user_bulk_delete.module

<?php

//$Id$

/**
 * @file 
 * Form that lists user registration details including added fields 
 * and allow for bulk deletion to cope with spam registrations
 */



/**
 * @todo
 * 
 * create bulk delete form
 * integrate output string into form
 * refactor
 * make drupal freindly 
 */



/**
 * Implementation of hook_menu().
 */
function user_bulk_delete_menu() {
    $items['user_bulk_delete'] = array(
        'title' => 'Bulk Delete Users', 
        'page callback' => 'drupal_get_form',
        'page arguments' => array('user_bulk_delete_form'),
        'access arguments' => array('administer users'),
    );
    return $items;
}






function start_output(&$output_string){
   $output_string  = "<ul class='user_bulk_delete_list'>\n";
}


function indent_output(&$output_string, $label){
    $output_string  .= "<li>" . $label . "\n <ul class='user_bulk_delete_indented_list'>\n";
}


function outdent_output(&$output_string){
     $output_string  .= "</ul></li>\n";
}


function end_output(&$output_string){
     $output_string  .= "</ul>\n";
    
}


function grow_output(&$output_string = "",$label= "",$value=""){
    if ($label == "" && $value == ""){
        $output_string .= "<li class='blank_line'></li>";
    }
    else{
        $output_string .= "<li>" . $label . " : " . $value . "</li>\n" ;
    }
}

function get_field_item_values(&$output_string,$field_values,$user_field){
    foreach($field_values as $field_values_index){
        if (isset($field_values_index['value'])){
            // add the field label and the field value to the output string
            grow_output($output_string,$user_field['label'],
                        $field_values_index['value']);
        }
    }
}

function get_field_collection_item_values(&$output_string,$field_collection_item_key,$field_collection_item_value,$user_field,$field_collection_fields){
    // if the key starts with "field_" it contains values 
                // unless its "field_name"
    if(preg_match('/^field_/', $field_collection_item_key) && 
            ($field_collection_item_key != "field_name")){
        if(array_key_exists('und', $field_collection_item_value)){
            foreach($field_collection_item_value['und'] 
                    as $field_colection_value){
                    $output_string_label = 
                    $field_collection_fields[$user_field['field_name']][$field_collection_item_key]['label'];
                    $output_string_value = 
                    $field_colection_value['value'];

                    grow_output($output_string,$output_string_label,$output_string_value);

                    $foo = "barr"; 
            }
        }
    $foo = "barr";  
    }

}

 function get_field_collection_details(&$output_string,$field_values_index,$user_field,$field_collection_fields){
    if (isset($field_values_index['value'])){  
        // Add the name of this field collection field to output string
        indent_output($output_string,$user_field['label']);

        //load the field collection for this reference
            $loaded_field_collection = 
            field_collection_item_load($field_values_index['value']);
        // for each field in the filed collection 
        foreach($loaded_field_collection as 
                $field_collection_item_key => $field_collection_item_value){
            get_field_collection_item_values($output_string,$field_collection_item_key,$field_collection_item_value,$user_field,$field_collection_fields);
        }
        outdent_output($output_string);
        $foo = "barr";
    }

}



    
 function get_field_details(&$output_string,$user_field,$selected_user,$field_collection_fields,$user_fields,$entity){
     // if this is a field collection field
    if(array_key_exists($user_field['field_name'],$field_collection_fields)){

        // attempt to load the field collection indexes referenced by this field
        $field_values = field_get_items('user',$entity,$user_field['field_name']);
        // if there are refernece values for this field
        if(is_array($field_values)){
            // for each reference value for this field
            foreach($field_values as $field_values_index){
                // if it has a value get its details
                get_field_collection_details($output_string,$field_values_index,$user_field,$field_collection_fields);
            }
        }
    }
    else{
        // if this is not a field collection field.
        // get all the values for this field
        $field_values = field_get_items('user',$entity,$user_field['field_name']);
        // if there are values for this field
        if(is_array($field_values)){
            // for each value
            get_field_item_values($output_string,$field_values,$user_field);
        }

    }
}
                
                
                
function get_user_details($selected_user){
            // Get list of fields for user entity type
            $user_fields = field_info_instances('user');
            // get list of field clooection fields
            $field_collection_fields = field_info_instances('field_collection_item');
            // start creating the list of fields for this user
            $output_string = "";
            start_output($output_string);
            grow_output($output_string,'Username', $selected_user->name);
            grow_output($output_string,'email', $selected_user->mail);
            //load entity information for this user
            $entity = entity_load_single('user',$selected_user->uid);
            // loop throught the fileds for this user
            foreach ($user_fields['user'] as $user_field){
                // if field is a field collection field
                get_field_details($output_string,$user_field,$selected_user,$field_collection_fields,$user_fields,$entity);
                
            }
            return $output_string;
} 






/**
 * Define the form. 
 */
function user_bulk_delete_form($form, &$form_submit){
    # the options to display in our checkboxes
    $user_options = array(
    'delete' => t('Delete'),
    'authorize' => t('Authorize'), 
    'ignore' => t('Ignore')
    );
    
    // disable form caching
    $form['#cache'] = TRUE;

   // Get all the users on the system
    $users = entity_load('user');
    //loop through the users of the system
    foreach($users as $selected_user){
        
        // check to see if user access is blocked
        if ($selected_user->status =="0" && 
               in_array("authenticated user", $selected_user-> roles)){
            $form[$selected_user->name] = array(
                '#title' => $selected_user->name,
                '#type' => 'radios',
                '#description' => get_user_details($selected_user),
                '#options' => $user_options,
            );                          
        }
    }
    
     $form['submit'] = array(
    '#type' => 'submit',
    '#value' => 'Submit',
  );
    
    return $form;
}  
    

/**
 * Validate the form. 
 */
function user_bulk_delete_form_validate($form, &$form_state){
    if ($form_state['values']['user_name'] == 'King Kong') {
        // We notify the form API that this field has failed validation.
        form_set_error('user_name', t('King Kong is not allowed to use this form.'));
    }
}

/**
 * Handle post validation form submission.
 */
function user_bulk_delete_form_submit($form, &$form_state){
 
        foreach($form_state['values'] as $form_state_name => $form_state_value){
            if(is_array($form_state_value)){
                //check if key exists
               // if ()
                $foo = 'barr';
            }
        drupal_set_message(t('Thanks for filling out the form, %name',
            array('%name' => $name)));
        }
    }