/**
 * Check or uncheck checkboxes in formElem
 * If masterElem is false, toggle each box, otherwise use masterElem's status on all boxes
 * If elemSelector is false, act on all checkboxes in formElem
 */
function toggleChecks(formElem, masterElem, elemSelector) {
  elemSelector = elemSelector || 'input:checkbox';
  if (masterElem) {
    $('#' + formElem + ' ' + elemSelector).prop('checked', masterElem.checked);
  } else {
    $('#' + formElem + ' ' + elemSelector).each(function() {
      this.checked = !this.checked;
    })
  }
}

//Lightbox stuff

/*
 * If loading from a thumbnail, the lightbox is shown first with a "loading" screen
 * while the full size image loads, then the HTML of the lightbox is replaced with the image.
 */

var lightbox = {
  init: function (image, size) {
    if ($('#lightbox').length == 0 || $('#curtain').length == 0) {
      var lightboxEl = document.createElement('div')
      lightboxEl.id = 'lightbox'
      lightboxEl.className = 'lightbox hidden'
      var curtainEl = document.createElement('div')
      curtainEl.id = 'curtain'
      curtainEl.className = 'curtain hidden'
      $('#wrapper')[0].appendChild(lightboxEl)
      $('#wrapper')[0].appendChild(curtainEl)
    }
    if (typeof(image) == 'string') {
      $('#lightbox').gshow().listen('click', lightbox.unbox).raw().innerHTML =
        '<p size="7" style="color: gray; font-size: 50px;">Loading...<p>';
      $('#curtain').gshow().listen('click', lightbox.unbox);
      var src = image;
      image = new Image();
      image.onload = function() {
        lightbox.box_async(image);
      }
      image.src = src;
    }
    if (image.naturalWidth === undefined) {
      var tmp = document.createElement('img');
      tmp.style.visibility = 'hidden';
      tmp.src = image.src;
      image.naturalWidth = tmp.width;
      delete tmp;
    }
    if (image.naturalWidth > size) {
      lightbox.box(image);
    }
  },
  box: function (image) {
    var hasA = false;
    if (image.parentNode != null && image.parentNode.tagName.toUpperCase() == 'A') {
      hasA = true;
    }
    if (!hasA) {
      $('#lightbox').gshow().listen('click', lightbox.unbox).raw().innerHTML = '<img src="' + image.src + '" alt="" />';
      $('#curtain').gshow().listen('click', lightbox.unbox);
    }
  },
  box_async: function (image) {
    var hasA = false;
    if (image.parentNode != null && image.parentNode.tagName.toUpperCase() == 'A') {
      hasA = true;
    }
    if (!hasA) {
      $('#lightbox').raw().innerHTML = '<img src="' + image.src + '" alt="" />';
    }
  },
  unbox: function (data) {
    $('#curtain').ghide();
    $('#lightbox').ghide().raw().innerHTML = '';
  }
};

// Horrible hack to let arrow keys work as forward/back in lightbox
window.onkeydown = function(e) {
  e = e || window.event
  if (e.keyCode == 37 || e.keyCode == 39) {
    if ($('#lightbox') && !$('#lightbox').raw().classList.contains('hidden')) {
      ($('[id!="lightbox"] > [src="'+$('#lightbox > img').raw().src+'"]').raw()[((e.keyCode==39)?'next':'previous')+'Sibling'].onclick||function(){})()
    }
  }
}

/* Still some issues
function caps_check(e) {
  if (e === undefined) {
    e = window.event;
  }
  if (e.which === undefined) {
    e.which = e.keyCode;
  }
  if (e.which > 47 && e.which < 58) {
    return;
  }
  if ((e.which > 64 && e.which < 91 && !e.shiftKey) || (e.which > 96 && e.which < 123 && e.shiftKey)) {
    $('#capslock').gshow();
  }
}
*/

function hexify(str) {
  str = str.replace(/rgb\(|\)/g, "").split(",");
  str[0] = parseInt(str[0], 10).toString(16).toLowerCase();
  str[1] = parseInt(str[1], 10).toString(16).toLowerCase();
  str[2] = parseInt(str[2], 10).toString(16).toLowerCase();
  str[0] = (str[0].length == 1) ? '0' + str[0] : str[0];
  str[1] = (str[1].length == 1) ? '0' + str[1] : str[1];
  str[2] = (str[2].length == 1) ? '0' + str[2] : str[2];
  return (str.join(""));
}

function resize(id) {
  var textarea = document.getElementById(id);
  if (textarea.scrollHeight > textarea.clientHeight) {
    //textarea.style.overflowY = 'hidden';
    textarea.style.height = Math.min(1000, textarea.scrollHeight + textarea.style.fontSize) + 'px';
  }
}

//ZIP downloader stuff
function add_selection() {
  var selected = $('#formats').raw().options[$('#formats').raw().selectedIndex];
  if (selected.disabled === false) {
    var listitem = document.createElement("li");
    listitem.id = 'list' + selected.value;
    listitem.innerHTML = '            <input type="hidden" name="list[]" value="' + selected.value + '" /> ' +
'            <span style="float: left;">' + selected.innerHTML + '</span>' +
'            <a href="#" onclick="remove_selection(\'' + selected.value + '\'); return false;" style="float: right;" class="brackets">X</a>' +
'            <br style="clear: all;" />';
    $('#list').raw().appendChild(listitem);
    $('#opt' + selected.value).raw().disabled = true;
  }
}

function remove_selection(index) {
  $('#list' + index).remove();
  $('#opt' + index).raw().disabled = '';
}

// Thank you http://stackoverflow.com/questions/4578398/selecting-all-text-within-a-div-on-a-single-left-click-with-javascript
function select_all(el) {
  if (typeof window.getSelection != "undefined" && typeof document.createRange != "undefined") {
    var range = document.createRange();
    range.selectNodeContents(el);
    var sel = window.getSelection();
    sel.removeAllRanges();
    sel.addRange(range);
  } else if (typeof document.selection != "undefined" && typeof document.body.createTextRange != "undefined") {
    var textRange = document.body.createTextRange();
    textRange.moveToElementText(el);
    textRange.select();
  }
}

function toggle_header_links(event) {
  event.stopPropagation()
  $('#userinfo_minor > li > ul').raw().style.display = ($('#userinfo_minor > li > ul').raw().style.display == 'block') ? 'none' : 'block'
}
function hide_header_links() {
  $('#userinfo_minor > li > ul').raw().style.display = 'none'
}

function preload(image) {
  var img = document.createElement('img')
  img.style.display = 'none'
  img.src = image
  document.body.appendChild(img)
  document.body.removeChild(img)
}

function getCover(event) {
  image = event.target.attributes.cover.value
  $('#coverCont img').remove()
  var coverCont = ($('#coverCont').length==0)?document.body.appendChild(document.createElement('div')):$('#coverCont')[0]
  coverCont.id = 'coverCont'
  if ($('#coverCont img').length == 0) {
    coverCont.appendChild(document.createElement('img'))
  }
  $('#coverCont img')[0].src = image?image:'/static/common/noartwork/comedy.png'
  coverCont.className = (event.clientX > (window.innerWidth/2)) ? 'left' : 'right'
  coverCont.style.display = 'block'
  //Preload next image
  if ($('.torrent_table, .request_table').length > 0) {
    var as = $('[cover]')
    var a = event.target
    preload((as[as.toArray().indexOf(a)+1]||as[0]).attributes.cover.value)
    preload((as[as.toArray().indexOf(a)-1]||as[0]).attributes.cover.value)
  }
}
function ungetCover(event) {
  $('#coverCont img').remove()
  coverCont.style.display = 'none'
}

$(function() {
  if ($('#header_links_menu').length > 0) {
    $('#header_links_menu')[0].addEventListener('click', toggle_header_links)
    $('body')[0].addEventListener('click', hide_header_links)
  }
  if ($('.request_table').length > 0) {
    var a = $('[cover]')[0]
    if (a) preload(a.attributes.cover.value)
  }

  document.querySelectorAll('[toggle-target]').forEach(function(el) {
    el.addEventListener('click', function(event) {
      $(el.attributes['toggle-target'].value).gtoggle()
      if (el.attributes['toggle-replace']) {
        [el.innerHTML, el.attributes['toggle-replace'].value] = [el.attributes['toggle-replace'].value, el.innerHTML]
      }
    })
  })

  document.querySelectorAll('.lightbox-init').forEach(function(el) {
    el.addEventListener('click', function(event) {
      lightbox.init(el.attributes['lightbox-img']||el.src, el.attributes['lightbox-size']||el.width)
    })
  })
})