, limit, 0, 0)
		module.List = list
		return module, err
	}
	if config.ModuleType == playlethomeconfigmod.ModuleTypeTopic {
		topics, err := homeTopics(ctx, config, imgCdn)
		module.TopicList = topics
		return module, err
	}
	list, err := homePlaylets(ctx, config, 0, limit)
	if err != nil {
		return nil, err
	}
	module.List, err = homePlayletData(ctx, list, imgCdn)
	return module, err
}

// homePlaylets 查询已上架短剧，按需叠加分类和专题筛选
func homePlaylets(ctx context.Context, config *playlethomeconfigmod.PlayletHomeConfig, themeId, limit int64) (playletmod.PlayletList, *srvdef.SrvErr) {
	filter, ok := homePlayletFilter(config, themeId)
	if !ok {
		return make(playletmod.PlayletList, 0), nil
	}
	if config.RecommendType == playlethomeconfigmod.RecommendTypeCategory {
		return playletmod.FindManyPlayletByCategoryRank(ctx, filter, config.CategoryId, 0, limit, playletmod.CategoryRankSort(), nil)
	}
	return findPlayletRecommendPage(ctx, filter, homePlayletSort(config.RecommendType), 0, limit)
}

// homePlayletSort 将推荐类型映射到短剧排序字段，ID 用于稳定同分排序
func homePlayletSort(recommendType int64) bson.D {
	var primary string
	switch recommendType {
	case playlethomeconfigmod.RecommendTypeUpdated:
		primary = playletmod.FN.Playlet.UpdatedAt
	case playlethomeconfigmod.RecommendTypeLike:
		primary = playletmod.FN.Playlet.CountLike
	case playlethomeconfigmod.RecommendTypeHeat:
		primary = playletmod.FN.Playlet.HeatValue
	case playlethomeconfigmod.RecommendTypeCategory:
		primary = playletmod.FN.Playlet.RecommendRank
	default:
		primary = playletmod.FN.Playlet.CountBrowse
	}
	return bson.D{{Key: primary, Value: -1}, {Key: playletmod.FN.Playlet.Id, Value: -1}}
}

// homePlayletData 补齐标签和专题名称并转换为 App 短剧结构
func homePlayletData(ctx context.Context, list playletmod.PlayletList, imgCdn string) ([]*proto.PlayletData, *srvdef.SrvErr) {
	result := make([]*proto.PlayletData, 0, len(list))
	tagNames, themeNames, err := buildPlayletTagThemeNameMaps(ctx, list)
	if err != nil {
		return nil, err
	}
	for _, item := range list {
		if item == nil {
			continue
		}
		data := playletToAppData(item, imgCdn, tagNames, themeNames)
		result = append(result, &data)
	}
	return result, nil
}

// homeVideos 查询审核通过的视频，推荐类型决定排序或分类筛选
func homeVideos(ctx context.Context, config *playlethomeconfigmod.PlayletHomeConfig, imgCdn string, limit, skip, categoryId int64) ([]*proto.HomeVideoData, *srvdef.SrvErr) {
	result := make([]*proto.HomeVideoData, 0)
	filter, ok := homeVideoFilter(config, categoryId)
	if !ok {
		return result, nil
	}
	sortKey := videoinformationmod.FN.VideoInformation.Real.WatchTimes
	switch config.RecommendType {
	case playlethomeconfigmod.RecommendTypeUpdated:
		sortKey = videoinformationmod.FN.VideoInformation.UpdatedAt
	case playlethomeconfigmod.RecommendTypeLike:
		sortKey = videoinformationmod.FN.VideoInformation.Real.Likes
	case playlethomeconfigmod.RecommendTypeHeat:
		sortKey = videoinformationmod.FN.VideoInformation.HeatValue
	case playlethomeconfigmod.RecommendTypeCategory:
		sortKey = videoinformationmod.FN.VideoInformation.Sort
	}
	sort := bson.D{{Key: sortKey, Value: -1}}
	if config.RecommendType == playlethomeconfigmod.RecommendTypeHeat {
		sort = append(sort, bson.E{Key: videoinformationmod.FN.VideoInformation.Sort, Value: -1})
	}
	sort = append(sort, bson.E{Key: videoinformationmod.FN.VideoInformation.Id, Value: -1})
	projection := bson.D{
		{Key: videoinformationmod.FN.VideoInformation.Id, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.Title, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.Slug, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.CoverImg, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.Desc, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.Tags, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.Real.WatchTimes, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.Real.Likes, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.Fake.WatchTimes, Value: 1},
		{Key: videoinformationmod.FN.VideoInformation.Fake.Likes, Value: 1},
	}
	var list videoinformationmod.VideoInformationList
	var err *srvdef.SrvErr
	if config.RecommendType == playlethomeconfigmod.RecommendTypeCategory {
		selectedCategoryId := config.CategoryId
		if categoryId > 0 {
			selectedCategoryId = categoryId
		}
		project := bson.M{}
		for _, field := range projection {
			project[field.Key] = field.Value
		}
		list, err = videoinformationmod.FindManyVideoByCategoryRank(ctx, filter, selectedCategoryId, skip, limit, project)
	} else {
		list, err = videoinformationmod.FindManyVideoInformations(ctx, filter, options.Find().SetProjection(projection).SetSort(sort).SetSkip(skip).SetLimit(limit))
	}
	if err != nil {
		return nil, err
	}
	// 展示数值为真实统计与后台设置的虚拟统计之和
	for _, item := range list {
		if item == nil {
			continue
		}
		result = append(result, &proto.HomeVideoData{
			Id: item.Id, Title: item.Title, Slug: item.Slug,
			Cover: netutil.MergeURL(imgCdn, item.CoverImg), Desc: item.Desc,
			Tags: item.Tags, WatchNum: item.Real.WatchTimes + item.Fake.WatchTimes,
			LikeNum: item.Real.Likes + item.Fake.Likes,
		})
	}
	return result, nil
}

// homeVideoTopics 从配置的视频分类中按视频数量选取前四个有内容的专题
func homeVideoTopics(ctx context.Context, config *playlethomeconfigmod.PlayletHomeConfig, imgCdn string) ([]*proto.HomeTopicData, *srvdef.SrvErr) {
	topics, _, err := homeTopicPage(ctx, config, imgCdn, 0, playletHomeModuleTopicLimit, 0, true, true)
	return topics, err
}

// homeTopics 从配置的题材中按上架短剧数量选取前四个专题，每个专题最多取三部短剧
func homeTopics(ctx context.Context, config *playlethomeconfigmod.PlayletHomeConfig, imgCdn string) ([]*proto.HomeTopicData, *srvdef.SrvErr) {
	topics, _, err := homeTopicPage(ctx, config, imgCdn, 0, playletHomeModuleTopicLimit, 0, true, true)
	return topics, err
}

const (
	homeConfigPageSize  int64 = 20
	homeTopicPageSize   int64 = 12
	homePageMaxSize     int64 = 100
	homePlayletCacheTTL       = 5 * time.Minute
)

// HomeConfigList 按首页配置分页查询短剧、视频或专题
func HomeConfigList(ctx context.Context, req *proto.PlayletHomeConfigListReq) (*proto.PlayletHomeConfigListResp, *srvdef.SrvErr) {
	if req == nil || (req.Id <= 0 && strings.TrimSpace(req.Slug) == "") {
		return nil, srvdef.New(srvdef.ErrParamError, "首页配置ID或slug不能为空", "")
	}
	filter := bson.M{}
	if slug := strings.TrimSpace(req.Slug); slug != "" {
		filter[playlethomeconfigmod.FN.PlayletHomeConfig.Slug] = slug
	} else {
		filter[playlethomeconfigmod.FN.PlayletHomeConfig.Id] = req.Id
	}
	config, err := playlethomeconfigmod.FindOnePlayletHomeConfig(ctx, filter)
	if err != nil {
		return nil, err
	}
	pageNum, pageSize := normalizeHomePage(req.PageNum, req.PageSize, homeConfigPageSize)
	resp := &proto.PlayletHomeConfigListResp{
		Config: &proto.HomeModuleData{
			Id: config.Id, Slug: config.Slug, Title: config.Title, Desc: config.Desc, Label: config.Label,
			Style: config.Style, CardBackgroundImage: netutil.MergeURL(configser.GetRequestConfig(ctx).ImgCdn, config.CardBackgroundImage),
			ModuleType: config.ModuleType, DataType: config.DataType, RecommendType: config.RecommendType,
			CategoryId: config.CategoryId, Rank: config.Rank,
			List: make([]*proto.PlayletData, 0), TopicList: make([]*proto.HomeTopicData, 0),
		},
		PageNum: int(pageNum), PageSize: int(pageSize), List: make([]*proto.PlayletData, 0),
		TopicList: make([]*proto.HomeTopicData, 0), Advitise: configser.GetAdvitise(),
	}
	if !config.Enabled {
		return resp, nil
	}
	skip := (pageNum - 1) * pageSize
	imgCdn := configser.GetRequestConfig(ctx).ImgCdn
	if config.ModuleType == playlethomeconfigmod.ModuleTypeTopic {
		resp.TopicList, resp.TotalCount, err = homeTopicPage(ctx, config, imgCdn, skip, pageSize, 0, true, true)
		return resp, err
	}
	if config.DataType == playlethomeconfigmod.DataTypeVideo {
		filter, ok := homeVideoFilter(config, 0)
		if !ok {
			resp.List = make([]*proto.HomeVideoData, 0)
			return resp, nil
		}
		resp.TotalCount, err = videoinformationmod.CountVideoInformations(ctx, filter)
		if err != nil {
			return nil, err
		}
		resp.List, err = homeVideos(ctx, config, imgCdn, pageSize, skip, 0)
		return resp, err
	}
	filter, ok := homePlayletFilter(config, 0)
	if !ok {
		return resp, nil
	}
	resp.TotalCount, err = playletmod.CountPlaylet(ctx, filter)
	if err != nil {
		return nil, err
	}
	var list playletmod.PlayletList
	if config.RecommendType == playlethomeconfigmod.RecommendTypeCategory {
		list, err = playletmod.FindManyPlayletByCategoryRank(ctx, filter, config.CategoryId, skip, pageSize, playletmod.CategoryRankSort(), nil)
	} else {
		list, err = findPlayletRecommendPage(ctx, filter, homePlayletSort(config.RecommendType), skip, pageSize)
	}
	if err != nil {
		return nil, err
	}
	resp.List, err = homePlayletData(ctx, list, imgCdn)
	return resp, err
}

// TopicDetail 根据数据类型查询短剧题材或视频分类专题详情
func TopicDetail(ctx context.Context, req *proto.PlayletTopicDetailReq) (*proto.PlayletTopicDetailResp, *srvdef.SrvErr) {
	if req == nil || (req.Id <= 0 && strings.TrimSpace(req.TopicSlug) == "") {
		return nil, srvdef.New(srvdef.ErrParamError, "专题ID或slug不能为空", "")
	}
	dataType := req.DataType
	if dataType == 0 {
		dataType = playlethomeconfigmod.DataTypeAll
	}
	if dataType != playlethomeconfigmod.DataTypeAll && dataType != playlethomeconfigmod.DataTypeVideo {
		return nil, srvdef.New(srvdef.ErrParamError, "数据类型无效", "")
	}
	pageNum, pageSize := normalizeHomePage(req.PageNum, req.PageSize, homeTopicPageSize)
	imgCdn := configser.GetRequestConfig(ctx).ImgCdn
	resp := &proto.PlayletTopicDetailResp{
		DataType: dataType, PageNum: int(pageNum), PageSize: int(pageSize),
		Covers: make([]string, 0), List: make([]*proto.PlayletData, 0),
		MoreTopics: make([]*proto.HomeTopicData, 0), Advitise: configser.GetAdvitise(),
	}
	skip := (pageNum - 1) * pageSize
	var err *srvdef.SrvErr
	if dataType == playlethomeconfigmod.DataTypeVideo {
		err = fillVideoTopicDetail(ctx, req, resp, imgCdn, skip, pageSize)
	} else {
		err = fillPlayletTopicDetail(ctx, req, resp, imgCdn, skip, pageSize)
	}
	if err != nil {
		return nil, err
	}
	config := &playlethomeconfigmod.PlayletHomeConfig{DataType: dataType, RecommendType: playlethomeconfigmod.RecommendTypeHeat}
	resp.MoreTopics, _, err = homeTopicPage(ctx, config, imgCdn, 0, playletHomeTopicLimit, resp.Id, true, false)
	return resp, err
}

func fillPlayletTopicDetail(ctx context.Context, req *proto.PlayletTopicDetailReq, resp *proto.PlayletTopicDetailResp, imgCdn string, skip, pageSize int64) *srvdef.SrvErr {
	filter := bson.M{playletthememod.FN.PlayletTheme.Status: true}
	if slug := strings.TrimSpace(req.TopicSlug); slug != "" {
		filter[playletthememod.FN.PlayletTheme.Slug] = slug
	} else {
		filter[playletthememod.FN.PlayletTheme.Id] = req.Id
	}
	theme, err := playletthememod.FindOnePlayletTheme(ctx, filter)
	if err != nil {
		return err
	}
	resp.Id, resp.Name, resp.Slug, resp.Rank = theme.Id, theme.Name, theme.Slug, theme.Rank
	resp.Desc, resp.Icon = theme.SeoInfo.Description, netutil.MergeURL(imgCdn, theme.Icon)
	seo := theme.SeoInfo
	resp.SeoInfo = &seo
	playletFilter := bson.M{playletmod.FN.Playlet.Status: playletmod.StatusUp, playletmod.FN.Playlet.ThemeIds: theme.Id}
	resp.TotalCount, err = playletmod.CountPlaylet(ctx, playletFilter)
	if err != nil {
		return err
	}
	resp.PlayletCount = resp.TotalCount
	sortOrder := homeTopicDetailPlayletSort(req.SortType)
	covers, err := findPlayletRecommendPage(ctx, playletFilter, homeTopicDetailPlayletSort(1), 0, playletHomeTopicItems)
	if err != nil {
		return err
	}
	for _, item := range covers {
		if item != nil && item.Cover != "" {
			resp.Covers = append(resp.Covers, netutil.MergeURL(imgCdn, item.Cover))
		}
	}
	list, err := findPlayletRecommendPage(ctx, playletFilter, sortOrder, skip, pageSize)
	if err != nil {
		return err
	}
	resp.List, err = homePlayletData(ctx, list, imgCdn)
	return err
}

func fillVideoTopicDetail(ctx context.Context, req *proto.PlayletTopicDetailReq, resp *proto.PlayletTopicDetailResp, imgCdn string, skip, pageSize int64) *srvdef.SrvErr {
	filter := bson.M{videocategorymod.FN.VideoCategory.Status: true}
	if slug := strings.TrimSpace(req.TopicSlug); slug != "" {
		filter[videocategorymod.FN.VideoCategory.Slug] = slug
	} else {
		filter[videocategorymod.FN.VideoCategory.Id] = req.Id
	}
	category, err := videocategorymod.FindOneVideoCategory(ctx, filter)
	if err != nil {
		return err
	}
	resp.Id, resp.Name, resp.Slug, resp.Rank = category.Id, category.Name, category.Slug, category.Rank
	resp.Desc = category.Desc
	seo := category.SeoInfo
	resp.SeoInfo = &seo
	videoFilter := bson.M{videoinformationmod.FN.VideoInformation.Status: pubdef.InformationStatusVerifyOK,
		videoinformationmod.FN.VideoInformation.CategoryId: category.Id}
	resp.TotalCount, err = videoinformationmod.CountVideoInformations(ctx, videoFilter)
	if err != nil {
		return err
	}
	resp.VideoCount = resp.TotalCount
	config := &playlethomeconfigmod.PlayletHomeConfig{RecommendType: homeTopicDetailVideoRecommendType(req.SortType)}
	covers, err := homeVideos(ctx, &playlethomeconfigmod.PlayletHomeConfig{RecommendType: playlethomeconfigmod.RecommendTypeHeat}, imgCdn, playletHomeTopicItems, 0, category.Id)
	if err != nil {
		return err
	}
	for _, item := range covers {
		if item != nil && item.Cover != "" {
			resp.Covers = append(resp.Covers, item.Cover)
		}
	}
	resp.List, err = homeVideos(ctx, config, imgCdn, pageSize, skip, category.Id)
	return err
}

func homeTopicDetailPlayletSort(sortType int64) bson.D {
	switch sortType {
	case 2:
		return bson.D{{Key: playletmod.FN.Playlet.OnlineAt, Value: -1}, {Key: playletmod.FN.Playlet.Id, Value: -1}}
	case 3:
		return bson.D{{Key: playletmod.FN.Playlet.HeatValue, Value: -1}, {Key: playletmod.FN.Playlet.CountBrowse, Value: -1}, {Key: playletmod.FN.Playlet.Id, Value: -1}}
	default:
		return bson.D{{Key: playletmod.FN.Playlet.RecommendRank, Value: -1}, {Key: playletmod.FN.Playlet.Id, Value: -1}}
	}
}

func homeTopicDetailVideoRecommendType(sortType int64) int64 {
	switch sortType {
	case 2:
		return playlethomeconfigmod.RecommendTypeUpdated
	case 3:
		return playlethomeconfigmod.RecommendTypeBrowse
	default:
		return playlethomeconfigmod.RecommendTypeCategory
	}
}

func normalizeHomePage(pageNum, pageSize, defaultSize int64) (int64, int64) {
	if pageNum <= 0 {
		pageNum = 1
	}
	if pageSize <= 0 {
		pageSize = defaultSize
	}
	if pageSize > homePageMaxSize {
		pageSize = homePageMaxSize
	}
	return pageNum, pageSize
}

func homePlayletFilter(config *playlethomeconfigmod.PlayletHomeConfig, themeId int64) (bson.M, bool) {
	filter := bson.M{playletmod.FN.Playlet.Status: playletmod.StatusUp}
	if config.RecommendType == playlethomeconfigmod.RecommendTypeCategory {
		if config.CategoryId <= 0 {
			return nil, false
		}
		filter[playletmod.FN.Playlet.CategoryIds] = config.CategoryId
	}
	if themeId > 0 {
		filter[playletmod.FN.Playlet.ThemeIds] = themeId
	}
	return filter, true
}

func homeVideoFilter(config *playlethomeconfigmod.PlayletHomeConfig, categoryId int64) (bson.M, bool) {
	filter := bson.M{videoinformationmod.FN.VideoInformation.Status: pubdef.InformationStatusVerifyOK}
	if categoryId > 0 {
		filter[videoinformationmod.FN.VideoInformation.CategoryId] = categoryId
	} else if config.RecommendType == playlethomeconfigmod.RecommendTypeCategory {
		if config.CategoryId <= 0 {
			return nil, false
		}
		filter[videoinformationmod.FN.VideoInformation.CategoryId] = config.CategoryId
	}
	return filter, true
}

// homeTopicPage 按专题排序分页，可分别限定有上架内容和首页配置关联的专题
func homeTopicPage(ctx context.Context, config *playlethomeconfigmod.PlayletHomeConfig, imgCdn string, skip, limit, excludeId int64, onlyWithContent, onlyConfigured bool) ([]*proto.HomeTopicData, int64, *srvdef.SrvErr) {
	type topicStat struct {
		id, rank, count  int64
		name, slug, icon string
		seo              pubdef.SeoValue
	}
	stats := make([]topicStat, 0)
	selectedTopics := make(map[int64]struct{}, len(config.TopicIds))
	if onlyConfigured {
		for _, id := range config.TopicIds {
			selectedTopics[id] = struct{}{}
		}
		if len(selectedTopics) == 0 {
			return make([]*proto.HomeTopicData, 0), 0, nil
		}
	}
	if config.DataType == playlethomeconfigmod.DataTypeVideo {
		filter := bson.M{videocategorymod.FN.VideoCategory.Status: true}
		if onlyConfigured {
			filter[videocategorymod.FN.VideoCategory.Id] = bson.M{"$in": config.TopicIds}
		}
		if config.RecommendType == playlethomeconfigmod.RecommendTypeCategory {
			if config.CategoryId <= 0 {
				return make([]*proto.HomeTopicData, 0), 0, nil
			}
			filter[videocategorymod.FN.VideoCategory.Id] = config.CategoryId
		}
		categories, err := videocategorymod.FindManyVideoCategorys(ctx, filter)
		if err != nil {
			return nil, 0, err
		}
		for _, category := range categories {
			if category == nil || category.Id == excludeId {
				continue
			}
			if onlyConfigured {
				if _, ok := selectedTopics[category.Id]; !ok {
					continue
				}
			}
			count, err := videoinformationmod.CountVideoInformations(ctx, bson.M{
				videoinformationmod.FN.VideoInformation.Status:     pubdef.InformationStatusVerifyOK,
				videoinformationmod.FN.VideoInformation.CategoryId: category.Id,
			})
			if err != nil {
				return nil, 0, err
			}
			if onlyWithContent && count == 0 {
				continue
			}
			stats = append(stats, topicStat{id: category.Id, rank: category.Rank, count: count,
				name: category.Name, slug: category.Slug, seo: category.SeoInfo})
		}
	} else {
		filter := bson.M{playletthememod.FN.PlayletTheme.Status: true}
		if onlyConfigured {
			filter[playletthememod.FN.PlayletTheme.Id] = bson.M{"$in": config.TopicIds}
		}
		themes, err := playletthememod.FindManyPlayletTheme(ctx, filter)
		if err != nil {
			return nil, 0, err
		}
		for _, theme := range themes {
			if theme == nil || theme.Id == excludeId {
				continue
			}
			if onlyConfigured {
				if _, ok := selectedTopics[theme.Id]; !ok {
					continue
				}
			}
			filter, ok := homePlayletFilter(config, theme.Id)
			if !ok {
				continue
			}
			count, err := playletmod.CountPlaylet(ctx, filter)
			if err != nil {
				return nil, 0, err
			}
			if onlyWithContent && count == 0 {
				continue
			}
			stats = append(stats, topicStat{id: theme.Id, rank: theme.Rank, count: count,
				name: theme.Name, slug: theme.Slug, icon: theme.Icon, seo: theme.SeoInfo})
		}
	}
	sort.Slice(stats, func(i, j int) bool {
		if stats[i].count != stats[j].count {
			return stats[i].count > stats[j].count
		}
		if stats[i].rank != stats[j].rank {
			return stats[i].rank > stats[j].rank
		}
		return stats[i].id > stats[j].id
	})
	total := int64(len(stats))
	result := make([]*proto.HomeTopicData, 0)
	if skip >= total || limit <= 0 {
		return result, total, nil
	}
	end := skip + limit
	if end > total {
		end = total
	}
	if onlyWithContent {
		end = total // 被排除的内容可能让专题变空，继续查后续专题补足展示数量
	}
	for _, stat := range stats[int(skip):int(end)] {
		if onlyWithContent && int64(len(result)) >= limit {
			break
		}
		item := &proto.HomeTopicData{Id: stat.id, Name: stat.name, Slug: stat.slug,
			Icon: netutil.MergeURL(imgCdn, stat.icon), Rank: stat.rank, SeoInfo: stat.seo}
		if config.DataType == playlethomeconfigmod.DataTypeVideo {
			item.VideoCount = stat.count
			list, err := homeVideos(ctx, config, imgCdn, playletHomeTopicItems, 0, stat.id)
			if err != nil {
				return nil, 0, err
			}
			item.List = list
			if onlyWithContent && len(list) == 0 {
				continue
			}
		} else {
			item.PlayletCount = stat.count
			list, err := homePlaylets(ctx, config, stat.id, playletHomeTopicItems)
			if err != nil {
				return nil, 0, err
			}
			if onlyWithContent && len(list) == 0 {
				continue
			}
			item.List, err = homePlayletData(ctx, list, imgCdn)
			if err != nil {
				return nil, 0, err
			}
		}
		result = append(result, item)
	}
	return result, total, nil
}

// Home 优先返回 Redis 缓存，未命中或缓存不可用时查询数据库
func Home(ctx context.Context) (*proto.HomePlayletResponse, *srvdef.SrvErr) {
	key := homePlayletCacheKey(configser.GetRequestConfig(ctx).ImgCdn)
	if resp := getHomePlayletCache(key); resp != nil {
		return resp, nil
	}
	resp, err := buildHomePlayletResponse(ctx)
	if err != nil {
		return nil, err
	}
	setHomePlayletCache(key, resp)
	return resp, nil
}

// homePlayletCacheKey 包含缓存版本和图片域名，后台变更或域名变更后使用新键
func homePlayletCacheKey(imgCdn string) string {
	if redis.Client() == nil {
		return ""
	}
	version := "0"
	value, err := redis.Get(redisconst.AppPlayletHomeCacheVersionKey())
	if err != nil {
		log.Warn("读取短剧首页缓存版本失败", log.E(err))
		return ""
	}
	if value != nil && strings.TrimSpace(*value) != "" {
		version = strings.TrimSpace(*value)
	}
	cdnHash := sha256.Sum256([]byte(imgCdn))
	return fmt.Sprintf("app:playlet:home:data:%d:v7:%s:%x", pubdef.AppId, version, cdnHash[:8])
}

// getHomePlayletCache 读取并反序列化完整首页响应
func getHomePlayletCache(key string) *proto.HomePlayletResponse {
	if key == "" {
		return nil
	}
	value, err := redis.Get(key)
	if err != nil {
		log.Warn("读取短剧首页缓存失败", log.E(err))
		return nil
	}
	if value == nil || *value == "" {
		return nil
	}
	var resp proto.HomePlayletResponse
	if err := json.Unmarshal([]byte(*value), &resp); err != nil {
		log.Warn("解析短剧首页缓存失败", log.E(err))
		return nil
	}
	return &resp
}

// setHomePlayletCache 缓存完整首页响应五分钟
func setHomePlayletCache(key string, resp *proto.HomePlayletResponse) {
	if key == "" || resp == nil {
		return
	}
	data, err := json.Marshal(resp)
	if err != nil {
		log.Warn("序列化短剧首页缓存失败", log.E(err))
		return
	}
	if err := redis.Set(key, string(data), homePlayletCacheTTL); err != nil {
		log.Warn("写入短剧首页缓存失败", log.E(err))
	}
}