now got a working login form alongside the add-new-person form

fulcrm_shoppingcart.module

@@ -401,25 +401,9 @@ function fulcrm_shoppingcart_buy_eventbookingtype_form_submit( $form, &$form_sta
     $form_state[ 'fulcrm_shoppingcart' ][ 'shoppingcart' ] = $cart;
 }
 
-function fulcrm_shoppingcart_buy_eventbookingtype_login_form_submit( $form, &$form_state ) {
-    user_login_submit( $form, $form_state );
-    $form_state[ 'redirect' ] = fulcrm_shoppingcart_buy_url( $form_state[ 'fulcrm_shoppingcart' ][ 'redirect_buy_product_id' ] );
-}
-
-function fulcrm_shoppingcart_buy_eventbookingtype_login_or_add_person_form_submit( $form, &$form_state ) {
-    if ( array_key_exists( 'submit', $form_state[ 'values' ] ) ) {
-        $action = $form_state[ 'values' ][ 'submit' ];
-
-        if ( $action === 'Log in' ) {
-            user_login_submit( $form, $form_state );
-            $form_state[ 'redirect' ] = fulcrm_shoppingcart_buy_url( $form_state[ 'fulcrm_shoppingcart' ][ 'redirect_buy_product_id' ] );
-        } elseif ( $action === 'XXX' ) {
-
-        } else {
+function fulcrm_shoppingcart_buy_eventbookingtype_guest_add_person_form_submit( $form, &$form_state ) {
     die( print_r( $form_state[ 'values' ], 1 ) );
 }
-    }
-}
 
 function fulcrm_shoppingcart_buy_eventbookingtype_form( $form, &$form_state, $person, $eventbookingtype, $product ) {
     $form = array();
@@ -502,6 +486,7 @@ function fulcrm_shoppingcart_buy_eventbookingtype_form( $form, &$form_state, $pe
                 $form[ 'new_person' ] = fulcrm_collection_to_form( 'person', $collection_data[ 'data' ], array() );
             }
         }
+        $form[ '#submit' ] = 'fulcrm_shoppingcart_buy_eventbookingtype_guest_add_person_form_submit';
     }
 
     $form[ 'actions' ] = array( '#type' => 'actions' );
@@ -513,6 +498,27 @@ function fulcrm_shoppingcart_buy_eventbookingtype_form( $form, &$form_state, $pe
     return $form;
 }
 
+function _fulcrm_shoppingcart_drupal_get_form_with_form_state( $form_id, $form_state ) {
+    $args = func_get_args();
+
+    array_shift( $args ); // Remove $form_id from the arguments.
+    array_shift( $args ); // Remove $form_state from the arguments.
+    $form_state[ 'build_info' ][ 'args' ] = $args;
+    return drupal_build_form( $form_id, $form_state );
+}
+
+function fulcrm_shoppingcart_buy_eventbookingtype_login_form_submit( $form, &$form_state ) {
+    user_login_submit( $form, $form_state );
+    $form_state[ 'redirect' ] = fulcrm_shoppingcart_buy_url( $form_state[ 'fulcrm_shoppingcart' ][ 'redirect_buy_product_id' ] );
+}
+
+function fulcrm_shoppingcart_buy_eventbookingtype_login_form( $form, &$form_state, $product_id ) {
+    $form = user_login( $form, $form_state );
+    $form_state[ 'fulcrm_shoppingcart' ][ 'redirect_buy_product_id' ] = $product_id;
+    //$form[ 'actions' ][ 'submit' ][ '#submit' ] = array( 'fulcrm_shoppingcart_buy_eventbookingtype_login_form_submit' );
+    return $form;
+}
+
 function fulcrm_shoppingcart_buy_eventbookingtype( $person, $eventbookingtype, $product ) {
    $person_id = NULL;
     if ( array_key_exists( 'id', $person ) )
@@ -523,7 +529,7 @@ function fulcrm_shoppingcart_buy_eventbookingtype( $person, $eventbookingtype, $
         case 'guest':
         case 'user':
             if ( user_is_anonymous() ) {
-                $user_login_form = drupal_get_form( 'user_login' );
+                $user_login_form = drupal_get_form( 'fulcrm_shoppingcart_buy_eventbookingtype_login_form', $product_id = $product[ 'id' ] );
 
                 $fulcrm_shoppingcart_buy_eventbookingtype_form = drupal_get_form( 'fulcrm_shoppingcart_buy_eventbookingtype_form', $person, $eventbookingtype, $product );
 
@@ -545,7 +551,7 @@ function fulcrm_shoppingcart_buy_eventbookingtype( $person, $eventbookingtype, $
     }
 
     $form = drupal_get_form( 'fulcrm_shoppingcart_buy_eventbookingtype_form', $person, $eventbookingtype, $product );
-    return druapl_render( $form );
+    return drupal_render( $form );
 }
 
 function fulcrm_shoppingcart_buy_generic_product_form_submit( $form, &$form_state ) {

fulcrm_shoppingcart_buy_eventbookingtype.tpl.php

@@ -9,7 +9,7 @@
             <div class="panel-body">
                 <?php $user_login_form[ 'actions' ][ 'submit' ][ '#value' ] = 'Sign In'; ?>
                 <?php $user_login_form[ 'actions' ][ 'submit' ][ '#attributes' ][ 'class' ] = array( 'btn', 'btn-primary' ); ?>
-                <?php print drupal_render( $user_login_form ); ?>
+                <?php print render( $user_login_form ); ?>
             </div>
         </div>
     </div>
@@ -18,7 +18,7 @@
         <div class="panel panel-info">
             <div class="panel-heading"><h3 class="panel-title">Or continue your order by providing some details&hellip;</h3></div>
             <div class="panel-body">
-                <?php print drupal_render( $fulcrm_shoppingcart_buy_eventbookingtype_form ); ?>
+                <?php print render( $fulcrm_shoppingcart_buy_eventbookingtype_form ); ?>
             </div>
         </div>
     </div>