/* =============================================================================
 * B09_Estimation_UI_Haul_Modal.ts
 * 「운반 단가」 모달(PLAN 253-3 · 263-1 · 요구 162-1 · 164-1) — 운반공 줄 하나(거리이정표 행 하나)의 단가연결.
 *   위 = 고른 항목 이름 · [변경](단가연결 한 목록 `openPriceLink` — 단가산출 · 사전조합 · 구조물 조합 · 호표) ·
 *   왼 = 고른 항목이 요구하는 입력만(단가산출 = 로직 입력 `fetchLogicInputs` · 호표 = 입력 없음 ·
 *     사전조합 · 구조물 조합 = 담은 로직 이름별 입력 `fetchLibInputs` · 263-2) ·
 *   오른 = 계산 절차 — 거리 줄 · 사이클 식 줄(TS 짝 `B08_Quantity_Haul_Cycle` · 8-2-8 기본값 · 거리 칸 있을 때만) +
 *     로직 산출 줄(서버 `POST …/estimation/logic-preview` · 값 바꾸면 다시 · 최신 응답만).
 *   거리 칸(운반거리 · Cm · 사이클시간 · t2) = 거리에서 채움(「거리에서」) · 손으로 고치면 덮음(`own`) ·
 *   빈칸으로 지우면 다시 거리에서. 옛 사이클 손 값(`cycle`) = 칸 없음 · [적용]하면 지움(기본값).
 *   조합 [적용] = 거리 · 손 값 사본(서버 · 같은 값 = 같은 사본) · 연결 {tab dg, key, lib, given, own}.
 *   [적용] = 부르는 쪽 `apply`(캐시 → [저장] 때 서버 정본) · 크기 = 큰 창보다 작게(276).
 *   여는 곳 = B08 거리이정표 표 우클릭 · B09 설계내역서 운반공 줄 단가연결 — 연결 있는 줄만(276 ·
 *   연결 없음 = 단가연결 목록 → 옵션 값 창 옛 길).
 * ========================================================================== */

import { API_BASE_URL, CURRENT_PROJECT_ID_KEY } from "@config/config_frontend";
import { createButton, el, showToast } from "@ui/ui_template_elements";
import { openModal } from "@ui/ui_template_modal";
import {
  CYCLE_DEFAULTS,
  CYCLE_FILL,
  cycleInputs,
  cycleTime,
  fillGiven,
  type Dist,
} from "../B08_Quantity/B08_Quantity_Haul_Cycle";
import type { ItemInput } from "../M02_MasterTemplete/M02_MasterTemplete_Api_Fetch";
import { fetchLogicInputs } from "../M02_MasterTemplete/M02_MasterTemplete_Labor_Api";
import { createValueControl } from "../M02_MasterTemplete/M02_Labor_Values";
import type { Row } from "./B09_Estimation_Calc_Base";
import {
  fetchLibInputs,
  importLib,
  openPriceLink,
  parseLib,
  type LibLine,
  type LibPick,
  type Picked,
  type PriceLinkOpts,
} from "./B09_Estimation_UI_Tabs_Bill_Link";

export interface HaulModalOpts extends PriceLinkOpts {
  /** 지금 연결(없으면 null) */
  ref: Row | null;
  /** 그 행 거리 — L1 포장 계 · L2 비포장(km) */
  dist: Dist;
  /** 줄 이름(제목) */
  name: string;
}

/** 옛 사이클 손 칸(253-3) — 새 모달은 받지 않음 */
const OLD_OWN = new Set(["L1", "L2", "t1"]);
const FROM_DIST = "거리에서";

const fmt = (v: number | null | undefined): string =>
  v == null || !Number.isFinite(v) ? "—" : String(v);

/** 계산 절차 — 사이클 식 줄(거창 단가산출 꼴) */
export function cycleLines(input: Record<string, unknown>): string[] {
  const v: Record<string, number> = { ...CYCLE_DEFAULTS };
  for (const k of Object.keys(v)) if (typeof input[k] === "number") v[k] = input[k] as number;
  const r = cycleTime(input);
  return [
    "사이클시간 — 건설품셈 8-2-8 덤프트럭",
    `q = T / rt × f = ${v.T} / ${v.rt} × ${v.f} = ${r.q} ㎥`,
    `n = q / (qs × k) = ${r.q} / (${v.qs} × ${v.k}) = ${r.n} 회`,
    `t1 = Cms × n / (60 × Es) = ${v.Cms} × ${r.n} / (60 × ${v.Es}) = ${r.t1} 분`,
    `t2 = (L1/V1 + L1/V2 + L2/V3 + L2/V4) × 60 = (${v.L1}/${v.V1} + ${v.L1}/${v.V2} + ${v.L2}/${v.V3} + ${v.L2}/${v.V4}) × 60 = ${r.t2} 분`,
    `Cm = t1 + t2 + t3 + t4 + t5 + t6 = ${r.t1} + ${r.t2} + ${v.t3} + ${v.t4} + ${v.t5} + ${v.t6} = ${r.cm} 분`,
    `운반거리 = L1 + L2 = ${r.L} km`,
  ];
}

interface Preview {
  lines: string[];
  unit: string;
  price: number | null;
  why: string | null;
}

async function preview(code: string, given: Row, rate: unknown, picks: unknown): Promise<Preview> {
  const projectId = localStorage.getItem(CURRENT_PROJECT_ID_KEY);
  if (!projectId) throw new Error("프로젝트 없음");
  const res = await fetch(`${API_BASE_URL}/projects/${projectId}/estimation/logic-preview`, {
    method: "POST",
    credentials: "include",
    headers: { "Content-Type": "application/json" },
    body: JSON.stringify({ code, given, rate: rate ?? null, picks: picks ?? null }),
  });
  if (!res.ok) throw new Error(`HTTP ${res.status}`);
  return (await res.json()) as Preview;
}

const label = (text: string, unit: string): string => (unit ? `${text} (${unit})` : text);
const KIND_TEXT: Record<string, string> = {
  logic: "단가산출",
  precombo: "일위대가 사전조합",
  combo: "구조물 조합",
  dg: "일위대가 호표",
  sg: "단가산출 호표",
};

/** 「운반 단가」 모달 */
export function openHaulModal(o: HaulModalOpts): void {
  const logicRef = o.ref?.tab === "logic" ? o.ref : null;
  const old = (logicRef?.cycle as Row) || {};
  const libRef = o.ref?.tab === "dg" && o.ref.lib ? parseLib(String(o.ref.lib)) : null;
  const st = {
    /** 고른 것 — 단가산출 아닌 것(조합 · 호표) */
    other: (libRef
      ? { ...libRef, name: String(o.ref?.name ?? ""), unit: "" }
      : o.ref && !logicRef
        ? { kind: o.ref.tab, ref: o.ref, from: { name: o.ref.name ?? o.ref.key } }
        : null) as Picked | null,
    /** 조합 담은 로직 줄(263-2) · 손 값 {줄 id: {입력: 값}} · 덮은 칸 `줄 id|입력` */
    lines: [] as LibLine[],
    libGiven: structuredClone((libRef && (o.ref?.given as Row)) || {}) as Record<string, Row>,
    libOwn: new Set<string>((libRef && (o.ref?.own as string[])) || []),
    code: String(logicRef?.code ?? ""),
    name: String(logicRef?.name ?? ""),
    given: { ...((logicRef?.given as Row) || {}) } as Row,
    own: new Set<string>(((logicRef?.own as string[]) || []).filter((n) => !OLD_OWN.has(n))),
    rate: logicRef?.rate ?? null,
    picks: logicRef?.picks ?? null,
    inputs: [] as ItemInput[],
    unit: "",
  };
  const oldCycle = Object.keys(old).length > 0;
  let seq = 0;
  let timer = 0;
  openModal({
    title: `운반 단가 — ${o.name}`,
    closeLabel: "닫기",
    wide: true,
    dialogClass: "b09-haul-modal",
    mount: (body, close, head) => {
      // 크기(276) — 공용 큰 창(96vw × 94vh)보다 작게 · 가운데 · 몸 안 두 칸이 따로 스크롤
      body.parentElement?.setAttribute(
        "style",
        "--modal-max:min(680px,86vh);width:min(1100px,94vw);height:var(--modal-max)",
      );
      const title = el("strong");
      const linkBox = el("div", {
        attrs: { style: "display:flex;gap:8px;align-items:center;margin-bottom:8px" },
      });
      const left = el("div", { attrs: { style: "overflow:auto;min-width:0" } });
      const steps = el("pre", {
        attrs: { style: "margin:0;white-space:pre-wrap;font-size:12px;line-height:1.6" },
      });
      const right = el("div", { attrs: { style: "overflow:auto;min-width:0" }, children: [steps] });
      // 사이클 = 8-2-8 기본값 + 거리(옛 손 값 안 씀 · [적용]하면 지움)
      const ref = (): Row => ({ own: [...st.own], cycle: {}, given: st.given });
      const names = (): string[] => st.inputs.map((i) => i.이름);
      const filled = (): Row => fillGiven(ref(), names(), o.dist) as Row;

      const isLib = (p: Picked | null): p is LibPick & { name: string; unit: string } =>
        p?.kind === "combo" || p?.kind === "precombo";
      /** 거리 칸 값(거리 없으면 undefined · 서버 짝 `Bill_Library.haul_values`) */
      const fromDist = (name: string): unknown =>
        o.dist ? fillGiven({ given: {}, own: [], cycle: {} }, [name], o.dist)[name] : undefined;

      const redraw = (): void => {
        const fills =
          (st.code !== "" && names().some((n) => n in CYCLE_FILL)) ||
          (isLib(st.other) &&
            !!o.dist &&
            st.lines.some((l) => l.입력.some((i) => i.이름 in CYCLE_FILL)));
        const input = cycleInputs(ref(), o.dist);
        const head2 = fills
          ? [
              `거리 — 포장 ${fmt(o.dist?.L1)} km + 비포장 ${fmt(o.dist?.L2)} km`,
              ...cycleLines(input),
              "",
            ]
          : [];
        window.clearTimeout(timer);
        const my = ++seq;
        if (isLib(st.other)) {
          steps.textContent = [
            ...head2,
            `${KIND_TEXT[st.other.kind]} — [적용]하면 거리 · 손 값 사본(같은 값 = 같은 사본)`,
            "단가 = [저장] 뒤 서버 셈",
          ].join("\n");
          return;
        }
        if (!st.code) {
          const what = st.other
            ? `${KIND_TEXT[st.other.kind] ?? ""} — 입력 없음 · 그대로 연결`
            : "없음";
          steps.textContent = `연결 — ${what}`;
          return;
        }
        steps.textContent = [...head2, "단가산출 — 셈 중…"].join("\n");
        timer = window.setTimeout(() => {
          preview(st.code, filled(), st.rate, st.picks).then(
            (got) => {
              if (my !== seq) return; // 최신 응답만
              st.unit = got.unit;
              const price = got.price == null ? `빈칸 — ${got.why ?? ""}` : `${got.price} 원`;
              steps.textContent = [...head2, ...got.lines, "", `단가 = ${price}`].join("\n");
            },
            (error: unknown) => {
              if (my === seq) steps.textContent = [...head2, `못 셈 — ${String(error)}`].join("\n");
            },
          );
        }, 250);
      };

      const row = (text: string, cells: HTMLElement[]): HTMLElement =>
        el("div", {
          className: "m02-inputval__row",
          children: [
            el("span", { className: "m02-inputval__name", text }),
            el("div", { className: "m02-inputval__cell", children: cells }),
          ],
        });
      const shows: Array<() => void> = [];

      /** 입력 칸 하나 — auto = 거리에서 채울 값(아니면 undefined) · set(null = 비움) */
      const valueRow = (
        input: ItemInput,
        auto: () => unknown,
        hand: () => unknown,
        set: (value: unknown) => void,
      ): HTMLElement => {
        const now = auto();
        const field = createValueControl(
          input,
          ((now === undefined ? hand() : now) as string | number | null) ?? null,
          (next, bad) => {
            if (bad) return;
            const empty = next === null || next === "";
            const num = typeof next === "string" && Number.isFinite(Number(next));
            set(empty ? null : num ? Number(next) : next);
            update();
          },
        );
        field.control.setAttribute("data-labor-input", input.이름);
        const tag = el("span", { className: "m02-labin__muted" });
        shows.push(() => {
          const value = auto();
          tag.textContent = value === undefined ? "" : FROM_DIST;
          if (value !== undefined && document.activeElement !== field.control)
            field.control.value = String(value ?? "");
        });
        return row(label(input.이름, input.단위 || ""), [field.control, tag, field.error]);
      };
      const logicRows = (): HTMLElement[] =>
        st.inputs.map((input) => {
          const name = input.이름;
          const fill = name in CYCLE_FILL;
          return valueRow(
            input,
            () => (fill && !st.own.has(name) ? filled()[name] : undefined),
            () => st.given[name],
            (value) => {
              if (value === null) delete st.given[name];
              else st.given[name] = value;
              if (fill && value !== null) st.own.add(name);
              else st.own.delete(name);
            },
          );
        });
      /** 조합 = 담은 로직 이름별 입력(263-2) */
      const libRows = (): HTMLElement[] =>
        st.lines.flatMap((line) => [
          el("h5", { text: `${line.이름} (${line.로직})`, attrs: { style: "margin:8px 0 2px" } }),
          ...line.입력.map((input) => {
            const name = input.이름;
            const id = `${line.id}|${name}`;
            const fill = name in CYCLE_FILL;
            return valueRow(
              input,
              () => (fill && !st.libOwn.has(id) ? fromDist(name) : undefined),
              () => st.libGiven[line.id]?.[name] ?? line.값[name],
              (value) => {
                const mine = (st.libGiven[line.id] ??= {});
                if (value === null) delete mine[name];
                else mine[name] = value;
                if (fill && value !== null) st.libOwn.add(id);
                else st.libOwn.delete(id);
              },
            );
          }),
        ]);

      /** 값 바뀜 — 칸은 그대로 두고 표시 · 계산 절차만 */
      const update = (): void => {
        shows.forEach((show) => show());
        redraw();
      };
      const muted = (text: string): HTMLElement => el("p", { className: "m02-labin__muted", text });
      /** 고른 것 바뀜 — 왼쪽 칸을 새로 */
      const refresh = (): void => {
        shows.splice(0);
        const lines = st.code
          ? st.inputs.length
            ? logicRows()
            : [muted("입력 없음")]
          : isLib(st.other)
            ? st.lines.length
              ? libRows()
              : [muted("담은 로직 입력 없음")]
            : [muted(st.other ? "입력 없음 — 그대로 연결" : "연결 없음 — [고르기]")];
        left.replaceChildren(
          el("h4", { text: "옵션 값", attrs: { style: "margin:12px 0 4px" } }),
          ...lines,
          ...(oldCycle && st.code
            ? [muted("옛 사이클 손 값 — 셈은 8-2-8 기본값 · [적용]하면 지움")]
            : []),
        );
        const p = st.other;
        title.textContent = st.code
          ? `단가산출  ${st.code} ${st.name}`
          : p
            ? `${KIND_TEXT[p.kind] ?? p.kind}  ${String("from" in p ? (p.from.name ?? "") : "name" in p ? p.name : "")}`
            : "연결 — 없음";
        change.querySelector(".ui-btn__label")!.textContent = st.code || p ? "변경" : "고르기";
        update();
      };

      const useLogic = (code: string, name: string): void => {
        fetchLogicInputs([code]).then(
          (got) => {
            st.other = null;
            st.code = code;
            st.name = name;
            st.inputs = got.로직[0]?.입력 ?? [];
            const keep = new Set(st.inputs.map((i) => i.이름));
            for (const k of Object.keys(st.given)) if (!keep.has(k)) delete st.given[k];
            refresh();
          },
          (error: unknown) => showToast(`로직 입력을 못 읽음 — ${String(error)}`, "error"),
        );
      };
      /** 조합 담은 로직 입력 읽고 왼쪽 새로 */
      const useLib = (p: LibPick): void => {
        fetchLibInputs(p).then(
          (lines) => {
            st.lines = lines;
            refresh();
          },
          (error: unknown) => showToast(`조합 입력을 못 읽음 — ${String(error)}`, "error"),
        );
      };
      const usePicked = (p: Picked): void => {
        if (p.kind === "logic") return useLogic(p.code, p.name);
        st.other = p;
        st.code = "";
        st.inputs = [];
        st.lines = [];
        st.libGiven = {};
        st.libOwn.clear();
        if (isLib(p)) useLib(p);
        refresh();
      };
      const change = createButton({
        label: "변경",
        variant: "ghost",
        size: "sm",
        onClick: () => void openPriceLink({ ...o, onPick: usePicked }),
      });
      linkBox.append(title, change);
      const ok = createButton({
        label: "적용",
        onClick: () => {
          const p = st.other;
          if (!st.code && !p) return showToast("연결할 것을 먼저 고르세요", "error");
          if (isLib(p)) {
            const haul = { given: st.libGiven, own: [...st.libOwn], dist: o.dist };
            const { kind, layer, owner, key, lib } = p;
            void importLib(o, { kind, layer, owner, key, lib, haul });
          } else if (p && "ref" in p) o.apply(p.ref, p.from);
          else {
            const next: Row = {
              tab: "logic",
              code: st.code,
              name: st.name,
              given: filled(),
              rate: st.rate,
              picks: st.picks,
              own: [...st.own],
            };
            o.apply(next, { name: st.name, unit: st.unit.replace(/^원\//, "") });
            showToast("적용함 — [저장]하면 서버가 거리로 다시 셈", "success");
          }
          close();
        },
      });
      head.append(ok);
      body.append(
        linkBox,
        el("div", {
          attrs: {
            style:
              "display:grid;grid-template-columns:minmax(300px,1fr) minmax(340px,1.4fr);gap:16px;flex:1;min-height:0",
          },
          children: [left, right],
        }),
      );
      if (st.code) useLogic(st.code, st.name);
      else {
        if (libRef) useLib(libRef);
        refresh();
      }
    },
  });
}