import { getToken } from "next-auth/jwt";
import { query, run } from "@/lib/db";

export const dynamic = "force-dynamic"; // Disable caching

// Ensure the user is an admin
async function verifyAdmin(request) {
  const token = await getToken({
    req: request,
    secret:
      process.env.NEXTAUTH_SECRET ||
      "your-fallback-secret-should-be-at-least-32-chars",
  });

  if (!token) {
    return { authorized: false, error: "Unauthorized", status: 401 };
  }

  if (token.role !== "admin") {
    return { authorized: false, error: "Admin access required", status: 403 };
  }

  return { authorized: true, token };
}

// POST - Fix all QR codes in the database to follow the QR[id] format
export async function POST(request) {
  try {
    // Verify admin access
    const { authorized, error, status } = await verifyAdmin(request);
    if (!authorized) {
      return Response.json({ error }, { status });
    }

    // Get all clues ordered by ID to maintain sequence
    const clues = await query("SELECT id FROM clues ORDER BY id ASC");

    // Count of fixed clues
    let fixedCount = 0;

    // Start a transaction
    await run("BEGIN TRANSACTION");

    try {
      // Assign sequential QR codes (QR1, QR2, QR3, etc.) based on array index
      // This ensures no gaps in the QR sequence regardless of DB IDs
      for (let i = 0; i < clues.length; i++) {
        const sequentialQrCode = `QR${i + 1}`;

        // Update the clue with the sequential QR code
        await run("UPDATE clues SET qr_code = ? WHERE id = ?", [
          sequentialQrCode,
          clues[i].id,
        ]);

        fixedCount++;
      }

      // Commit changes
      await run("COMMIT");

      return Response.json({
        success: true,
        message: `QR codes fixed successfully. Set ${fixedCount} clues to sequential QR codes without gaps.`,
        totalClues: clues.length,
        fixedClues: fixedCount,
      });
    } catch (error) {
      // Roll back on error
      await run("ROLLBACK");
      throw error;
    }
  } catch (error) {
    console.error("Fix QR codes error:", error);
    return Response.json(
      { error: "Failed to fix QR codes: " + error.message },
      { status: 500 }
    );
  }
}