/* =============================================================================
 * ui_template_ui_kit_frames.ts
 * 부품 모음 화면의 틀(552-4) 견본 — `ui_template_ui_kit_parts.ts` 의 frame 줄이 부름.
 *   견본 = 진짜 부품 함수 · 클래스로 그림 · 화면에 붙는(fixed) 틀은 칸 안에 놓이게 자리만 인라인으로 풂.
 * ========================================================================== */

import { createIconButton } from "./ui_template_button";
import { createButton } from "./ui_template_elements";
import { createFloatPanel } from "./ui_template_float_panel";
import { createFormGrid, createPageFrame } from "./ui_template_general_layout";
import { createInputField } from "./ui_template_input";
import { createListRow } from "./ui_template_list_row";
import { createMapTools, mapToolButton } from "./ui_template_map_tools";
import { createWorkflowPanelHandle } from "./ui_template_overlay";
import { createPanelHead } from "./ui_template_panel_head";
import { createPublicFrame } from "./ui_template_public_layout";
import { createSidePanels } from "./ui_template_side_panels";
import { createToolbar } from "./ui_template_toolbar";
import type { KitState } from "./ui_template_ui_kit_parts";
import { createStepBar } from "./ui_template_workflow_layout";

const noop = (): void => {};

function div(className: string, text?: string): HTMLDivElement {
  const n = document.createElement("div");
  n.className = className;
  if (text !== undefined) n.textContent = text;
  return n;
}

const wrap = (...children: HTMLElement[]): HTMLElement => {
  const box = div("ui-kit__demo-row");
  box.append(...children);
  return box;
};

/** 마우스 · 눌림 = data-state · 막힘 = disabled */
function mark<T extends HTMLElement>(node: T, state: KitState): T {
  if (state === "disabled") {
    if (node instanceof HTMLButtonElement) node.disabled = true;
    node.setAttribute("aria-disabled", "true");
  } else if (state !== "default") node.dataset.state = state;
  return node;
}

/** 아래 단추 줄 — [?][<][>] + 주 단추 */
function sidebarActions(): HTMLElement {
  const bar = div("ui-sidebar-actions");
  const help = createButton({ label: "?", variant: "ghost", onClick: noop });
  help.classList.add("ui-help-btn");
  const prev = createButton({ label: "<", variant: "ghost", onClick: noop });
  const next = createButton({ label: ">", variant: "ghost", onClick: noop });
  prev.classList.add("ui-step-nav-btn");
  next.classList.add("ui-step-nav-btn");
  bar.append(help, prev, next, createButton({ label: "저장", onClick: noop }));
  return bar;
}

/** 작업 화면 틀 — 왼쪽 패널(제목 줄 · 카드 · 아래 단추 줄 · 손잡이) + 본문 자리 */
function workFrame(): HTMLElement {
  const panel = document.createElement("aside");
  panel.className = "ui-workflow-overlay__panel ui-workflow-overlay__panel--title";
  panel.style.cssText = "position:relative;top:auto;bottom:auto;width:280px;height:260px";
  const header = div("ui-workflow-overlay__header");
  const title = document.createElement("h2");
  title.className = "ui-workflow-overlay__title";
  title.textContent = "횡단설계";
  const project = document.createElement("span");
  project.className = "ui-workflow-overlay__project";
  project.textContent = "검증 프로젝트";
  header.append(title, project);
  const handle = createWorkflowPanelHandle("side");
  handle.setOpen(true);
  const body = div("ui-workflow-overlay__body");
  body.style.cssText = "display:flex;flex-direction:column;gap:8px;padding-top:8px";
  const card = div("ui-sidebar-card ui-sidebar-section");
  card.append(
    createPanelHead({ title: "구조물 배치", sub: "측점 3 곳" }).root,
    createListRow({ label: "No.0+020 배수관", active: true, onClick: noop }),
    createListRow({ label: "No.0+140 옹벽", onClick: noop }),
  );
  const fill = div("");
  fill.style.flex = "1";
  body.append(card, fill, sidebarActions());
  panel.append(header, handle.root, body);
  const main = div("ui-workflow-layout__main", "본문(지도 · 그림 · 표)");
  main.style.cssText = "min-height:260px;padding:12px;border:1px dashed var(--color-border)";
  const box = div("ui-kit__frame-demo");
  box.style.cssText = "display:grid;grid-template-columns:280px 1fr;width:100%";
  box.append(panel, main);
  return box;
}

function pageFrame(): HTMLElement {
  const f = createPageFrame(null, "구성원", "회사 사람 · 역할 · 초대");
  f.setAction(createButton({ label: "초대", onClick: noop }));
  f.body.append(div("ui-general-block__empty", "몸 — 표 · 카드가 들어감"));
  // 입력 칸 2열 · 끝 단추 줄(557-2 · D01 · E01 등록 양식)
  const actions = div("ui-general-block__actions ui-general-block__actions--end");
  actions.append(
    createButton({ label: "취소", variant: "ghost", onClick: noop }),
    createButton({ label: "등록", onClick: noop }),
  );
  f.body.append(
    createFormGrid([
      createInputField({ label: "프로젝트 이름" }).root,
      createInputField({ label: "지역" }).root,
    ]),
    actions,
  );
  return f.root;
}

function publicFrame(): HTMLElement {
  const f = createPublicFrame({
    title: "임도 설계 자동화",
    lead: "지형 자료로 노선 · 종단 · 횡단 · 수량을 한 흐름에.",
    actions: [
      createButton({ label: "시작하기", onClick: noop }),
      createButton({ label: "더 알아보기", variant: "ghost", onClick: noop }),
    ],
  });
  f.addSection("기능").append(div("ui-general-block__empty", "구역 몸"));
  f.root.style.width = "100%";
  return f.root;
}

const STEP_NAMES = ["파일", "전처리", "노선", "횡단"];

function steps(state: KitState): HTMLElement | null {
  if (state === "active" || state === "error") return null;
  const bar = createStepBar(STEP_NAMES, 2, { compact: true });
  const target = bar.querySelectorAll<HTMLButtonElement>(".ui-workflow-layout__step")[0];
  mark(target, state);
  if (state !== "default") return bar;
  const list = createStepBar(STEP_NAMES, 2, {
    orientation: "vertical",
    icons: ["1", "2", "3", "4"],
  });
  list.style.width = "180px";
  return wrap(bar, list);
}

function panelHead(): HTMLElement {
  const box = div("");
  box.style.cssText = "display:flex;flex-direction:column;gap:12px;width:320px";
  box.append(
    createPanelHead({ title: "배수관", sub: "3 개", divider: true }).root,
    createPanelHead({
      title: "표준 횡단면",
      actions: [createButton({ label: "더함", variant: "ghost", onClick: noop })],
    }).root,
  );
  return box;
}

function listRow(state: KitState): HTMLElement | null {
  if (state === "error") return null;
  const box = div("");
  box.style.cssText = "display:flex;flex-direction:column;gap:2px;width:240px";
  const one = mark(createListRow({ label: "B1 배수관", sub: "No.0+020", onClick: noop }), state);
  box.append(one);
  if (state === "default")
    box.append(
      createListRow({ label: "B2 옹벽", active: true, no: 2, size: 28, onClick: noop }),
      createListRow({ label: "B3 측구", grip: true, trailing: "12 m", size: 36, onClick: noop }),
      createListRow({ label: "B4 비탈", stripe: "var(--color-success)", onClick: noop }),
    );
  return box;
}

function floatPanel(): HTMLElement {
  const place = (root: HTMLElement): HTMLElement => {
    root.style.position = "relative";
    return root;
  };
  const one = createFloatPanel({ title: "측정", onClose: noop, draggable: true, width: 220 });
  one.body.append("거리 124.5 m · 기울기 8.2 %");
  const pop = createFloatPanel({ popover: true, width: 160 });
  pop.body.append("팝오버 — 머리 없음");
  return wrap(place(one.root), place(pop.root));
}

function drawer(): HTMLElement {
  const row = div("ui-side-panels-row");
  row.style.cssText = "height:220px;width:100%";
  const main = div("", "본문");
  main.style.padding = "12px";
  const body = (text: string): HTMLElement => div("", text);
  const sp = createSidePanels({
    prefKey: "ui-kit-demo",
    follow: false,
    defaultWidth: 280,
    panels: [
      { id: "info", title: "상세", body: body("고른 줄의 값") },
      { id: "set", title: "설정", body: body("보기 설정") },
    ],
  });
  row.append(main, sp.root);
  return row;
}

function toolbar(): HTMLElement {
  const box = div("");
  box.style.cssText = "display:flex;flex-direction:column;gap:12px;width:100%";
  const items = () => [
    createIconButton({ icon: "search", title: "찾기", onClick: noop }),
    createIconButton({ icon: "adjustments", title: "보기", onClick: noop }),
    "divider" as const,
    createButton({ label: "더함", variant: "ghost", onClick: noop }),
    "spacer" as const,
    createButton({ label: "저장", onClick: noop }),
  ];
  box.append(
    createToolbar({ items: items(), size: 24 }),
    createToolbar({ items: items() }),
    createToolbar({ items: items().slice(0, 3), size: 32, glass: true }),
  );
  return box;
}

function mapTools(): HTMLElement {
  const tools = createMapTools({
    label: "평면 도구",
    hint: { lines: ["휠 = 확대", "가운데 끌기 = 이동", "Ctrl+휠 = 돌리기", "Esc = 그리기 끝"] },
    groups: [
      ["undo", "redo"],
      ["view3d", "rotate-ccw", "rotate-cw"],
      [
        "contour-minor",
        "stations",
        mapToolButton("slopes", { pressed: true }),
        "footprint",
        "measure",
      ],
      ["station-snap"],
    ],
  });
  tools.button("contour-minor")!.disabled = true;
  return tools.root;
}

/** 열쇠 → 견본(상태별 · null = 그 상태 없음) */
export const FRAME_DEMOS: Record<string, (state: KitState) => HTMLElement | null> = {
  "work-frame": (s) => (s === "default" ? workFrame() : null),
  "page-frame": (s) => (s === "default" ? pageFrame() : null),
  "public-frame": (s) => (s === "default" ? publicFrame() : null),
  "float-panel": (s) => (s === "default" ? floatPanel() : null),
  drawer: (s) => (s === "default" ? drawer() : null),
  toolbar: (s) => (s === "default" ? toolbar() : null),
  "map-tools": (s) => (s === "default" ? mapTools() : null),
  steps,
  "panel-head": (s) => (s === "default" ? panelHead() : null),
  "list-row": listRow,
};