<?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 App\Models\Game;
use Log;
use App\Downloader;

abstract class Source {
  // Title
  public $title;
  // Optional warning or note
  public $warning = FALSE;
  protected $dom;
  protected $downloader;
  /**
   * 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, $post = []) {
    if (empty($this->downloader)) {
      $this->downloader = new Downloader();
    }
    return $this->downloader->get_text($url, $post);
  }

  /**
   * GET JSON data.
   */
  public function get_json($url) {
    if (empty($this->downloader)) {
      $this->downloader = new Downloader();
    }
    return $this->downloader->get_json($url);
  }

  public function set_cookies($cookies) {
    return $this->downloader->setCookies($cookies);
  }

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

	/**
   * Find if we already have the game model.
	 */
	public function findGame(Game $game): Game {
    $game->source = (new \ReflectionClass($this))->getShortName();
		$dbmodel = NULL;
    if (isset($game->source_id)) {
      $dbmodel = Game::where('source', $game->source)
        ->where('source_id', $game->source_id)
        ->first();
    }
    if (is_null($dbmodel) && isset($game->url)) {
      $dbmodel = Game::where('source', $game->source)
        ->where('url', $game->url)
        ->first();
    }
    if (is_null($dbmodel) && isset($game->title)) {
      $dbmodel = Game::where('source', $game->source)
        ->where('title', $game->title)
        ->first();
    }
    if ($dbmodel) {
      return $dbmodel;
    }
    return $game;
	}

	/**
	 * Get the date of the last scraped game for this source.
	 */
	protected function getLastDate() {
		$date = Game::where('source', self::class)
			->orderBy('created_at', 'desc')
			->limit(1)
			->value('release_date');
		if (!$date) {
			return NULL;
		}
		return (new \DateTime($date));
	}
}