const mongoose = require('mongoose')
const rp = require('request-promise')

const LOCALHOST = 'http://localhost:5000'

// Remove all collections from the DB.
function cleanDb () {
  for (const collection in mongoose.connection.collections) {
    if (mongoose.connection.collections.hasOwnProperty(collection)) {
      mongoose.connection.collections[collection].deleteMany()
    }
  }
}

function authUser (agent, callback) {
  agent
    .post('/users')
    .set('Accept', 'application/json')
    .send({ user: { username: 'test', password: 'pass' } })
    .end((err, res) => {
      if (err) { return callback(err) }

      callback(null, {
        user: res.body.user,
        token: res.body.token
      })
    })
}

// This function is used to create new users.
// userObj = {
//   username,
//   password
// }
async function createUser (userObj) {
  try {
    const options = {
      method: 'POST',
      uri: `${LOCALHOST}/users`,
      resolveWithFullResponse: true,
      json: true,
      body: {
        user: {
          username: userObj.username,
          password: userObj.password
        }
      }
    }

    let result = await rp(options)

    const retObj = {
      user: result.body.user,
      token: result.body.token
    }

    return retObj
  } catch (err) {
    console.log('Error in utils.js/createUser(): ' + JSON.stringify(err, null, 2))
    throw err
  }
}

module.exports = {
  cleanDb,
  authUser,
  createUser
}