const {body} = require('express-validator')
const db = require('../../db')

const validators = module.exports = {}

validators.passwordRestrictions = body('password').isString().isLength({min: 8, max: 100}).withMessage('Password must be at least 8 characters')

validators.bothPasswordsMatch = body('password').custom((pass, {req})=>{
  if(pass !== req.body.password2)
    throw new Error('Passwords do not match')
  return true
})

validators.emailRestrictions = body('email').isString().isEmail().withMessage('Email invalid')

validators.checkEmailNotUsed = body('email').custom(async email=>{
  const user = await db.user.findByEmail(email)
  if(user) throw new Error('Email already in use')
})

validators.urlSlugRestrictions = field => body(field).isString().isLength({min: 3, max: 20}).matches(/[-a-z0-9_]*/i)
  .withMessage('Slug can be between 3-20 characters long, and can include letters, numbers, dash or underscore')