/**
 * creates a sankey chart in the sidebar 
 * monitors for data changes and replots if there are any
 * details at http://ramblings.mcpher.com/Home/excelquirks/addons/sankeyaddon
 */
var Sankey = (function(sankey) {
    'use strict';
    
    
    /**
    * draw a sankey
    * @param {object} sets the chart settings
    * @param {string[]} headers
    * @param {[[string,string,number]]} data
    * @param {element} chartElem where to put it
    * @param {boolean} clear whether to clear current chart.
    */
    sankey.drawChart = function (sets,headers, data, chartElem,clear) {
      
      // clone the settings
      var settings = Utils.clone (sets);
      
      if(clear) {
        chartElem.innerHTML = "";
      }
      
      // this might fail since we could pick up the data at any point - but that's ok
      try {
        
        // dont let the from and to field be the same
        if (headers[0] === headers[1]) return;

        // assuming the data is all clean here
        var dataTable = new google.visualization.DataTable();
        
        dataTable.addColumn ('string' , headers[0]);
        dataTable.addColumn ('string' , headers[1]);	
        dataTable.addColumn ('number' , headers[2]);
        dataTable.addColumn({type: 'string', role: 'tooltip'});
        // assign data - be lenient with mismatched data types
        dataTable.addRows(data.map(function(d) {
          return [d[0].toString(), d[1].toString() , parseInt (d[2],10) ,  d[0] + ">" + d[1] + "(" + d[2] + ")"];
        }).filter(function(d){
          // get rid of blank rows (0 volumes will not be plotted either)
          return d[0] && d[1] && !isNaN(d[2]) && d[2];
        }));
        
        
        // Instantiate and draw our chart, passing in some options.
        var chart = new google.visualization.Sankey(chartElem);
        chart.draw(dataTable, settings);
      }
      catch (err) {
        // no need -  probably just means the line is not complete yet
      }
    };
    
    sankey.doElementer = function (setup) {
      
      return new Elementer()
      .setMain('')
      .setContainer('elementer-content')
      .setRoot('elementer-root')
      .setLayout(setup.layout)
      .setDetail(setup.detail)
      .build();
      
    };
    
    
    sankey.mapSettings = function (arger) {
      
      var ec = arger.getElements().controls;
      
      return {
        height: parseInt(ec.previewHeight.value, 10),
        width: parseInt(ec.previewWidth.value, 10),
        scale: {
          width: parseFloat(ec.scaleWidth.value),
          height: parseFloat(ec.scaleHeight.value),
          font: parseFloat(ec.scaleFont.value)
        },
        options:{
          
          height:parseInt(ec.previewHeight.value, 10),
          width:parseInt(ec.previewWidth.value, 10),
          
          tooltip:{
            textStyle:{
              fontName: ec.tooltipFontName.value,
              fontSize: parseInt(ec.tooltipFontSize.value, 10),
              color: ec.tooltipFontColor.value,
              bold: ec.tooltipFontBold.checked,
              italic: ec.tooltipFontItalic.checked
            },
            isHtml:false
          },    
          
          sankey: {
            link: {
              colorMode:ec.linkColorMode.value,
              color: {
                fill: ec.linkFillColor.value, // Color of the link.
                fillOpacity: parseFloat(ec.linkOpacity.value), // Transparency of the link.
                stroke: ec.linkBorderColor.value, // Color of the link border.
                strokeWidth: parseInt(ec.linkBorderWidth.value, 10) // Thickness of the link border 
              }
            },
            
            node: {
              label: {
                fontName: ec.labelFontName.value,
                fontSize: parseInt(ec.labelFontSize.value, 10),
                color: ec.labelFontColor.value,
                bold: ec.labelFontBold.checked,
                italic: ec.labelFontItalic.checked
              },
              labelPadding: parseInt(ec.labelPadding.value, 10), // Horizontal distance between the lab
              nodePadding: parseInt(ec.nodePadding.value, 10), // Vertical distance between nodes.
              width: parseInt(ec.nodeWidth.value, 10) // Thickness of the node.
            }
          }
        }
      };
      
      
      
    };
    
    sankey.setup = function() {
      return {
        detail: {
          sourceDivider: {
            template: "dividerTemplate",
            label: "Source data"
          },
          filterDivider: {
            template: "dividerTemplate",
            label: "Filtering"
          },
          columnDivider: {
            template: "dividerTemplate",
            label: "Columns"
          },
          
          embedDivider: {
            template: "dividerTemplate",
            label:"Image embed code"
          },
          
          manageDivider: {
            template: "dividerTemplate",
            label:"Manage settings"
          },
          
          useStandard: {
            template: "radioTemplate",
            label: "Standard",
            icon: "tuner",
            properties:{
              name:"use-group"
            },
            values:{
              resetable:false
            }
          },
          useDocument: {
            template: "radioTemplate",
            label: "This document's settings",
            icon: "playlist_play",
            properties:{
              name:"use-group"
            },
            values:{
              resetable:false
            }
          },
          useUser: {
            template: "radioTemplate",
            label: "My personal settings",
            icon: "fingerprint",
            properties:{
              name:"use-group"
            },
            values:{
              resetable:false
            }
          },
          
          useInitial: {
            template: "radioTemplate",
            label: "Reset to initial",
            icon: "undo",
            properties:{
              name:"use-group"
            },
            values:{
              value:true,
              resetable:false
            }
          },
          
          makePermanent: {
            template: "radioTemplate",
            label: "Save for future use in this document",
            icon: "playlist_add_check",
            properties:{
              name:"manage-group"
            },
            values:{
              resetable:false,
              value:true
            }
          },
          
          makeDefault: {
            template: "radioTemplate",
            label: "Save for future use in all my documents",
            icon: "playlist_add",
            properties:{
              name:"manage-group"
            },
            values:{
              resetable:false
            }
          },
          
          clearPermanent: {
            template: "radioTemplate",
            label: "Clear saved settings in this document",
            icon: "settings_backup_restore",
            properties:{
              name:"manage-group"
            },
            values:{
              resetable:false
            }
          },
          
          clearDefault: {
            template: "radioTemplate",
            label: "Clear all my saved default settings",
            icon: "layers_clear",
            properties:{
              name:"manage-group"
            },
            values:{
              resetable:false
            }
          },
          
          manageButton:{
            template:"buttonTemplate",
            classes: {
              element:"action"
            },
            values:{
              value:"SAVE"
            }
          },
        
          
          resetButton_dataSettings:{
            template:"resetButtonTemplate"
          }, 

          
          resetButton_embedCode:{
            template:"resetButtonTemplate",
            custom:{
              cancelOnly:true
            }
          }, 
          
          resetButton_arrangePreview:{
            template:"resetButtonTemplate"
          },
          
          resetButton_links:{
            template:"resetButtonTemplate"
          },
          
          resetButton_nodes:{
            template:"resetButtonTemplate"
          },
          
          resetButton_tooltips:{
            template:"resetButtonTemplate"
          },
          
          resetButton_scaleRatio:{
            template:"resetButtonTemplate"
          }, 
          
          applyButton:{
            template:"buttonTemplate",
            classes:{
              element:"action"
            },
            values:{
              value:"APPLY"
            },
          },
  
          wholeSheet: {
            template: "radioTemplate",
            label: "Whole sheet",
            icon: "grid_on",
            values: {
              value: true,
              resetable:true
            },
            properties:{
              name:"range-group"
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_dataSettings.disabled = false;
              }
            }
          },
          
          selectedRange: {
            template: "radioTemplate",
            label: "Selected range",
            icon: "domain",
            properties:{
              name:"range-group"
            },
            values:{
              resetable:true
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_dataSettings.disabled = false;
              }
            }
          },
          
          fromColumn: {
            template: "selectTemplate",
            label: "Source column",
            icon: "skip_previous",
            values:{
              resetable:true
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_dataSettings.disabled = false;
              }
            }
          },
          
          toColumn: {
            template: "selectTemplate",
            label: "Target column",
            icon: "skip_next",
            values:{
              resetable:true
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_dataSettings.disabled = false;
              }
            }
          },
          
          weightColumn: {
            template: "selectTemplate",
            label: "Weight column",
            icon: "network_check",
            values:{
              resetable:true
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_dataSettings.disabled = false;
              }
            }
          },
          
          applyFilters: {
            template: "checkboxTemplate",
            label: "Respect filters in data",
            icon: "filter_list",
            values:{
              resetable:true
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_dataSettings.disabled = false;
              }
            }
          },
          
          previewWidth: {
            template: "numberTemplate",
            label: "Width",
            icon: "crop_landscape",
            properties:{
              max:600
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_arrangePreview.disabled = false;
              }
            }
            
          },
          
          previewHeight: {
            template: "numberTemplate",
            label: "Height",
            icon: "crop_portrait",
            properties:{
              max:600
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_arrangePreview.disabled = false;
              }
            }
          },
          
          scaleWidth: {
            template: "numberTemplate",
            label: "Width of embedded chart",
            icon: "picture_in_picture_alt",
            properties: {
              max: 1200,
              min: 100,
              step: 1
            },
            values:{
              value:600
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_scaleRatio.disabled = false;
              }
            }
          },
          scaleHeight: {
            template: "numberTemplate",
            label: "Height of embedded chart",
            icon: "picture_in_picture",
            properties: {
              max: 1200,
              min: 100,
              step: 1
            },
            values:{
              value:400
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_scaleRatio.disabled = false;
              }
            }
          },
          scaleFont: {
            template: "numberTemplate",
            label: "Font size of embedded chart",
            icon: "format_size",
            properties: {
              max: 32,
              min: 6,
              step: 1
            },
            values:{
              value:12
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_scaleRatio.disabled = false;
              }
            }
          },
          
          nodePadding: {
            template: "numberTemplate",
            label: "Vertical spacing between nodes",
            icon: "vertical_align_bottom",
            properties: {
              max: 20,
              min: 0
            },
            values:{
              value:10
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_nodes.disabled = false;
              }
            }
          },
          nodeWidth: {
            template: "numberTemplate",
            label: "Thickness of node",
            icon: "flip",
            properties: {
              max: 20,
              min: 0
            },
            values:{
              value:5
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_nodes.disabled = false;
              }
            }
          },
          tooltipFontSize: {
            template: "numberTemplate",
            label: "Font size",
            icon: "format_size",
            properties: {
              min: 6,
              max: 20
            },
            values:{
              value:10
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_tooltips.disabled = false;
              }
            }
          },
          tooltipFontName: {
            template: "textTemplate",
            label: "Font name",
            icon: "text_fields",
            values: {
              value: "Roboto"
            },
            styles:{
              element:"width:80px;"
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_tooltips.disabled = false;
              }
            }
          },
          tooltipFontColor: {
            template: "textTemplate",
            label: "Font color",
            icon: "format_color_text",
            properties: {
              type: "color"
            },
            values:{
              value:"#212121"
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_tooltips.disabled = false;
              }
            }
          },
          tooltipFontBold: {
            template: "checkboxTemplate",
            label: "Bold",
            icon: "format_bold",
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_tooltips.disabled = false;
              }
            }
          },
          tooltipFontItalic: {
            template: "checkboxTemplate",
            label: "Italic",
            icon: "format_italic",
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_tooltips.disabled = false;
              }
            }
          },
          
          linkColorMode:{
            template:"selectTemplate",
            label:"Color mode",
            icon:"gradient",
            options:["none","source","target","gradient"],
            values:{
              value:"none"
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_links.disabled = false;
              }
            }
          },
          linkFillColor: {
            template: "textTemplate",
            label: "Background color",
            icon: "format_color_fill",
            properties: {
              type: "color",
              value: '#eeeeee'
            },
            values:{
              value:'#eeeeee'
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_links.disabled = false;
              }
            }
          },
          linkBorderWidth: {
            template: "numberTemplate",
            label: "Border width",
            icon: "line_weight",
            properties: {
              max: 5,
              min: 0
            },
            values:{
              value:0
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_links.disabled = false;
              }
            }
          },
          linkBorderColor: {
            template: "textTemplate",
            label: "Border color",
            icon: "border_color",
            properties: {
              type: "color"
            },
            values:{
              value:'#212121'
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_links.disabled = false;
              }
            }
          },
          linkOpacity: {
            template: "numberTemplate",
            label: "Opacity",
            icon: "opacity",
            properties: {
              min: 0,
              max: 1,
              step: 0.1
            },
            values:{
              value:0.4
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_links.disabled = false;
              }
            }
          },
          labelDivider: {
            template: "dividerTemplate",
            label: "Labels"
          },
          labelPadding: {
            template: "numberTemplate",
            label: "Label padding",
            icon: "format_indent_increase",
            properties: {
              max: 20,
              min: 0,
              value: 6
            },
            values:{
              value:6
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_nodes.disabled = false;
              }
            }
          },
          labelFontSize: {
            template: "numberTemplate",
            label: "Font size",
            icon: "format_size",
            properties: {
              min: 4,
              max: 24
            },
            values:{
              value:10
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_nodes.disabled = false;
              }
            }
          },
          labelFontName: {
            template: "textTemplate",
            label: "Font name",
            icon: "text_fields",
            values: {
              value: "Roboto"
            },
            styles:{
              element:"width:80px;"
            }
          },
          labelFontColor: {
            template: "textTemplate",
            label: "Font color",
            icon: "format_color_text",
            properties: {
              type: "color"
            },
            values:{
              value:'#212121'
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_nodes.disabled = false;
              }
            }
          },
          labelFontBold: {
            template: "checkboxTemplate",
            label: "Bold",
            values:{
              value:false
            },
            icon: "format_bold",
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_nodes.disabled = false;
              }
            }
          },
          labelFontItalic: {
            template: "checkboxTemplate",
            label: "Italic",
            icon: "format_italic",
            values:{
              value:false
            },
            on: {
              change: function (elementer, branch , ob,e) {
                elementer.getElements().controls.resetButton_nodes.disabled = false;
              }
            }
          },
          svgLabel: {
            template:"contentTemplate",
            label: "Copy embeddable SVG code below",
            styles:{
              tdLabel:"border-width:0px;"
            }
          },
          
          svgCode: {
            template: "textAreaTemplate",
            label: "",
            properties: {
              disabled: true,
              rows: 16,
              spellcheck: false
            },
            classes:{
              elementContainer:"mui--text-dark-hint",
            },
            values:{
              resetable:false
            }
          },
  
          chartDivider:{
            label:"Chart settings",
            template:"dividerTemplate"
          },
  
          dataDivider:{
            label:"Source data settings",
            template:"dividerTemplate"
          },
        },
        layout: {
          settings: {
            prefix: "layout",
            root: "root"
          },
          pages: {
            root: {
              label: "Settings menu",
              items: ["chartDivider", "arrangePreview", "scaleRatio","saveSettings","manageSettings","dataDivider","dataSettings","embedDivider","embedCode"]
            },

            dataSettings: {
              label: "Data",
              items: ["sourceDivider", "wholeSheet", "selectedRange", "columnDivider", 
                      "fromColumn", "toColumn", "weightColumn","filterDivider","applyFilters","resetButton_dataSettings"],
               on:{
                enter:function (elementer,branch) {
                  elementer.getElements().controls.resetButton_dataSettings.disabled = true;
                  Process.reserveResetValues (elementer, branch);
                },
                exit:function (elementer, branch) {
                  Process.restoreResetValues (Process.control.sankey.elementer , branch);
                }
              }
            },
            
  
            manageSettings: {
              label:"Reset",
              items:["useInitial","useStandard","useUser", "useDocument","applyButton"],
              on: {
                exit: function (elementer, branch) {
                  // reset the buttons to apply next time in
                  Process.control.buttons.apply.disabled=false;
                }
              }
            },
            
            saveSettings: {
              label:"Save",
              items:["makePermanent","makeDefault","clearPermanent","clearDefault","manageButton"],
              on: {
                exit: function (elementer, branch) {
                  // reset the buttons to apply next time in
                  Process.control.buttons.manage.disabled=false;
                }
              }
            },
            
            embedCode: {
              label: "Get",
              items: ["svgLabel","svgCode","resetButton_embedCode"]
            },
            
            arrangePreview: {
              label: "Appearance",
              items: ["previewHeight", "previewWidth", "links", "nodes","tooltips","resetButton_arrangePreview"],
              on:{
                enter:function (elementer,branch) {
                  elementer.getElements().controls.resetButton_arrangePreview.disabled = true;
                  Process.reserveResetValues (elementer, branch);
                },
                exit:function (elementer, branch) {
                  Process.restoreResetValues (Process.control.sankey.elementer , branch);
                }
              }
            },
            
            scaleRatio: {
              label: "Scale",
              items: ["scaleHeight", "scaleWidth", "scaleFont","resetButton_scaleRatio"],
              on:{
                enter:function (elementer,branch) {
                 elementer.getElements().controls.resetButton_scaleRatio.disabled = true;
                  Process.reserveResetValues (elementer, branch);
                },
                exit:function (elementer, branch) {
                  Process.restoreResetValues (Process.control.sankey.elementer , branch);
                }
              }
            },
            
            links: {
              label: "Links",
              items: ["linkColorMode","linkFillColor", "linkOpacity", "linkBorderColor", "linkBorderWidth","resetButton_links"],
              on:{
                enter:function (elementer,branch) {
                  elementer.getElements().controls.resetButton_links.disabled = true;
                  Process.reserveResetValues (elementer, branch);
                },
                exit:function (elementer, branch) {
                  Process.restoreResetValues (Process.control.sankey.elementer , branch);
                }
              }
            },
            
            nodes: {
              label: "Nodes",
              items: ["nodePadding", "nodeWidth", "labelDivider", "labelPadding",  "labelFontSize", 
                      "labelFontColor", "labelFontName","labelFontBold", "labelFontItalic","resetButton_nodes"],
              on:{
                enter:function (elementer,branch) {
                  elementer.getElements().controls.resetButton_nodes.disabled = true;
                  Process.reserveResetValues (elementer, branch);
                },
                exit:function (elementer, branch) {
                  Process.restoreResetValues (Process.control.sankey.elementer , branch);
                }
              }
            },
            tooltips: {
              label: "Tooltips",
              items: ["tooltipFontSize", "tooltipFontColor", "tooltipFontName","tooltipFontBold", "tooltipFontItalic","resetButton_tooltips"],
              on:{
                enter:function (elementer,branch) {
                  elementer.getElements().controls.resetButton_tooltips.disabled = true;
                  Process.reserveResetValues (elementer, branch);
                },
                exit:function (elementer, branch) {
                  Process.restoreResetValues (Process.control.sankey.elementer , branch);
                }
              }
            }
          }
        }
      }
    };
    
    
    
    return sankey;
    
  })(Sankey || {});