<?php

/**
 * LDCCRM For Wordpress usage
 * php version 5
 *
 * @category API
 * @package  None
 * @author   Jérémy Munsch <jeremy.munsch@ldc.fr>
 * @license  MIT https://opensource.org/licenses/MIT
 * @version  GIT: 0.0.1
 * @link     /
 */

namespace LDCCRM;

use Exception;
use JsonSerializable;

/**
 * Class de gestion des users en session avec Wordpress
 * Compatible avec php5
 *
 * @category API
 * @package  None
 * @author   Jérémy Munsch <jeremy.munsch@ldc.fr>
 * @license  MIT https://opensource.org/licenses/MIT
 * @link     /
 */
class WPCrmUser implements JsonSerializable
{
    /**
     * The CRM ID
     *
     * @var int
     */
    protected $crm_id = null;

    /**
     * The CRM hashcode (UUID)
     *
     * @var string
     */
    protected $hashcode = null;

    /**
     * The CRM customer email
     *
     * @var string
     */
    protected $email = null;

    /**
     * The CRM customer info (the api response)
     *
     * @var object
     */
    protected $info = null;

    /**
     * WPCrmUser construct
     *
     * @param integer $crm_id   The crm id.
     * @param string  $hashcode The customer hashcode (UUID).
     * @param string  $email    The customer email.
     */
    public function __construct($crm_id, $hashcode, $email)
    {
        $this->crm_id   = $crm_id;
        $this->hashcode = $hashcode;
        $this->email    = $email;
    }

    /**
     * Magic getter
     *
     * @param string $prop The prop to get.
     *
     * @return integer|string
     */
    public function __get($prop)
    {
        if (is_null($this->info)) {
            /**
             * Object response
             *
             * @var object
             */
            WPCrm::getUserFromApi($this->email);
        }
        if (!array_key_exists($prop, (array)$this->info)) {
            throw new Exception('This value does not exists');
        }
        return $this->info->{$prop};
    }

    /**
     * Set the customer info
     * with api response
     *
     * @param object $info The Api object reponse (user)
     *
     * @return void
     */
    public function setInfo($info)
    {
        if (is_null($info) or is_null($info->email)) {
            throw new Exception('Info cannot be null');
        }
        $this->info     = $info;
        $this->crm_id   = $info->crm_id;
        $this->email    = $info->email;
        $this->hashcode = $info->hashcode;
    }

    /**
     * Generate a user from session data
     *
     * @param string $string The json data stored in session
     *
     * @return \LDCCRM\WPCrmUser
     */
    public static function parseFromJson($string)
    {
        $a = json_decode($string, true);
        return new self(
            $a['crm_id'],
            $a['hashcode'],
            $a['email'],
            $a['info']
        );
    }

    /**
     * Serialize this object to an array
     *
     * @return array
     */
    public function jsonSerialize()
    {
        return [
            'crm_id'   => $this->crm_id,
            'hashcode' => $this->hashcode,
            'email' => $this->email,
            'info' => $this->info
        ];
    }
}