var px = (function() {

  var visualizations = [];

  var Slice = function(data, dashboard){
    var timer;
    var token = $('#' + data.token);
    var container_id = data.token + '_con';
    var selector = '#' + container_id;
    var container = $(selector);
    var slice_id = data.slice_id;
    var name = data['viz_name'];
    var dttm = 0;
    var timer;
    var stopwatch = function () {
        dttm += 10;
        $('#timer').text(Math.round(dttm/10)/100 + " sec");
    }
    slice = {
      jsonEndpoint: function() {
        // Shallow copy
        var form_data = jQuery.extend({}, data.form_data);
        for (var k in form_data){
          if (form_data[k]==null){
            delete form_data[k];
          }
        }
        form_data['json'] = true;
        if (dashboard !== undefined){
          for (var f in dashboard.filters) {
            if (slice_id !== f){
              form_data[dashboard.filters[f][0]] = dashboard.filters[f][1];
              form_data['flt_col_1'] = dashboard.filters[f][0];
              form_data['flt_op_1'] = 'in';
              form_data['flt_eq_1'] = dashboard.filters[f][1][0];
            }
          }
        }
        form_data['flt_op_0'] = '';
        form_data['flt_eq_0'] = '';
        form_data['flt_col_0'] = '';
        var parser = document.createElement('a');
        parser.href = data.json_endpoint;
        var endpoint = parser.pathname + '?' + $.param(form_data, true);
        return endpoint;
      },
      done: function (data) {
        clearInterval(timer);
        token.find("img.loading").hide()
        container.show();
        if(data !== undefined)
            $("#query_container").html(data.query);
        $('#timer').removeClass('btn-warning');
        $('span.query').removeClass('disabled');
        $('#timer').addClass('btn-success');
      },
      error: function (msg) {
        clearInterval(timer);
        token.find("img.loading").hide();
        var err = '<div class="alert alert-danger">' + msg  + '</div>';
        container.html(err);
        container.show();
        $('#timer').removeClass('btn-warning');
        $('span.query').removeClass('disabled');
        $('#timer').addClass('btn-danger');
      },
      data: data,
      container: container,
      container_id: container_id,
      selector: selector,
      render: function() {
        token.find("img.loading").show();
        container.hide();
        container.html('');
        timer = setInterval(stopwatch, 10);
        viz.render(this);
      },
      resize: function() {
        viz.resize(this);
      },
      addFilter: function(col, vals) {
        if(dashboard !== undefined)
          dashboard.addFilter(slice_id, col, vals);
      },
      clearFilter: function() {
        if(dashboard !== undefined)
          delete dashboard.clearFilter(slice_id);
      },
    };
    var viz = visualizations[name](slice);
    slice['viz'] = viz;
    return slice;
  }

  var Dashboard = function(){
    var dash = {
      slices: [],
      filters: {},
      addFilter: function(slice_id, field, values) {
        this.filters[slice_id] = [field, values];
        this.refreshExcept(slice_id);
      },
      refreshExcept: function(slice_id) {
        this.slices.forEach(function(slice){
          if(slice.data.slice_id != slice_id){
            slice.render();
          }
        });
      },
      clearFilter: function(slice_id) {
        delete this.filters[slice_id];
        this.refreshExcept(slice_id);
      },
    }
    $('.dashboard li.widget').each(function() {
      var data = $(this).data('slice');
      var slice = Slice(data, dash);
      $(this).find('a.refresh').click(function(){
        slice.render();
      });
      dash.slices.push(slice);
      slice.render();
    });
    return dash;
  }

  function registerViz(name, initViz) {
    visualizations[name] = initViz;
  }

  function initExploreView() {
    function getParam(name) {
      name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
      var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
      results = regex.exec(location.search);
      return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
  }

  $(".select2").select2({dropdownAutoWidth : true});
  $(".select2Sortable").select2();
  $(".select2Sortable").select2Sortable();
  $("form").show();
  $('[data-toggle="tooltip"]').tooltip({container: 'body'});

  function set_filters(){
    for (var i = 1; i < 10; i++){
      var eq = getParam("flt_eq_" + i);
      if (eq != ''){
        add_filter(i);
      }
    }
  }
  set_filters();

  function add_filter(i) {
    cp = $("#flt0").clone();
    $(cp).appendTo("#filters");
    $(cp).show();
    if (i != undefined){
      $(cp).find("#flt_eq_0").val(getParam("flt_eq_" + i));
      $(cp).find("#flt_op_0").val(getParam("flt_op_" + i));
      $(cp).find("#flt_col_0").val(getParam("flt_col_" + i));
    }
    $(cp).find('select').select2();
    $(cp).find('.remove').click(function() {
      $(this).parent().parent().remove();
    });
  }

  function druidify(){
    var i = 1;
    // Assigning the right id to form elements in filters
    $("#filters > div").each(function() {
      $(this).attr("id", function() {return "flt_" + i;})
      $(this).find("#flt_col_0")
        .attr("id", function() {return "flt_col_" + i;})
        .attr("name", function() {return "flt_col_" + i;});
      $(this).find("#flt_op_0")
        .attr("id", function() {return "flt_op_" + i;})
        .attr("name", function() {return "flt_op_" + i;});
      $(this).find("#flt_eq_0")
        .attr("id", function() {return "flt_eq_" + i;})
        .attr("name", function() {return "flt_eq_" + i;});
      i++;
    });
    $("#query").submit();
  }

  $("#plus").click(add_filter);
  $("#btn_save").click(function () {
    var slice_name = prompt("Name your slice!");
    if (slice_name != "" && slice_name != null) {
      $("#slice_name").val(slice_name);
      $("#action").val("save");
      druidify();
    }
  });
  $("#btn_overwrite").click(function () {
    var flag = confirm("Overwrite slice [" + $("#slice_name").val() + "] !?");
    if (flag) {
      $("#action").val("overwrite");
      druidify();
    }
  });
  add_filter();
  $(".druidify").click(druidify);

  function create_choices(term, data) {
    var filtered = $(data).filter(function() {
      return this.text.localeCompare(term) === 0;
    });
    if (filtered.length === 0) {
      return {id: term, text: term};
    }
  }
  function initSelectionToValue(element, callback) {
    callback({id: element.val(), text: element.val()});
  }
  function list_data(arr) {
    var obj = [];
    for (var i=0; i<arr.length; i++){
        obj.push({id: arr[i], text: arr[i]});
    }
    return obj;
  }
  $(".select2_freeform").each(function(){
    parent = $(this).parent();
    var name = $(this).attr('name');
    var l = [];
    var selected = '';
    for(var i=0; i<this.options.length; i++) {
        l.push({id: this.options[i].value, text: this.options[i].text});
        if(this.options[i].selected){
            selected = this.options[i].value;
        }
    }
    obj = parent.append(
        '<input class="' + $(this).attr('class') + '" name="'+ name +'" type="text" value="' + selected + '">');
    $("input[name='" + name  +"']")
      .select2({
        createSearchChoice: create_choices,
        initSelection: initSelectionToValue,
        multiple: false,
        data: l,
      });
    $(this).remove();
  });
}

function initDashboardView(dashboard_id) {
  var gridster = $(".gridster ul").gridster({
    widget_margins: [5, 5],
    widget_base_dimensions: [100, 100],
    draggable: {
      handle: '.drag',
    },
    resize: {
      enabled: true,
      stop: function(e, ui, element) {
        var slice = $(element).data('slice');
        slice.resize();
      }
    },
    serialize_params: function(_w, wgd) {
      return {
        slice_id: $(_w).attr('slice_id'),
        col: wgd.col,
        row: wgd.row,
        size_x: wgd.size_x,
        size_y: wgd.size_y
      };
    },
  }).data('gridster');
  $("div.gridster").css('visibility', 'visible');
  $("#savedash").click(function() {
    var data = {
        positions: gridster.serialize(),
        css: $("#dash_css").val()
    };
    $.ajax({
      type: "POST",
      url: '/panoramix/save_dash/' + dashboard_id + '/',
      data: {'data': JSON.stringify(data)},
      success: function() {alert("Saved!")},
      error: function() {alert("Error :(")},
    });
  });
  $("a.closeslice").click(function() {
    var li = $(this).parents("li");
    gridster.remove_widget(li);
  });
  $("table.slice_header").mouseover(function() {
    $(this).find("td.icons nobr").show();
  });
  $("table.slice_header").mouseout(function() {
    $(this).find("td.icons nobr").hide();
  });
  $("#dash_css").on("keyup", function(){
    css = $(this).val();
    $("#user_style").html(css);
  });

  // this sets the z-index for left side boxes higher
  $('li.slice').each(function() {
    current_row = $(this).attr('data-col');
    $( this ).css('z-index', 100 - current_row);
  });

  // this makes the whole chart fit within the dashboard div
  $("div.chart").each(function() {
    $(this).css('height', '95%');
  });


}

  // Export public functions
  return {
    registerViz: registerViz,
    Slice: Slice,
    Dashboard: Dashboard,
    initExploreView: initExploreView,
    initDashboardView: initDashboardView,
  }
})();