<?php

function fulcrm_collection_permission() {
    return array( 'administer fulcrm collection' => array( 'title' => t('Administer fulcrm collection'),
                                                           'description' => t('Perform main installation/administration tasks for fulcrm collection.'),
                                                           ),                          
                  );
}

function fulcrm_collection_menu() {
    /*
    $items[ 'admin/config/services/fulcrm' ] = array( 'page callback' => 'system_admin_menu_block_page',
                                                      'file' => 'system.admin.inc',
                                                      'file path' => drupal_get_path('module', 'system'),
                                                      'title' => 'fulcrm',
                                                      'description' => 'Configuration integration with fulcrm.org.',
                                                      'position' => 'right',
                                                      'access callback' => 'user_access',
                                                      'access arguments' => array('access administration pages'),
                                                      );
   */
    $items[ 'admin/config/services/fulcrm/collection' ] = array( 'page callback' => 'fulcrm_collection_admin',
                                                                 'file' => 'fulcrm_collection.admin.inc',
                                                                 'title' => 'fulcrm Collection',
                                                                 'description' => 'Configure collection for fulcrm.org.',
                                                                 'access callback' => 'user_access',
                                                                 'access arguments' => array('administer fulcrm collection'),
                                                                 );

    return $items;
}

function fulcrm_collection_get_d_value( $d, $key ) {
    $key = explode( '.', $key );
    foreach ( $key as $bit ) {
        if ( array_key_exists( $bit, $d ) )
            $d = $d[ $bit ];
        else
            return NULL;
    }
    return $d;
}

function _fulcrm_collection_set_d_value( &$d, $key, $value ) {
    switch ( count( $key ) ) {
    case 0:
        return NULL;
    case 1:
        $d[ $key[ 0 ] ] = $value;
        return $value;
    default:
        if ( !array_key_exists( $key[ 0 ], $d ) )
            $d[ $key[ 0 ] ] = array();
        return _fulcrm_collection_set_value( $d[ $key[ 0 ] ], array_slice( $key, 1 ), $value );
    }
}

function fulcrm_collection_set_d_value( &$d, $key, $value ) {
    return _fulcrm_collection_set_d_value( $d, explode( '.', $key ), $value );
}

function fulcrm_collection_form_values_to_d( $prefix, $values ) {
    $d = array();

    foreach ( $values as $k => $v ) {
        $bits = explode( '/fulcrm/', $k );
        if ( ( count( $bits ) === 2 ) && ( $bits[ 0 ] === $prefix ) ) {
            if ( $bits[ 1 ] === 'fulcrm_collections' )
                fulcrm_collection_set_d_value( $d, $bits[ 1 ], array( $v ) );
            else
                fulcrm_collection_set_d_value( $d, $bits[ 1 ], $v );
        }
    }

    return $d;
}

function fulcrm_collection_to_form( $prefix, $collection_data, $d = array() ) {
    $form = array();

    foreach ( $collection_data[ '_structure' ] as $set_data ) {
        switch ( $set_data[ 'type' ] ) {
        case 'ddataset':
            $fieldset = array( '#type' => 'fieldset',
                               '#title' => $set_data[ 'name' ],
                               '#description' => $set_data[ 'description' ],
                               );

            foreach ( $set_data[ 'fields' ] as $field_data ) {
                switch ( $field_data[ 'type' ] ) {
                case 'text':
                case 'email':
                case 'tel':
                    $fieldset[ $prefix . '/fulcrm/' . $field_data[ 'key' ] ] = array( '#type' => 'textfield',
                                                                                      '#title' => $field_data[ 'name' ],
                                                                                      '#description' => $field_data[ 'description' ],
                                                                                      '#required' => $field_data[ 'required' ],
                                                                                      '#default_value' => fulcrm_collection_get_d_value( $d, $field_data[ 'key' ] ),
                                                                                      );
                    break;
                case 'textarea':
                    $fieldset[ $prefix . '/fulcrm/' . $field_data[ 'key' ] ] = array( '#type' => 'textarea',
                                                                                      '#title' => $field_data[ 'name' ],
                                                                                      '#description' => $field_data[ 'description' ],
                                                                                      '#required' => $field_data[ 'required' ],
                                                                                      '#default_value' => fulcrm_collection_get_d_value( $d, $field_data[ 'key' ] ),
                                                                                      );
                    break;
                default:
                    drupal_set_message( t('Cannot handle ":type" collection structure.', array( ':type' => $field_data[ 'type' ] )), 'error' );
                    break;
                }
            }

            $form[] = $fieldset;

            break;
        default:
            drupal_set_message( t('Cannot handle ":type" collection structure.', array( 'type' => $set_data[ 'type' ] )), 'error' );
            break;
        }
    }

    $form[ $prefix . '/fulcrm/fulcrm_collections' ] = array( '#type' => 'hidden',
                                                             '#default_value' => $collection_data[ 's' ],
                                                             );

    return $form;
}