package playletfavoritemod

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"
)

const CollectionName = "playlet_favorite"

const (
	FieldID        = "_id"
	FieldUserID    = "userId"
	FieldPlayletID = "playletId"
	FieldCreatedAt = "createdAt"
	FieldUpdatedAt = "updatedAt"
)

type PlayletFavorite struct {
	ID        int64     `bson:"_id,omitempty"`
	UserID    int64     `bson:"userId"`
	PlayletID int64     `bson:"playletId"`
	CreatedAt time.Time `bson:"createdAt"`
	UpdatedAt time.Time `bson:"updatedAt"`
}

var coll *mongos.Collection

// Init 初始化短剧收藏集合及查询索引
func Init(ctx context.Context) {
	coll = mongos.Shop.Coll(CollectionName)
	indexes := []mongo.IndexModel{
		{Keys: bson.D{{Key: FieldUserID, Value: 1}, {Key: FieldPlayletID, Value: 1}}, Options: options.Index().SetUnique(true)},
		{Keys: bson.D{{Key: FieldUserID, Value: 1}, {Key: FieldCreatedAt, Value: -1}, {Key: FieldID, Value: -1}}},
		{Keys: bson.D{{Key: FieldPlayletID, Value: 1}}},
	}
	if _, err := coll.CreateIndex(ctx, indexes); err != nil {
		panic(fmt.Sprintf("(playletfavoritemod:Init) Create Index failed! err:%+v:", err))
	}
}

// Upsert 按用户和短剧写入收藏关系并返回是否新增
func Upsert(ctx context.Context, userID, playletID int64, now time.Time) (bool, *srvdef.SrvErr) {
	filter := bson.M{FieldUserID: userID, FieldPlayletID: playletID}
	update := bson.M{"$set": bson.M{FieldUpdatedAt: now}, "$setOnInsert": bson.M{
		FieldID: mongos.Lid.PlayletFavorite.Get(), FieldUserID: userID, FieldPlayletID: playletID, FieldCreatedAt: now,
	}}
	result, err := coll.UpdateOne(ctx, filter, update, options.Update().SetUpsert(true))
	if err != nil {
		log.Warn("playletfavoritemod:Upsert failed", log.Any("filter", filter), log.E(err))
		return false, srvdef.New(srvdef.ErrDbUpdateError, "", "")
	}
	return result.UpsertedCount > 0, nil
}

// Delete 删除收藏关系并返回是否实际删除
func Delete(ctx context.Context, filter bson.M) (bool, *srvdef.SrvErr) {
	deleted, err := coll.DeleteOne(ctx, filter)
	if err != nil {
		log.Warn("playletfavoritemod:Delete failed", log.Any("filter", filter), log.E(err))
		return false, srvdef.New(srvdef.ErrDbDeleteError, "", "")
	}
	return deleted > 0, nil
}

// Count 统计收藏关系数量
func Count(ctx context.Context, filter bson.M) (int64, *srvdef.SrvErr) {
	count, err := coll.Count(ctx, filter)
	if err != nil {
		log.Warn("playletfavoritemod:Count failed", log.Any("filter", filter), log.E(err))
		return 0, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return count, nil
}

// FindMany 查询收藏关系列表
func FindMany(ctx context.Context, filter bson.M, opts ...*options.FindOptions) ([]*PlayletFavorite, *srvdef.SrvErr) {
	list := make([]*PlayletFavorite, 0)
	if err := coll.Find(ctx, &list, filter, opts...); err != nil {
		log.Warn("playletfavoritemod:FindMany failed", log.Any("filter", filter), log.E(err))
		return nil, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return list, nil
}

// Aggregate 聚合收藏关系和短剧数据
func Aggregate(ctx context.Context, bind interface{}, pipeline []bson.M) *srvdef.SrvErr {
	if err := coll.Aggregate(ctx, bind, pipeline); err != nil {
		log.Warn("playletfavoritemod:Aggregate failed", log.Any("pipeline", pipeline), log.E(err))
		return srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return nil
}