import { basinKeyMap } from "../model/map-data";
export interface PplLengthContent {
  zoneNm: string;
  sumPrlgVl: number;
  usgCd?: string;
  yearGroup?: string;
}

export interface SewerageService {
  getPplLength(ymdFrom: string, ymdTo: string, useCd: string): Promise<PplLengthContent[]>;
  getPplUseLength(ymdFrom: string, ymdTo: string, useCd: string): Promise<PplLengthContent[]>;
  getMvUsgPplLength(): Promise<PplLengthContent[]>;
  getMvOldPplLength(): Promise<PplLengthContent[]>;
}

export interface ChartDataSet {
  label: string;
  data: (number | undefined)[];
  backgroundColor: string;
  borderRadius?: number;
}
export interface OldPplChartData {
  labels: string[];
  datasets: ChartDataSet[];
}

type SnOldPplItem = {
  name: string;
  colTitle: string[];
  rows: number[];
};

type SnOldPplLength = {
  [key: string]: SnOldPplItem;
};

export type mapPplOldItem = {
  name: string;
  totalLen: number;
  pplLen2025: number;
  pplLen2530: number;
  pplLen30: number;
};

export type mapPplOldType = {
  colTitle: {
    totalLen: string; // 총길이
    pplLen2025: string;  // 20~25년
    pplLen2530: string;  // 25~30년
    pplLen30: string;  // 30년 이상
  };
  data: mapPplOldItem[];
};


export function buildSnOldPplLength(
  chartData: {
    labels: string[];
    datasets: { label: string; data: number[] }[];
  },
  totalLengths: number[]
): SnOldPplLength {
  const colTitle = ["총길이", ...chartData.datasets.map((ds) => ds.label)];

  const result: SnOldPplLength = {};

  chartData.labels.forEach((basinName, index) => {
    const key = basinKeyMap[basinName]; // geum, han, nakdong, yeongsan
    if (!key) return; // 매핑 안되면 스킵
    const total = totalLengths[index] ?? 0;
    const datasetValues = chartData.datasets.map(
      (ds) => ds.data[index] ?? 0,
    );
    result[key] = {
      name: basinName,
      colTitle,
      rows: [
        total,          // 총길이 (undefined면 0)
        ...datasetValues, // 각 연차 데이터 (undefined면 0)
      ],
    };
  });

  return result;
}