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Video Url Parser

urlParser to get extract information like provider, videoId and other from urls

สคริปต์นี้ไม่ควรถูกติดตั้งโดยตรง มันเป็นคลังสำหรับสคริปต์อื่น ๆ เพื่อบรรจุด้วยคำสั่งเมทา // @require https://update.greasyfork.org/scripts/2859/30624/Video%20Url%20Parser.js 

// ==UserScript==
// @name           Video Url Parser
// @namespace      Zod-
// @description    urlParser to get extract information like provider, videoId and other from urls
// @source         https://github.com/Zod-/jsVideoUrlParser
// @copyright      Zod-
// @version        0.5
// @license        MIT
// ==/UserScript==
function URLParser() {
  "use strict";
  this.plugins = {};
}
URLParser.prototype.parse = function(url) {
  "use strict";
  var th = this,
  match = url.match(/(?:https?:\/\/)?(?:[^\.]+\.)?(\w+)\./i),
  provider = match ? match[1] : undefined,
  result,
  createdUrl;
  if (match && provider && th.plugins[provider]) {
    result = th.plugins[provider].parse.call(this, url);
    if (result) {
      result.provider = th.plugins[provider].provider;
      return result;
    }
  }
  return undefined;
};
URLParser.prototype.bind = function(plugin) {
  var th = this;
  th.plugins[plugin.provider] = plugin;
  if (plugin.alternatives) {
    var i;
    for (i = 0; i < plugin.alternatives.length; i += 1) {
      th.plugins[plugin.alternatives[i]] = plugin;
    }
  }
};
URLParser.prototype.create = function(op) {
  var th = this,
  vi = op.videoInfo;
  op.format = op.format || 'short';
  if (th.plugins[vi.provider].create) {
    return th.plugins[vi.provider].create.call(this, op);
  }
  return undefined;
};

window.urlParser = new URLParser();

//parses strings like 1h30m20s to seconds
window.getTime = function(timeString) {
  "use strict";
  var totalSeconds = 0,
    timeValues = {
      's': 1,
      'm': 1 * 60,
      'h': 1 * 60 * 60,
      'd': 1 * 60 * 60 * 24,
      'w': 1 * 60 * 60 * 24 * 7
    },
    timePairs;
  //is the format 1h30m20s etc
  if (!timeString.match(/^(\d+[smhdw]?)+$/)) {
    return 0;
  }
  //expand to "1 h 30 m 20 s" and split
  timeString = timeString.replace(/([smhdw])/g, ' $1 ').trim();
  timePairs = timeString.split(' ');
  for (var i = 0; i < timePairs.length; i += 2) {
    totalSeconds += parseInt(timePairs[i], 10) * timeValues[timePairs[i + 1] || 's'];
  }
  return totalSeconds;
}
  //http://joquery.com/2012/string-format-for-javascript
if (typeof String.prototype.format !== 'function') {
  String.prototype.format = function() {
    // The string containing the format items (e.g. "{0}")
    // will and always has to be the first argument.
    var theString = this,
      i,
      regEx;

    // start with the second argument (i = 1)
    for (i = 0; i < arguments.length; i += 1) {
      // "gm" = RegEx options for Global search (more than one instance)
      // and for Multiline search
      regEx = new RegExp("\\{" + (i) + "\\}", "gm");
      theString = theString.replace(regEx, arguments[i]);
    }
    return theString;
  };
}
urlParser.bind({
  'provider': 'dailymotion',
  'alternatives': ['dai'],
  'parse': function(url) {
    "use strict";
    var match,
      id,
      startTime,
      result = {};

    match = url.match(/(?:\/video|ly)\/([A-Za-z0-9]+)/i);
    id = match ? match[1] : undefined;

    match = url.match(/[#\?&]start=([A-Za-z0-9]+)/i);
    startTime = match ? getTime(match[1]) : undefined;

    if (!id) {
      return undefined;
    }
    result.mediaType = 'video';
    result.id = id;
    if (startTime) {
      result.startTime = startTime;
    }
    return result;
  },
  'create': function(op) {
    "use strict";
    var vi = op.videoInfo;
    if (vi.startTime) {
      return 'https://www.dailymotion.com/video/{0}?start={1}'.format(vi.id, vi.startTime);
    }

    if (op.format === 'short') {
      return 'https://dai.ly/{0}'.format(vi.id);
    }

    return 'https://www.dailymotion.com/video/{0}'.format(vi.id);
  }
});

//not finished
urlParser.bind({
  'provider': 'livestream',
  'parse': function(url) {
    "use strict";
    var match,
      channel;
    match = url.match(/livestream\.com\/(\w+)/i);
    channel = match ? match[1] : undefined;
    if (!channel) {
      return undefined;
    }

    return {
      'mediaType': 'stream',
      'channel': channel
    };
  }
});
urlParser.bind({
  'provider': 'twitch',
  'parse': function(url) {
    "use strict";
    var match,
      id,
      channel,
      idPrefix,
      result = {};

    match = url.match(/twitch\.tv\/(\w+)(?:\/(.)\/(\d+))?/i);
    channel = match ? match[1] : undefined;
    idPrefix = match ? match[2] : undefined;
    id = match ? match[3] : undefined;

    match = url.match(/(?:\?channel|\&utm_content)=(\w+)/i);
    channel = match ? match[1] : channel;

    if (!channel) {
      return undefined;
    }
    if (id) {
      result.mediaType = 'video';
      result.id = id;
      result.idPrefix = idPrefix;
    } else {
      result.mediaType = 'stream';
    }
    result.channel = channel;

    return result;
  },
  'create': function(op) {
    "use strict";
    var url,
      vi = op.videoInfo;
    if (vi.mediaType === 'stream') {
      return 'https://twitch.tv/{0}'.format(vi.channel);
    }

    return 'https://twitch.tv/{0}/{1}/{2}'.format(vi.channel, vi.idPrefix, vi.id);
  }
});
urlParser.bind({
  'provider': 'vimeo',
  'alternatives': ['vimeopro'],
  'parse': function(url) {
    "use strict";
    var match,
      id;
    match = url.match(/(?:\/(?:channels\/[\w]+|(?:album\/\d+\/)?videos?))?\/(\d+)/i);
    id = match ? match[1] : undefined;
    if (!id) {
      return undefined;
    }
    return {
      'mediaType': 'video',
      'id': id
    };
  },
  'create': function(op) {
    "use strict";
    return 'https://vimeo.com/{0}'.format(op.videoInfo.id);
  }
});
urlParser.bind({
  'provider': 'youtube',
  'alternatives': ['youtu'],
  'parse': function(url) {
    "use strict";
    var match,
    id,
    playlistId,
    playlistIndex,
    startTime,
    result = {};

    match = url.match(/(?:(?:v|be|videos)\/|v=)([\w\-]{11})/i);
    id = match ? match[1] : undefined;

    match = url.match(/list=([\w\-]+)/i);
    playlistId = match ? match[1] : undefined;

    match = url.match(/index=(\d+)/i);
    playlistIndex = match ? Number(match[1]) : undefined;

    match = url.match(/[#\?&](?:star)?t=([A-Za-z0-9]+)/i);
    startTime = match ? getTime(match[1]) : undefined;

    if (id) {
      result.mediaType = 'video';
      result.id = id;
      if (playlistId) {
        result.playlistId = playlistId;
        if (playlistIndex) {
          result.playlistIndex = playlistIndex;
        }
      }
      if (startTime) {
        result.startTime = startTime;
      }
    } else if (playlistId) {
      result.mediaType = 'playlist';
      result.playlistId = playlistId;
    } else {
      return undefined;
    }

    return result;
  },
  'create': function(op) {
    "use strict";
    var url,
    vi = op.videoInfo;
    if (vi.mediaType === 'playlist') {
      return 'https://www.youtube.com/playlist?feature=share&list={0}'.format(vi.playlistId);
    }

    if (vi.playlistId) {
      url = 'https://www.youtube.com/watch?v={0}&list={1}'.format(vi.id, vi.playlistId);
      if (vi.playlistIndex) {
        url += '&index={0}'.format(vi.playlistIndex);
      }
    } else {
      if (op.format === 'short') {
        url = 'https://youtu.be/{0}'.format(vi.id);
      } else {
        url = 'https://www.youtube.com/watch?v={0}'.format(vi.id);
      }
    }

    if (vi.startTime) {
      url += '#t={0}'.format(vi.startTime);
    }
    return url;
  }
});