import { queryOne, run } from "@/lib/db";
import { cookies } from "next/headers";
import { verifyToken } from "@/app/api/auth/[...nextauth]/route";
import { nanoid } from "nanoid";

export async function POST(request) {
  try {
    const cookieStore = await cookies();
    // Check for both possible cookie names
    const sessionToken =
      cookieStore.get("next-auth.session-token")?.value ||
      cookieStore.get("__Secure-next-auth.session-token")?.value;

    if (!sessionToken) {
      return Response.json({ error: "Unauthorized" }, { status: 401 });
    }

    const userData = verifyToken(sessionToken);
    if (!userData) {
      // Add debugging info to help diagnose the issue
      console.log(
        "Invalid session token:",
        sessionToken.substring(0, 10) + "..."
      );
      return Response.json({ error: "Invalid session" }, { status: 401 });
    }

    if (userData.role === "admin") {
      return Response.json(
        { error: "Admins cannot create teams" },
        { status: 403 }
      );
    }

    const { name } = await request.json();
    if (!name || name.trim() === "") {
      return Response.json({ error: "Team name is required" }, { status: 400 });
    }

    const teamCode = nanoid(6).toUpperCase();
    await run("INSERT INTO teams (name, code) VALUES (?, ?)", [name, teamCode]);
    const newTeam = await queryOne("SELECT id FROM teams WHERE code = ?", [
      teamCode,
    ]);
    if (!newTeam || !newTeam.id) {
      throw new Error("Failed to create team");
    }

    // Update the user's team association in DB
    await run("UPDATE users SET team_id = ? WHERE id = ?", [
      newTeam.id,
      userData.id,
    ]);

    // Include the Set-Cookie header to update the session token with the new teamId
    const updatedUserData = {
      ...userData,
      teamId: newTeam.id,
      iat: Math.floor(Date.now() / 1000),
      exp: Math.floor(Date.now() / 1000) + 30 * 24 * 60 * 60, // 30 days
    };

    const { createToken } = await import("@/app/api/auth/[...nextauth]/route");
    const newToken = createToken(updatedUserData);

    // Calculate expiration date for cookie
    const expiryDate = new Date();
    expiryDate.setDate(expiryDate.getDate() + 30);

    return new Response(
      JSON.stringify({ success: true, teamId: newTeam.id, teamName: name }),
      {
        status: 201,
        headers: {
          "Content-Type": "application/json",
          "Set-Cookie": `next-auth.session-token=${newToken}; Path=/; HttpOnly; SameSite=Lax; Expires=${expiryDate.toUTCString()}`,
        },
      }
    );
  } catch (error) {
    console.error("Team creation error:", error);
    return Response.json(
      { error: "Failed to create team: " + error.message },
      { status: 500 }
    );
  }
}