/* =============================================================================
 * B08_Quantity_UI_Page.ts
 * 로그인 후 08: 5차 워크플로우 (수량 산출) — 위 탭 화면 (PLAN 61)
 *
 *   탭 = 구조물 · 토공 · 수리집수면적표 (PLAN 95-1). 위 탭 단추 = 공용 기본 크기(md) · 보조 탭 단추 = sm(PLAN 69-1).
 *   구조물 아래 보조 탭 = 구조물 집계표(61-1) · 총괄자재수량집계표 · 콘크리트소요자재집계표 ·
 *   자재수량집계표(셋 = 121-1 `B08_Quantity_UI_Material`) — 구조물도는 집계표 행을 눌러 여는 모달(95-3).
 *   옛 수량 산출 코드(`old_code/B08_Quantity/`)는 가져오지 않음 — 새로 씀.
 *   좌측 패널 = 메인 탭과 같은 컨테이너 셋 + [저장] 줄(`B08_Quantity_UI_Options` · PLAN 122).
 * ========================================================================== */

import "@ui/ui_template_general_layout.css";
import "./B08_Quantity_UI_Page.css";
import { createWorkflowLayout } from "@ui/ui_template_workflow_layout";
import { createButton } from "@ui/ui_template_elements";
import { ui_locales, currentLanguageIndex } from "@ui/ui_template_locale";
import { CURRENT_PROJECT_ID_KEY } from "@config/config_frontend";
import { workflowSteps } from "../A00_Common/b_page_scaffold";
import { goToWorkflowStage, WORKFLOW_STEP_ROUTES } from "../A00_Common/b_workflow_nav";
import { renderStructureSummary } from "./B08_Quantity_UI_Summary";
import { renderMaterialSheet } from "./B08_Quantity_UI_Material";
import { renderHydro } from "./B08_Quantity_UI_Hydro";
import { renderEarthwork } from "./B08_Quantity_UI_Earthwork";
import { createOptionsPanel } from "./B08_Quantity_UI_Options";

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

const TABS = [
  { id: "structure", label: "B08_Quantity_Tab_Structure" },
  { id: "earthwork", label: "B08_Quantity_Tab_Earthwork" },
  { id: "hydrology", label: "B08_Quantity_Tab_Hydrology" },
] as const;

type TabId = (typeof TABS)[number]["id"];

/** 구조물 탭 보조 탭 — 실무 엑셀 차례. */
const SHEETS = [
  { id: "summary", label: "B08_Quantity_Tab_StructureSummary" },
  { id: "material", label: "B08_Quantity_Tab_MaterialTotal" },
  { id: "concrete", label: "B08_Quantity_Tab_ConcreteMaterial" },
  { id: "quantity", label: "B08_Quantity_Tab_MaterialQuantity" },
] as const;

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

function pendingNote(): HTMLElement {
  const pending = document.createElement("p");
  pending.className = "ui-general-block__empty";
  pending.textContent = L("B08_Quantity_Tab_Pending");
  return pending;
}

/** 구조물 탭 — 보조 탭 줄 + 몸통(보조 탭마다 새 몸통 · 늦은 응답이 다른 보조 탭을 덮지 않게). */
function renderStructure(host: HTMLElement, projectId: string | null): void {
  const tabs = document.createElement("div");
  tabs.className = "b08-quantity__tabs b08-structure__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: L(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.b08StructureSheet = id;
        return button;
      }),
    );
    const body = document.createElement("div");
    view.replaceChildren(body);
    if (!projectId) body.append(pendingNote());
    else if (picked === "summary") void renderStructureSummary(body, projectId);
    else void renderMaterialSheet(body, projectId, picked);
  };
  host.replaceChildren(tabs, view);
  select("summary");
}

/** 탭마다 새 몸통 — 늦게 온 응답이 다른 탭 화면을 덮지 않게(떨어진 몸통에만 그림). */
function renderTab(host: HTMLElement, tab: TabId, projectId: string | null): void {
  const view = document.createElement("div");
  host.replaceChildren(view);
  if (tab === "structure") return renderStructure(view, projectId);
  if (tab === "hydrology" && projectId) return void renderHydro(view, projectId);
  if (tab === "earthwork" && projectId) return void renderEarthwork(view, projectId);
  view.append(pendingNote());
}

export function renderB08Quantity(root: HTMLElement): void {
  const projectId = localStorage.getItem(CURRENT_PROJECT_ID_KEY);

  const tabBar = document.createElement("div");
  tabBar.className = "b08-quantity__tabs";
  tabBar.setAttribute("role", "tablist");
  const panel = document.createElement("div");
  panel.className = "b08-quantity__panel";
  panel.setAttribute("role", "tabpanel");

  let current: TabId = "structure";
  const select = (tab: TabId): void => {
    current = tab;
    tabBar.replaceChildren(
      ...TABS.map(({ id, label }) => {
        const button = createButton({
          label: L(label),
          variant: id === tab ? "filled" : "ghost",
          onClick: () => id !== tab && select(id),
        });
        button.setAttribute("role", "tab");
        button.setAttribute("aria-selected", String(id === tab));
        button.dataset.b08Tab = id;
        return button;
      }),
    );
    renderTab(panel, tab, projectId);
  };

  const body = document.createElement("div");
  body.className = "b08-quantity";
  body.append(tabBar, panel);
  select("structure");

  const layout = createWorkflowLayout({
    title: L("B08_Quantity_Title"),
    steps: workflowSteps(),
    activeStep: 5,
    mainContent: body,
    // [저장] 뒤 열린 탭을 서버 정본으로 다시 그림
    leftPanel: createOptionsPanel(projectId, () => select(current)),
    routes: WORKFLOW_STEP_ROUTES,
    onStepClick: (stepIndex: number) => {
      if (projectId) goToWorkflowStage(projectId, WORKFLOW_STEP_ROUTES[stepIndex]);
    },
  });
  root.append(layout.root);
}