import { queryOne } from "../../../../lib/db";
import { getServerSession } from "next-auth/next";
import { authOptions } from "../../auth/[...nextauth]/route";

export async function POST(request) {
  const session = await getServerSession(authOptions);

  if (!session) {
    return new Response(JSON.stringify({ error: "Unauthorized" }), {
      status: 401,
    });
  }

  try {
    const { teamCode } = await request.json();
    if (!teamCode) {
      return new Response(JSON.stringify({ error: "Team code is required" }), {
        status: 400,
      });
    }

    const team = await queryOne("SELECT id FROM teams WHERE code = ?", [
      teamCode,
    ]);

    if (!team) {
      return new Response(JSON.stringify({ error: "Invalid team code" }), {
        status: 404,
      });
    }

    await queryOne("UPDATE users SET team_id = ? WHERE id = ?", [
      team.id,
      session.user.id,
    ]);

    return new Response(JSON.stringify({ teamId: team.id }), {
      status: 200,
    });
  } catch (error) {
    console.error("Join team error:", error);
    return new Response(JSON.stringify({ error: "Failed to join team" }), {
      status: 500,
    });
  }
}