function getRowColorbar(row) {
  return Array.isArray(row?.colorbar)
    ? row.colorbar
    : Array.isArray(row?.colorBar)
      ? row.colorBar
      : [];
}

function getRowColorbarTitle(row) {
  return row?.colorbarTitle || row?.colorbartitle || "";
}

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

/**
 * 将变桨协调的桨距角色带图合并为正常/异常系列。
 * 只重组系列，不抽样任何坐标点。
 */
export function mergePitchColorFarmRows(rows = [], useTimeData = false) {
  const groups = new Map();
  rows.forEach((row) => {
    const key = pitchColorFarmKind(row);
    const prev = groups.get(key);
    const xData = [...(prev?.xData || []), ...(row?.xData || [])];
    const yData = [...(prev?.yData || []), ...(row?.yData || [])];
    const colorbar = [
      ...(prev?.colorbar || []),
      ...getRowColorbar(row),
    ];
    const len = Math.min(xData.length, yData.length);
    groups.set(key, {
      ...row,
      label: key,
      originalLabel: key,
      extra: undefined,
      pointData: undefined,
      xData: xData.slice(0, len),
      yData: yData.slice(0, len),
      timeData: useTimeData ? xData.slice(0, len) : [],
      colorbar: colorbar.slice(0, len),
      colorbarTitle:
        getRowColorbarTitle(row) ||
        prev?.colorbarTitle ||
        "桨距角 (°)",
      turbineIndex: undefined,
    });
  });
  return [...groups.values()];
}