/**
 * # 脚本 下载缺失媒体文件（media 表行存在但 public/uploads 无物理文件的）
 * 配合 import-live-posts.ts：dump 快照之后新上传的图片需从原站拉取。
 * 用法：bun scripts/download-missing-media.ts
 */
import { SQL } from "bun";
import { existsSync, mkdirSync } from "node:fs";
import { dirname, join } from "node:path";

const LIVE = "https://www.dusuniot.com";
const sql = new SQL(process.env.DATABASE_URL || "postgres://dusuniot:dusuniot@127.0.0.1:25432/dusuniot", { max: 1 });
const rows = await sql`select id, path, url from media order by id`;
let ok = 0, fail = 0;
for (const r of rows) {
  const f = join("public", "uploads", r.path);
  if (existsSync(f)) continue;
  const res = await fetch(`${LIVE}/wp-content/uploads/${r.path}`, { headers: { "User-Agent": "Mozilla/5.0" } });
  if (!res.ok) {
    console.log("MISS", res.status, r.path);
    fail++;
    continue;
  }
  mkdirSync(dirname(f), { recursive: true });
  await Bun.write(f, res);
  ok++;
  if (ok % 20 === 0) console.log(`... ${ok} downloaded`);
}
console.log("下载完成:", ok, "缺失:", fail);
await sql.end();