import { ref, watch } from "vue";
import { toDecimalFull } from '@/utils/number';
import { getTheme, ThemeEnum } from '@/common/config/theme';
import { deepMerge } from '@/utils/objHandle'
import { EChartsOption } from 'echarts';
import * as echarts from 'echarts';

// 命名待优化
type Colors = {
    backgroundColor: string, // 图表背景颜色
    axisPointerLabelColor: string,
    legendTextColor: string,
    xAxisLineColor: string
    yAxisLineColor: string,
    seriesMarkLabelColor: string,
    seriesMarkLineColor: string,
    upColor: string,
    downColor: string,
    seriesLineColor: string,
    seriesAreaGradients: echarts.LinearGradientObject,
}

// 图表数据
export type ChartData = {
    datas: number[], // 历史数据
    times: string[], // 历史日期
    yestclose: number, // 昨日收盘价
    last: number, // 最新行情价
    lastTime: string, // 最新行情时间
    decimal: number, // 保留小数位
    min: number, // Y轴最低指标线
    max: number, // Y轴最高指标线
    ma5: (number | string)[], //均线数据
}

export function handleEchart() {
    const options = ref<EChartsOption>({});
    // 当前主题
    const theme = getTheme();
    // 图表数据
    const chartData = ref<ChartData>({
        datas: [],
        times: [],
        yestclose: 0,
        last: 0,
        lastTime: '',
        decimal: 0,
        min: 0,
        max: 0,
        ma5: []
    });

    // 计算涨跌幅百分比
    const calcRatio = (val: number) => {
        const result = (Number(val) - chartData.value.yestclose) / chartData.value.yestclose * 100;
        return toDecimalFull(result) + '%';
    }

    // 初始化图表配置
    const initOptions = () => {
        const { datas, times, yestclose, last, min, max, ma5, decimal } = chartData.value;
        const option: EChartsOption = {
            legend: {
                //图例控件,点击图例控制哪些系列不显示
                type: 'scroll',
                itemWidth: 14,
                itemHeight: 2,
                left: '5%',
                top: 0,
                textStyle: {
                    fontSize: 12,
                },
            },
            // 悬浮框
            tooltip: {
                trigger: 'axis',
                axisPointer: {
                    type: 'cross',
                },
                backgroundColor: 'rgba(255,255,255,.9)',
                borderWidth: 1,
                borderRadius: 3,
                textStyle: {
                    color: '#4d535c',
                },
                // eslint-disable-next-line
                formatter: (params: any) => {
                    const i = params[0].dataIndex;
                    const result = `
    <div><span style="display: inline-block; width: 40px">当前价：</span><span style="display: inline-block; width: 100px; text-align: right">${datas[i]}</span></div>
    <div><span style="display: inline-block; width: 40px">均价：</span><span style="display: inline-block; width: 100px; text-align: right">${ma5[i]}</span></div>
    <div><span style="display: inline-block; width: 40px">涨幅：</span><span style="display: inline-block; width: 100px; text-align: right">${calcRatio(datas[i])}</span></div>`;
                    return result;
                },
            },
            grid: {
                top: '8%',
                left: '8%',
                right: '8%',
                bottom: '8%',
            },
            xAxis: {
                type: 'category',
                // X轴时间线
                data: times,
                splitLine: {
                    // 坐标分隔线
                    show: true,
                },
            },
            yAxis: [
                // Y轴左侧标签
                {
                    id: 'leftPrice',
                    scale: true,
                    min: min,
                    max: max,
                    axisLabel: {
                        formatter: (val: number) => toDecimalFull(val, decimal),
                    }
                },
                // Y轴右侧标签
                {
                    id: 'rightRatio',
                    scale: true,
                    min: min,
                    max: max,
                    splitLine: {
                        show: false,
                    },
                    axisLabel: {
                        formatter: (val: number) => calcRatio(val),
                    }
                },
            ],
            // series 中不指定 yAxisId 或 yAxisIndex 默认关联 yAxis 第一个配置，xAxis 配置同理
            series: [
                {
                    name: '当前价',
                    type: 'line',
                    yAxisId: 'leftPrice',
                    data: chartData.value.datas,
                    smooth: true,
                    symbol: 'circle', //中时有小圆点
                    lineStyle: {
                        opacity: 0.8,
                        width: 1,
                    },
                    markLine: {
                        // 标线两端图标
                        symbol: 'none',
                        // 标线标签样式
                        data: [
                            {
                                // 最新价
                                yAxis: last,
                            },
                            {
                                // 昨结价
                                yAxis: yestclose,
                                lineStyle: {
                                    color: '#333',
                                },
                                label: {
                                    show: false,
                                }
                            },
                        ],
                    },
                },
                {
                    type: 'line',
                    yAxisId: 'rightRatio', // 关联Y轴右侧标签
                    data: datas,
                    symbol: 'none',
                    lineStyle: {
                        width: 0,
                    },
                },
                {
                    name: '均价',
                    type: 'line',
                    data: ma5,
                    smooth: true,
                    symbol: 'none',
                    lineStyle: {
                        width: 1,
                        opacity: 0.8,
                    },
                },
            ],
        };

        options.value = deepMerge(option, getColors(theme.value));
    };

    // 动态更新数据
    const updateOptions = () => {
        const { datas, last, yestclose, min, max } = chartData.value;
        if (datas.length) {
            options.value = {
                yAxis: [
                    // Y轴左侧标签
                    {
                        id: 'leftPrice',
                        min: min,
                        max: max,
                    },
                    // Y轴右侧标签
                    {
                        id: 'rightRatio',
                        min: min,
                        max: max,
                    },
                ],
                series: [
                    {
                        markLine: {
                            data: [
                                {
                                    // 最新价
                                    yAxis: last,
                                },
                                {
                                    // 昨结价
                                    yAxis: yestclose,
                                    lineStyle: {
                                        color: '#333',
                                    },
                                    label: {
                                        show: false,
                                    }
                                },
                            ],
                        },
                    },
                ],
            };
        }
    };

    // 设置图表样式
    const setColors = (colors: Colors): EChartsOption => {
        const { yestclose } = chartData.value;
        return {
            // 图表背景颜色
            backgroundColor: colors.backgroundColor,
            axisPointer: {
                label: {
                    color: colors.axisPointerLabelColor,
                },
            },
            legend: {
                textStyle: {
                    color: colors.legendTextColor,
                },
            },
            xAxis: {
                splitLine: {
                    lineStyle: {
                        // 坐标分隔线颜色
                        color: colors.xAxisLineColor,
                    },
                },
            },
            yAxis: [
                // Y轴左侧标签
                {
                    id: 'leftPrice',
                    axisLabel: {
                        color: (val: any) => {
                            if (val > yestclose) return colors.upColor;
                            if (val < yestclose) return colors.downColor;
                            return '#3C454B';
                        },
                    },
                    splitLine: {
                        lineStyle: {
                            // 坐标分隔线颜色
                            color: colors.yAxisLineColor,
                        },
                    },
                },
                // Y轴右侧标签
                {
                    id: 'rightRatio',
                    axisLabel: {
                        color: (val: any) => {
                            if (val > yestclose) return colors.upColor;
                            if (val < yestclose) return colors.downColor;
                            return '#3C454B';
                        },
                    },
                },
            ],
            series: [
                {
                    lineStyle: {
                        color: colors.seriesLineColor,
                    },
                    areaStyle: {
                        color: colors.seriesAreaGradients,
                        shadowColor: 'rgba(0, 0, 0, 0.1)',
                        shadowBlur: 10,
                    },
                    markLine: {
                        // 标线标签样式
                        label: {
                            color: colors.seriesMarkLabelColor,
                        },
                        // 标线样式
                        lineStyle: {
                            color: colors.seriesMarkLineColor,
                        },
                    },
                }
            ]
        }
    }

    // 获取图表样式配置
    const getColors = (theme: ThemeEnum) => {
        switch (theme) {
            case ThemeEnum.default:
            case ThemeEnum.dark:
                return setColors({
                    backgroundColor: 'transparent',
                    axisPointerLabelColor: '#fff',
                    legendTextColor: '#0e99e2',
                    xAxisLineColor: '#171B1D',
                    yAxisLineColor: '#171B1D',
                    seriesMarkLabelColor: '#3C454B',
                    seriesMarkLineColor: '#33393D',
                    upColor: '#FF2B2B',
                    downColor: '#1FF195',
                    seriesLineColor: '#39afe6',
                    seriesAreaGradients: new echarts.graphic.LinearGradient(0, 0, 0, 1,
                        [
                            {
                                offset: 0,
                                color: 'rgba(0, 136, 212, 0.7)',
                            },
                            {
                                offset: 0.8,
                                color: 'rgba(0, 136, 212, 0.02)',
                            },
                        ],
                        false
                    ),
                });
            case ThemeEnum.light:
                return setColors({
                    backgroundColor: 'transparent',
                    axisPointerLabelColor: '#fff',
                    legendTextColor: '#FC9618',
                    xAxisLineColor: '#DAE5EC',
                    yAxisLineColor: '#DAE5EC',
                    seriesMarkLabelColor: '#666',
                    seriesMarkLineColor: '#ACB8C0',
                    upColor: '#FF2B2B',
                    downColor: '#00A843',
                    seriesLineColor: '#3864d7',
                    seriesAreaGradients: new echarts.graphic.LinearGradient(0, 0, 0, 1,
                        [
                            {
                                offset: 0,
                                color: 'rgba(0, 136, 212, 0.3)',
                            },
                            {
                                offset: 1,
                                color: 'rgba(0, 136, 212, 0.3)',
                            },
                        ],
                        false
                    ),
                });
        }
    }

    watch(theme, (val) => {
        options.value = getColors(val);
    });

    return {
        chartData,
        options,
        initOptions,
        updateOptions,
    }
}