import { json, requireAdmin } from "../../../../_lib/auth";
import { addUpload, isJpeg, removeUpload } from "../../../../_lib/photos";

export const dynamic = "force-dynamic";

/**
 * The admin page resizes photos in the browser (max 1920px JPEG plus a 64px thumbnail)
 * before sending them, so the server only validates and stores.
 */
export async function POST(request: Request) {
  const denied = await requireAdmin(request, { mutating: true });
  if (denied) return denied;
  let form: FormData;
  try {
    form = await request.formData();
  } catch {
    return json({ error: "Expected a photo upload." }, 400);
  }
  const photo = form.get("photo");
  const thumb = form.get("thumb");
  if (!(photo instanceof Blob) || !(thumb instanceof Blob)) return json({ error: "Missing photo." }, 400);
  if (photo.size > 8 * 1024 * 1024 || thumb.size > 256 * 1024) return json({ error: "Photo is too large." }, 413);
  const photoBytes = new Uint8Array(await photo.arrayBuffer());
  const thumbBytes = new Uint8Array(await thumb.arrayBuffer());
  if (!isJpeg(photoBytes) || !isJpeg(thumbBytes)) return json({ error: "Photos must be JPEG." }, 415);
  const takenAt = Number(form.get("takenAt"));
  try {
    const result = await addUpload(photoBytes, thumbBytes, {
      takenAt: Number.isFinite(takenAt) && takenAt > 0 ? takenAt : null,
      width: Math.max(0, Math.round(Number(form.get("width")) || 0)),
      height: Math.max(0, Math.round(Number(form.get("height")) || 0)),
    });
    return json({ ok: true, ...result });
  } catch (error) {
    return json({ error: error instanceof Error ? error.message : "Upload failed." }, 400);
  }
}

export async function DELETE(request: Request) {
  const denied = await requireAdmin(request, { mutating: true });
  if (denied) return denied;
  const key = new URL(request.url).searchParams.get("key") || "";
  return (await removeUpload(key)) ? json({ ok: true }) : json({ error: "Not found." }, 404);
}