import * as fs from "fs";
import { API_LIST_FILE } from "./constants";
import { loadApiListFromDb, upsertApiListToDb } from "./db";
import type { ApiListItem } from "./types";

function parseApiListFromJson(): ApiListItem[] {
  if (!fs.existsSync(API_LIST_FILE)) {
    return [];
  }
  try {
    const text = fs.readFileSync(API_LIST_FILE, "utf-8").trim();
    if (!text) {
      return [];
    }
    const parsed = JSON.parse(text);
    if (!Array.isArray(parsed)) {
      return [];
    }
    const seenRoutes = new Set<string>();
    const list: ApiListItem[] = [];
    for (const item of parsed) {
      const route = String(item?.route || "").trim();
      const name = String(item?.name || "").trim();
      if (!route || !route.startsWith("/") || !name || seenRoutes.has(route)) {
        continue;
      }
      seenRoutes.add(route);
      list.push({ name, route });
    }
    return list;
  } catch (error) {
    console.warn("[ADMIN] 读取 api-list.json 失败:", error);
    return [];
  }
}

// 一次性迁移：如果 DB 为空且 api-list.json 存在，导入到 DB
export async function migrateApiListFromJsonIfNeeded(): Promise<void> {
  const dbList = await loadApiListFromDb();
  if (dbList.length > 0) return;
  const jsonList = parseApiListFromJson();
  if (jsonList.length > 0) {
    await upsertApiListToDb(jsonList);
    console.log(
      `[BOOTSTRAP] 已从 api-list.json 迁移 ${jsonList.length} 条接口到数据库`,
    );
  }
}

export async function loadApiList(): Promise<ApiListItem[]> {
  return loadApiListFromDb();
}