/* =============================================================================
 * B08_Quantity_UI_Earthwork.ts
 * 토공 탭(PLAN 61-3 · 69-2 · 69-3) — 보조 탭 넷 = 토공집계표 · 토적표 · 평균운반거리 · 종방향 무대운반거리.
 *
 *   GET …/quantity/earthwork 한 번(서버 단독 · 읽기만) — 네 장이 같은 응답을 나눠 그림.
 *   토적표 = 줄 측점 · 칸 = 사용자 견본(절토 토사 · 연암 · 측구파기 토사 · 암 각 단면적 · 입적 ·
 *   보정량 · 보정량계 · 성토 · 유용토 · 차인토량 · 누가토량 · 면고르기 · 지장목제거 · 제근 · 노면정리 각
 *   거리 · 면적) · 맨 아래 합계 줄. 첫 측점은 앞이 없어 입적 · 면적이 빈 값(—).
 *   표 = 공용 많은 자료 표(`ui_template_data_table` · PLAN 70) · 카드 안 · 나머지 셋은 `…_Earthwork_Sheets`.
 * ========================================================================== */

import { API_BASE_URL } from "@config/config_frontend";
import { createButton, createCard } from "@ui/ui_template_elements";
import { createDataTable, type DataColumn, type DataRow } from "@ui/ui_template_data_table";
import { stationLabel } from "../common_util/common_util_station";
import { stationInterval } from "./B08_Quantity_UI_Summary";
import {
  renderEarthworkSummary,
  renderFreeHaul,
  renderHaulDistance,
} from "./B08_Quantity_UI_Earthwork_Sheets";

type Face = { length_m: number | null; area_m2: number | null };

interface EarthworkRow {
  chainage_m: number;
  distance_m: number;
  cut_soil_area_m2: number;
  cut_soil_volume_m3: number;
  cut_soil_adjusted_m3: number;
  cut_rock_area_m2: number;
  cut_rock_volume_m3: number;
  cut_rock_adjusted_m3: number;
  cut_rock_kind: string;
  ditch_soil_area_m2: number;
  ditch_soil_volume_m3: number;
  ditch_soil_adjusted_m3: number;
  ditch_rock_area_m2: number;
  ditch_rock_volume_m3: number;
  ditch_rock_adjusted_m3: number;
  adjusted_total_m3: number;
  fill_area_m2: number;
  fill_volume_m3: number;
  diverted_m3: number;
  balance_m3: number;
  cumulative_m3: number;
  notes: string[];
  faces: Record<string, Face>;
}

export interface HaulRow {
  q: number;
  l: number;
  ql: number;
}

export interface HaulList {
  rows: HaulRow[];
  q: number;
  ql: number;
  average_m: number | null;
}

export interface SummaryRow {
  group: string;
  kind: string;
  spec: string;
  unit: string;
  value: number | null;
  note: string;
}

export interface EarthworkTable {
  rows: EarthworkRow[];
  totals: Record<string, number>;
  conversion_factors: Record<string, { compacted: number }>;
  station_count: number;
  route_id: number;
  confirmed: boolean;
  summary: SummaryRow[];
  haul: Record<"dump_truck" | "dozer" | "free_haul", HaulList>;
  haul_saved: boolean;
}

/** 칸 묶음 — [머리 묶음, 키 앞머리, 풍선 글] · 단면적 · 입적 · 보정량 셋 · 머리 글자는 사용자 견본대로 */
const TRIPLES: Array<[string[], string, string?]> = [
  [["절토", "토사"], "cut_soil"],
  [["절토", "연암"], "cut_rock"],
  [["측구파기", "토사"], "ditch_soil"],
  [["측구파기", "암"], "ditch_rock", "리핑암 · 발파암 합"],
];
/** 면 계열 — [머리 묶음, 키] · 거리 · 면적 둘 */
const FACES: Array<[string[], string]> = [
  [["면고르기", "성토면"], "grading_fill"],
  [["면고르기", "절토면"], "grading_cut"],
  [["지장목제거", "성토"], "tree_removal_fill"],
  [["지장목제거", "절토"], "tree_removal_cut"],
  [["제근"], "grubbing"],
  [["노면정리"], "road_surface"],
];

const n2 = (key: string, label: string, group?: string[]): DataColumn => ({
  key,
  label,
  group,
  kind: "number",
  decimals: 2,
});

/** 견본 차례 32칸 */
const COLUMNS: DataColumn[] = [
  { key: "station", label: "측점", width: 72 },
  n2("distance", "거리"),
  ...TRIPLES.flatMap(([group, key, tip]) =>
    [
      n2(`${key}_area`, "단면적", group),
      n2(`${key}_volume`, "입적", group),
      n2(`${key}_adjusted`, "보정량", group),
    ].map((c) => (tip ? { ...c, title: `${group.at(-1)} ${c.label} — ${tip}` } : c)),
  ),
  n2("adjusted_total", "보정량계"),
  n2("fill_area", "단면적", ["성토"]),
  n2("fill_volume", "입적", ["성토"]),
  n2("diverted", "유용토"),
  n2("balance", "차인토량"),
  n2("cumulative", "누가토량"),
  ...FACES.flatMap(([group, key]) => [
    n2(`${key}_length`, "거리", group),
    n2(`${key}_area`, "면적", group),
  ]),
];

export function note(text: string): HTMLElement {
  const p = document.createElement("p");
  p.className = "ui-general-block__empty";
  p.textContent = text;
  return p;
}

/** 표 한 장 — 공용 컨테이너(카드) 안에 설명 · 공용 표 · 아래 줄 */
export function tableCard(
  info: HTMLElement[],
  table: HTMLElement,
  after: HTMLElement[] = [],
): HTMLElement {
  return createCard({ body: [...info, table, ...after] });
}

function stationRow(row: EarthworkRow, first: boolean, interval: number): DataRow {
  // 첫 측점은 앞이 없어 입적 · 보정량 · 면적이 없음(빈 값)
  const v = (value: number): number | null => (first ? null : value);
  const out: DataRow = {
    station: stationLabel(row.chainage_m, interval) + (row.notes.length ? " *" : ""),
    distance: row.distance_m,
    adjusted_total: v(row.adjusted_total_m3),
    fill_area: row.fill_area_m2,
    fill_volume: v(row.fill_volume_m3),
    diverted: v(row.diverted_m3),
    balance: v(row.balance_m3),
    cumulative: v(row.cumulative_m3),
  };
  const r = row as unknown as Record<string, number>;
  for (const [, key] of TRIPLES) {
    out[`${key}_area`] = r[`${key}_area_m2`];
    out[`${key}_volume`] = v(r[`${key}_volume_m3`]);
    out[`${key}_adjusted`] = v(r[`${key}_adjusted_m3`]);
  }
  for (const [, key] of FACES) {
    out[`${key}_length`] = row.faces?.[key]?.length_m ?? null;
    out[`${key}_area`] = first ? null : (row.faces?.[key]?.area_m2 ?? null);
  }
  return out;
}

/** 합계 줄 — 단면적 · 거리는 합이 뜻이 없어 비움(옛 엔진 `totals` 와 같음) · 누가토량 = 마지막 줄 */
function totalRow(table: EarthworkTable): DataRow {
  const t = table.totals;
  const out: DataRow = {
    station: "합계",
    distance: t.distance_m,
    adjusted_total: t.adjusted_total_m3,
    fill_volume: t.fill_volume_m3,
    diverted: t.diverted_m3,
    balance: t.balance_m3,
    cumulative: table.rows[table.rows.length - 1]?.cumulative_m3,
  };
  for (const [, key] of TRIPLES) {
    out[`${key}_volume`] = t[`${key}_volume_m3`];
    out[`${key}_adjusted`] = t[`${key}_adjusted_m3`];
  }
  // 값이 하나도 없는 칸(제근 — B07 에 값 없음)은 합계도 비움
  for (const [, key] of FACES) {
    const any = table.rows.some((row) => row.faces?.[key]?.area_m2 != null);
    out[`${key}_area`] = any ? t[`${key}_area_m2`] : null;
  }
  return out;
}

function renderSheet(host: HTMLElement, table: EarthworkTable, interval: number): void {
  if (!table.rows.length) {
    host.replaceChildren(note("측점 단면적이 아직 없습니다 — 횡단 설계를 먼저 마치세요."));
    return;
  }
  const c = (kind: string): string => table.conversion_factors[kind]?.compacted.toFixed(2) ?? "";
  const flagged = table.rows.filter((row) => row.notes.length);
  const info = [
    note(
      `평균단면적법 · 노선 ${table.route_id}${table.confirmed ? "(확정)" : "(확정 전 최신 노선)"} · ` +
        `측점 ${table.station_count} · 다짐 환산계수 토사 ${c("soil")} · 리핑암 ${c("ripping_rock")} · ` +
        `발파암 ${c("blasting_rock")} · 보정량계 = 절토 보정량 · 면 거리 = B07 횡단도 수량 · ` +
        `단위 m · ㎡ · ㎥`,
    ),
    ...(flagged.length ? [note(`* ${flagged[0].notes[0]} — ${flagged.length}곳`)] : []),
  ];
  const grid = createDataTable({
    columns: COLUMNS,
    rows: table.rows.map((row, i) => stationRow(row, i === 0, interval)),
    frozen: 1,
    total: totalRow(table),
    caption: "토적표",
  });
  grid.root.dataset.b08Earthwork = "table";
  host.replaceChildren(tableCard(info, grid.root));
}

const SHEETS = [
  { id: "summary", label: "토공집계표" },
  { id: "sheet", label: "토적표" },
  { id: "haul", label: "평균운반거리" },
  { id: "free", label: "종방향 무대운반거리" },
] as const;

type SheetId = (typeof SHEETS)[number]["id"];

export async function renderEarthwork(host: HTMLElement, projectId: string): Promise<void> {
  host.replaceChildren(note("토공 수량을 만드는 중…"));
  let table: EarthworkTable;
  let interval = 20;
  try {
    const [response, gap] = await Promise.all([
      fetch(`${API_BASE_URL}/projects/${projectId}/quantity/earthwork`, { credentials: "include" }),
      stationInterval(projectId).catch(() => 20),
    ]);
    const body = (await response.json().catch(() => null)) as
      (EarthworkTable & { detail?: unknown }) | null;
    if (!response.ok || !body) {
      const detail = body?.detail;
      throw new Error(typeof detail === "string" ? detail : `HTTP ${response.status}`);
    }
    table = body;
    interval = gap;
  } catch (error) {
    host.replaceChildren(note(`토공 수량을 불러오지 못했습니다 — ${String(error)}`));
    return;
  }

  const tabs = document.createElement("div");
  tabs.className = "b08-quantity__tabs b08-earthwork__tabs";
  tabs.setAttribute("role", "tablist");
  const view = document.createElement("div");
  const select = (picked: SheetId): void => {
    tabs.replaceChildren(
      ...SHEETS.map(({ id, label }) => {
        const button = createButton({
          label,
          variant: id === picked ? "filled" : "ghost",
          size: "sm",
          onClick: () => id !== picked && select(id),
        });
        button.setAttribute("role", "tab");
        button.setAttribute("aria-selected", String(id === picked));
        button.dataset.b08EarthworkSheet = id;
        return button;
      }),
    );
    if (picked === "sheet") renderSheet(view, table, interval);
    else if (picked === "summary") renderEarthworkSummary(view, table);
    else if (picked === "haul") renderHaulDistance(view, table);
    else renderFreeHaul(view, table);
  };
  host.replaceChildren(tabs, view);
  select("summary");
}