package database

import (
	"context"
	"log"
	"strings"
	"time"

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

var MongoClient *mongo.Client
var MongoDb *mongo.Database

func InitMongo(uri string) (*mongo.Client, error) {
	ctx, cancel := context.WithTimeout(context.Background(), 10*time.Second)
	defer cancel()

	client, err := mongo.Connect(ctx, options.Client().ApplyURI(uri))
	if err != nil {
		log.Fatal("Mongo connect error:", err)
		return nil, err
	}

	if err := client.Ping(ctx, nil); err != nil {
		log.Fatal("Mongo ping error:", err)
		return nil, err
	}

	MongoClient = client
	log.Println("MongoDB connected:", uri)

	parts := strings.Split(uri, "/")
	dbName := parts[len(parts)-1] // 最后一段就是数据库名
	MongoDb = client.Database(dbName)

	return client, nil
}

func GetCollection(collName string) *mongo.Collection {
	return MongoDb.Collection(collName)
}