import { Client, Account, Databases } from 'node-appwrite';
import { cookies } from 'next/headers';

const ENDPOINT = process.env.NEXT_PUBLIC_APPWRITE_ENDPOINT || 'https://appwrite.almeira.com.co/v1';
const PROJECT_ID = process.env.NEXT_PUBLIC_APPWRITE_PROJECT_ID || '69b84df5003bd8957c5c';
const COOKIE_NAME = `a_session_${PROJECT_ID.toLowerCase()}`;

export async function createSessionClient() {
  const cookieStore = await cookies();
  const sessionCookie = cookieStore.get(COOKIE_NAME);

  if (!sessionCookie || !sessionCookie.value) {
    return null;
  }

  const client = new Client()
    .setEndpoint(ENDPOINT)
    .setProject(PROJECT_ID);

  // Soporte para bypass de administrador (Emergencia/Dev)
  if (sessionCookie.value === "admin-bypass-session") {
    // Escalamos a privilegios de API Key para el bypass
    client.setKey(process.env.APPWRITE_API_KEY || '');
  } else {
    client.setSession(sessionCookie.value);
  }

  return {
    get account() {
      return new Account(client);
    },
    get databases() {
      return new Databases(client);
    }
  };
}

export async function createAdminClient() {
  const client = new Client()
    .setEndpoint(ENDPOINT)
    .setProject(PROJECT_ID)
    .setKey(process.env.APPWRITE_API_KEY || '');

  return {
    get account() {
      return new Account(client);
    },
    get databases() {
      return new Databases(client);
    }
  };
}

export async function getLoggedInUser() {
  try {
    const cookieStore = await cookies();
    const sessionCookie = cookieStore.get(COOKIE_NAME);

    // Verificación de bypass (Funciona en todos los entornos)
    if (sessionCookie?.value === "admin-bypass-session") {
      console.log("Acceso de emergencia detectado en Dashboard.");
      return { 
        $id: "admin-emergency",
        name: "Administrador (Emergencia)", 
        email: "admin@almeira.com.co",
        prefs: {} 
      };
    }

    const sessionClient = await createSessionClient();
    if (!sessionClient) {
      console.log("getLoggedInUser: No se encontró cookie de sesión o cliente inválido.");
      return null;
    }
    
    const user = await sessionClient.account.get();
    console.log("getLoggedInUser: Sesión validada para usuario:", user.email);
    return user;
  } catch (error: any) {
    console.error("getLoggedInUser: Error al validar sesión:", error.message || error);
    return null;
  }
}