/*
title: Confidence Band
category: line
titleCN: Confidence Band
difficulty: 4
*/

myChart.showLoading();
$.get(ROOT_PATH + '/data/asset/data/confidence-band.json', function (data) {
    myChart.hideLoading();

    var base = -data.reduce(function (min, val) {
        return Math.floor(Math.min(min, val.l));
    }, Infinity);
    myChart.setOption(option = {
        title: {
            text: 'Confidence Band',
            subtext: 'Example in MetricsGraphics.js',
            left: 'center'
        },
        tooltip: {
            trigger: 'axis',
            axisPointer: {
                type: 'cross',
                animation: false,
                label: {
                    backgroundColor: '#ccc',
                    borderColor: '#aaa',
                    borderWidth: 1,
                    shadowBlur: 0,
                    shadowOffsetX: 0,
                    shadowOffsetY: 0,

                    color: '#222'
                }
            },
            formatter: function (params) {
                return params[2].name + '<br />' + ((params[2].value - base) * 100).toFixed(1) + '%';
            }
        },
        grid: {
            left: '3%',
            right: '4%',
            bottom: '3%',
            containLabel: true
        },
        xAxis: {
            type: 'category',
            data: data.map(function (item) {
                return item.date;
            }),
            axisLabel: {
                formatter: function (value, idx) {
                    var date = new Date(value);
                    return idx === 0 ? value : [date.getMonth() + 1, date.getDate()].join('-');
                }
            },
            boundaryGap: false
        },
        yAxis: {
            axisLabel: {
                formatter: function (val) {
                    return (val - base) * 100 + '%';
                }
            },
            axisPointer: {
                label: {
                    formatter: function (params) {
                        return ((params.value - base) * 100).toFixed(1) + '%';
                    }
                }
            },
            splitNumber: 3
        },
        series: [{
            name: 'L',
            type: 'line',
            data: data.map(function (item) {
                return item.l + base;
            }),
            lineStyle: {
                opacity: 0
            },
            stack: 'confidence-band',
            symbol: 'none'
        }, {
            name: 'U',
            type: 'line',
            data: data.map(function (item) {
                return item.u - item.l;
            }),
            lineStyle: {
                opacity: 0
            },
            areaStyle: {
                color: '#ccc'
            },
            stack: 'confidence-band',
            symbol: 'none'
        }, {
            type: 'line',
            data: data.map(function (item) {
                return item.value + base;
            }),
            hoverAnimation: false,
            symbolSize: 6,
            itemStyle: {
                color: '#333'
            },
            showSymbol: false
        }]
    });
});