package srv_videotopic

import (
	"context"
	"time"
	"videoweb/pub/common/srvdef"
	"videoweb/pub/models/videotopicmod"
	"videoweb/pub/mongos"
	"videoweb/web/service/srv_videoslug"

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

// GetVideoTopics 按照参数搜索视频分类
func GetVideoTopics(ctx context.Context, param *VideoTopicReq) (*VideoTopicResp, *srvdef.SrvErr) {
	filter := bson.M{}
	if param.VideoCategoryId != nil {
		filter[videotopicmod.FN.VideoTopicModel.VideoCategoryId] = *param.VideoCategoryId
	}
	opt := &options.FindOptions{}
	resp := &VideoTopicResp{}

	opt.SetSort(bson.M{videotopicmod.FN.VideoTopicModel.Rank: -1})
	opt.SetSkip((param.PageNum - 1) * param.PageSize).SetLimit(param.PageSize)

	total, serr := videotopicmod.CountVideoTopicModels(ctx, filter)
	if serr != nil {
		return resp, serr
	}
	resp.Total = total
	if total == 0 {
		return resp, nil
	}
	ads, serr := videotopicmod.FindManyVideoTopicModels(ctx, filter, opt)
	if serr != nil {
		return resp, serr
	}
	resp.List = ads

	return resp, nil
}

// AddVideoTopic 添加一个视频分类
func AddVideoTopic(ctx context.Context,
	ac *videotopicmod.VideoTopicModel) *srvdef.SrvErr {

	ac.Id = mongos.Lid.VideoTopic.Get()
	now := time.Now()
	ac.CreatedAt = now
	ac.UpdatedAt = now
	if serr := srv_videoslug.EnsureTopic(ctx, ac, 0); serr != nil {
		return serr
	}

	serr := videotopicmod.InsertOneVideoTopicModel(ctx, ac)
	if serr != nil {
		return serr
	}
	return nil
}

// DelVideoTopic 删除指定视频分类
func DelVideoTopic(ctx context.Context, id int64) *srvdef.SrvErr {
	adFilter := bson.M{videotopicmod.FN.VideoTopicModel.Id: id}
	//删除
	count, serr := videotopicmod.DelOneVideoTopicModel(ctx, adFilter)
	if serr != nil {
		return serr
	}
	if count == 0 {
		return srvdef.New(srvdef.ErrNoData, "", "")
	}
	return nil
}

// UpdateVideoTopic 更新指定视频分类
func UpdateVideoTopic(ctx context.Context, id int64, param VideoTopicUpdate) *srvdef.SrvErr {
	now := time.Now()
	param.UpdatedAt = now

	info, serr := videotopicmod.FindOneVideoTopicModel(ctx, bson.M{videotopicmod.FN.VideoTopicModel.Id: id})
	if serr != nil {
		return serr
	}
	name := info.Name
	if param.Name != nil {
		name = *param.Name
	}
	keywords := info.SeoInfo.Keyworld
	if param.SeoInfo != nil {
		keywords = param.SeoInfo.Keyworld
	}
	slug, changed, slugErr := srv_videoslug.PrepareTopicOnUpdate(ctx, info, param.Slug, name, keywords)
	if slugErr != nil {
		return slugErr
	}
	if changed {
		param.Slug = &slug
	} else {
		param.Slug = nil
	}

	adFilter := bson.M{videotopicmod.FN.VideoTopicModel.Id: id}
	param.IndexNow = nil
	if param.IsReIndexNow != nil && *param.IsReIndexNow {
		indexNow := int64(0)
		param.IndexNow = &indexNow
	}
	updateDoc := bson.M{"$set": param}
	serr = videotopicmod.UpdateOneVideoTopicModel(ctx, adFilter, updateDoc)
	if serr != nil {
		return serr
	}
	return nil
}