package videocollectmod

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

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

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

// InsertOneVideoCollect 插入一条视频收藏关系
func InsertOneVideoCollect(ctx context.Context, doc *VideoCollect) (bool, *srvdef.SrvErr) {
	if doc.Id == 0 {
		doc.Id = mongos.Lid.VideoCollect.Get()
	}
	now := time.Now()
	if doc.CreatedAt.IsZero() {
		doc.CreatedAt = now
	}
	doc.UpdatedAt = now
	if _, err := coll.InsertOne(ctx, doc); err != nil {
		if mongo.IsDuplicateKeyError(err) {
			return false, nil
		}
		log.Warn("插入视频收藏关系失败", log.Any("doc", doc), log.E(err))
		return false, srvdef.New(srvdef.ErrDbInsertError, "", "")
	}
	return true, nil
}

// ExistsVideoCollect 查询视频收藏关系是否存在
func ExistsVideoCollect(ctx context.Context, filter bson.M) (bool, *srvdef.SrvErr) {
	var doc VideoCollect
	if err := coll.FindOneEx(ctx, &doc, filter, options.FindOne().SetProjection(bson.D{
		{Key: FN.VideoCollect.Id, Value: 1},
	})); err != nil {
		if err == mongo.ErrNoDocuments {
			return false, nil
		}
		log.Warn("查询视频收藏关系失败", log.E(err), log.Any("filter", filter))
		return false, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return true, nil
}

// DeleteOneVideoCollect 删除一条视频收藏关系
func DeleteOneVideoCollect(ctx context.Context, filter bson.M) (int64, *srvdef.SrvErr) {
	count, err := coll.DeleteOne(ctx, filter)
	if err != nil {
		log.Warn("删除视频收藏关系失败", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbDeleteError, "", "")
	}
	return count, nil
}

// FindManyVideoCollect 按条件查询视频收藏关系列表
func FindManyVideoCollect(ctx context.Context, filter bson.M, opts ...*options.FindOptions) (VideoCollectList, *srvdef.SrvErr) {
	data := make(VideoCollectList, 0)
	if err := coll.Find(ctx, &data, filter, opts...); err != nil {
		log.Warn("查询视频收藏关系列表失败", log.E(err), log.Any("filter", filter))
		return nil, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return data, nil
}

// CountVideoCollect 统计满足条件的视频收藏关系数量
func CountVideoCollect(ctx context.Context, filter bson.M, opts ...*options.CountOptions) (int64, *srvdef.SrvErr) {
	count, err := coll.Count(ctx, filter, opts...)
	if err != nil {
		log.Warn("统计视频收藏关系数量失败", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return count, nil
}