/**
 * This exporter produces HTML files for the supplied data.
 */
Ext.define('Ext.exporter.text.Html', {
    extend: 'Ext.exporter.Base',
 
    alias: 'exporter.html',
 
    requires: [
        'Ext.exporter.file.html.Doc'
    ],
 
    config: {
        tpl: [
            '<!DOCTYPE html>\n',
            '<html>\n',
            '   <head>\n',
            '       <meta charset="{charset}">\n',
            '       <title>{title}</title>\n',
            '       <style>\n',
            '       table { border-collapse: collapse; border-spacing: 0; }\n',
            '<tpl if="styles"><tpl for="styles.getRange()">{[values.render()]}</tpl></tpl>',
            '       </style>\n',
            '   </head>\n',
            '   <body>\n',
            '       <h1>{title}</h1>\n',
            '       <table>\n',
            '           <thead>\n',
            '<tpl for="table.columns">',
            '               <tr>\n',
            '<tpl for=".">',
            '                   <th<tpl if="width"> width="{width}"</tpl><tpl if="mergeAcross"> colSpan="{mergeAcross}"</tpl><tpl if="mergeDown"> rowSpan="{mergeDown}"</tpl>>{text}</th>\n',
            '</tpl>',
            '               </tr>\n',
            '</tpl>',
            '           </thead>\n',
            '           <tbody>\n',
            '<tpl for="table.rows">',
            '               <tr<tpl if="cls"> class="{cls}"</tpl>>\n',
            '<tpl for="cells">',
            '                   <td<tpl if="cls"> class="{cls}"</tpl><tpl if="mergeAcross"> colSpan="{mergeAcross}"</tpl><tpl if="mergeDown"> rowSpan="{mergeDown}"</tpl>>{value}</td>\n',
            '</tpl>',
            '               </tr>\n',
            '</tpl>',
            '           </tbody>\n',
            '           <tfoot>\n',
            '               <tr>\n',
            '                   <th<tpl if="table.columnsCount"> colSpan="{table.columnsCount}"</tpl>>&nbsp;</th>\n',
            '               </tr>\n',
            '           </tfoot>\n',
            '       </table>\n',
            '   </body>\n',
            '</html>'
        ],
 
        /**
         * @cfg {Ext.exporter.file.html.Style} defaultStyle
         *
         * Default style applied to all cells
         */
        defaultStyle: {
            name: 'table tbody td, table thead th',
            alignment: {
                vertical: 'Top'
            },
            font: {
                fontName: 'Arial',
                size: 12,
                color: '#000000'
            },
            borders: [{
                position: 'Left',
                lineStyle: 'Continuous',
                weight: 1,
                color: '#4F81BD'
            },{
                position: 'Right',
                lineStyle: 'Continuous',
                weight: 1,
                color: '#4F81BD'
            }]
        },
 
        /**
         * @cfg {Ext.exporter.file.html.Style} titleStyle
         *
         * Default style applied to the title
         */
        titleStyle: {
            name: 'h1',
            font: {
                fontName: 'Arial',
                size: 18,
                color: '#1F497D'
            }
        },
 
        /**
         * @cfg {Ext.exporter.file.html.Style} groupHeaderStyle
         *
         * Default style applied to the group headers
         */
        groupHeaderStyle: {
            name: '.groupHeader td',
            borders: [{
                position: 'Top',
                lineStyle: 'Continuous',
                weight: 1,
                color: '#4F81BD'
            },{
                position: 'Bottom',
                lineStyle: 'Continuous',
                weight: 1,
                color: '#4F81BD'
            }]
        },
 
        /**
         * @cfg {Ext.exporter.file.html.Style} groupFooterStyle
         *
         * Default style applied to the group footers
         */
        groupFooterStyle: {
            name: '.groupFooter td',
            borders: [{
                position: 'Bottom',
                lineStyle: 'Continuous',
                weight: 1,
                color: '#4F81BD'
            }]
        },
 
        /**
         * @cfg {Ext.exporter.file.html.Style} tableHeaderStyle
         *
         * Default style applied to the table headers
         */
        tableHeaderStyle: {
            name: 'table thead th',
            alignment: {
                horizontal: 'Center',
                vertical: 'Center'
            },
            borders: [{
                position: 'Top',
                lineStyle: 'Continuous',
                weight: 1,
                color: '#4F81BD'
            },{
                position: 'Bottom',
                lineStyle: 'Continuous',
                weight: 1,
                color: '#4F81BD'
            }],
            font: {
                fontName: 'Arial',
                size: 12,
                color: '#1F497D'
            }
        },
        /**
         * @cfg {Ext.exporter.file.html.Style} tableFooterStyle
         *
         * Default style applied to the table footer
         */
        tableFooterStyle: {
            name: 'table tfoot th',
            borders: [{
                position: 'Top',
                lineStyle: 'Continuous',
                weight: 1,
                color: '#4F81BD'
            }]
        }
    },
 
    fileName: 'export.html',
    mimeType: 'text/html',
 
    getContent: function(){
        var me = this,
            config = me.getConfig(),
            data = config.data,
            table = {
                columnsCount: 0,
                columns: [],
                rows: []
            },
            colMerge, html;
 
        me.doc = new Ext.exporter.file.html.Doc({
            title:  config.title,
            author: config.author,
            tpl:    config.tpl,
            styles: [ config.defaultStyle, config.titleStyle, config.groupHeaderStyle, config.groupFooterStyle, config.tableHeaderStyle, config.tableFooterStyle ]
        });
 
        if(data) {
            colMerge = data.getColumnCount();
            Ext.apply(table, {
                columnsCount: data.getColumnCount(),
                columns: me.buildHeader(),
                rows: me.buildRows(data.getGroups(), colMerge, 0)
            });
        }
        me.doc.setTable(table);
 
        html = me.doc.render();
        me.doc = me.columnStyles = Ext.destroy(me.doc);
 
        return html;
    },
 
    buildRows: function (groups, colMerge, level) {
        var me = this,
            showSummary = me._showSummary,
            result = [],
            g, row, i, j, k, gLen, rLen, cLen, cell, r, cells, oneLine, style;
 
        if(groups) {
            me.doc.addStyle({
                name: '.levelHeader' + level,
                alignment: {
                    Horizontal: 'Left',
                    Indent: (level > 0 ? level - 1 : 0) * 5
                }
            });
            me.doc.addStyle({
                name: '.levelFooter' + level,
                alignment: {
                    Horizontal: 'Left',
                    Indent: (level > 0 ? level - 1 : 0) * 5
                }
            });
 
            gLen = groups.length;
            for (= 0; i < gLen; i++) {
                g = groups.items[i];
 
                // if the group has no subgroups and no rows then show only summaries 
                oneLine = (!g._groups && !g._rows);
 
                if (!Ext.isEmpty(g._text) && !oneLine) {
                    result.push({
                        cls: 'groupHeader',
                        cells: [{value: g._text, mergeAcross: colMerge, cls: 'levelHeader' + level}]
                    });
                }
 
                if(g._groups) {
                    Ext.Array.insert(result, result.length, me.buildRows(g._groups, colMerge, level + 1));
                }
 
                if(g._rows) {
                    rLen = g._rows.length;
                    for(= 0; j < rLen; j++){
                        row = [];
                        r = g._rows.items[j];
                        cells = r._cells;
                        cLen = cells.length;
                        for(= 0; k < cLen; k++){
                            cell = cells.items[k].getConfig();
                            style = me.columnStyles[k];
                            if(style) {
                                cell.cls = style._id;
                                cell.value = style.getFormattedValue(cell.value);
                            }
                            row.push(cell);
                        }
                        result.push({
                            cells: row
                        });
                    }
                }
 
                if( g._summaries && (showSummary || oneLine) ){
                    rLen = g._summaries.length;
 
                    for(= 0; j < rLen; j++){
                        row = [];
                        r = g._summaries.items[j];
                        cells = r._cells;
                        cLen = cells.length;
                        for(= 0; k < cLen; k++){
                            cell = cells.items[k].getConfig();
                            style = me.columnStyles[k];
                            cell.cls = (=== 0 ? 'levelFooter' + level : '');
                            if(style) {
                                cell.cls += ' ' + style.getId();
                                cell.value = style.getFormattedValue(cell.value);
                            }
                            row.push(cell);
                        }
                        result.push({
                            cls: 'groupFooter' + (oneLine ? ' groupHeader' : ''),
                            cells: row
                        });
                    }
                }
            }
        }
 
        return result;
    },
 
    buildHeader: function () {
        var me = this,
            ret = {},
            data = me.getData(),
            arr, lenCells, i, style;
 
        me.buildHeaderRows(data.getColumns(), ret);
 
        arr = data.getBottomColumns();
        lenCells = arr.length;
        me.columnStyles = [];
 
        for(= 0; i < lenCells; i++){
            style = arr[i].getStyle() || {};
            if(!style.id){
                style.id = Ext.id();
            }
            style.name = '.' + style.id;
            me.columnStyles.push(me.doc.addStyle(style));
        }
 
        return Ext.Object.getValues(ret);
    },
 
    buildHeaderRows: function (columns, result) {
        var col, i, len, name, s;
 
        if (!columns) {
            return;
        }
 
        len = columns.length;
        for (= 0; i < len; i++) {
            col = columns.items[i].getConfig();
 
            name = 's' + col.level;
            result[name] = result[name] || [];
 
 
            if(col.mergeAcross){
                col.mergeAcross++;
            }
 
            if(col.mergeDown){
                col.mergeDown++;
            }
 
            result[name].push(col);
 
            this.buildHeaderRows(col.columns, result);
        }
    }
 
});