import { asc, eq, inArray } from "drizzle-orm";
import { notFound, redirect } from "next/navigation";

import { db } from "@/db";
import {
  annotationReplies,
  annotations,
  bookmarks,
  files,
  toAnnotationDTO,
  toBookmarkDTO,
  toReplyDTO,
} from "@/db/schema";
import PDFViewer from "@/components/pdf/PDFViewer";
import DebugConsole from "@/components/DebugConsole"; // TEMP-DEBUG (ลบพร้อมไฟล์)
import { getSessionUser } from "@/lib/session";

const UUID_RE =
  /^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$/i;

export const dynamic = "force-dynamic";

export default async function AnnotatePage({
  params,
}: {
  params: { id: string };
}) {
  const { id } = params;
  if (!UUID_RE.test(id)) notFound();

  // defense ซ้อน middleware — identity จาก cookie oacCase ส่งเข้า viewer ตั้งแต่ first paint
  const user = getSessionUser();
  if (!user) redirect("/note/login");

  const [file] = await db.select().from(files).where(eq(files.id, id));
  if (!file) notFound();

  const [annotationRows, bookmarkRows] = await Promise.all([
    db
      .select()
      .from(annotations)
      .where(eq(annotations.fileId, id))
      .orderBy(asc(annotations.createdAt)),
    db
      .select()
      .from(bookmarks)
      .where(eq(bookmarks.fileId, id))
      .orderBy(asc(bookmarks.createdAt)),
  ]);

  // replies ของทุก comment ในไฟล์นี้ (F9) — แม่ถูก CASCADE ไปแล้ว row ก็หายตาม
  const annotationIds = annotationRows.map((r) => r.id);
  const replyRows = annotationIds.length
    ? await db
        .select()
        .from(annotationReplies)
        .where(inArray(annotationReplies.annotationId, annotationIds))
        .orderBy(asc(annotationReplies.createdAt))
    : [];

  return (
    <>
      {/* TEMP-DEBUG: อ่าน log บนจอ iPad ผ่าน Eruda เมื่อเปิดหน้าพร้อม ?debug */}
      <DebugConsole />
      <PDFViewer
      file={{ id: file.id, title: file.title, pdfUrl: file.pdfUrl }}
      initialAnnotations={annotationRows.map(toAnnotationDTO)}
      initialBookmarks={bookmarkRows.map(toBookmarkDTO)}
      initialReplies={replyRows.map(toReplyDTO)}
      user={user}
      />
    </>
  );
}