package playletmod

import (
	"context"
	"fmt"
	"hkdj-web-server/pub/common/log"
	"hkdj-web-server/pub/common/srvdef"
	"hkdj-web-server/pub/mongos"
	"time"

	"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 playlet 集合和常用查询索引
func Init(ctx context.Context) {
	coll = mongos.Shop.Coll(TN.Playlet)
	initIndex(ctx)
}

func initIndex(ctx context.Context) {
	indexes := []mongo.IndexModel{
		{
			Keys: bson.D{
				{Key: FN.Playlet.ThemeIds, Value: 1},
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.CreatedAt, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.ThemeIds, Value: 1},
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.CountCollect, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.ThemeIds, Value: 1},
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.UpdatedAt, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.TagIds, Value: 1},
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.UpdatedAt, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.CategoryIds, Value: 1},
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.UpdatedAt, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.IsFeatured, Value: 1},
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.CreatedAt, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.ShowOnBanner, Value: 1},
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.TopRank, Value: -1},
				{Key: FN.Playlet.CreatedAt, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.IsRecommend, Value: 1},
				{Key: FN.Playlet.RecommendRank, Value: -1},
				{Key: FN.Playlet.CreatedAt, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.CreatedAt, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.CountCollect, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.CountBrowse, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.HeatValue, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.OnlineAt, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.UpdatedAt, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.Slug, Value: 1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.MediaCenterId, Value: 1},
			},
			Options: options.Index().
				SetUnique(true).
				SetPartialFilterExpression(bson.M{
					FN.Playlet.MediaCenterId: bson.M{"$gt": 0},
				}),
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.OperateType, Value: 1},
				{Key: FN.Playlet.Status, Value: 1},
				{Key: FN.Playlet.CreatedAt, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Playlet.ContentType, Value: 1},
				{Key: FN.Playlet.CreatedAt, Value: -1},
				{Key: FN.Playlet.Id, Value: -1},
			},
			Options: options.Index().
				SetPartialFilterExpression(bson.M{
					FN.Playlet.MediaCenterId: bson.M{"$gt": 0},
				}),
		},
	}
	if _, err := coll.CreateIndex(ctx, indexes); err != nil {
		panic(fmt.Sprintf("(playletmod:initIndex) Create Index failed! err:%+v:", err))
	}
}

// InsertOnePlaylet 插入一条短剧数据
func InsertOnePlaylet(ctx context.Context, doc *Playlet) *srvdef.SrvErr {
	if doc.Id == 0 {
		doc.Id = mongos.Lid.Playlet.Get()
	}
	now := time.Now()
	if doc.CreatedAt.IsZero() {
		doc.CreatedAt = now
	}
	doc.UpdatedAt = now
	if _, err := coll.InsertOne(ctx, doc); err != nil {
		log.Warn("playletmod:InsertOnePlaylet failed", log.Any("doc", doc), log.E(err))
		return srvdef.New(srvdef.ErrDbInsertError, "", "")
	}
	return nil
}

// DelOnePlaylet 删除一条短剧数据
func DelOnePlaylet(ctx context.Context, filter bson.M) (int64, *srvdef.SrvErr) {
	count, err := coll.DeleteOne(ctx, filter)
	if err != nil {
		log.Warn("playletmod:DelOnePlaylet failed", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbDeleteError, "", "")
	}
	return count, nil
}

// DelManyPlaylet 按条件批量删除短剧数据
func DelManyPlaylet(ctx context.Context, filter bson.M) (int64, *srvdef.SrvErr) {
	count, err := coll.DeleteMany(ctx, filter)
	if err != nil {
		log.Warn("playletmod:DelManyPlaylet failed", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbDeleteError, "", "")
	}
	return count, nil
}

// FindOnePlaylet 查询一条短剧数据
func FindOnePlaylet(ctx context.Context, filter bson.M, opts ...*options.FindOneOptions) (*Playlet, *srvdef.SrvErr) {
	var doc Playlet
	if err := coll.FindOneEx(ctx, &doc, filter, opts...); err != nil {
		if err != mongo.ErrNoDocuments {
			log.Warn("playletmod:FindOnePlaylet failed", log.E(err), log.Any("filter", filter))
			return nil, srvdef.New(srvdef.ErrDbQueryError, "", "")
		}
		return nil, srvdef.New(srvdef.ErrNoData, "", "")
	}
	return &doc, nil
}

// FindManyPlaylet 按条件查询多条短剧数据
func FindManyPlaylet(ctx context.Context, filter bson.M, opts ...*options.FindOptions) (PlayletList, *srvdef.SrvErr) {
	data := make(PlayletList, 0)
	if err := coll.Find(ctx, &data, filter, opts...); err != nil {
		log.Warn("playletmod:FindManyPlaylet failed", log.E(err), log.Any("filter", filter))
		return nil, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return data, nil
}

// FindManyPlayletByCategoryRank 按指定分类的排序分页查询短剧
func FindManyPlayletByCategoryRank(ctx context.Context, filter bson.M, categoryId int64, skip, limit int64, sort bson.D, projection bson.D) (PlayletList, *srvdef.SrvErr) {
	if skip < 0 {
		skip = 0
	}
	if limit <= 0 {
		limit = 10
	}
	if sort == nil {
		sort = CategoryRankSort()
	}
	pipeline := []bson.M{
		{"$match": filter},
		{"$addFields": CategoryRankAddFields(categoryId)},
		{"$sort": sort},
		{"$skip": skip},
		{"$limit": limit},
	}
	pipeline = append(pipeline, bson.M{"$unset": categoryRankField})
	if len(projection) > 0 {
		proj := bson.M{}
		for _, field := range projection {
			proj[field.Key] = field.Value
		}
		pipeline = append(pipeline, bson.M{"$project": proj})
	}
	list := make(PlayletList, 0)
	if err := AggregatePlaylet(ctx, &list, pipeline); err != nil {
		return nil, err
	}
	return list, nil
}

// CountPlaylet 统计满足条件的短剧数量
func CountPlaylet(ctx context.Context, filter bson.M, opts ...*options.CountOptions) (int64, *srvdef.SrvErr) {
	count, err := coll.Count(ctx, filter, opts...)
	if err != nil {
		log.Warn("playletmod:CountPlaylet failed", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return count, nil
}

// UpdateOnePlaylet 更新一条短剧数据
func UpdateOnePlaylet(ctx context.Context, filter bson.M, update bson.M) *srvdef.SrvErr {
	result, err := coll.UpdateOne(ctx, filter, update)
	if err != nil {
		log.Warn("playletmod:UpdateOnePlaylet failed", log.E(err), log.Any("filter", filter))
		return srvdef.New(srvdef.ErrDbUpdateError, "", "")
	}
	if result.MatchedCount != 1 {
		return srvdef.New(srvdef.ErrNoData, "", "")
	}
	return nil
}

// FindOneAndUpdatePlaylet 更新一条短剧数据并返回更新后的数据
func FindOneAndUpdatePlaylet(ctx context.Context, filter bson.M, update bson.M, opts ...*options.FindOneAndUpdateOptions) (*Playlet, *srvdef.SrvErr) {
	var doc Playlet
	if err := coll.FindOneAndUpdate(ctx, &doc, filter, update, opts...); err != nil {
		if err != mongo.ErrNoDocuments {
			log.Warn("更新并查询短剧数据失败", log.E(err), log.Any("filter", filter))
			return nil, srvdef.New(srvdef.ErrDbUpdateError, "", "")
		}
		return nil, srvdef.New(srvdef.ErrNoData, "", "")
	}
	return &doc, nil
}

// UpdateManyPlaylet 批量更新短剧数据
func UpdateManyPlaylet(ctx context.Context, filter bson.M, update bson.M) *srvdef.SrvErr {
	result, err := coll.UpdateMany(ctx, filter, update)
	if err != nil {
		log.Warn("批量更新短剧数据失败", log.E(err), log.Any("filter", filter))
		return srvdef.New(srvdef.ErrDbUpdateError, "", "")
	}
	if result.MatchedCount == 0 {
		return srvdef.New(srvdef.ErrNoData, "", "")
	}
	return nil
}

// BulkWritePlaylet 批量写入短剧更新操作。
func BulkWritePlaylet(ctx context.Context, docs []mongo.WriteModel, opts ...*options.BulkWriteOptions) *srvdef.SrvErr {
	if len(docs) == 0 {
		return nil
	}
	result, err := coll.BulkWrite(ctx, docs, opts...)
	if err != nil {
		log.Warn("批量写入短剧数据失败", log.E(err))
		return srvdef.New(srvdef.ErrDbUpdateError, "", "")
	}
	if result.MatchedCount == 0 {
		return srvdef.New(srvdef.ErrNoData, "", "")
	}
	return nil
}

// AggregatePlaylet 聚合查询短剧
func AggregatePlaylet(ctx context.Context, bind interface{}, pipeline []bson.M) *srvdef.SrvErr {
	if err := coll.Aggregate(ctx, bind, pipeline); err != nil {
		log.Warn("playletmod:AggregatePlaylet failed", log.E(err), log.Any("pipeline", pipeline))
		return srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return nil
}