<?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 Mediawiki\Api\MediawikiApi;
use Mediawiki\Api\ApiUser;
use Mediawiki\Api\MediawikiFactory;
use Mediawiki\DataModel\Content;
use Mediawiki\DataModel\Title;
use Mediawiki\DataModel\PageIdentifier;
use Mediawiki\DataModel\Revision;
use Illuminate\Support\Str;
use App\Models\Language;

class Wikipage {
  protected $game;
  protected $api;
  protected $services;
  protected $content;
  protected $fileUploader;
  protected $covername;

  public function __construct($game) {
    $this->game = $game;

    if (!env('DRY_RUN')) {
      try {
        // Log in to a wiki
        $api = new MediawikiApi( env('WIKI') );
        $api->login( new ApiUser( env('WIKIUSER'), env('WIKIPASSWORD') ) );
        $services = new MediawikiFactory( $api );
        $this->api = $api;
        $this->services = $services;
        $this->fileUploader = $services->newFileUploader();
      } catch (\Exception $e) {
        echo 'Ошибка соединения.'.PHP_EOL;
        echo $e->getMessage();
        echo $e->getTraceAsString();
        return;
      }
    }
  }

  public function create() {
    if (!empty($this->game->image_url)) {
      $filename = preg_replace('/\?.*/', '', basename($this->game->image_url));
      $extension = pathinfo($filename, PATHINFO_EXTENSION);
      $this->covername = Str::slug($this->game->title, '_').'.'.$extension;
    }

    $pagetitle = strtr($this->game->title, [
      '|' => '-'
    ]);
    if (empty($pagetitle)) {
      echo 'ERROR: Page has no title.';
      print_r($this->game);
      return;
    }
    $exists = $this->exists($pagetitle);
    if (!env('DRY_RUN') && !$exists) {
      if (!empty($this->game->image_url) && isset($filename)) {
        if ($this->services->newPageGetter()->getFromTitle($this->covername)) {
          try {
            $image = file_get_contents($this->game->image_url);
            file_put_contents($filename, $image);
            $extension = mime_content_type($filename);
            if (strpos($extension, 'image') !== FALSE) {
              $extension = str_replace('image/', '', $extension);
              $this->covername = Str::slug($this->game->title, '_').'.'.$extension;
            $this->fileUploader->upload($this->covername, $filename);
            }
            unlink($filename);
          } catch (\Exception $e) {
            echo '(Обложка не найдена)'.PHP_EOL;
          }
        }
      }
    }

    $this->makeContent();

    if (!env('DRY_RUN') && !$exists) {
      $newContent = new Content( $this->content );
      $title = new Title($pagetitle);
      $identifier = new PageIdentifier($title);
      $revision = new Revision($newContent, $identifier);
      $this->services->newRevisionSaver()->save($revision);
      return true;
    } else {
      if ($exists) {
        echo "Страница игры уже существует. Автосоздание невозможно.\n";
        echo $this->content;
        return false;
      }
      if (env('DRY_RUN')) {
        echo "Черновой режим. Автосоздание невозможно.\n";
      }
      echo $this->content;
      return true;
    }
  }

  protected function makeContent() {
    $this->content = '{{game info';

    $this->txtadd('title', ' |название='.$this->game->title);
    $authors = $this->game->authors->all();

    if (count($authors) > 0) {
      $this->content .= PHP_EOL.' |автор=';
      $i = 0;
      $l = count($authors);
      foreach ($authors as $author) {
        $author_name = $author->name;
        $this->content .= '[[Автор::'.$author_name.']]';
        $i++;
        if ($i < $l) {
          $this->content .= '; ';
        }
      }
    }

    if (!empty($this->game->release_date)) {
      $date = (new \DateTime($this->game->release_date))->format('d.m.Y');
      $this->content .= PHP_EOL.' |вышла='.$date;
    }

    $platforms = $this->game->platforms()->pluck('title')->toArray();
    if (!empty($platforms)) {
      $this->txtadd('platform', ' |платформа='.implode(',', $platforms));
    }
    $this->txtadd('image', ' |обложка='.$this->covername);
    $languages = $this->game->languages()->pluck('title_ru')->toArray();
    if (!empty($languages)) {
      $this->txtadd('language', ' |язык='.implode(',', $languages));
    }
    $ru = Language::findByCode('ru');
    $tags = $this->game->tags()->where('language_id', $ru->id)->pluck('title')->toArray();
    if (!empty($tags)) {
      $this->content .= PHP_EOL.' |темы='.implode(',', $tags);
    }

    $this->content .= "\n}}\n";

    $this->txtadd('description', $this->game->description);
    if (!empty($this->game->url_download) || !empty($this->game->url_play_online)) {
      $this->content .= "\n== Версии ==";
    }
    $this->txtadd('url_online', PHP_EOL.'* ['.$this->game->url_play_online.' '.$this->game->url_online_description.']');
    if (!empty($this->game->url_download)) {
      if (!empty($this->game->url_download_description)) {
        $this->content .= PHP_EOL.'* ['.$this->game->url_download.' '.$this->game->url_download_description.']';
      } else {
        $this->content .= PHP_EOL.'* ['.$this->game->url_download.' Скачать игру]';
      }
    }
    if (!empty($this->game->url_discussion) || !empty($this->game->url)) {
      $this->content .= "\n== Ссылки ==";
    }
    if ($this->game->url_discussion === $this->game->url) {
      $this->txtadd('url', '* {{ссылка|на='.$this->game->url.'|Страница игры с обсуждением}}');
    } else {
      $this->txtadd('url_discussion', '* {{ссылка|на='.$this->game->url_discussion.'|Обсуждение игры}}');
      $this->txtadd('url', '* {{ссылка|на='.$this->game->url.'|Страница игры}}');
    }
  }

  protected function txtadd($param, $text) {
    if (!empty($this->game->$param)) {
      $this->content .= PHP_EOL.rtrim($text);
    }
  }

  /**
   * Checks if the page exists.
   *
   * @param string $pagename
   * @return boolean
   */
  protected function exists($pagename) {
    if (env('DRY_RUN')) {
      return false;
    }
    $page = $this->services->newPageGetter()->getFromTitle((string) $pagename);
    return !($page->getId() === 0);
  }
}