/**
 * # 脚本 导入页脚 Elementor 模板（legacy elementor_library post 58）
 * 背景：WordPress 导入管线未迁移 elementor_library 类型（仅 page/post/landing），
 * 页脚模板（post 58，含 46d7afa / d834160 两节及其内嵌 28c7f0b8 / a428bb4）因此缺失。
 * 数据源：legacy/dusuniot-db-20261029.sql 中 `(meta_id,58,'_elementor_data','…')` 行。
 * 补丁：线上页脚另有 f95e22e（Google Preferred Source 图，dump 快照之后新增），
 * 依线上 DOM（/tmp/orig-footer.html 取证：class elementor-widget__width-inherit、
 * img 528×64、链接 google.com/preferences/source?q=dusuniot.com）补入 2ccb47d 列末位。
 * 结果写入 contents（type=template, slug=footer, meta.elementor），供 Layout 渲染。
 * 运行：bun scripts/import-footer-template.ts
 */
import { SQL } from "bun";

const DUMP = "/home/bigcode/data/dev/sites/dusuniot/legacy/dusuniot-db-20261029.sql";
const db = new SQL("postgres://dusuniot:dusuniot@127.0.0.1:25432/dusuniot");

/** # 函数 从 dump 提取 post 58 的 _elementor_data 并反转义为 JSON
 * 返回值 Elementor 元素数组
 */
async function extractTemplate(): Promise<Record<string, unknown>[]> {
  const text = await Bun.file(DUMP).text();
  const m = text.match(/\(\d+,58,'_elementor_data','((?:[^'\\]|\\.)*)'\)/);
  if (!m) throw new Error("dump 中未找到 post 58 的 _elementor_data");
  const raw = m[1]!;
  // SQL dump 反斜杠转义：\" → "、\' → '、\\ → \
  const json = raw.replace(/\\'/g, "'").replace(/\\"/g, '"').replace(/\\\\/g, "\\");
  const data = JSON.parse(json);
  if (!Array.isArray(data)) throw new Error("_elementor_data 不是数组");
  return data as Record<string, unknown>[];
}

/** # 函数 深度查找指定 id 的元素节点 */
function findElement(els: Record<string, unknown>[], id: string): Record<string, unknown> | null {
  for (const el of els) {
    if (el.id === id) return el;
    const children = el.elements as Record<string, unknown>[] | undefined;
    if (children?.length) {
      const hit = findElement(children, id);
      if (hit) return hit;
    }
  }
  return null;
}

/** # 函数 线上快照新增的 f95e22e（Google Preferred Source 图）
 * 线上 post-58.css 取证：.elementor-element-f95e22e img{width:300px}、
 * > .elementor-widget-container{margin:10px 0 0}；dump 快照之后新增，故在此补全。
 */
function preferredSourceWidget(): Record<string, unknown> {
  return {
    id: "f95e22e",
    elType: "widget",
    settings: {
      image: {
        url: "http://www.dusuniot.com/wp-content/uploads/2022/06/google-preffered-source.png",
        id: 161805,
        alt: "google prefferd source",
        source: "library",
        size: "",
      },
      image_size: "full",
      width: { unit: "px", size: 300, sizes: [] },
      align: "left",
      _element_width: "inherit",
      _margin: { unit: "px", top: "10", right: "0", bottom: "0", left: "0", isLinked: false },
      link: {
        url: "https://www.google.com/preferences/source?q=dusuniot.com",
        is_external: "on",
        nofollow: "on",
        custom_attributes: "",
      },
    },
    elements: [],
    widgetType: "image",
  };
}

const elements = await extractTemplate();

// 补丁：2ccb47d 列末尾追加 f95e22e（幂等：已存在则跳过）
const col = findElement(elements, "2ccb47d");
if (!col) throw new Error("模板缺少 2ccb47d 列");
const colChildren = (col.elements as Record<string, unknown>[]) || [];
const psIdx = colChildren.findIndex((el) => el.id === "f95e22e");
if (psIdx >= 0) colChildren[psIdx] = preferredSourceWidget();
else colChildren.push(preferredSourceWidget());
col.elements = colChildren;

// 补丁：社交图标行 405d251 宽度模式（线上 class=elementor-widget__width-auto、
// 生成 CSS width:auto；dump 快照为 inherit，实测线上为 auto → 与 gtranslate 同排）
const social = findElement(elements, "405d251");
if (social) {
  const st = (social.settings as Record<string, unknown>) || {};
  st._element_width = "auto";
  social.settings = st;
}
// 补丁：gtranslate 短代码控件 2481635 桌面外距（线上 post-58.css：margin -10px 0 0 20px；
// dump 只有 _margin_mobile，桌面值来自快照之后的编辑）
const gt = findElement(elements, "2481635");
if (gt) {
  const st = (gt.settings as Record<string, unknown>) || {};
  st._margin = { unit: "px", top: "-10", right: "0", bottom: "0", left: "20", isLinked: false };
  gt.settings = st;
}

const meta = JSON.stringify({ elementor: elements });

// 写入 contents：type=template / slug=footer；已存在则更新
const existing = await db`SELECT id FROM contents WHERE slug='footer' AND type='template'`;
if (existing.length) {
  await db`UPDATE contents SET meta=${meta}::text::jsonb, status='published', updated_at=now() WHERE id=${existing[0]!.id}`;
  console.log("已更新 footer 模板，contents.id =", existing[0]!.id);
} else {
  const inserted = await db`
    INSERT INTO contents (type, slug, title, status, meta, legacy_id, published_at)
    VALUES ('template', 'footer', 'Footer', 'published', ${meta}::text::jsonb, 58, now())
    RETURNING id`;
  console.log("已插入 footer 模板，contents.id =", inserted[0]!.id);
}

// 验证：节数量与顶层 id
const top = elements.map((el) => el.id).join(", ");
console.log("顶层节:", top);
await db.end();