<?php namespace Zoomyboy\Social\FormWidgets;

use \Session;
use Backend\Classes\FormWidgetBase;
use Zoomyboy\Social\Classes\InstagramService;
use Zoomyboy\Social\Models\InstagramUser;
use Zoomyboy\Social\Models\Page;
use Zoomyboy\Social\Models\Setting;

/**
 * InstagramLogin Form Widget
 */
class InstagramLogin extends FormWidgetBase
{
    /**
     * @inheritDoc
     */
    protected $defaultAlias = 'zoomyboy_social_instagram_login';

    /**
     * @inheritDoc
     */
    public function init()
    {
        if (request()->has('code') && request()->query('state') == Session::get('instagram_auth_state')) {
            $accessToken = app(InstagramService::class)->authenticate();
            $this->storeUser($accessToken);
        }
    }

    public function render()
    {
        $this->prepareVars();
        return $this->makePartial('instagramlogin');
    }

    /**
     * Prepares the form widget view data
     */
    public function prepareVars()
    {
        $state = str_random('20');
        Session::put('instagram_auth_state', $state);
        $this->vars['name'] = $this->formField->getName();
        $this->vars['value'] = $this->getLoadValue();
        $this->vars['model'] = $this->model;
        $this->vars['client_id'] = app(InstagramService::class)->clientId();
        $this->vars['redirect_url'] = app(InstagramService::class)->redirectUri();
        $this->vars['state'] = $state;
    }

    public function loadAssets()
    {
        $this->addCss('css/facebooklogin.css', 'zoomyboy.social');
        $this->addJs('js/facebooklogin.js', 'zoomyboy.social');
    }

    public function getSaveValue($value)
    {
        return $value;
    }

    private function storeUser(string $accessToken): void
    {
        $me = app(InstagramService::class)->me($accessToken);

        Page::create([
            'access_token' => $accessToken,
            'type' => app(InstagramService::class)->getType(),
            'name' => $me['username'],
            'remote_id' => $me['id'],
        ]);
    }

}