<?php
/*
  A set of utilities for tracking text-based game releases
  Copyright (C) 2017-2018  Alexander Yakovlev

  This program is free software: you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.

  This program is distributed in the hope that it will be useful,
  but WITHOUT ANY WARRANTY; without even the implied warranty of
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  GNU General Public License for more details.

  You should have received a copy of the GNU General Public License
  along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/
namespace App;

use \Symfony\Component\DomCrawler\Crawler;
use \GuzzleHttp\Client as GuzzleClient;
use App\Models\Game;

abstract class Source {
  // Title
  public $title;
  // Optional warning or note
  public $warning = FALSE;
  protected $dom;
  protected $cookies = '';
  /**
   * Should be load the page before the parsing or during
   *
   * @var boolean
   */
  public $delayedLoad = false;

  public function loadStr($html) {
    $this->dom = new Crawler($html);
  }

  abstract public function parse();

  /**
   * System function to download page HTML.
   *
   * @return string
   */
  public function get_text($url, $post = []) {
    $client = new GuzzleClient([
      'timeout' => 30,
    ]);
    if ($post === []) {
      $response = $client->request('GET', $url, [
        'cookies' => $this->cookies,
      ]);
    } else {
      $response = $client->request('POST', $url, [
        'form_params' => $post,
        'cookies' => $this->cookies,
      ]);
    }
    return (string) $response->getBody();
  }

  /**
   * GET JSON data.
   */
  public function get_json($url) {
    $client = new GuzzleClient([
      'timeout' => 30,
    ]);
    $response = $client->request('GET', $url, [
      'cookies' => $this->cookies,
    ]);
    $text = (string) $response->getBody();
    return json_decode($text);
  }

	/**
	 * Check if URL corresponds to this source.
	 *
	 * @return boolean
	 */
	public function checkPage($url) {
		return false;
	}

	/**
	 * Save the game if not a duplicate.
	 */
	public function saveGame(Game $game) {
		$game->source = self::class;
		$dbmodel = NULL;
		if (isset($game->source_id)) {
			$dbmodel = Game::where('source', $game->source)
				->where('source_id', $game->source_id)
				->first();
		}
		if ($dbmodel) {
			$dbmodel->fill($game);
			$dbmodel->save();
		} else {
			$game->save();
		}
	}

	/**
	 * Get the date of the last scraped game for this source.
	 */
	protected function getLastDate() {
		Game::where('source', self::class)
			->orderBy('created_at', 'desc')
			->limit(1)
			->value('created_at');
	}
}