/**
  AutoPlay - Unobtrusive Automatic Video player for PmWiki
  Written by (c) Petko Yotov 2014    www.pmwiki.org/Petko

  This text is written for PmWiki; 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. See pmwiki.php for full details
  and lack of warranty.

  Version 20140408
*/

var AutoPlay = function() {
  var allspans = document.getElementsByTagName('span');
  var players = [];
  if(allspans)for(var i=0; i<allspans.length;i++) {
    if(/\bplayer\b/.test(allspans[i].className))
      players.push(allspans[i]);
  }

  var iframe = {
    height: '315px',
    width: '560px'
  };
  var rx = [ // more will be added in the future
    [/^http:\/\/vimeo\.com\/(\d+)$/i, 'http://player.vimeo.com/video/$1?title=0&byline=0&portrait=0&autoplay=0'],
    [/^http:\/\/www\.youtube\.com\/watch\?v=([^&]+)(&.*)?$/i, 'http://www.youtube.com/embed/$1'],
    [/^http:\/\/youtu\.be\/([^&?]+)([&?].*)?$/i, 'http://www.youtube.com/embed/$1'],
    [/^https?:\/\/[a-z-]+\.facebook\.com\/photo\.php\?v=(\d+)$/i, 'http://www.facebook.com/video/embed?video_id=$1']
  ];
  var a, W, H, player, stl, i, j, k, links, href, src, d;
  for (i=0; i<players.length; i++) {
    player = players[i];
    links = player.getElementsByTagName('a');
    if(! links) continue;
    stl = player.getAttribute('style');
    if(stl != null && typeof stl == 'object') { // MSIE<8
      stl="width:"+player.style.width+';'+" height:"+player.style.height+';'
    }
    if(stl) {
      a = stl.match(/width: *([0-9\.]+ *(%|p[xtc]|e[mx]|[mc]?m))/i)
      W = (a) ? a[1] : iframe.width;
      a = stl.match(/height: *([\d.]+ *(%|p[xtc]|e[mx]|[mc]?m))/i)
      H = (a) ? a[1] : iframe.height;
    }
    else {
      W = iframe.width;
      H = iframe.height;
    }

    for (j=0; j<links.length; j++) {
      var lnk = links[j];
      href = lnk.href;
      for(k=0; k<rx.length; k++) {
        if(! href.match(rx[k][0])) continue;
        src = href.replace(rx[k][0], rx[k][1]);
        var d = document.createElement("iframe");
        d.frameborder=0;
        d.marginheight=0;
        d.marginwidth=0;
        d.allowfullscreen = true;
        d.src=src;
        d.setAttribute('style', "border: 1px solid black; display: block; width: "+W+"; height: "+H+";");

        lnk.parentNode.insertBefore(d, lnk);

        lnk.style.display = 'none';
        break;
      }
    }
  }
}
setTimeout("AutoPlay()", 50);