WholeProcessPlatform/frontend/src/modules/qixidiliuliangbianhua/index.vue

<!-- SidePanelItem.vue -->
<template>
    <SidePanelItem title="水文监测" :select="select" :scopeDate="datetimePicker" @update-values="handlePanelChange1">
        <div class="chart-wrapper">
            <a-spin :spinning="loading">
                <!-- 始终渲染图表容器，确保有固定宽高 -->
                <div ref="chartRef" class="echarts-chart"></div>
                <!-- 无数据时显示Empty，但不影响容器尺寸 -->
                <div v-if="!loading && !hasData" class="empty-overlay">
                    <a-empty description="暂无数据" />
                </div>
            </a-spin>
        </div>
    </SidePanelItem>
</template>

<script lang="ts" setup>
import { ref, onMounted, onUnmounted, nextTick, watch } from 'vue';
import * as echarts from 'echarts';
import type { EChartsOption } from 'echarts';
import SidePanelItem from '@/components/SidePanelItem/index.vue';
import { useJidiSelectEventStore } from "@/store/modules/jidiSelectEvent";
import { msstbprptGetKendoList, sdriverdaysGetKendoList } from '@/api/qxd';
import { useModelStore } from "@/store/modules/model";
// 定义组件名
defineOptions({
    name: 'qixidiliuliangbianhua'
});

// ==================== 选择器配置 ====================
const JidiSelectEventStore = useJidiSelectEventStore();
const baseid = ref('')
const modelStore = useModelStore();

// Loading 状态和数据状态
const loading = ref(false);
const hasData = ref(true); // 初始化为 true，因为 initChart 时会渲染

const select = ref({
    show: true,
    value: undefined,
    options: [],
    picker: undefined,
    format: undefined
});
// 日期选择器配置
const datetimePicker: any = ref({
    show: true,
    value: (() => {
        const now = new Date();
        const currentMonth = `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, '0')}`;
        const lastMonth = new Date(now.getFullYear(), now.getMonth() - 1, 1);
        const lastMonthStr = `${lastMonth.getFullYear()}-${String(lastMonth.getMonth() + 1).padStart(2, '0')}`;
        return [lastMonthStr, currentMonth];
    })(),
    format: 'YY-MM',
    picker: 'month' as const,
    options: []
});

// ==================== 图表相关响应式数据 ====================
const chartRef = ref<HTMLElement | null>(null);
let chartInstance: echarts.ECharts | null = null;

// 图表数据（初始为空数组）
const echartsData = ref<any[]>([]);

// 图表配置引用（用于 legendselectchanged 时读取最新配置）
const echartOptionRef = ref<EChartsOption>({});

// ==================== 工具函数：omit ====================
const omit = (obj: any, key: string) => {
    const newObj = { ...obj };
    delete newObj[key];
    return newObj;
};

// ==================== 多Y轴动态布局算法 ====================
/**
 * 根据图例选中状态动态调整 Y 轴布局和 grid 边距
 * @param selected - 图例选中状态对象 { '系列名': boolean }
 * @param options - ECharts 配置对象
 * 
 * 规则：
 * - 左侧最多 1 个 Y 轴（第一个可见系列）
 * - 右侧可以显示多个 Y 轴（其余可见系列）
 */
const yAxisShowDynamic = (selected: Record<string, boolean>, options: any) => {
    const allShow = options.yAxis?.filter((item: any) => item.show);
    const showCount = allShow?.length || 0;

    // 没有显示的Y轴
    if (showCount === 0) {
        return;
    }

    // 只有一个Y轴：统一置于左侧
    if (showCount === 1) {
        options.grid = omit(options.grid, 'right');
        options.grid.left = '60px';

        options.yAxis = options.yAxis.map((item: any) => {
            if (item.show) {
                return {
                    ...item,
                    position: 'left',
                    offset: 0
                };
            }
            return item;
        });
        return;
    }

    // 两个及以上Y轴：左侧1个，右侧其余
    if (showCount >= 2) {
        let leftIndex = 0; // 左侧Y轴索引
        let rightIndex = 0; // 右侧Y轴计数

        options.yAxis = options.yAxis.map((item: any) => {
            if (!item.show) {
                return item;
            }

            // 第一个可见的Y轴放在左侧
            if (leftIndex === 0) {
                leftIndex++;
                options.grid = omit(options.grid, 'right');
                options.grid.left = '60px';

                return {
                    ...item,
                    position: 'left',
                    offset: 0
                };
            } else {
                // 其余Y轴放在右侧
                rightIndex++;

                // 右侧有多个Y轴时，需要增加右边距并设置偏移
                if (rightIndex > 1) {
                    options.grid.right = '100px';
                    return {
                        ...item,
                        position: 'right',
                        offset: 60
                    };
                } else {
                    options.grid.right = '60px';
                    return {
                        ...item,
                        position: 'right',
                        offset: 0
                    };
                }
            }
        });
    }
};

// ==================== 图表初始化 ====================
const initChart = () => {
    if (!chartRef.value) {
        console.warn('图表容器未就绪');
        return;
    }

    // 初始化 ECharts 实例
    chartInstance = echarts.init(chartRef.value);

    // 监听图例选择变化事件
    chartInstance.on('legendselectchanged', (params: any) => {
        const { selected } = params;

        // ✅ 方案A：手动构建新配置对象，保留所有函数引用（包括formatter）
        const currentOptions = echartOptionRef.value as any;

        const options: any = {
            ...currentOptions,
            legend: {
                ...currentOptions.legend,
                selected: selected
            },
            yAxis: Array.isArray(currentOptions.yAxis)
                ? currentOptions.yAxis.map((item: any) => {
                    let isShow = true;
                    for (const key in selected) {
                        if (key === item.name) {
                            isShow = selected[key];
                        }
                    }
                    return { ...item, show: isShow }; // ✅ 保留formatter等函数
                })
                : currentOptions.yAxis
        };

        // 触发布局调整
        yAxisShowDynamic(selected, options);

        // 完全替换模式更新配置
        chartInstance?.setOption(options, true);
        echartOptionRef.value = options;
    });

    // 监听数据点点击事件
    chartInstance.on('click', (params: any) => {
        // ✅ 判断是否点击的是数据点（series中的点）
        if (params.componentType === 'series') {
            modelStore.modalVisible = true;
            modelStore.params.sttp = "fh_zq_point";
            modelStore.title = "水文监测";
            modelStore.params.stcd = select.value.value;
            modelStore.showStcdSelector = true
            modelStore.stcdOptions = select.value.options
        }
    });
};

// ==================== 图表配置生成 ====================
const updateChart = () => {
    if (!chartInstance) return;

    // ✅ 计算数据统计值（用于Y轴动态范围）
    const qValues = echartsData.value.map(item => item.q).filter(v => v != null && !isNaN(v));
    const zValues = echartsData.value.map(item => item.z).filter(v => v != null && !isNaN(v));
    const vValues = echartsData.value.map(item => item.v).filter(v => v != null && !isNaN(v));

    const minQ = qValues.length > 0 ? Math.min(...qValues) : 0;
    const maxQ = qValues.length > 0 ? Math.max(...qValues) : 0;
    const minZ = zValues.length > 0 ? Math.min(...zValues) : 0;
    const maxZ = zValues.length > 0 ? Math.max(...zValues) : 0;
    const minV = vValues.length > 0 ? Math.min(...vValues) : 0;
    const maxV = vValues.length > 0 ? Math.max(...vValues) : 0;

    // ✅ 颜色和Y轴配置
    const Color = ['#9556a4', '#56c2e3', '#78c300'];

    const _legendData = ['流量(m³/s)', '水位(m)', '流速(m/s)'];

    const setting: EChartsOption = {
        // Tooltip 配置
        tooltip: {
            trigger: 'axis',
            backgroundColor: 'rgba(0, 0, 0, 0.5)',
            borderColor: 'transparent',
            textStyle: {
                color: '#ffffff'
            },
            valueFormatter: (value: any) => (value === undefined ? '-' : value),
            formatter: (params: any) => {
                let res = `${params[0].name}<br/>`;
                params.forEach((item: any) => {
                    const seriesName = item.seriesName ?? '';
                    const regx = /\(([^()]+?)\)/;
                    const unit = seriesName.match(regx);

                    if (item.value !== undefined && item.value !== null) {
                        // ✅ 保留两位小数
                        const formattedValue = Number(item.value).toFixed(2);
                        res += `<span style="background: ${item.color}; height:10px; width: 10px; border-radius: 50%; display: inline-block; margin-right:10px;"></span>${item.seriesName} ${formattedValue}${unit?.[1] || ''}<br/>`;
                    } else {
                        res += `<span style="background: ${item.color}; height:10px; width: 10px; border-radius: 50%; display: inline-block; margin-right:10px;"></span>${item.seriesName} -${unit?.[1] || ''}<br/>`;
                    }
                });
                return res;
            }
        },

        // ✅ 颜色配置：流量-紫色，水位-青色，流速-绿色
        color: Color,

        // 图例配置
        legend: {
            data: _legendData,
            selectedMode: 'multiple',
            top: 0,
            left: 'center',
            itemGap: 15,
            // 默认只选中"水温"，其他系列隐藏
            selected: {
                '流速(m/s)': false,
                '流量(m³/s)': true,
                '水位(m)': false
            }
        },
        axisPointer: {
            type: 'shadow',
            label: {
                show: false
            },
            shadowStyle: {
                color: 'rgba(84, 112, 198, 0.2)'
            }
        },
        // 网格配置 - 为三个Y轴预留空间
        grid: {
            left: '0px',
            right: '60px',
            bottom: '10%',
            top: '65px'
        },

        // 数据缩放配置
        dataZoom: {
            type: 'inside',
            start: 0,
            end: 100
        },

        // X轴配置
        xAxis: {
            type: 'category',
            data: echartsData.value.map(item => item.dt),
            boundaryGap: true,
            axisLabel: {
                show: true,
                // ✅ X轴标签显示策略：最多显示5个标签，强制显示首尾
                interval: (index: number) => {
                    const total = echartsData.value.length;
                    if (total <= 5) return true; // 数据少于等于5个，全部显示
                    if (index === 0 || index === total - 1) return true; // 首尾必显

                    // 中间标签均匀分布
                    const step = Math.floor((total - 1) / 3); // 中间显示3个
                    return index % step === 0;
                }
            },
            axisLine: {
                show: true
            },
            splitLine: {
                show: true,
                lineStyle: {
                    type: 'solid',
                    color: '#e0e0e0'
                }
            },
            axisPointer: {
                type: 'shadow',
                shadowStyle: {
                    color: 'rgba(84, 112, 198, 0.2)'
                }
            }
        },

        // Y轴配置 - 三个独立Y轴（按期望顺序：流量、水位、流速）
        yAxis: [
            {
                type: 'value',
                name: '流量(m³/s)',
                position: 'left',
                offset: 0,
                show: true,
                // ✅ 动态范围：floor(min) ~ ceil(max)+5
                min: qValues.length > 0 ? Math.floor(minQ) : undefined,
                max: qValues.length > 0 ? Math.ceil(maxQ) : undefined,
                splitLine: {
                    show: true,
                    lineStyle: {
                        type: 'solid',
                        color: '#e0e0e0'
                    }
                },
                axisTick: {
                    show: true
                },
                axisLabel: {
                    show: true,
                    formatter: '{value}',
                    color: '#9556a4'
                },
                axisLine: {
                    show: true,
                    lineStyle: {
                        color: '#6e7079',
                        width: 2
                    }
                },
                nameTextStyle: {
                    color: '#9556a4',
                    fontSize: 12
                }
            },
            {
                type: 'value',
                name: '水位(m)',
                position: 'left',
                offset: 60,
                show: false,
                // ✅ 动态范围：min-0.01 ~ max+0.04
                min: zValues.length > 0 ? minZ : undefined,
                max: zValues.length > 0 ? maxZ : undefined,
                splitLine: { show: false },
                axisTick: {
                    show: true
                },
                axisLabel: {
                    show: true,
                    // ✅ Y轴刻度保留两位小数（使用函数形式）
                    formatter: (value: any) => value.toFixed(2),
                    color: '#56c2e3'
                },
                axisLine: {
                    show: true,
                    lineStyle: {
                        color: '#6e7079',
                        width: 2
                    }
                },
                nameTextStyle: {
                    color: '#56c2e3',
                    fontSize: 12
                }
            },
            {
                type: 'value',
                name: '流速(m/s)',
                position: 'right',
                offset: 0,
                show: false,
                // ✅ 动态范围：min-0.2 ~ max+0.5
                min: vValues.length > 0 ? minV - 0.02 : undefined,
                max: vValues.length > 0 ? maxV + 0.02 : undefined,
                splitLine: { show: false },
                axisTick: {
                    show: true
                },
                axisLabel: {
                    show: true,
                    // ✅ Y轴刻度保留三位小数
                    formatter: (value: any) => value.toFixed(3),
                    color: '#78c300'
                },
                axisLine: {
                    show: true,
                    lineStyle: {
                        color: '#6e7079',
                        width: 2
                    }
                },
                nameTextStyle: {
                    color: '#78c300',
                    fontSize: 12
                }
            }
        ],

        // 系列配置（按期望顺序：流量、水位、流速）
        series: [

            {
                name: '流量(m³/s)',
                data: echartsData.value.map(item => item.q),
                type: 'line',
                smooth: true,
                // connectNulls: true,
                symbolSize: 3,
                symbol: 'circle',
                itemStyle: {
                    color: '#9556a4'
                },
                lineStyle: {
                    width: 2
                },
                yAxisIndex: 0
            },
            {
                name: '水位(m)',
                data: echartsData.value.map(item => item.z),
                type: 'line',
                smooth: true,
                // connectNulls: true,
                symbolSize: 3,
                symbol: 'circle',
                itemStyle: {
                    color: '#56c2e3'
                },
                lineStyle: {
                    width: 2
                },
                yAxisIndex: 1
            },
            {
                name: '流速(m/s)',
                data: echartsData.value.map(item => item.v),
                type: 'line',
                smooth: true,
                // connectNulls: true,
                symbolSize: 3,
                symbol: 'circle',
                itemStyle: {
                    color: '#78c300'
                },
                lineStyle: {
                    width: 2
                },
                yAxisIndex: 2
            },
        ]
    };

    // 保存配置引用
    echartOptionRef.value = setting;

    // 完全替换模式更新图表
    chartInstance.setOption(setting, true);

    // ✅ 初始化时应用动态布局算法，确保只有流量Y轴显示
    yAxisShowDynamic({
        '流量(m³/s)': true,
        '水位(m)': false,
        '流速(m/s)': false
    }, setting);

    // 再次应用调整后的配置
    chartInstance.setOption(setting, true);
};

// ==================== 生命周期钩子 ====================
onMounted(async () => {
    // 双重等待机制：nextTick + setTimeout
    await nextTick();
    setTimeout(() => {
        initChart();
        updateChart();
    }, 50);
});

onUnmounted(() => {
    // 销毁图表实例，防止内存泄漏
    if (chartInstance) {
        chartInstance.dispose();
        chartInstance = null;
    }
});
//获取水温监测下拉框
const getselsectData = async () => {
    let params = {
        "filter": {
            "logic": "and",
            "filters": [
                baseid.value != 'all' ? {
                    "field": "baseId",
                    "operator": "eq",
                    "dataType": "string",
                    "value": baseid.value
                } : null,
                {
                    "field": "fhstcd",
                    "operator": "isnotnull"
                },
                {
                    "logic": "or",
                    "filters": [
                        {
                            "field": "sttpCode",
                            "operator": "eq",
                            "dataType": "string",
                            "value": "ZQ"
                        }
                    ]
                }
            ].filter(Boolean)
        },
        "select": [
            "stcd",
            "stnm",
            "fhstcd",
            "fhstnm",
            "sttpCode"
        ]
    }
    let res = await msstbprptGetKendoList(params)
    console.log(res)
    if (!res?.data?.data) {

        select.value.value = ''
        select.value.options = []
        return
    }
    select.value.value = res.data.data[0].stcd
    select.value.options = res.data.data.map((item: any) => {
        return {
            label: item.stnm,
            value: item.stcd
        }
    })
    // debugger
};
const convertDateRange = (dateRange: string[]) => {
    if (!dateRange || dateRange.length !== 2) {
        return null;
    }
    // debugger

    const [startStr, endStr] = dateRange;

    // 获取今天的日期（日部分）
    const today = new Date();
    const currentDay = today.getDate();

    // 解析开始日期 YY-MM
    const [startYearStr, startMonthStr] = startStr.split('-');
    const startYear = parseInt(startYearStr);
    const startMonth = parseInt(startMonthStr);
    const fullStartYear = startYear < 100 ? 2000 + startYear : startYear;

    // 解析结束日期 YY-MM
    const [endYearStr, endMonthStr] = endStr.split('-');
    const endYear = parseInt(endYearStr);
    const endMonth = parseInt(endMonthStr);
    const fullEndYear = endYear < 100 ? 2000 + endYear : endYear;

    // 开始日期：基于第一个值的年月 + 今天的日期 + 00:00:00
    // 需要处理月份天数边界问题（如今天是31号，但2月只有28天）
    const startMonthLastDay = new Date(fullStartYear, startMonth, 0).getDate();
    const actualStartDay = Math.min(currentDay, startMonthLastDay);
    const startDate = `${fullStartYear}-${String(startMonth).padStart(2, '0')}-${String(actualStartDay).padStart(2, '0')} 00:00:00`;

    // 结束日期：基于第二个值的年月 + 今天的日期 + 23:59:59
    // 同样需要处理月份天数边界问题
    const endMonthLastDay = new Date(fullEndYear, endMonth, 0).getDate();
    const actualEndDay = Math.min(currentDay, endMonthLastDay);
    const endDate = `${fullEndYear}-${String(endMonth).padStart(2, '0')}-${String(actualEndDay).padStart(2, '0')} 23:59:59`;

    return {
        startDate,
        endDate
    };
};

/**
 * 加载图表数据
 * @param startDate 开始日期 (格式: YYYY-MM-DD HH:mm:ss)
 * @param endDate 结束日期 (格式: YYYY-MM-DD HH:mm:ss)
 * @param stcd 测站代码
 */
const getChartData = async (startDate: string, endDate: string, stcd: string) => {
    try {
        console.log('=== 开始加载图表数据 ===');
        console.log('请求参数:', { startDate, endDate, stcd });

        // 设置 loading 状态
        loading.value = true;
        hasData.value = false;

        const params = {
            "filter": {
                "logic": "and",
                "filters": [
                    {
                        "field": "DT",
                        "operator": "gte",
                        "value": startDate
                    },
                    {
                        "field": "DT",
                        "operator": "lte",
                        "value": endDate
                    },
                    {
                        "field": "stcd",
                        "operator": "eq",
                        "dataType": "string",
                        "value": stcd
                    }
                ]
            },
            "sort": [
                {
                    "field": "dt",
                    "dir": "asc"
                }
            ]
        };

        // 调用实际的API获取数据
        const res = await sdriverdaysGetKendoList(params);
        console.log('API返回结果:', res);

        let data = res?.data?.data || [];
        console.log('原始数据条数:', data.length);

        // 处理空数据情况
        if (!data || data.length === 0) {
            echartsData.value = [];
            hasData.value = false;
            await nextTick();
            updateChart();
            console.warn('未查询到水文数据');
            return;
        }

        // ✅ 数据预处理：验证字段存在性并转换类型
        const processedData = data
            .map(item => {
                // 验证必要字段
                if (!item.dt || typeof item.dt !== 'string') {
                    console.warn('无效的日期数据:', item);
                    return null;
                }

                // 确保数值类型
                const q = typeof item.q === 'number' ? item.q : parseFloat(item.q);
                const z = typeof item.z === 'number' ? item.z : parseFloat(item.z);
                const v = typeof item.v === 'number' ? item.v : parseFloat(item.v);

                if (isNaN(q) || isNaN(z) || isNaN(v)) {
                    console.warn('无效的水文数据:', item);
                    return null;
                }

                return {
                    dt: item.dt.split(' ')[0],  // 提取日期部分 "2026-05-03"
                    v: v,     // 确保数值类型
                    q: q,
                    z: z
                };
            })
            .filter(Boolean);  // 过滤掉无效数据

        console.log('处理后数据条数:', processedData.length);
        console.log('处理后数据示例:', processedData[0]);

        // ✅ 更新响应式数据
        echartsData.value = processedData;

        // 判断是否有数据
        hasData.value = echartsData.value.length > 0;
        console.log('hasData 设置为:', hasData.value);

        // ✅ 刷新图表（确保DOM更新后执行）
        await nextTick();
        updateChart();
        console.log('图表已更新');

    } catch (error) {
        console.error('获取图表数据失败:', error);
        hasData.value = false;
    } finally {
        // 关闭 loading 状态
        await nextTick();
        console.log('关闭 loading 状态');
        loading.value = false;
    }
};

const handlePanelChange1 = async (data) => {
    console.log('=== 用户交互触发 ===');
    console.log('当前所有控件状态:', data);
    // scopeDate: ['26-05', '26-06']
    // select: "0836000011"
    if (data.scopeDate && data.scopeDate.length > 0 && data.select) {
        console.log('参数验证通过，开始加载数据');
        // 转换日期格式并加载数据
        const dateRange = convertDateRange(data.scopeDate);
        if (dateRange) {
            console.log('日期转换结果:', dateRange);
            await getChartData(dateRange.startDate, dateRange.endDate, data.select);
        } else {
            console.error('日期转换失败');
        }
    } else {
        loading.value = false;
        hasData.value = false;
        // 清空图表数据
        echartsData.value = [];
        // 更新图表显示空状态
        await nextTick();
        updateChart();
        console.warn('参数不完整:', {
            scopeDate: data.scopeDate,
            select: data.select
        });
    }
}
watch(
    () => JidiSelectEventStore.selectedItem,
    (newVal) => {
        baseid.value = newVal.wbsCode;
        getselsectData()
    },
    { deep: true, immediate: true }
);
</script>

<style lang="scss" scoped>
.chart-wrapper {
    width: 100%;
    height: 231px;
    min-height: 231px;
    position: relative;
    /* 为empty-overlay提供定位上下文 */

    .echarts-chart {
        width: 100% !important;
        height: 100% !important;
        min-width: 100%;
        min-height: 231px;
    }

    .empty-overlay {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        background: rgba(255, 255, 255);
        z-index: 10;
    }
}
</style>