package announcementmod

import (
	"context"
	"fmt"
	"hkdj-web-server/pub/common/log"
	"hkdj-web-server/pub/common/srvdef"
	"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 db *mongos.Collection

func Init(ctx context.Context) {
	db = mongos.Shop.Coll(TN.Announcement)
	indexes := []mongo.IndexModel{
		{
			Keys: bson.D{
				{Key: FN.Announcement.Status, Value: 1},
				{Key: FN.Announcement.Sort, Value: -1},
			},
		},
		{
			Keys: bson.D{
				{Key: FN.Announcement.CreatedAt, Value: -1},
			},
		},
	}
	if _, err := db.CreateIndex(ctx, indexes); err != nil {
		panic(fmt.Sprintf("(announcementmod:Init) Create Announcement Index failed! err:%+v:", err))
	}
}

func InsertOneAnnouncement(ctx context.Context, doc *Announcement) *srvdef.SrvErr {
	if _, err := db.InsertOne(ctx, doc); err != nil {
		log.Warn("announcementmod:InsertOneAnnouncement db.InsertOne failed",
			log.E(err), log.Any("doc", doc))
		return srvdef.New(srvdef.ErrDbInsertError, "", "")
	}
	return nil
}

func DelOneAnnouncement(ctx context.Context, filter bson.M) (int64, *srvdef.SrvErr) {
	count, err := db.DeleteOne(ctx, filter)
	if err != nil {
		log.Warn("announcementmod:DelOneAnnouncement db.DeleteOne failed",
			log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbDeleteError, "", "")
	}
	return count, nil
}

func FindOneAnnouncement(ctx context.Context, filter bson.M) (*Announcement, *srvdef.SrvErr) {
	var doc Announcement
	if err := db.FindOneEx(ctx, &doc, filter); err != nil {
		if err != mongo.ErrNoDocuments {
			log.Warn("announcementmod:FindOneAnnouncement db.FindOne failed",
				log.E(err), log.Any("filter", filter))
			return nil, srvdef.New(srvdef.ErrDbQueryError, "", "")
		}
		return nil, srvdef.New(srvdef.ErrAnnouncementNotExsit, "", "")
	}
	return &doc, nil
}

func FindManyAnnouncement(ctx context.Context, filter bson.M, opts ...*options.FindOptions) (AnnouncementList, *srvdef.SrvErr) {
	data := make(AnnouncementList, 0)
	if err := db.Find(ctx, &data, filter, opts...); err != nil {
		log.Warn("announcementmod:FindManyAnnouncement db.Find failed",
			log.E(err), log.Any("filter", filter))
		return nil, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return data, nil
}

func CountAnnouncement(ctx context.Context, filter bson.M) (int64, *srvdef.SrvErr) {
	count, err := db.Count(ctx, filter)
	if err != nil {
		log.Warn("announcementmod:CountAnnouncement db.Count failed",
			log.E(err), log.Any("filter", filter))
		return 0, srvdef.New(srvdef.ErrDbQueryError, "", "")
	}
	return count, nil
}

func UpdateOneAnnouncement(ctx context.Context, filter bson.M, update bson.M) *srvdef.SrvErr {
	result, err := db.UpdateOne(ctx, filter, update)
	if err != nil {
		log.Warn("announcementmod:UpdateOneAnnouncement db.UpdateOne failed",
			log.E(err), log.Any("filter", filter))
		return srvdef.New(srvdef.ErrDbUpdateError, "", "")
	}
	if result.MatchedCount != 1 {
		log.Warn("announcementmod:UpdateOneAnnouncement not matched",
			log.Any("filter", filter))
		return srvdef.New(srvdef.ErrAnnouncementNotExsit, "", "")
	}
	return nil
}