package playletwatchhistorymod

import (
	"context"
	"fmt"
	"time"
	"videoweb/pub/common/log"
	"videoweb/pub/common/srvdef"
	"videoweb/pub/mongos"

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

var coll *mongos.Collection

const playletWatchHistoryTTLSeconds int32 = 90 * 24 * 60 * 60

// Init 初始化 playlet_watch_history 集合和常用查询索引
func Init(ctx context.Context) {
	coll = mongos.Shop.Coll(TN.PlayletWatchHistory)
	initIndex(ctx)
}

func initIndex(ctx context.Context) {
	indexes := []mongo.IndexModel{
		{
			Keys: bson.D{
				{Key: FN.PlayletWatchHistory.UserId, Value: 1},
				{Key: FN.PlayletWatchHistory.PlayletId, Value: 1},
			},
			Options: options.Index().SetUnique(true),
		},
		{
			Keys: bson.D{
				{Key: FN.PlayletWatchHistory.UserId, Value: 1},
				{Key: FN.PlayletWatchHistory.UpdatedAt, Value: -1},
				{Key: FN.PlayletWatchHistory.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.PlayletWatchHistory.UpdatedAt, Value: 1},
			},
			Options: options.Index().SetExpireAfterSeconds(playletWatchHistoryTTLSeconds),
		},
	}
	if _, err := coll.CreateIndex(ctx, indexes); err != nil {
		panic(fmt.Sprintf("(playletwatchhistorymod:initIndex) 创建索引失败 err:%+v:", err))
	}
}

// FindManyPlayletWatchHistory 按条件查询用户短剧观看历史
func FindManyPlayletWatchHistory(ctx context.Context, filter bson.M, opts ...*options.FindOptions) (PlayletWatchHistoryList, *srvdef.SrvErr) {
	data := make(PlayletWatchHistoryList, 0)
	if err := coll.Find(ctx, &data, filter, opts...); err != nil {
		log.Warn("查询短剧观看历史列表失败", log.E(err), log.Any("filter", filter))
		return nil, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return data, nil
}

// CountPlayletWatchHistory 统计满足条件的短剧观看历史数量
func CountPlayletWatchHistory(ctx context.Context, filter bson.M, opts ...*options.CountOptions) (int64, *srvdef.SrvErr) {
	count, err := coll.Count(ctx, filter, opts...)
	if err != nil {
		log.Warn("统计短剧观看历史数量失败", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return count, nil
}

// SavePlayletWatchHistory 保存用户短剧观看历史
func SavePlayletWatchHistory(ctx context.Context, userId int64, playletId int64, chapterId int64, currentEpisode int64) *srvdef.SrvErr {
	now := time.Now()
	filter := bson.M{
		FN.PlayletWatchHistory.UserId:    userId,
		FN.PlayletWatchHistory.PlayletId: playletId,
	}
	update := bson.M{
		"$set": bson.M{
			FN.PlayletWatchHistory.LastChapterId: chapterId,
			FN.PlayletWatchHistory.LastEpisode:   currentEpisode,
			FN.PlayletWatchHistory.UpdatedAt:     now,
		},
		"$setOnInsert": bson.M{
			FN.PlayletWatchHistory.Id:        mongos.Lid.PlayletWatchHistory.Get(),
			FN.PlayletWatchHistory.UserId:    userId,
			FN.PlayletWatchHistory.PlayletId: playletId,
			FN.PlayletWatchHistory.CreatedAt: now,
		},
	}
	if _, err := coll.UpsertOne(ctx, filter, update); err != nil {
		log.Warn("保存短剧观看历史失败", log.E(err), log.Any("filter", filter))
		return srvdef.New(srvdef.ErrDbUpdateError, "", "")
	}
	return nil
}

// DeleteManyPlayletWatchHistory 删除满足条件的短剧观看历史
func DeleteManyPlayletWatchHistory(ctx context.Context, filter bson.M, opts ...*options.DeleteOptions) (int64, *srvdef.SrvErr) {
	count, err := coll.DeleteMany(ctx, filter, opts...)
	if err != nil {
		log.Warn("删除短剧观看历史失败", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbDeleteError, "", "")
	}
	return count, nil
}