import mongoose from 'mongoose';
import { MongoMemoryServer } from 'mongodb-memory-server';

let mongoServer;

export const connectDatabase = async () => {
  mongoServer = await MongoMemoryServer.create();
  const uri = mongoServer.getUri();
  
  await mongoose.connect(uri, {
    useNewUrlParser: true,
    useUnifiedTopology: true,
  });
};

export const closeDatabase = async () => {
  await mongoose.connection.dropDatabase();
  await mongoose.connection.close();
  if (mongoServer) {
    await mongoServer.stop();
  }
};

export const clearDatabase = async () => {
  const collections = mongoose.connection.collections;
  
  for (const key in collections) {
    const collection = collections[key];
    await collection.deleteMany();
  }
};

export const seedDatabase = async (model, data) => {
  return await model.create(data);
};