'use strict'

const customUsersValidators = require('../helpers/custom-validators').users

module.exports = function (sequelize, DataTypes) {
  const Author = sequelize.define('Author',
    {
      name: {
        type: DataTypes.STRING,
        allowNull: false,
        validate: {
          usernameValid: function (value) {
            const res = customUsersValidators.isUserUsernameValid(value)
            if (res === false) throw new Error('Username is not valid.')
          }
        }
      }
    },
    {
      indexes: [
        {
          fields: [ 'name' ]
        },
        {
          fields: [ 'podId' ]
        },
        {
          fields: [ 'userId' ]
        }
      ],
      classMethods: {
        associate
      }
    }
  )

  return Author
}

// ---------------------------------------------------------------------------

function associate (models) {
  this.belongsTo(models.Pod, {
    foreignKey: {
      name: 'podId',
      allowNull: true
    },
    onDelete: 'cascade'
  })

  this.belongsTo(models.User, {
    foreignKey: {
      name: 'userId',
      allowNull: true
    },
    onDelete: 'cascade'
  })
}