var JQVMap = function (params) {
  params = params || {};
  var map = this;
  var mapData = JQVMap.maps[params.map];
  var mapPins;

  if( !mapData){
    throw new Error('Invalid "' + params.map + '" map parameter. Please make sure you have loaded this map file in your HTML.');
  }

  this.selectedRegions = [];
  this.multiSelectRegion = params.multiSelectRegion;

  this.container = params.container;

  this.defaultWidth = mapData.width;
  this.defaultHeight = mapData.height;

  this.color = params.color;
  this.selectedColor = params.selectedColor;
  this.hoverColor = params.hoverColor;
  this.hoverColors = params.hoverColors;
  this.hoverOpacity = params.hoverOpacity;
  this.setBackgroundColor(params.backgroundColor);

  this.width = params.container.width();
  this.height = params.container.height();

  this.resize();

  jQuery(window).resize(function () {
    var newWidth = params.container.width();
    var newHeight = params.container.height();

    if(newWidth && newHeight){
      map.width = newWidth;
      map.height = newHeight;
      map.resize();
      map.canvas.setSize(map.width, map.height);
      map.applyTransform();

      var resizeEvent = jQuery.Event('resize.jqvmap');
      jQuery(params.container).trigger(resizeEvent, [newWidth, newHeight]);

      if(mapPins){
        jQuery('.jqvmap-pin').remove();
        map.pinHandlers = false;
        map.placePins(mapPins.pins, mapPins.mode);
      }
    }
  });

  this.canvas = new VectorCanvas(this.width, this.height, params);
  params.container.append(this.canvas.canvas);

  this.rootGroup = this.canvas.createGroup(true);

  this.index = JQVMap.mapIndex;
  this.label = jQuery('<div/>').addClass('jqvmap-label').appendTo(jQuery('body')).hide();

  if (params.enableZoom) {
    jQuery('<div/>').addClass('jqvmap-zoomin').text('+').appendTo(params.container);
    jQuery('<div/>').addClass('jqvmap-zoomout').html('&#x2212;').appendTo(params.container);
    
    this.makeDraggable();
  }

  map.countries = [];

  for (var key in mapData.paths) {
    var path = this.canvas.createPath({
      path: mapData.paths[key].path
    });

    path.setFill(this.color);
    path.id = map.getCountryId(key);
    map.countries[key] = path;

    if (this.canvas.mode === 'svg') {
      path.setAttribute('class', 'jqvmap-region');
    } else {
      jQuery(path).addClass('jqvmap-region');
    }

    jQuery(this.rootGroup).append(path);
  }

  jQuery(params.container).delegate(this.canvas.mode === 'svg' ? 'path' : 'shape', 'mouseover mouseout', function (e) {
    var containerPath = e.target,
      code = e.target.id.split('_').pop(),
      labelShowEvent = jQuery.Event('labelShow.jqvmap'),
      regionMouseOverEvent = jQuery.Event('regionMouseOver.jqvmap');

    code = code.toLowerCase();

    if (e.type === 'mouseover') {
      jQuery(params.container).trigger(regionMouseOverEvent, [code, mapData.paths[code].name]);
      if (!regionMouseOverEvent.isDefaultPrevented()) {
        map.highlight(code, containerPath);
      }
      if (params.showTooltip) {
        map.label.text(mapData.paths[code].name);
        jQuery(params.container).trigger(labelShowEvent, [map.label, code]);

        if (!labelShowEvent.isDefaultPrevented()) {
          map.label.show();
          map.labelWidth = map.label.width();
          map.labelHeight = map.label.height();
        }
      }
    } else {
      map.unhighlight(code, containerPath);

      map.label.hide();
      jQuery(params.container).trigger('regionMouseOut.jqvmap', [code, mapData.paths[code].name]);
    }
  });

  jQuery(params.container).delegate(this.canvas.mode === 'svg' ? 'path' : 'shape', 'click', function (regionClickEvent) {

    var targetPath = regionClickEvent.target;
    var code = regionClickEvent.target.id.split('_').pop();
    var mapClickEvent = jQuery.Event('regionClick.jqvmap');

    code = code.toLowerCase();

    jQuery(params.container).trigger(mapClickEvent, [code, mapData.paths[code].name]);

    if ( !params.multiSelectRegion && !mapClickEvent.isDefaultPrevented()) {
      for (var keyPath in mapData.paths) {
        map.countries[keyPath].currentFillColor = map.countries[keyPath].getOriginalFill();
        map.countries[keyPath].setFill(map.countries[keyPath].getOriginalFill());
      }
    }

    if ( !mapClickEvent.isDefaultPrevented()) {
      if (map.isSelected(code)) {
        map.deselect(code, targetPath);
      } else {
        map.select(code, targetPath);
      }
    }
  });

  if (params.showTooltip) {
    params.container.mousemove(function (e) {
      if (map.label.is(':visible')) {
        var left = e.pageX - 15 - map.labelWidth;
        var top = e.pageY - 15 - map.labelHeight;

        if(left < 0) {
          left = e.pageX + 15;
        }
        if(top < 0) {
          top = e.pageY + 15;
        }

        map.label.css({
          left: left,
          top: top
        });
      }
    });
  }

  this.setColors(params.colors);

  this.canvas.canvas.appendChild(this.rootGroup);

  this.applyTransform();

  this.colorScale = new ColorScale(params.scaleColors, params.normalizeFunction, params.valueMin, params.valueMax);

  if (params.values) {
    this.values = params.values;
    this.setValues(params.values);
  }

  if (params.selectedRegions) {
    if (params.selectedRegions instanceof Array) {
      for(var k in params.selectedRegions) {
        this.select(params.selectedRegions[k].toLowerCase());
      }
    } else {
      this.select(params.selectedRegions.toLowerCase());
    }
  }

  this.bindZoomButtons();

  if(params.pins) {
    mapPins = {
      pins: params.pins,
      mode: params.pinMode
    };

    this.pinHandlers = false;
    this.placePins(params.pins, params.pinMode);
  }

  if(params.showLabels){
    this.pinHandlers = false;

    var pins = {};
    for (key in map.countries){
      if (typeof map.countries[key] !== 'function') {
        if( !params.pins || !params.pins[key] ){
          pins[key] = key.toUpperCase();
        }
      }
    }

    mapPins = {
      pins: pins,
      mode: 'content'
    };

    this.placePins(pins, 'content');
  }

  JQVMap.mapIndex++;
};

JQVMap.prototype = {
  transX: 0,
  transY: 0,
  scale: 1,
  baseTransX: 0,
  baseTransY: 0,
  baseScale: 1,
  width: 0,
  height: 0,
  countries: {},
  countriesColors: {},
  countriesData: {},
  zoomStep: 1.4,
  zoomMaxStep: 4,
  zoomCurStep: 1
};

JQVMap.xlink = 'http://www.w3.org/1999/xlink';
JQVMap.mapIndex = 1;
JQVMap.maps = {};
