Aislo/B06_Section/B06_Section_UI_Cross_Notice_Chips.ts

/* =============================================================================
 * B06_Section_UI_Cross_Notice_Chips.ts
 * 횡단 알림 줄 칩 꼴(196-1) — 항목 = 짧은 이름 + 측점 수 칩 한 줄 · 긴 설명 = 공용 호버.
 * 줄 아래 내용 칸 하나를 같이 씀 — 누른 칩의 측점 목록만 · 같은 칩 다시 누르면 닫힘 ·
 * 다른 칩 누르면 바뀜(한 번에 하나). 측점 단추 누름 = `onPick`(그 카드로).
 * 무엇을 셀지는 부르는 쪽(`_FillSlope_Notice`) — 여기는 그리기만.
 * ========================================================================== */

import { attachHoverInfo } from "@ui/ui_template_hover_info";

export interface NoticeChipRow {
  stationId: string;
  text: string;
}

export interface NoticeChipItem {
  key: string;
  /** 짧은 이름 — 칩 글 = 이름 + 측점 수 */
  label: string;
  /** 긴 설명 — 호버 */
  hint: string;
  tone: "warn" | "info";
  rows: NoticeChipRow[];
}

export interface NoticeChips {
  root: HTMLElement;
  /** 측점 설계가 바뀔 때마다 — 연 칩은 그대로(측점이 0 이 되면 닫힘) */
  update: (items: NoticeChipItem[]) => void;
}

export function createNoticeChips(onPick: (stationId: string) => void): NoticeChips {
  const root = document.createElement("div");
  root.className = "b06-section__notice-blocks";
  const chips = document.createElement("div");
  chips.className = "b06-section__notice-chips";
  const panel = document.createElement("div");
  panel.className = "b06-section__notice-list";
  panel.hidden = true;
  root.append(chips, panel);
  let items: NoticeChipItem[] = [];
  let openKey: string | null = null;

  const render = (): void => {
    const open = items.find((item) => item.key === openKey);
    if (!open) openKey = null;
    chips.replaceChildren(
      ...items.map((item) => {
        const chip = document.createElement("button");
        chip.type = "button";
        chip.className = `b06-section__notice-chip b06-section__notice-chip--${item.tone}`;
        chip.dataset.noticeKey = item.key;
        chip.setAttribute("aria-expanded", String(item === open));
        chip.textContent = `${item.label} ${item.rows.length}`;
        return chip;
      }),
    );
    panel.hidden = !open;
    panel.classList.toggle("is-info", open?.tone === "info");
    panel.replaceChildren(
      ...(open?.rows ?? []).map((row) => {
        const button = document.createElement("button");
        button.type = "button";
        button.textContent = row.text;
        button.dataset.stationId = row.stationId;
        return button;
      }),
    );
  };

  chips.addEventListener("click", (event) => {
    const key = (event.target as HTMLElement).closest<HTMLElement>(".b06-section__notice-chip")
      ?.dataset.noticeKey;
    if (!key) return;
    openKey = openKey === key ? null : key;
    render();
  });
  panel.addEventListener("click", (event) => {
    const id = (event.target as HTMLElement).closest("button")?.dataset.stationId;
    if (id) onPick(id);
  });
  attachHoverInfo(
    chips,
    (target) => items.find((item) => item.key === target.dataset.noticeKey)?.hint,
    ".b06-section__notice-chip",
  );

  return {
    root,
    update(next) {
      items = next.filter((item) => item.rows.length);
      render();
    },
  };
}