import type { RawRecord } from "@/lib/api/types";

export function asRecord(value: unknown): RawRecord {
  return value && typeof value === "object" && !Array.isArray(value) ? (value as RawRecord) : {};
}

export function asArray(value: unknown): unknown[] {
  return Array.isArray(value) ? value : [];
}

export function text(value: unknown, fallback = "未记录"): string {
  if (typeof value === "string" && value.trim()) return value;
  if (typeof value === "number" || typeof value === "boolean") return String(value);
  return fallback;
}

export function maybeText(value: unknown): string | undefined {
  if (typeof value === "string" && value.trim()) return value;
  if (typeof value === "number" || typeof value === "boolean") return String(value);
  return undefined;
}

export function textList(value: unknown): string[] {
  if (!Array.isArray(value)) return [];
  return value.map((item) => text(item, "")).filter(Boolean);
}

export function countBy<T>(items: T[], getKey: (item: T) => string | undefined): Record<string, number> {
  return items.reduce<Record<string, number>>((acc, item) => {
    const key = getKey(item);
    if (!key) return acc;
    acc[key] = (acc[key] || 0) + 1;
    return acc;
  }, {});
}

export function compactCountMap(counts: Record<string, number>, limit = 3): string {
  const entries = Object.entries(counts).sort((a, b) => b[1] - a[1]);
  if (!entries.length) return "无";
  return entries.slice(0, limit).map(([key, value]) => `${label(key)} ${value}`).join(" · ");
}

// 首轮取词「来源类型」标签的唯一真相源。sourceLabel / methodLabel / label 都从这里取,
// 改文案只改这一处(避免之前散在 3 份 map 里、改一个要改 3 处)。
export const SOURCE_TYPE_LABELS: Record<string, string> = {
  seed_term: "从需求池直出",
  piaoquan_topic_point: "票圈帖子具体的点",
  query_seed_point: "票圈帖子具体的点",
  category_leaf_element: "分类叶子元素"
};

export function label(value: string): string {
  const labels: Record<string, string> = {
    ...SOURCE_TYPE_LABELS,
    item_single: "使用原始需求词",
    tag_query: "从视频标签继续游走",
    author_works: "从作者继续游走",
    query_next_page: "翻页",
    search_query_direct: "首轮搜索",
    pattern_itemset: "来自需求 Pattern",
    pattern_search_query: "来自需求 Pattern",
    ADD_TO_CONTENT_POOL: "入池",
    KEEP_CONTENT_FOR_REVIEW: "待复看",
    REJECT_CONTENT: "淘汰",
    success: "成功",
    skipped: "跳过",
    failed: "失败",
    rule_blocked: "规则阻断",
    pending: "待处理"
  };
  return labels[value] || "系统原因待补充";
}

export function scoreLabel(value: unknown): string {
  if (typeof value === "number" && Number.isFinite(value)) return `${Math.round(value)}`;
  if (typeof value === "string" && value.trim()) return value;
  return "未进入打分";
}

export function shortId(value: unknown): string {
  const raw = text(value, "");
  if (raw.length <= 18) return raw || "未记录";
  return `${raw.slice(0, 8)}...${raw.slice(-6)}`;
}