/*
 * 图表parse插件
 */

UE.parse.register('charts',function( utils ){

    var resourceRoot = this.rootPath,
        containers = this.root,
        sources = null;

    //不存在指定的根路径， 则直接退出
    if ( !resourceRoot ) {
        return;
    }

    if ( sources = parseSources() ) {

        loadResources();

    }


    function parseSources () {

        if ( !containers ) {
            return null;
        }

        return extractChartData( containers );

    }

    /**
     * 提取数据
     */
    function extractChartData ( rootNode ) {

        var data = [],
            tables = rootNode.getElementsByTagName( "table" );

        for ( var i = 0, tableNode; tableNode = tables[ i ]; i++ ) {

            if ( tableNode.getAttribute( "data-chart" ) !== null ) {

                data.push( formatData( tableNode ) );

            }

        }

        return data.length ? data : null;

    }

    function formatData ( tableNode ) {

        var meta = tableNode.getAttribute( "data-chart" ),
            metaConfig = {},
            data = [];

        //提取table数据
        for ( var i = 0, row; row = tableNode.rows[ i ]; i++ ) {

            var rowData = [];

            for ( var j = 0, cell; cell = row.cells[ j ]; j++ ) {

                rowData.push( ( cell.innerText || cell.textContent ) | 0 );

            }

            data.push( rowData );

        }

        //解析元信息
        meta = meta.split( ";" );
        for ( var i = 0, metaData; metaData = meta[ i ]; i++ ) {

            metaData = metaData.split( ":" );
            metaConfig[ metaData[ 0 ] ] = metaData[ 1 ];

        }


        return {
            table: tableNode,
            meta: metaConfig,
            data: data
        };

    }

    //加载资源
    function loadResources () {

        loadJQuery();

    }

    function loadJQuery () {

        //不存在jquery， 则加载jquery
        if ( !window.jQuery ) {

            utils.loadFile(document,{
                src : resourceRoot + "/third-party/jquery-1.10.2.min.js",
                tag : "script",
                type : "text/javascript",
                defer : "defer"
            },function(){

                loadHighcharts();

            });

        } else {

            loadHighcharts();

        }

    }

    function loadHighcharts () {

        //不存在Highcharts， 则加载Highcharts
        if ( !window.Highcharts ) {

            utils.loadFile(document,{
                src : resourceRoot + "/third-party/highcharts/highcharts.js",
                tag : "script",
                type : "text/javascript",
                defer : "defer"
            },function(){

                loadTypeConfig();

            });

        } else {

            loadTypeConfig();

        }

    }

    //加载图表差异化配置文件
    function loadTypeConfig () {

        utils.loadFile(document,{
            src : resourceRoot + "/dialogs/charts/chart.config.js",
            tag : "script",
            type : "text/javascript",
            defer : "defer"
        },function(){

            render();

        });

    }

    //渲染图表
    function render () {

        var config = null,
            chartConfig = null,
            container = null;

        for ( var i = 0, len = sources.length; i < len; i++ ) {

            config = sources[ i ];

            chartConfig = analysisConfig( config );

            container = createContainer( config.table );

            renderChart( container, typeConfig[ config.meta.chartType ], chartConfig );

        }


    }

    /*
     * 渲染图表
     * @param container 图表容器节点对象
     * @param typeConfig 图表类型配置
     * @param config 图表通用配置
     * */
    function renderChart ( container, typeConfig, config ) {


        $( container ).highcharts( $.extend( {}, typeConfig, {

            credits: {
                enabled: false
            },
            exporting: {
                enabled: false
            },
            title: {
                text: config.title,
                x: -20 //center
            },
            subtitle: {
                text: config.subTitle,
                x: -20
            },
            xAxis: {
                title: {
                    text: config.xTitle
                },
                categories: config.categories
            },
            yAxis: {
                title: {
                    text: config.yTitle
                },
                plotLines: [{
                    value: 0,
                    width: 1,
                    color: '#808080'
                }]
            },
            tooltip: {
                enabled: true,
                valueSuffix: config.suffix
            },
            legend: {
                layout: 'vertical',
                align: 'right',
                verticalAlign: 'middle',
                borderWidth: 1
            },
            series: config.series

        } ));

    }

    /*
     * 创建图表的容器
     * 新创建的容器会替换掉对应的table对象
     * */
    function createContainer ( tableNode ) {

        var container = document.createElement( "div" );
        container.className = "edui-chart-container";

        tableNode.parentNode.replaceChild( container, tableNode );

        return container;

    }

    //根据config解析出正确的类别和图表数据信息
    function analysisConfig ( config ) {

        var series = [],
        //数据类别
            categories = [],
            result = [],
            data = config.data,
            meta = config.meta;

        //数据对齐方式为相反的方式， 需要反转数据
        if ( meta.dataFormat != "1" ) {

            for ( var i = 0, len = data.length; i < len ; i++ ) {

                for ( var j = 0, jlen = data[ i ].length; j < jlen; j++ ) {

                    if ( !result[ j ] ) {
                        result[ j ] = [];
                    }

                    result[ j ][ i ] = data[ i ][ j ];

                }

            }

            data = result;

        }

        result = {};

        //普通图表
        if ( meta.chartType != typeConfig.length - 1 ) {

            categories = data[ 0 ].slice( 1 );

            for ( var i = 1, curData; curData = data[ i ]; i++ ) {
                series.push( {
                    name: curData[ 0 ],
                    data: curData.slice( 1 )
                } );
            }

            result.series = series;
            result.categories = categories;
            result.title = meta.title;
            result.subTitle = meta.subTitle;
            result.xTitle = meta.xTitle;
            result.yTitle = meta.yTitle;
            result.suffix = meta.suffix;

        } else {

            var curData = [];

            for ( var i = 1, len = data[ 0 ].length; i < len; i++ ) {

                curData.push( [ data[ 0 ][ i ], data[ 1 ][ i ] | 0 ] );

            }

            //饼图
            series[ 0 ] = {
                type: 'pie',
                name: meta.tip,
                data: curData
            };

            result.series = series;
            result.title = meta.title;
            result.suffix = meta.suffix;

        }

        return result;

    }

});