import React from 'react'
import { Box } from '$components';
import ReactEcharts from 'echarts-for-react';
import * as echarts from 'echarts';
import './style.less';

function ThreeDBarChart() {
    const offsetX = 12;  //bar宽
    const offsetY = 6;   //倾斜角度
    // 绘制左侧面
    const CubeLeft = echarts.graphic.extendShape({
        shape: {
            x: 0,
            y: 0,
        },
        buildPath: function (ctx, shape) {
            // 会canvas的应该都能看得懂，shape是从custom传入的
            const xAxisPoint = shape.xAxisPoint;
            // console.log(shape);
            const c0 = [shape.x, shape.y];
            const c1 = [shape.x - offsetX, shape.y - offsetY];
            const c2 = [xAxisPoint[0] - offsetX, xAxisPoint[1] - offsetY];
            const c3 = [xAxisPoint[0], xAxisPoint[1]];
            ctx.moveTo(c0[0], c0[1]).lineTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).closePath();
        },
    });
    // 绘制右侧面
    const CubeRight = echarts.graphic.extendShape({
        shape: {
            x: 0,
            y: 0,
        },
        buildPath: function (ctx, shape) {
            const xAxisPoint = shape.xAxisPoint;
            const c1 = [shape.x, shape.y];
            const c2 = [xAxisPoint[0], xAxisPoint[1]];
            const c3 = [xAxisPoint[0] + offsetX, xAxisPoint[1] - offsetY];
            const c4 = [shape.x + offsetX, shape.y - offsetY];
            ctx.moveTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).lineTo(c4[0], c4[1]).closePath();
        },
    });
    // 绘制顶面
    const CubeTop = echarts.graphic.extendShape({
        shape: {
            x: 0,
            y: 0,
        },
        buildPath: function (ctx, shape) {
            const c1 = [shape.x, shape.y];
            const c2 = [shape.x + offsetX, shape.y - offsetY]; //右点
            // const c3 = [shape.x, shape.y - offsetX];
            const c3 = [shape.x, shape.y - offsetY * 2];
            const c4 = [shape.x - offsetX, shape.y - offsetY];
            ctx.moveTo(c1[0], c1[1]).lineTo(c2[0], c2[1]).lineTo(c3[0], c3[1]).lineTo(c4[0], c4[1]).closePath();
        },
    });
    // 注册三个面图形
    echarts.graphic.registerShape('CubeLeft', CubeLeft);
    echarts.graphic.registerShape('CubeRight', CubeRight);
    echarts.graphic.registerShape('CubeTop', CubeTop);
    let xAxisData = ["1人", "2人", "3人", "4人", "5人及以上"]
    let seriesData = [100, 200, 300, 400, 300]
    let colorArr = [["#42D5F8"], ["#2086B0", "rgba(13,8,16,0)"], ["#3394D7", "rgba(14,185,151,0)"]]
    const option = {
        tooltip: {
            trigger: 'axis',
            axisPointer: {
                type: 'shadow',
            },
            // formatter: function (params, ticket, callback) {
            //     const item = params[1];
            //     return item.name + ' : ' + item.value;
            // },
        },
        grid: {
            left: '5%',
            right: '5%',
            top: '20%',
            bottom: '3%',
            containLabel: true,
        },
        xAxis: {
            type: 'category',
            data: xAxisData,
            axisLine: {
                show: false,
                lineStyle: {
                    width: 2,
                    color: '#E6EFFF',
                },
            },
            axisTick: {
                show: false,
            },
            axisLabel: {
                fontSize: 13,
                interval: 0,
                color: "#E6EFFF",
            },
        },
        yAxis: {
            type: 'value',
            name: "单位:户",
            // nameGap: 30,
            nameTextStyle: {
                color: "rgba(195, 230, 255, 1)",
                fontWeight: 400,
                fontSize: 14,
                padding: [-20, 20, 0, 0]
            },
            axisLine: {
                // show: false,
                lineStyle: {
                    width: 2,
                    color: '#2B7BD6',
                },
            },
            splitLine: {
                // show: false,
                lineStyle: {
                    color: '#153D7D',
                },
            },
            axisTick: {
                // show: false,
            },
            axisLabel: {
                // show: false,
                fontSize: 14,
                color: 'E6EFFF'
            },
            // boundaryGap: ['20%', '20%'],
        },
        series: [
            {
                type: 'custom',
                renderItem: (params, api) => {
                    const location = api.coord([api.value(0), api.value(1)]);
                    return {
                        type: 'group',
                        children: [
                            {
                                type: 'CubeLeft',
                                shape: {
                                    api,
                                    xValue: api.value(0),
                                    yValue: api.value(1),
                                    x: location[0],
                                    y: location[1],
                                    xAxisPoint: api.coord([api.value(0), 0]),
                                },
                                style: {
                                    fill: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
                                        {
                                            offset: 0,
                                            color: colorArr[1][0],
                                        },
                                        {
                                            offset: 1,
                                            color: colorArr[1][1],
                                        },
                                    ]),
                                },
                            },
                            {
                                type: 'CubeRight',
                                shape: {
                                    api,
                                    xValue: api.value(0),
                                    yValue: api.value(1),
                                    x: location[0],
                                    y: location[1],
                                    xAxisPoint: api.coord([api.value(0), 0]),
                                },
                                style: {
                                    fill: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
                                        {
                                            offset: 0,
                                            color: colorArr[2][0],
                                        },
                                        {
                                            offset: 1,
                                            color: colorArr[2][1],
                                        },
                                    ]),
                                },
                            },
                            {
                                type: 'CubeTop',
                                shape: {
                                    api,
                                    xValue: api.value(0),
                                    yValue: api.value(1),
                                    x: location[0],
                                    y: location[1],
                                    xAxisPoint: api.coord([api.value(0), 0]),
                                },
                                style: {
                                    fill: new echarts.graphic.LinearGradient(0, 0, 0, 1, [
                                        {
                                            offset: 0,
                                            color: colorArr[0][0],
                                        },
                                        {
                                            offset: 1,
                                            color: colorArr[0][0],
                                        },
                                    ]),
                                },
                            },
                        ],
                    };
                },
                data: seriesData,
            },
        ],
    };


    return <>
        <div className='bar_legend'><div className='_block' />家庭人口数</div>
        <ReactEcharts
            option={option}
            notMerge
            lazyUpdate
            style={{ height: 231, width: 423 }}
        />
    </>
}

export default ThreeDBarChart;