/** 帖子类型 / 可见性 / 展示文案（前后端共用约定） */

export const POST_TYPES = [
  { value: "discussion", label: "讨论", hint: "日常交流" },
  { value: "question", label: "问答", hint: "提问求解" },
  { value: "poll", label: "投票", hint: "收集选项意见" },
  { value: "bounty", label: "悬赏", hint: "积分托管求解" },
  { value: "lottery", label: "抽奖", hint: "评论参与开奖" },
] as const;

export type PostTypeValue = (typeof POST_TYPES)[number]["value"];

export const CONTENT_ACCESS = [
  { value: "public", label: "公开" },
  { value: "login", label: "登录可见" },
  { value: "reply", label: "回复可见" },
  { value: "points", label: "积分可见" },
  { value: "password", label: "密码可见" },
  { value: "mixed", label: "含隐藏内容" },
] as const;

export type ContentAccessValue = (typeof CONTENT_ACCESS)[number]["value"];

export const BOUNTY_EXPIRE_DAYS = [3, 7, 14, 30] as const;
export const LOTTERY_EXPIRE_DAYS = [1, 3, 7, 14] as const;
export const POLL_EXPIRE_DAYS = [1, 3, 7, 14] as const;

export function normalizePostType(t?: string): PostTypeValue {
  if (!t) return "discussion";
  if (POST_TYPES.some((x) => x.value === t)) return t as PostTypeValue;
  return "discussion";
}

export function postTypeLabel(t?: string): string {
  const n = normalizePostType(t);
  return POST_TYPES.find((x) => x.value === n)?.label || "讨论";
}

export function contentAccessLabel(a?: string): string {
  const hit = CONTENT_ACCESS.find((x) => x.value === a);
  return hit?.label || "公开";
}

/** 列表 type_status → 徽章文案 */
export function typeStatusLabel(postType?: string, typeStatus?: string): string {
  const pt = normalizePostType(postType);
  const s = (typeStatus || "").toLowerCase();
  switch (pt) {
    case "question":
      return s === "solved" ? "已解决" : "未解决";
    case "poll":
      return s === "closed" ? "已结束" : "进行中";
    case "bounty":
      if (s === "solved") return "已采纳";
      if (s === "expired") return "已过期";
      return "进行中";
    case "lottery":
      if (s === "drawn") return "已开奖";
      if (s === "closed") return "已截止";
      return "进行中";
    default:
      return "";
  }
}

/** 状态徽章 CSS class（浅色区分） */
export function typeStatusClass(postType?: string, typeStatus?: string): string {
  const pt = normalizePostType(postType);
  const s = (typeStatus || "").toLowerCase();
  let kind = "open";
  switch (pt) {
    case "question":
      kind = s === "solved" ? "solved" : "unsolved";
      break;
    case "poll":
      kind = s === "closed" ? "closed" : "open";
      break;
    case "bounty":
      if (s === "solved") kind = "solved";
      // 已过期：与投票「已结束」同色（灰胶囊，标识已到期）
      else if (s === "expired") kind = "closed";
      else kind = "open";
      break;
    case "lottery":
      // 已开奖 / 已截止：与投票「已结束」同色（灰胶囊）
      if (s === "drawn" || s === "closed") kind = "closed";
      else kind = "open";
      break;
    default:
      return "";
  }
  return `badge-status badge-status-${kind}`;
}