/**
 * 风功率曲线 / 风功率散点 — 全场 3D 图表（前端 + 报告 Node 共用）
 * 展示坐标：X = 风机机位，Y = 风速，Z = 功率（竖直）
 * 原始 panel 数据仍为 xData=风速、yData=功率
 */
import {
  classifyDiagnosticSeries,
  diagnosticSeriesColor,
} from "./anomalyDiagnosticVisual.mjs";

export const WIND_POWER_3D_TEMPLATE_KEYS = new Set([
  "wind_power_curve",
  "wind_power_scatter",
]);

export const WIND_POWER_3D_AXIS = {
  x: "风机机位",
  y: "风速 (m/s)",
  z: "有功功率 (kW)",
};

/** 参考图视角：功率轴竖直，风机与风速轴分别向左、右前方展开 */
const REFERENCE_VIEW_CONTROL = {
  alpha: 25,
  beta: 45,
  center: [0, -4, 0],
};

/** Y 轴（机组）最多展示的名称数（折线/散点数据仍全部绘制） */
export const FARM_WIND_POWER_3D_TURBINE_LABEL_COUNT = 8;

/** 机组在 Y 轴上的间距（数值越大，各风机切片越分开） */
const TURBINE_Y_GAP = 10;

/** 全场 3D 渐变色：提高饱和度与明度，避免深色底上看不清 */
function farmTurbineGradientColor(turbineIndex, maxIndex, isAnomaly = false) {
  const t =
    maxIndex <= 1 ? 0 : Math.max(0, Math.min(1, (turbineIndex - 1) / (maxIndex - 1)));
  const hue = 88 + t * 172;
  if (isAnomaly) return `hsla(${hue}, 92%, 64%, 1)`;
  return `hsla(${hue}, 88%, 66%, 1)`;
}

function isAnomalyRow(row) {
  const text = `${row?.originalLabel || ""} ${row?.label || ""}`;
  return /异常/.test(text) && !/正常/.test(text);
}

function resolveFarmSeriesColor(row, index, turbineMeta, pickColor, farmMode) {
  if (!farmMode) return pickColor(row.label, index, row, farmMode);
  const role = classifyDiagnosticSeries(row);
  if (role === "reference" || role === "warning" || role === "mean") {
    return diagnosticSeriesColor(row, index);
  }
  if (typeof pickColor === "function") {
    return pickColor(row.label, index, row, farmMode);
  }
  const ti = resolveTurbineIndex(row, turbineMeta);
  return farmTurbineGradientColor(ti, turbineMeta.maxIndex, role === "anomaly");
}

function resolveFarmSeriesVisual(row, templateKey, turbineMax, reportMode) {
  const isRef = isReferenceLineRow(row);
  const isScatter = !isRef && isMarkerRow(row, templateKey);
  const isAnomaly = isAnomalyRow(row);
  const dense = turbineMax > 10;

  if (isRef) {
    return {
      lineWidth: 2.2,
      lineOpacity: 1,
      lineType: "dashed",
      itemOpacity: 1,
      symbolSize: 3,
    };
  }
  if (isScatter) {
    return {
      lineWidth: 1,
      lineOpacity: 1,
      lineType: "solid",
      itemOpacity: dense ? (isAnomaly ? 0.95 : 0.82) : 0.95,
      symbolSize: dense ? (isAnomaly ? 6.5 : 5.5) : 7,
    };
  }
  return {
    lineWidth: dense ? (reportMode ? 2 : 1.9) : 2.4,
    lineOpacity: isAnomaly ? 1 : dense ? 0.92 : 0.98,
    lineType: "solid",
    itemOpacity: isAnomaly ? 1 : 0.92,
    symbolSize: 3,
  };
}

function buildAxisSplitStyle(splitColor, show = true) {
  return {
    show,
    lineStyle: { color: splitColor, type: "solid", opacity: show ? 0.35 : 0 },
  };
}

export function isWindPower3DTemplate(templateKey) {
  return WIND_POWER_3D_TEMPLATE_KEYS.has(String(templateKey || ""));
}

/** 仅全场（farmMode）风功率曲线/散点使用 3D，单机保持 2D */
export function shouldUseWindPower3D(templateKey, farmMode = false) {
  return Boolean(farmMode) && isWindPower3DTemplate(templateKey);
}

function getRowArrays(row) {
  const xData = Array.isArray(row?.xData) ? row.xData : [];
  const yData = Array.isArray(row?.yData) ? row.yData : [];
  const zData = Array.isArray(row?.zData) ? row.zData : [];
  return { xData, yData, zData };
}

function formatEngineLabel(name) {
  if (name == null || name === "") return "";
  const text = String(name);
  if (/号$/.test(text)) return text;
  if (/^\d+$/.test(text)) return `${text}号`;
  return text;
}

function resolveTurbineName(row) {
  if (row?.engineName) return formatEngineLabel(row.engineName);
  const label = String(row?.label || "");
  const head = label.split(/\s+/)[0] || "";
  if (/号/.test(head) || /^\d+$/.test(head)) return formatEngineLabel(head);
  return head;
}

function buildTurbineAxisMeta(rows = []) {
  const nameToIndex = new Map();
  let maxIndex = 0;

  rows.forEach((row) => {
    if (isReferenceLineRow(row)) return;
    const name = resolveTurbineName(row);
    let turbineIndex =
      row?.turbineIndex != null && Number.isFinite(Number(row.turbineIndex))
        ? Number(row.turbineIndex) + 1
        : null;
    if (turbineIndex == null && name) {
      if (!nameToIndex.has(name)) {
        maxIndex += 1;
        nameToIndex.set(name, maxIndex);
      }
      turbineIndex = nameToIndex.get(name);
    }
    if (turbineIndex != null) {
      maxIndex = Math.max(maxIndex, turbineIndex);
      if (name) nameToIndex.set(name, turbineIndex);
    }
  });

  const indexToName = new Map();
  nameToIndex.forEach((index, name) => indexToName.set(index, name));

  return { maxIndex, indexToName, nameToIndex };
}

function resolveTurbineIndex(row, meta) {
  if (row?.turbineIndex != null && Number.isFinite(Number(row.turbineIndex))) {
    return Number(row.turbineIndex) + 1;
  }
  const name = resolveTurbineName(row);
  if (name && meta.nameToIndex.has(name)) return meta.nameToIndex.get(name);
  return 1;
}

/** ECharts 3D 坐标：[机组位置, 风速, 功率] */
function toChartPoint(windSpeed, power, turbineIndex) {
  return [turbineIndex * TURBINE_Y_GAP, windSpeed, power];
}

function resolveTurbineIndexFromPosition(position) {
  return Math.round(Number(position) / TURBINE_Y_GAP);
}

function resolveFarmTriplets(row, meta) {
  const { xData, yData, zData } = getRowArrays(row);
  const powerArr = zData.length ? zData : yData;
  const turbineIndex = resolveTurbineIndex(row, meta);
  const len = Math.min(xData.length, powerArr.length);
  const triplets = [];
  for (let i = 0; i < len; i += 1) {
    const windSpeed = Number(xData[i]);
    const power = Number(powerArr[i]);
    if (!Number.isFinite(windSpeed) || !Number.isFinite(power)) continue;
    triplets.push(toChartPoint(windSpeed, power, turbineIndex));
  }
  return triplets;
}

function isReferenceLineRow(row) {
  if (row?.__shared) return true;
  const text = `${row?.originalLabel || ""} ${row?.label || ""}`;
  return /参考功率|理论功率|合同功率|参考曲线/.test(text);
}

function isMarkerRow(row, templateKey) {
  if (isReferenceLineRow(row)) return false;
  if (templateKey === "wind_power_curve") return false;
  if (templateKey === "wind_power_scatter") return true;
  const mode = String(row?.mode || "lines");
  return mode.includes("markers") && !mode.includes("lines");
}

function buildReferenceLineTriplets(row) {
  const { xData, yData, zData } = getRowArrays(row);
  const powerArr = zData.length ? zData : yData;
  const len = Math.min(xData.length, powerArr.length);
  const triplets = [];
  for (let i = 0; i < len; i += 1) {
    const windSpeed = Number(xData[i]);
    const power = Number(powerArr[i]);
    if (!Number.isFinite(windSpeed) || !Number.isFinite(power)) continue;
    triplets.push(toChartPoint(windSpeed, power, 0));
  }
  return triplets;
}

function formatTurbineAxisLabel(index, indexToName) {
  if (index === 0) return "参考";
  return indexToName.get(index) || `${index}号`;
}

/** 机组较多时 Y 轴仅抽样展示名称，避免标签重叠 */
function buildTurbineAxisLabelConfig(maxIndex, indexToName, hasReference) {
  const labeledIndex = new Set();
  if (hasReference) labeledIndex.add(0);

  if (maxIndex <= FARM_WIND_POWER_3D_TURBINE_LABEL_COUNT) {
    for (let index = 1; index <= maxIndex; index += 1) labeledIndex.add(index);
  } else {
    labeledIndex.add(1);
    labeledIndex.add(maxIndex);
    const slots = FARM_WIND_POWER_3D_TURBINE_LABEL_COUNT - labeledIndex.size;
    const step = Math.max(1, Math.round((maxIndex - 1) / (slots + 1)));
    for (let index = 1 + step; index < maxIndex; index += step) {
      labeledIndex.add(index);
      if (labeledIndex.size >= FARM_WIND_POWER_3D_TURBINE_LABEL_COUNT) break;
    }
  }

  const labelInterval = TURBINE_Y_GAP;

  return {
    interval: labelInterval,
    labeledIndex,
    formatter(v) {
      const position = Number(v);
      if (!Number.isFinite(position)) return "";
      const index = resolveTurbineIndexFromPosition(position);
      if (index < 0 || index > maxIndex) return "";
      if (Math.abs(position - index * TURBINE_Y_GAP) > 0.01) return "";
      if (!labeledIndex.has(index)) return "";
      return formatTurbineAxisLabel(index, indexToName);
    },
  };
}

function computePlotExtents(series = []) {
  let windMin = Infinity;
  let windMax = -Infinity;
  let powerMax = 0;

  series.forEach((item) => {
    (item.data || []).forEach((point) => {
      if (!Array.isArray(point) || point.length < 3) return;
      const [, windSpeed, power] = point;
      if (Number.isFinite(windSpeed)) {
        windMin = Math.min(windMin, windSpeed);
        windMax = Math.max(windMax, windSpeed);
      }
      if (Number.isFinite(power)) {
        powerMax = Math.max(powerMax, power);
      }
    });
  });

  if (!Number.isFinite(windMin) || !Number.isFinite(windMax)) {
    windMin = 0;
    windMax = 25;
  }
  if (powerMax <= 0) powerMax = 2000;

  const windPad = Math.max(0.5, (windMax - windMin) * 0.04);
  const powerPad = Math.max(50, powerMax * 0.06);

  return {
    windMin: Math.max(0, windMin - windPad),
    windMax: windMax + windPad,
    powerMax: powerMax + powerPad,
  };
}

function resolveWindSpeedAxisName(panel) {
  const name = String(panel?.xaxis || "").trim();
  if (/风速/.test(name)) return name;
  return WIND_POWER_3D_AXIS.y;
}

function resolvePowerAxisName(panel) {
  const name = String(panel?.yaxis || "").trim();
  if (/功率/.test(name)) return name;
  return WIND_POWER_3D_AXIS.z;
}

function buildGrid3DLayout({
  hasLegend,
  hasSubtitle,
  reportMode,
}) {
  const titleBlock = hasSubtitle ? 50 : 40;

  return {
    boxWidth: reportMode ? 96 : 108,
    boxHeight: reportMode ? 88 : 96,
    boxDepth: reportMode ? 158 : 176,
    top: titleBlock,
    left: hasLegend ? 18 : "5%",
    right: hasLegend ? 112 : "5%",
    bottom: 72,
    viewControl: {
      projection: "orthographic",
      autoRotate: false,
      distance: reportMode ? 225 : 218,
      orthographicSize: reportMode ? 215 : 150,
      alpha: REFERENCE_VIEW_CONTROL.alpha,
      beta: REFERENCE_VIEW_CONTROL.beta,
      minAlpha: 8,
      maxAlpha: 62,
      rotateSensitivity: 1,
      zoomSensitivity: 1,
      panSensitivity: 0.8,
      center: [...REFERENCE_VIEW_CONTROL.center],
    },
  };
}

function defaultPickColor(label, index) {
  const palette = ["#1E7CF8", "#7C5CFF", "#16A34A", "#F59E0B", "#EF4444"];
  const text = String(label || "");
  if (/参考|合同|理论/.test(text)) return "#64748B";
  if (/异常/.test(text) && !/正常/.test(text)) return "#EF4444";
  if (/正常/.test(text)) return "#1E7CF8";
  return palette[index % palette.length];
}

/**
 * @param {object} params
 * @param {object} params.panel - { title, xaxis, yaxis, data }
 * @param {string} params.templateKey
 * @param {string} [params.title]
 * @param {boolean} [params.farmMode]
 * @param {function} [params.pickColor]
 * @param {object} [params.theme]
 * @param {boolean} [params.reportMode] - 报告白底样式
 */
export function buildWindPower3DChartOption({
  panel,
  templateKey,
  title = "",
  farmMode = false,
  pickColor = defaultPickColor,
  theme = {},
  reportMode = false,
}) {
  const rows = panel?.data || [];
  const turbineMeta = buildTurbineAxisMeta(rows);
  const turbineMax = Math.max(turbineMeta.maxIndex, 1);
  const turbineSeries = [];
  const referenceSeries = [];
  const legendNames = [];

  rows.forEach((row, index) => {
    const color = resolveFarmSeriesColor(
      row,
      index,
      turbineMeta,
      pickColor,
      farmMode,
    );
    const visual = resolveFarmSeriesVisual(row, templateKey, turbineMax, reportMode);

    if (isReferenceLineRow(row)) {
      const data = buildReferenceLineTriplets(row);
      if (!data.length) return;
      referenceSeries.push({
        name: row.label,
        type: "line3D",
        data,
        lineStyle: {
          width: visual.lineWidth,
          color,
          type: visual.lineType,
          opacity: visual.lineOpacity,
        },
        itemStyle: { color, opacity: visual.itemOpacity },
      });
      legendNames.push(row.label);
      return;
    }

    const triplets = resolveFarmTriplets(row, turbineMeta);
    if (!triplets.length) return;

    const useScatter = isMarkerRow(row, templateKey);
    const plotData = useScatter
      ? triplets
      : [...triplets].sort((a, b) => a[1] - b[1]);
    const item = {
      name: row.label,
      type: useScatter ? "scatter3D" : "line3D",
      data: plotData,
      shading: "color",
      symbolSize: visual.symbolSize,
      lineStyle: useScatter
        ? undefined
        : {
            width: visual.lineWidth,
            color,
            type: visual.lineType,
            opacity: visual.lineOpacity,
          },
      itemStyle: { color, opacity: visual.itemOpacity },
    };
    turbineSeries.push(item);
    legendNames.push(row.label);
  });

  const series = [...turbineSeries, ...referenceSeries];

  const plotExtents = computePlotExtents(series);
  const axisColor = theme.axis || (reportMode ? "#64748b" : "#8da3c7");
  const legendColor = theme.legend || (reportMode ? "#334155" : "#cde6ff");
  const titleColor = theme.title || (reportMode ? "#0f172a" : "#e3f2ff");
  const splitColor = theme.split || (reportMode ? "#e2e8f0" : "rgba(98, 121, 186, 0.16)");
  const bg = reportMode ? "#ffffff" : "transparent";
  const legendData = legendNames;
  const hasLegend = legendData.length > 1;
  const chartTitle = title || panel?.title || "";
  const chartSubtitle =
    farmMode && turbineMax > 8 && !reportMode ? `共 ${turbineMax} 台机组` : "";
  const hasReference = rows.some(isReferenceLineRow);
  const turbineAxisMax = (hasReference ? turbineMax + 0.5 : turbineMax) * TURBINE_Y_GAP;
  const turbineAxisLabel = buildTurbineAxisLabelConfig(
    turbineMax,
    turbineMeta.indexToName,
    hasReference,
  );
  const grid3DLayout = buildGrid3DLayout({
    hasLegend,
    hasSubtitle: Boolean(chartSubtitle),
    reportMode,
  });

  return {
    backgroundColor: bg,
    animation: reportMode ? false : true,
    animationDuration: reportMode ? 0 : undefined,
    title: chartTitle
      ? {
          text: chartTitle,
          subtext: chartSubtitle,
          left: "center",
          top: reportMode ? 8 : 4,
          textStyle: {
            fontSize: reportMode ? 13 : 12,
            color: titleColor,
            fontWeight: reportMode ? 600 : 500,
          },
          subtextStyle: {
            fontSize: 10,
            color: axisColor,
            opacity: 0.82,
          },
          itemGap: chartSubtitle ? 4 : 8,
        }
      : undefined,
    toolbox: reportMode
      ? undefined
      : {
          show: true,
          top: 4,
          right: hasLegend ? 112 : 12,
          itemSize: 14,
          itemGap: 10,
          iconStyle: {
            borderColor: axisColor,
          },
          emphasis: {
            iconStyle: {
              borderColor: titleColor,
            },
          },
          feature: {
            restore: {
              show: true,
              title: "还原视角",
            },
            saveAsImage: {
              show: true,
              title: "保存图片",
              name: chartTitle || "全场风功率图",
              backgroundColor: "#0f172a",
              pixelRatio: 2,
            },
          },
        },
    tooltip: {
      show: true,
      formatter(params) {
        if (!params) return "";
        const val = params.value || params.data;
        if (!Array.isArray(val)) return "";
        const [turbinePosition, windSpeed, power] = val;
        const turbineText = formatTurbineAxisLabel(
          resolveTurbineIndexFromPosition(turbinePosition),
          turbineMeta.indexToName,
        );
        return `${params.marker || ""}${params.seriesName || ""}<br/>${WIND_POWER_3D_AXIS.y}: ${windSpeed}<br/>${WIND_POWER_3D_AXIS.x}: ${turbineText}<br/>${WIND_POWER_3D_AXIS.z}: ${power}`;
      },
    },
    legend: hasLegend
      ? {
          type: "scroll",
          orient: "vertical",
          right: reportMode ? 4 : 0,
          top: chartTitle ? (reportMode ? 40 : 36) : 12,
          bottom: 8,
          width: 96,
          itemWidth: 12,
          itemHeight: 8,
          itemGap: 5,
          pageButtonItemGap: 6,
          pageIconSize: 10,
          textStyle: { color: legendColor, fontSize: 10 },
          data: legendData,
        }
      : undefined,
    grid3D: {
      ...grid3DLayout,
      light: {
        main: { intensity: 1.35, shadow: reportMode, alpha: 35, beta: 120 },
        ambient: { intensity: 0.92 },
      },
    },
    xAxis3D: {
      type: "value",
      name: WIND_POWER_3D_AXIS.x,
      min: 0,
      max: turbineAxisMax,
      interval: turbineAxisLabel.interval,
      nameGap: 28,
      nameTextStyle: { color: axisColor, fontSize: 10 },
      axisLabel: {
        color: axisColor,
        fontSize: 9,
        hideOverlap: true,
        showMinLabel: true,
        showMaxLabel: true,
        margin: 4,
        formatter: turbineAxisLabel.formatter,
      },
      axisLine: { lineStyle: { color: splitColor, opacity: 0.65 } },
      splitLine: buildAxisSplitStyle(splitColor, true),
    },
    yAxis3D: {
      type: "value",
      name: resolveWindSpeedAxisName(panel),
      min: plotExtents.windMin,
      max: plotExtents.windMax,
      splitNumber: 5,
      nameGap: 22,
      nameTextStyle: { color: axisColor, fontSize: 10, fontWeight: 500 },
      axisLabel: { color: axisColor, fontSize: 9, margin: 4 },
      axisLine: { lineStyle: { color: splitColor, opacity: 0.8 } },
      splitLine: buildAxisSplitStyle(splitColor, true),
    },
    zAxis3D: {
      type: "value",
      name: resolvePowerAxisName(panel),
      min: 0,
      max: plotExtents.powerMax,
      splitNumber: 5,
      nameGap: 24,
      nameTextStyle: { color: axisColor, fontSize: 10, fontWeight: 500 },
      axisLabel: { color: axisColor, fontSize: 9, margin: 4 },
      axisLine: { lineStyle: { color: splitColor, opacity: 0.8 } },
      splitLine: buildAxisSplitStyle(splitColor, true),
    },
    series,
  };
}

export function buildWindPower3DPanelOption(panel, options = {}) {
  return buildWindPower3DChartOption({
    panel,
    templateKey: options.templateKey || "",
    title: options.title || panel?.title || "",
    farmMode: Boolean(options.farmMode),
    pickColor: options.pickColor,
    theme: options.theme || {},
    reportMode: Boolean(options.reportMode),
  });
}