import { NextRequest, NextResponse } from "next/server";
import { rawDb } from "@/lib/db/client";
import { assertLocalRequest } from "@/lib/api/localOnly";

export const runtime = "nodejs";
export const dynamic = "force-dynamic";

const TABLES = [
  "images",
  "studios",
  "labels",
  "series",
  "actresses",
  "genres",
  "tag_categories",
  "tags",
  "collections",
  "image_actresses",
  "image_genres",
  "image_tags",
  "collection_images",
  "actress_categories",
  "actress_categories_map",
  "app_settings",
];

export async function GET(req: NextRequest) {
  const blocked = assertLocalRequest(req);
  if (blocked) return blocked;
  const data: Record<string, unknown[]> = {};
  for (const t of TABLES) {
    try {
      data[t] = rawDb.prepare(`SELECT * FROM ${t}`).all();
    } catch {
      data[t] = [];
    }
  }

  const payload = {
    app: "Pinkudex",
    version: 1,
    exportedAt: new Date().toISOString(),
    tables: data,
  };

  const json = JSON.stringify(payload, null, 2);
  const stamp = new Date().toISOString().replace(/[:.]/g, "-");
  return new NextResponse(json, {
    headers: {
      "Content-Type": "application/json; charset=utf-8",
      "Content-Disposition": `attachment; filename="pinkudex-backup-${stamp}.json"`,
      "Cache-Control": "no-store",
    },
  });
}