define('views/Script', function (require, _exports, module) {
  var store = require('utils').store;
  var cache = require('cache');
  var DEFAULT_ICON = '/images/icon48.png';

  module.exports = {
    props: ['script'],
    template: cache.get('/options/components/script.html'),
    data: function () {
      return {
        safeIcon: DEFAULT_ICON,
      };
    },
    computed: {
      canUpdate: function () {
        var script = this.script;
        return script.update && (
          script.custom.updateURL ||
          script.meta.updateURL ||
          script.custom.downloadURL ||
          script.meta.downloadURL ||
          script.custom.lastInstallURL
        );
      },
      homepageURL: function () {
        var script = this.script;
        return script.custom.homepageURL || script.meta.homepageURL || script.meta.homepage;
      },
      author: function () {
        var text = this.script.meta.author;
        if (!text) return;
        var matches = text.match(/^(.*?)\s<(\S*?@\S*?)>$/);
        return {
          email: matches && matches[2],
          name: matches ? matches[1] : text,
        };
      },
      labelEnable: function () {
        return this.script.enabled ? _.i18n('buttonDisable') : _.i18n('buttonEnable');
      },
    },
    ready: function () {
      var _this = this;
      _this.$el.addEventListener('dragstart', _this.onDragStart.bind(_this), false);
      var icon = _this.script.meta.icon;
      if (icon && icon !== _this.safeIcon) {
        _this.loadImage(icon)
        .then(function (url) {
          _this.safeIcon = url;
        }, function () {
          _this.safeIcon = DEFAULT_ICON;
        });
      }
    },
    methods: {
      getLocaleString: function (key) {
        return _.getLocaleString(this.script.meta, key);
      },
      loadImage: function () {
        var images = {};
        return function (url) {
          if (!url) return Promise.reject();
          var promise = images[url];
          if (!promise) {
            var cache = store.cache[url];
            promise = cache ? Promise.resolve(cache)
            : new Promise(function (resolve, reject) {
              var img = new Image;
              img.onload = function () {
                resolve(url);
              };
              img.onerror = function () {
                reject(url);
              };
              img.src = url;
            });
            images[url] = promise;
          }
          return promise;
        };
      }(),
      onEdit: function () {
        var _this = this;
        _this.$dispatch('EditScript', _this.script.id);
      },
      onRemove: function () {
        var _this = this;
        _.sendMessage({
          cmd: 'RemoveScript',
          data: _this.script.id,
        });
      },
      onEnable: function () {
        var _this = this;
        _.sendMessage({
          cmd: 'UpdateScriptInfo',
          data: {
            id: _this.script.id,
            enabled: _this.script.enabled ? 0 : 1,
          },
        });
      },
      onUpdate: function () {
        _.sendMessage({
          cmd: 'CheckUpdate',
          data: this.script.id,
        });
      },
      onDragStart: function (e) {
        var _this = this;
        new DND(e, function (data) {
          _this.$dispatch('MoveScript', data);
        });
      },
    },
  };

  function DND(e, cb) {
    var _this = this;
    _this.mousemove = _this.mousemove.bind(_this);
    _this.mouseup = _this.mouseup.bind(_this);
    if (e) {
      e.preventDefault();
      _this.start(e);
    }
    _this.onDrop = cb;
  }
  DND.prototype.start = function (e) {
    var _this = this;
    var dragging = _this.dragging = {};
    var el = dragging.el = e.currentTarget;
    var parent = el.parentNode;
    var rect = el.getBoundingClientRect();
    dragging.offset = {
      x: e.clientX - rect.left,
      y: e.clientY - rect.top,
    };
    var next = el.nextElementSibling;
    dragging.delta = (next ? next.getBoundingClientRect().top : parent.offsetHeight) - rect.top;
    dragging.lastIndex = dragging.index = [].indexOf.call(parent.children, el);
    dragging.elements = [].filter.call(parent.children, function (el) {
      return el !== dragging.el;
    });
    var dragged = dragging.dragged = el.cloneNode(true);
    dragged.classList.add('dragging');
    dragged.style.left = rect.left + 'px';
    dragged.style.top = rect.top + 'px';
    dragged.style.width = rect.width + 'px';
    parent.appendChild(dragged);
    el.classList.add('dragging-placeholder');
    document.addEventListener('mousemove', _this.mousemove, false);
    document.addEventListener('mouseup', _this.mouseup, false);
  };
  DND.prototype.mousemove = function (e) {
    var _this = this;
    var dragging = _this.dragging;
    var dragged = dragging.dragged;
    dragged.style.left = e.clientX - dragging.offset.x + 'px';
    dragged.style.top = e.clientY - dragging.offset.y + 'px';
    var hoveredIndex = dragging.elements.findIndex(function (el) {
      if (!el) return;
      if (el.classList.contains('dragging-moving')) return;
      var rect = el.getBoundingClientRect();
      var pad = 10;
      return (
        e.clientX >= rect.left + pad
        && e.clientX <= rect.left + rect.width - pad
        && e.clientY >= rect.top + pad
        && e.clientY <= rect.top + rect.height - pad
      );
    });
    if (~hoveredIndex) {
      var hoveredEl = dragging.elements[hoveredIndex];
      var lastIndex = dragging.lastIndex;
      var isDown = hoveredIndex >= lastIndex;
      var el = dragging.el;
      var delta = dragging.delta;
      if (isDown) {
        hoveredIndex ++;
        hoveredEl.parentNode.insertBefore(el, hoveredEl.nextElementSibling);
      } else {
        delta = -delta;
        hoveredEl.parentNode.insertBefore(el, hoveredEl);
      }
      dragging.lastIndex = hoveredIndex;
      _this.animate(dragging.elements.slice(
        isDown ? lastIndex : hoveredIndex,
        isDown ? hoveredIndex : lastIndex
      ), delta);
    }
    _this.checkScroll(e.clientY);
  };
  DND.prototype.animate = function (elements, delta) {
    function endAnimation(e) {
      e.target.classList.remove('dragging-moving');
      e.target.removeEventListener('transitionend', endAnimation, false);
    }
    elements.forEach(function (el) {
      if (!el) return;
      el.classList.add('dragging-moving');
      el.style.transition = 'none';
      el.style.transform = 'translateY(' + delta + 'px)';
      el.addEventListener('transitionend', endAnimation, false);
      setTimeout(function () {
        el.style.transition = '';
        el.style.transform = '';
      });
    });
  };
  DND.prototype.mouseup = function () {
    var _this = this;
    document.removeEventListener('mousemove', _this.mousemove, false);
    document.removeEventListener('mouseup', _this.mouseup, false);
    var dragging = _this.dragging;
    dragging.dragged.remove();
    dragging.el.classList.remove('dragging-placeholder');
    _this.dragging = null;
    _this.onDrop && _this.onDrop({
      from: dragging.index,
      to: dragging.lastIndex,
    });
  };
  DND.prototype.checkScroll = function (y) {
    var dragging = this.dragging;
    var scrollThreshold = 10;
    dragging.scroll = 0;
    var offset = dragging.el.parentNode.getBoundingClientRect();
    var delta = (y - (offset.bottom - scrollThreshold)) / scrollThreshold;
    if (delta > 0) {
      dragging.scroll = 1 + Math.min(~~ (delta * 5), 10);
    } else {
      delta = (offset.top + scrollThreshold - y) / scrollThreshold;
      if (delta > 0) dragging.scroll = -1 - Math.min(~~ (delta * 5), 10);
    }
    if (dragging.scroll) this.scrollParent();
  };
  DND.prototype.scrollParent = function () {
    function scroll() {
      var dragging = _this.dragging;
      if (dragging) {
        if (dragging.scroll) {
          dragging.el.parentNode.scrollTop += dragging.scroll;
          setTimeout(scroll, 32);
        } else dragging.scrolling = false;
      }
    }
    var _this = this;
    if (!_this.dragging.scrolling) {
      _this.dragging.scrolling = true;
      scroll();
    }
  };
});