import dayjs from "dayjs";

/** 公告类型 */
export const NOTICE_TYPE_OPTIONS = [
  { value: "emergency", label: "紧急通知", color: "#f56c6c" },
  { value: "employee", label: "员工公告", color: "#409eff" },
  { value: "company", label: "企业公告", color: "#e6a23c" },
];

/** 优先级 */
export const PRIORITY_OPTIONS = [
  { value: "urgent", label: "紧急", tag: "danger" },
  { value: "high", label: "重要", tag: "warning" },
  { value: "normal", label: "普通", tag: "info" },
];

/** 发布状态 */
export const PUBLISH_STATUS_OPTIONS = [
  { value: "draft", label: "草稿", tag: "info" },
  { value: "published", label: "已发布", tag: "success" },
  { value: "withdrawn", label: "已撤回", tag: "warning" },
  { value: "expired", label: "已过期", tag: "" },
];

/** 阅读范围 */
export const READ_SCOPE_OPTIONS = [
  { value: "all", label: "全员可见" },
  { value: "department", label: "指定部门" },
  { value: "management", label: "管理层" },
];

export const DEPT_OPTIONS = [
  { value: "101", label: "研发部" },
  { value: "102", label: "销售部" },
  { value: "103", label: "行政部" },
  { value: "104", label: "财务部" },
  { value: "105", label: "总经办" },
  { value: "106", label: "人力资源部" },
];

export const STORAGE_KEY = "oa_notice_announcement_v1";

export function noticeTypeLabel(v) {
  return NOTICE_TYPE_OPTIONS.find((x) => x.value === v)?.label || v || "—";
}

export function noticeTypeColor(v) {
  return NOTICE_TYPE_OPTIONS.find((x) => x.value === v)?.color || "#909399";
}

export function priorityLabel(v) {
  return PRIORITY_OPTIONS.find((x) => x.value === v)?.label || v || "—";
}

export function priorityTag(v) {
  return PRIORITY_OPTIONS.find((x) => x.value === v)?.tag || "info";
}

export function publishStatusLabel(v) {
  return PUBLISH_STATUS_OPTIONS.find((x) => x.value === v)?.label || v || "—";
}

export function publishStatusTag(v) {
  return PUBLISH_STATUS_OPTIONS.find((x) => x.value === v)?.tag || "info";
}

export function readScopeLabel(v) {
  return READ_SCOPE_OPTIONS.find((x) => x.value === v)?.label || v || "—";
}

export function createEmptyForm() {
  return {
    id: "",
    noticeNo: "",
    title: "",
    noticeType: "employee",
    priority: "normal",
    contentHtml: "",
    publishDate: dayjs().format("YYYY-MM-DD"),
    expireDate: "",
    readScope: "all",
    targetDeptIds: [],
    requireReadConfirm: false,
    publishStatus: "draft",
    publisherName: "",
    publishTime: "",
    readCount: 0,
    createTime: "",
    updateTime: "",
  };
}

export function createInitialMockNotices() {
  return [
    {
      id: "notice_1",
      noticeNo: "NA202605100001",
      title: "关于台风天气居家办公的紧急通知",
      noticeType: "emergency",
      priority: "urgent",
      contentHtml:
        "<p><strong>紧急通知</strong></p><p>受台风影响，明日（5月17日）全体员工居家办公，请各部门负责人做好工作安排与员工联络。</p>",
      publishDate: "2026-05-16",
      expireDate: "2026-05-20",
      readScope: "all",
      targetDeptIds: [],
      requireReadConfirm: true,
      publishStatus: "published",
      publisherName: "行政部",
      publishTime: "2026-05-16 08:30:00",
      readCount: 128,
      createTime: "2026-05-16 08:00:00",
      updateTime: "2026-05-16 08:30:00",
    },
    {
      id: "notice_2",
      noticeNo: "NA202605120002",
      title: "2026年端午节放假安排公告",
      noticeType: "employee",
      priority: "high",
      contentHtml:
        "<p>根据国家法定节假日安排，端午节放假时间为 6月8日至6月10日，共3天。6月7日（周六）正常上班。</p>",
      publishDate: "2026-05-12",
      expireDate: "2026-06-15",
      readScope: "all",
      targetDeptIds: [],
      requireReadConfirm: false,
      publishStatus: "published",
      publisherName: "人力资源部",
      publishTime: "2026-05-12 10:00:00",
      readCount: 256,
      createTime: "2026-05-12 09:30:00",
      updateTime: "2026-05-12 10:00:00",
    },
    {
      id: "notice_3",
      noticeNo: "NA202605140003",
      title: "办公区域消防演练通知",
      noticeType: "company",
      priority: "normal",
      contentHtml: "<p>定于 5月25日 14:00 在总部大楼进行消防演练，请各部门提前安排人员参加。</p>",
      publishDate: "2026-05-14",
      expireDate: "2026-05-26",
      readScope: "department",
      targetDeptIds: ["101", "102", "103"],
      requireReadConfirm: false,
      publishStatus: "draft",
      publisherName: "行政部",
      publishTime: "",
      readCount: 0,
      createTime: "2026-05-14 15:00:00",
      updateTime: "2026-05-14 15:00:00",
    },
  ];
}

export function loadStoredNotices() {
  try {
    const raw = localStorage.getItem(STORAGE_KEY);
    if (!raw) return null;
    const data = JSON.parse(raw);
    return Array.isArray(data) ? data : null;
  } catch {
    return null;
  }
}

export function saveStoredNotices(rows) {
  try {
    localStorage.setItem(STORAGE_KEY, JSON.stringify(rows));
  } catch {
    /* ignore */
  }
}

export function nextNoticeNo() {
  return `NA${dayjs().format("YYYYMMDD")}${String(Math.floor(Math.random() * 9000) + 1000)}`;
}

export function validateNoticeForm(form) {
  const title = (form.title || "").trim();
  if (!title) return { ok: false, message: "请输入公告标题" };
  if (!form.publishDate) return { ok: false, message: "请选择发布日期" };
  if (!form.noticeType) return { ok: false, message: "请选择公告类型" };
  if (form.readScope === "department" && !(form.targetDeptIds || []).length) {
    return { ok: false, message: "请选择可见部门" };
  }
  return { ok: true, title };
}

export function isExpired(row) {
  if (!row.expireDate) return false;
  return dayjs(row.expireDate).endOf("day").isBefore(dayjs());
}