/**
 * 异常检测图表视觉语义（前端全场图 + 报告共用）
 *
 * 原则：
 * - 颜色优先表达诊断结论，不用彩虹色表达大量风机编号
 * - 异常同时使用红色、菱形和更高层级，避免只依赖颜色
 * - 连续变量使用感知均匀、色盲友好的 Viridis 色带
 */

export const DIAGNOSTIC_COLORS = {
  normal: "#2E90FA",
  anomaly: "#F04438",
  warning: "#F79009",
  reference: "#98A2B3",
  mean: "#7F56D9",
  blade1: "#2E90FA",
  blade2: "#12B76A",
  blade3: "#7F56D9",
};

export const DIAGNOSTIC_CATEGORICAL_COLORS = [
  "#2E90FA",
  "#12B76A",
  "#F79009",
  "#7F56D9",
  "#06AED4",
  "#EE46BC",
  "#6172F3",
  "#47CD89",
  "#FDB022",
  "#84ADFF",
];

/** 全场总图：正常风机冷色，异常风机红橙暖色；同组内用不同色相区分机组 */
export const FARM_NORMAL_COOL_COLORS = Object.freeze([
  "#3B82F6",
  "#06B6D4",
  "#0EA5E9",
  "#2563EB",
  "#14B8A6",
  "#6366F1",
  "#38BDF8",
  "#0D9488",
]);

export const FARM_ANOMALY_WARM_COLORS = Object.freeze([
  "#F04438",
  "#F97316",
  "#EF4444",
  "#FB7185",
  "#EA580C",
  "#E11D48",
  "#F59E0B",
  "#DC2626",
]);

export const DIAGNOSTIC_CONTINUOUS_COLORS = [
  "#440154",
  "#3B528B",
  "#21918C",
  "#5EC962",
  "#FDE725",
];

export const DIAGNOSTIC_FARM_STYLES = Object.freeze({
  normal: Object.freeze({
    pointOpacity: 0.5,
    lineWidth: 1,
    lineOpacity: 0.5,
    z: 1,
  }),
  anomaly: Object.freeze({
    pointOpacity: 1,
    lineWidth: 2.4,
    lineOpacity: 1,
    z: 20,
  }),
  category: Object.freeze({
    pointOpacity: 0.88,
    lineWidth: 1.8,
    lineOpacity: 1,
    z: 2,
  }),
});

function seriesText(rowOrLabel) {
  if (rowOrLabel && typeof rowOrLabel === "object") {
    return `${rowOrLabel.originalLabel || ""} ${rowOrLabel.label || ""}`;
  }
  return String(rowOrLabel || "");
}

export function classifyDiagnosticSeries(rowOrLabel) {
  const text = seriesText(rowOrLabel);
  if (/桨叶\s*1/.test(text)) return "blade1";
  if (/桨叶\s*2/.test(text)) return "blade2";
  if (/桨叶\s*3/.test(text)) return "blade3";
  if (/异常/.test(text) && !/正常/.test(text)) return "anomaly";
  if (/上限|下限|阈值|警戒|频繁/.test(text)) return "warning";
  if (/均值|平均|趋势/.test(text)) return "mean";
  if (/参考|理论|合同|基准|标准/.test(text) || rowOrLabel?.__shared) {
    return "reference";
  }
  if (/正常/.test(text)) return "normal";
  return "category";
}

export function diagnosticSeriesColor(rowOrLabel, index = 0) {
  const role = classifyDiagnosticSeries(rowOrLabel);
  if (DIAGNOSTIC_COLORS[role]) return DIAGNOSTIC_COLORS[role];
  const safeIndex = Math.abs(Number(index) || 0);
  return DIAGNOSTIC_CATEGORICAL_COLORS[
    safeIndex % DIAGNOSTIC_CATEGORICAL_COLORS.length
  ];
}

function paletteIndexOf(rowOrLabel, index = 0) {
  const turbineIndex = Number(rowOrLabel?.turbineIndex);
  if (Number.isFinite(turbineIndex)) return Math.abs(turbineIndex);
  return Math.abs(Number(index) || 0);
}

function turbineAnomalyFlag(rowOrLabel) {
  if (!rowOrLabel || typeof rowOrLabel !== "object") return null;
  if (typeof rowOrLabel.extra?.anomaly === "boolean") return rowOrLabel.extra.anomaly;
  if (typeof rowOrLabel.anomaly === "boolean") return rowOrLabel.anomaly;
  return null;
}

/**
 * 全场总图是否按「异常风机」上色。
 * 降载图正常/异常是同一台机的点，颜色仍跟风机走，点形再区分状态。
 */
export function isFarmAnomalyTurbine(rowOrLabel, templateKey = "") {
  const flagged = turbineAnomalyFlag(rowOrLabel);
  if (typeof flagged === "boolean") return flagged;
  if (templateKey === "ctrl_deload") return false;
  return classifyDiagnosticSeries(rowOrLabel) === "anomaly";
}

export function farmStatusPaletteColor(
  rowOrLabel,
  index = 0,
  templateKey = "",
) {
  const palette = isFarmAnomalyTurbine(rowOrLabel, templateKey)
    ? FARM_ANOMALY_WARM_COLORS
    : FARM_NORMAL_COOL_COLORS;
  return palette[paletteIndexOf(rowOrLabel, index) % palette.length];
}

/**
 * 全场图颜色语义：
 * - 正常风机冷色、异常风机红橙暖色，组内再按机组区分；
 * - 降载图颜色跟风机，点形区分正常/异常点；
 * - 参考 / 阈值 / 均值保持语义色。
 */
export function diagnosticFarmSeriesColor(
  rowOrLabel,
  index = 0,
  templateKey = "",
) {
  const role = classifyDiagnosticSeries(rowOrLabel);
  if (role === "reference" || role === "warning" || role === "mean") {
    return diagnosticSeriesColor(rowOrLabel, index);
  }
  return farmStatusPaletteColor(rowOrLabel, index, templateKey);
}

export function diagnosticFarmSymbolSize(
  rowOrLabel,
  pointCount = 0,
  templateKey = "",
) {
  const role = classifyDiagnosticSeries(rowOrLabel);
  if (role === "anomaly") return 14;
  if (role === "normal") return 7;
  if (templateKey === "pitch_coord") return pointCount > 800 ? 12 : 14;
  return pointCount > 500 ? 10 : 12;
}

export function diagnosticFarmStyle(rowOrLabel) {
  const role = classifyDiagnosticSeries(rowOrLabel);
  return (
    DIAGNOSTIC_FARM_STYLES[role] ||
    DIAGNOSTIC_FARM_STYLES.category
  );
}

export function diagnosticBladeStyle(rowOrLabel) {
  const role = classifyDiagnosticSeries(rowOrLabel);
  if (role === "blade1") {
    return { symbol: "rect", lineType: "dashed", showSymbol: true };
  }
  if (role === "blade2") {
    return { symbol: "circle", lineType: "solid", showSymbol: true };
  }
  if (role === "blade3") {
    return { symbol: "triangle", lineType: "dotted", showSymbol: true };
  }
  return null;
}

export function diagnosticSeriesSymbol(rowOrLabel, fallback = "circle") {
  const role = classifyDiagnosticSeries(rowOrLabel);
  if (role === "anomaly") return "diamond";
  if (role === "blade1") return "rect";
  if (role === "blade2") return "circle";
  if (role === "blade3") return "triangle";
  return fallback;
}

export function diagnosticLineType(rowOrLabel) {
  const role = classifyDiagnosticSeries(rowOrLabel);
  if (role === "warning" || role === "reference" || role === "mean") {
    return "dashed";
  }
  if (role === "blade1") return "dashed";
  if (role === "blade3") return "dotted";
  return "solid";
}