<?php
// Glue code for handling a Tinyboard post.
// Portions of this file are derived from Tinyboard code.

function postHandler($post) {
    global $board, $config;

    if ($post->has_file) foreach ($post->files as &$file) if ($file->extension == 'webm' || $file->extension == 'mp4') {
      if ($config['webm']['use_ffmpeg']) {
        require_once dirname(__FILE__) . '/ffmpeg.php';
        $webminfo = get_webm_info($file->file_path);

        if (empty($webminfo['error'])) {
          $file->width = $webminfo['width'];
          $file->height = $webminfo['height'];

          if ($config['spoiler_images'] && isset($_POST['spoiler'])) {
            $file = webm_set_spoiler($file);
          }
          else {
            $file = set_thumbnail_dimensions($post, $file);
            $tn_path = $board['dir'] . $config['dir']['thumb'] . $file->file_id . '.jpg';

            if(0 == make_webm_thumbnail($file->file_path, $tn_path, $file->thumbwidth, $file->thumbheight)) {
              $file->thumb = $file->file_id . '.jpg';
            }
            else {
              $file->thumb = 'file';
            }
          }
        }
        else {
          return $webminfo['error']['msg'];
        }
      }
      else {
        require_once dirname(__FILE__) . '/videodata.php';
        $videoDetails = videoData($file->file_path);
        if (!isset($videoDetails['container']) || $videoDetails['container'] != 'webm') return "not a WebM file";

        // Set thumbnail
        $thumbName = $board['dir'] . $config['dir']['thumb'] . $file->file_id . '.webm';
        if ($config['spoiler_images'] && isset($_POST['spoiler'])) {
            // Use spoiler thumbnail
              $file = webm_set_spoiler($file);
        } elseif (isset($videoDetails['frame']) && $thumbFile = fopen($thumbName, 'wb')) {
            // Use single frame from video as pseudo-thumbnail
            fwrite($thumbFile, $videoDetails['frame']);
            fclose($thumbFile);
            $file->thumb = $file->file_id . '.webm';
        } else {
            // Fall back to file thumbnail
            $file->thumb = 'file';
        }
        unset($videoDetails['frame']);

        // Set width and height
        if (isset($videoDetails['width']) && isset($videoDetails['height'])) {
            $file->width = $videoDetails['width'];
            $file->height = $videoDetails['height'];

            if ($file->thumb != 'file' && $file->thumb != 'spoiler') {
                  $file = set_thumbnail_dimensions($post, $file);
                }
            }
        }
    }
}

function set_thumbnail_dimensions($post,$file) {
  global $board, $config;

  $tn_dimensions = array();
  $tn_maxw = $post->op ? $config['thumb_op_width'] : $config['thumb_width'];
  $tn_maxh = $post->op ? $config['thumb_op_height'] : $config['thumb_height'];

  if ($file->width > $tn_maxw || $file->height > $tn_maxh) {
      $file->thumbwidth = min($tn_maxw, intval(round($file->width * $tn_maxh / $file->height)));
      $file->thumbheight = min($tn_maxh, intval(round($file->height * $tn_maxw / $file->width)));
  } else {
      $file->thumbwidth = $file->width;
      $file->thumbheight = $file->height;
  }

  return $file;
}

function webm_set_spoiler($file) {
  global $board, $config;

  $file->thumb = 'spoiler';
  $size = @getimagesize($config['spoiler_image']);
  $file->thumbwidth = $size[0];
  $file->thumbheight = $size[1];

  return $file;
}