export const runtime = "nodejs";

// Remove problematic import of NextAuth
import { validateCredentials } from "@/actions/auth";

// Define hardcoded values for NextAuth
const NEXTAUTH_SECRET = "banana";
const NEXTAUTH_URL = "http://localhost:3000";

// Use hardcoded values instead of environment variables
console.log("Using NextAuth Secret: banana");
console.log(`Using NextAuth URL: ${NEXTAUTH_URL}`);

// Custom credentials provider function that doesn't rely on the import
const createCredentialsProvider = (options) => {
  return {
    id: "credentials",
    name: "Credentials",
    type: "credentials",
    credentials: {
      username: { label: "Username", type: "text" },
      password: { label: "Password", type: "password" },
    },
    async authorize(credentials) {
      try {
        if (!credentials?.username || !credentials?.password) return null;
        const user = await validateCredentials(
          credentials.username,
          credentials.password
        );
        return user
          ? {
              id: user.id,
              username: user.username,
              role: user.role,
              teamId: user.teamId,
            }
          : null;
      } catch (error) {
        console.error("NextAuth authorize error:", error);
        return null;
      }
    },
    ...options,
  };
};

export const authOptions = {
  debug: process.env.NODE_ENV === "development",
  providers: [
    // Using our custom provider creator instead of the imported module
    createCredentialsProvider({}),
  ],
  callbacks: {
    async jwt({ token, user }) {
      if (user) {
        token.id = user.id;
        token.role = user.role;
        token.username = user.username;
        token.teamId = user.teamId;
      }
      return token;
    },
    async session({ session, token }) {
      if (token) {
        session.user = session.user || {};
        session.user.id = token.id;
        session.user.role = token.role;
        session.user.username = token.username;
        session.user.teamId = token.teamId;
      }
      return session;
    },
  },
  session: { strategy: "jwt", maxAge: 30 * 24 * 60 * 60 },
  secret: NEXTAUTH_SECRET, // Use the hardcoded secret
  url: NEXTAUTH_URL, // Use the hardcoded URL
};

// Create the handler functions directly without calling NextAuth function
export async function GET(request) {
  // Implement the GET handler for auth
  try {
    // Extract the necessary info from the request
    const { searchParams } = new URL(request.url);
    const callbackUrl = searchParams.get("callbackUrl") || "/";
    const error = searchParams.get("error") || "";

    // For sign-in requests
    if (searchParams.get("csrf")) {
      // Generate a simple CSRF token using the secret
      const csrfToken = Buffer.from(`${Date.now()}-${NEXTAUTH_SECRET}`).toString('base64');
      return new Response(JSON.stringify({ csrfToken }), {
        status: 200,
        headers: {
          "Content-Type": "application/json",
        },
      });
    }

    // For session requests
    if (request.headers.get("x-auth-return-session")) {
      // Return the session info - would need more implementation
      return new Response(JSON.stringify({ user: null }), {
        status: 200,
        headers: {
          "Content-Type": "application/json",
        },
      });
    }

    // Default response for GET - normally this would redirect to the sign-in page
    return new Response(JSON.stringify({ url: "/login", error }), {
      status: 200,
      headers: {
        "Content-Type": "application/json",
      },
    });
  } catch (error) {
    console.error("Auth GET error:", error);
    return new Response(JSON.stringify({ error: "Internal server error" }), {
      status: 500,
      headers: {
        "Content-Type": "application/json",
      },
    });
  }
}

export async function POST(request) {
  // Implement the POST handler for auth
  try {
    const body = await request.json();
    const { username, password } = body;

    // Validate the credentials
    const user = await validateCredentials(username, password);

    if (!user) {
      return new Response(JSON.stringify({ error: "Invalid credentials" }), {
        status: 401,
        headers: {
          "Content-Type": "application/json",
        },
      });
    }

    // Create a session token
    const token = {
      id: user.id,
      username: user.username,
      role: user.role,
      teamId: user.teamId,
      // Add timestamp for token expiration checks
      iat: Math.floor(Date.now() / 1000),
      exp: Math.floor(Date.now() / 1000) + (30 * 24 * 60 * 60), // 30 days
    };

    // Create a simple JWT-like token by encoding and signing with our secret
    const encodedToken = Buffer.from(JSON.stringify(token)).toString('base64');
    const signature = Buffer.from(`${encodedToken}-${NEXTAUTH_SECRET}`).toString('base64');
    const jwtToken = `${encodedToken}.${signature}`;

    return new Response(
      JSON.stringify({
        user: token,
        url: body.callbackUrl || "/dashboard",
      }),
      {
        status: 200,
        headers: {
          "Content-Type": "application/json",
          "Set-Cookie": `next-auth.session-token=${jwtToken}; Path=/; HttpOnly; SameSite=Lax; Max-Age=2592000`,
        },
      }
    );
  } catch (error) {
    console.error("Auth POST error:", error);
    return new Response(JSON.stringify({ error: "Internal server error" }), {
      status: 500,
      headers: {
        "Content-Type": "application/json",
      },
    });
  }
}