(function () {

  function addLocalMappings(buffer, maps) {
    maps.forEach(
      function (map) {
        let [cmd, action, extra] = map;
        let actionFunc = action;
        extra || (extra = {});

        if (typeof action == "string") {
          if (action.charAt(0) == ':')
            actionFunc = extra.open ? function () commandline.open("", action, modes.EX)
                                    : function () liberator.execute(action);
          else
            actionFunc = function () events.feedkeys(action, extra.noremap, true);
        }
        extra.matchingUrls = buffer;
        mappings.addUserMap(
          [modes.NORMAL],
          [cmd],
          "Local mapping for " + buffer,
          actionFunc,
          extra
        );
      }
    );
  }


  let (dl = function () AnkPixiv.downloadCurrentImage())
    addLocalMappings(
      /^http:\/\/www\.pixiv\.net\/member_illust\.php\?mode=medium\&illust_id=/,
      [
        ['z',           function () content.document.changeImageSize(), {}],
        ['<Leader>m',   'f\u4f5c\u8005\u3092\u975e\u516c\u958b',        {noremap: true}],
        ['<Leader>i',   'f\u7d75\u3092\u516c\u958b',                    {noremap: true}],
        [
          'p',
          function (count){
            if (count > 1)
              AnkPixiv.rate(count);
            else
              dl();
          },
          {count: true}
        ],
        ['>',           'f>'],
        ['<',           'f<'],
      ]
    );

  addLocalMappings(
    /^(http:\/\/(es|www).nicovideo.jp\/watch|http:\/\/(jp|www)\.youtube\.com\/watch|http:\/\/(www\.)?vimeo\.com\/(channels\/(hd)?#)?\d+)/,
    [
      ['<C-g>', ':pageinfo S',      ],
      ['i',     ':pageinfo S',      ],
      ['p',     ':stplay',          ],
      ['m',     ':stmute',          ],
      ['c',     ':stcomment',       ],
      ['z',     ':stlarge',         ],
      ['r',     ':strepeat',        ],
      ['+',     ':stvolume! 10',    ],
      ['-',     ':stvolume! -10',   ],
      ['h',     ':stseek! -10',     ],
      ['l',     ':stseek! 10',      ],
      ['k',     ':stvolume! 10',    ],
      ['j',     ':stvolume! -10',   ],
      ['s',     ':stseek ',         {open: true}],
      ['S',     ':stseek! ',        {open: true}],
      ['v',     ':stvolume ',       {open: true}],
      ['V',     ':stvolume! ',      {open: true}],
      ['o',     ':strelations ',    {open: true}],
      ['O',     ':strelations! ',   {open: true}],
    ]
  );

  addLocalMappings(
    /^https:\/\/mail\.google\.com\/mail\/#buzz/,
    [
      ['<C-r>', ':xhint o //span[contains(@class,"Fu aB Fv")]/parent::*/span[last()]']
    ]
  );

  addLocalMappings(
    /^http:\/\/www\.tumblr\.com\/(dashboard|tumblelog|show)/,
    [
      //['f',      ':xh t //*[@class="quote_source"]//a[not(@class="tumblr_blog")]|//*[@class="caption"]//a[not(@class="tumblr_blog")]<CR>']
    ]
  );

})();