package playletchapterunlockmod

import (
	"context"
	"fmt"
	"hkdj-web-server/pub/common/log"
	"hkdj-web-server/pub/common/srvdef"
	"hkdj-web-server/pub/common/utils"
	"hkdj-web-server/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 playlet_chapter_unlock 集合和索引。
func Init(ctx context.Context) {
	coll = mongos.Shop.Coll(TN.PlayletChapterUnlock)
	initIndex(ctx)
}

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

// InsertOnePlayletChapterUnlock 插入解锁记录。
//
// 返回 inserted=false 表示该用户已经解锁过该剧集；调用方应将其视为幂等成功，不可继续扣费。
func InsertOnePlayletChapterUnlock(ctx context.Context, doc *PlayletChapterUnlock) (bool, *srvdef.SrvErr) {
	if doc.Id == 0 {
		doc.Id = mongos.Lid.PlayletChapterUnlock.Get()
	}
	now := utils.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("插入短剧剧集解锁记录失败", log.Any("doc", doc), log.E(err))
		return false, srvdef.New(srvdef.ErrDbInsertError, "", "")
	}
	return true, nil
}

// ExistsPlayletChapterUnlock 判断用户是否已解锁指定剧集。
func ExistsPlayletChapterUnlock(ctx context.Context, userId int64, chapterId int64) (bool, *srvdef.SrvErr) {
	if userId <= 0 || chapterId <= 0 {
		return false, nil
	}
	var doc PlayletChapterUnlock
	err := coll.FindOneEx(ctx, &doc, bson.M{
		FN.PlayletChapterUnlock.UserId:    userId,
		FN.PlayletChapterUnlock.ChapterId: chapterId,
	}, options.FindOne().SetProjection(bson.D{
		{Key: FN.PlayletChapterUnlock.Id, Value: 1},
	}))
	if err != nil {
		if err == mongo.ErrNoDocuments {
			return false, nil
		}
		log.Warn("查询短剧剧集解锁记录失败", log.E(err), log.Any("userId", userId), log.Any("chapterId", chapterId))
		return false, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return doc.Id > 0, nil
}

// DeleteManyPlayletChapterUnlock 按条件批量删除剧集解锁记录。
func DeleteManyPlayletChapterUnlock(ctx context.Context, filter bson.M) (int64, *srvdef.SrvErr) {
	count, err := coll.DeleteMany(ctx, filter)
	if err != nil {
		log.Warn("批量删除短剧剧集解锁记录失败", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbDeleteError, "", "")
	}
	return count, nil
}

// FindManyPlayletChapterUnlock 按条件查询多条剧集解锁记录。
func FindManyPlayletChapterUnlock(ctx context.Context, filter bson.M, opts ...*options.FindOptions) (PlayletChapterUnlockList, *srvdef.SrvErr) {
	data := make(PlayletChapterUnlockList, 0)
	if err := coll.Find(ctx, &data, filter, opts...); err != nil {
		log.Warn("查询短剧剧集解锁记录列表失败", log.E(err), log.Any("filter", filter))
		return nil, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return data, nil
}

// CountPlayletChapterUnlock 统计满足条件的剧集解锁记录数量
func CountPlayletChapterUnlock(ctx context.Context, filter bson.M, opts ...*options.CountOptions) (int64, *srvdef.SrvErr) {
	count, err := coll.Count(ctx, filter, opts...)
	if err != nil {
		log.Warn("统计短剧剧集解锁记录数量失败", log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return count, nil
}

// AggregatePlayletChapterUnlock 聚合查询剧集解锁记录
func AggregatePlayletChapterUnlock(ctx context.Context, bind interface{}, pipeline []bson.M) *srvdef.SrvErr {
	if err := coll.Aggregate(ctx, bind, pipeline); err != nil {
		log.Warn("聚合短剧剧集解锁记录失败", log.E(err), log.Any("pipeline", pipeline))
		return srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return nil
}