<?php
namespace App\Http\Controllers;

use Illuminate\Http\Request;
use Illuminate\Routing\Controller as BaseController;
use Log;
use App\Player, App\Team, App\Tweet, App\TransitCenter, App\TransitLine, App\Document, App\Mission;
use App\Events\NewTweetEvent;
use Twitter;

class ImportController extends BaseController
{
  public function __construct() {
    $this->middleware('auth');
  }

  public function index(Request $request) {
    return view('import', []);
  }

  public function preview(Request $request) {
    $url = $request->input('url');
    if(preg_match('/twitter\.com\/.+\/status(?:es)?\/(\d+)/', $url, $match)) {
      $tweetID = $match[1];
    } else {
      return response()->json(['error'=>'Invalid URL']);
    }

    try {
      $data = Twitter::getTweet($tweetID);
    } catch(\Exception $e) {
      return response()->json(['error'=>'Could not fetch tweet']);
    }

    $player = Player::where('twitter_user_id', $data->user->id_str)->first();

    if(!$player) {
      return response()->json(['error'=>'Couldn\'t find the player for this tweet. Check that they are added to a team.']);
    }

    $tweet = self::buildTweetFromTwitterObject($player, $data);
    $event = new NewTweetEvent($tweet);

    unset($event->socket);

    return response()->json($event);
  }

  public function save(Request $request) {
    $tweetID = $request->input('tweet_id');

    try {
      $data = Twitter::getTweet($tweetID);
    } catch(\Exception $e) {
      return response()->json(['error'=>'Could not fetch tweet']);
    }

    $player = Player::where('twitter_user_id', $data->user->id_str)->first();

    if(!$player) {
      return response()->json(['error'=>'Couldn\'t find the player for this tweet. Check that they are added to a team.']);
    }

    $tweet = self::buildTweetFromTwitterObject($player, $data);
    $tweet->save();

    if($tweet->mission_id && $tweet->team_id) {
      event(new NewTweetEvent($tweet));
    }

    return response()->json(['result'=>'ok']);
  }

  private static function buildTweetFromTwitterObject($player, $data) {

    if(isset($data->extended_tweet->full_text))
      $text = $data->extended_tweet->full_text;
    else
      $text = $data->text;

    // Unshorten URLs
    if(isset($data->entities->urls)) {
      foreach($data->entities->urls as $url) {
        $text = str_replace($url->url, $url->expanded_url, $text);
      }
    }

    // Remove media URLs from tweet text
    $photos = [];
    if(isset($data->extended_entities->media)) {
      foreach($data->extended_entities->media as $media) {
        $text = str_replace($media->url, '', $text);
        $photos[] = $media->media_url_https;
      }
      $text = trim($text);
    }

    $mission_id = 0;
    foreach(Mission::all() as $mission) {
      if(strpos($text, $mission->hashtag) !== false) {
        $mission_id = $mission->id;
      }
    }

    $tweet = new Tweet;
    $tweet->tweet_id = $data->id_str;
    $tweet->player_id = $player ? $player->id : 0;
    $tweet->team_id = $player ? $player->team->id : 0;
    $tweet->text = $text;
    $tweet->photo = json_encode($photos, JSON_UNESCAPED_SLASHES);
    $tweet->mission_id = $mission_id;
    $tweet->tweet_date = date('Y-m-d H:i:s', strtotime($data->created_at));
    $tweet->geo = json_encode($data->geo);
    $tweet->place = json_encode($data->place);
    $tweet->author_username = $data->user->screen_name;
    $tweet->author_photo = $data->user->profile_image_url_https;
    $tweet->json = json_encode($data);
    return $tweet; 
  }

}