Aislo/B08_Quantity/B08_Quantity_UI_Side_Gravel.ts

/* =============================================================================
 * B08_Quantity_UI_Side_Gravel.ts
 * 산출 조건 「혼합석 부설」 구획 — 범위 고르개 · 연약·습윤 구간 · 두께·C·L (2026-09-15 브레인 포장 둘 ⓑ).
 *
 * 페이지 본문(`B08_Quantity_UI_Page.ts`)이 700줄을 넘어 새 칸을 이 파일로 뺌(CLAUDE.md 4장).
 * ⚠ 화면은 셈하지 않음 — 면적·부피는 서버 `gravel` 을 보이기만 · 제안값도 서버 `gravel.suggested`.
 * ⚠ 빈 칸(`null`)은 「제안값으로」 — 0 과 다름. 구간 글자를 못 읽으면 저장값을 안 바꾸고 알림.
 * ========================================================================== */

import { ui_locales, currentLanguageIndex } from "@ui/ui_template_locale";
import type { SideFieldHelpers } from "./B08_Quantity_UI_Side_TreeWaste";

function L(key: keyof typeof ui_locales): string {
  return ui_locales[key][currentLanguageIndex];
}

export interface GravelRange {
  from_m: number;
  to_m: number;
}

export interface GravelDraft {
  gravel_all_unpaved: boolean;
  gravel_soft_wet_ranges: GravelRange[];
  gravel_thickness_m: number | null;
  gravel_conversion_c: number | null;
  gravel_conversion_l: number | null;
}

/** 서버 `gravel_surfacing` 결과 중 화면이 보이는 몫. */
export interface GravelSummary {
  area_m2: number;
  loose_m3: number;
  excavation_soil_m3: number;
  suggested?: { thickness_m: number; c: number; l: number };
}

export function gravelDraftFrom(stored: Record<string, unknown>): GravelDraft {
  const ranges = Array.isArray(stored.gravel_soft_wet_ranges)
    ? (stored.gravel_soft_wet_ranges as GravelRange[])
    : [];
  const num = (value: unknown) => (typeof value === "number" ? value : null);
  return {
    gravel_all_unpaved: Boolean(stored.gravel_all_unpaved),
    gravel_soft_wet_ranges: ranges.map((r) => ({ from_m: r.from_m, to_m: r.to_m })),
    gravel_thickness_m: num(stored.gravel_thickness_m),
    gravel_conversion_c: num(stored.gravel_conversion_c),
    gravel_conversion_l: num(stored.gravel_conversion_l),
  };
}

/** [저장] 몸통 — 구간은 **통째로**(지운 구간까지 가야 되돌릴 길이 있음) · 숫자 `null` 도 보냄. */
export function gravelPayload(draft: GravelDraft): GravelDraft {
  return gravelDraftFrom(draft as unknown as Record<string, unknown>);
}

/** 「120~160, 480~520」 → 구간 목록. 한 조각이라도 못 읽으면 `null`(빈 글은 빈 목록). */
export function parseGravelRanges(text: string): GravelRange[] | null {
  const parts = text
    .split(",")
    .map((part) => part.trim())
    .filter(Boolean);
  const ranges: GravelRange[] = [];
  for (const part of parts) {
    const match = /^(\d+(?:\.\d+)?)\s*[~\-]\s*(\d+(?:\.\d+)?)$/.exec(part);
    if (!match) return null;
    const a = Number(match[1]);
    const b = Number(match[2]);
    if (a === b) return null;
    ranges.push({ from_m: Math.min(a, b), to_m: Math.max(a, b) });
  }
  return ranges;
}

export function appendGravelFields(
  panel: HTMLElement,
  draft: GravelDraft & { dirty: boolean },
  summary: GravelSummary | undefined,
  h: SideFieldHelpers,
): void {
  panel.append(h.field(L("B08_Quantity_Side_Gravel"), ""));
  panel.append(
    h.selectField(
      L("B08_Quantity_Gravel_Scope"),
      draft.gravel_all_unpaved ? "all" : "",
      [
        { value: "", label: L("B08_Quantity_Gravel_Scope_Legal") },
        { value: "all", label: L("B08_Quantity_Gravel_Scope_All") },
      ],
      (value) => {
        draft.gravel_all_unpaved = value === "all";
        draft.dirty = true;
      },
    ),
  );

  const row = document.createElement("label");
  row.className = "b08-quantity__field";
  const name = document.createElement("span");
  name.textContent = L("B08_Quantity_Gravel_SoftWet");
  const input = document.createElement("input");
  input.type = "text";
  input.className = "b08-quantity__input";
  input.placeholder = L("B08_Quantity_Gravel_SoftWet_Placeholder");
  input.value = draft.gravel_soft_wet_ranges.map((r) => `${r.from_m}~${r.to_m}`).join(", ");
  const warn = h.hintRow("");
  input.addEventListener("input", () => {
    const parsed = parseGravelRanges(input.value);
    warn.textContent = parsed ? "" : L("B08_Quantity_Gravel_SoftWet_Invalid");
    if (!parsed) return;
    draft.gravel_soft_wet_ranges = parsed;
    draft.dirty = true;
  });
  row.append(name, input);
  panel.append(row, warn);

  const suggested = summary?.suggested;
  const number = (
    label: keyof typeof ui_locales,
    value: number | null,
    hint: number | undefined,
    set: (v: number | null) => void,
  ) => {
    const field = h.optionalNumberField(L(label), value, "0.01", (typed) => {
      set(typed);
      draft.dirty = true;
    });
    const box = field.querySelector("input");
    if (box && hint !== undefined)
      box.placeholder = `${L("B08_Quantity_Gravel_Suggested")} ${hint}`;
    return field;
  };
  panel.append(
    number(
      "B08_Quantity_Gravel_Thickness",
      draft.gravel_thickness_m,
      suggested?.thickness_m,
      (v) => {
        draft.gravel_thickness_m = v;
      },
    ),
    number("B08_Quantity_Gravel_C", draft.gravel_conversion_c, suggested?.c, (v) => {
      draft.gravel_conversion_c = v;
    }),
    number("B08_Quantity_Gravel_L", draft.gravel_conversion_l, suggested?.l, (v) => {
      draft.gravel_conversion_l = v;
    }),
  );
  if (summary) {
    const fmt = (value: number) => value.toLocaleString("ko-KR", { maximumFractionDigits: 2 });
    panel.append(
      h.hintRow(
        `${L("B08_Quantity_Gravel_Now")} — ${fmt(summary.area_m2)}㎡ · ${fmt(summary.loose_m3)}㎥` +
          ` · ${L("B08_Quantity_Gravel_Excavation")} ${fmt(summary.excavation_soil_m3)}㎥`,
      ),
    );
  }
  panel.append(h.hintRow(L("B08_Quantity_Side_Gravel_Hint")));
}