import mongoose from 'mongoose';

import {config} from './config';

async function resetMongo(): Promise<void> {
  try{
    // await clearContests();
    // await clearProblems();
    // await clearSessions();
  }catch(err: unknown){
    throw new Error(`MongoDB reset failed. ${err}`);
  }
}

async function initializeMongo(): Promise<void> {
  try{
    await resetMongo();
  }catch(err: unknown){
    throw new Error(`MongoDB initialize failed. ${err}`);
  }
}

export async function runMongo(): Promise<void> {
  try {
    mongoose.set('strictQuery', false);
		const auth: string = `${config.mongodb.user}:${config.mongodb.pass}`;
		const server: string = `${config.mongodb.host}:${config.mongodb.port}`;
		const uri: string = `mongodb://${auth}@${server}/${config.mongodb.db}`;
    await mongoose.connect(uri);
  } catch(err: unknown) {
    throw new Error(`MongoDB connection failed. ${err}`);
  }
  try {
    await initializeMongo();
  } catch(err: unknown) {
    throw new Error(`Initialize MongoDB data failed. ${err}`);
  }
}