<?php
// $Id$

/**
 * @file
 * Admin forms for Location.
 */

/**
 * Admin settings form.
 *
 * @ingroup form
 */
function _location_admin_settings() {
  // Recalculate the supported countries.
  cache_clear_all('location:supported-countries', 'cache');
  _location_supported_countries();

  $iso_list_sorted = location_get_iso3166_list();
  array_multisort($iso_list_sorted);
  $iso_list_sorted = array_merge(array('' => ''), $iso_list_sorted);

  $form  = array();
  $form['location_default_country'] = array(
    '#type'           => 'select',
    '#title'          => t('Default country selection'),
    '#default_value'  => variable_get('location_default_country', 'us'),
    '#options'        => $iso_list_sorted,
    '#description'    => t('This will be the country that is automatically selected when a location form is served for a new location.')
  );
  $form['location_display_location'] = array(
    '#type'           => 'radios',
    '#title'          => t('Toggle location display'),
    '#default_value'  => variable_get('location_display_location', 1),
    '#options'        => array(
      0 => t('Disable the display of locations.'),
      1 => t('Enable the display of locations.')
    ),
    '#description'    => t('If you are interested in turning off locations and having a custom theme control their display, you may want to disable the display of locations so your theme can take that function.')
  );

  $form['location_usegmap'] = array(
    '#type'           => 'checkbox',
    '#title'          => t('Use a Google Map to set latitude and longitude '),
    '#default_value'  => variable_get('location_usegmap', FALSE),
    '#description'    => t('If the gmap.module is installed and <a href="@enabled">enabled</a>, and this is setting is turned on, users that are allowed to manually enter latitude/longitude coordinates will be able to do so with an interactive Google Map.  You should also make sure you have entered a <a href="@google_maps_api_key">Google Maps API key</a> into your <a href="@gmap_module_settings">gmap module settings</a>.', array('@enabled' => url('admin/build/modules'), '@google_maps_api_key' => 'http://www.google.com/apis/maps', '@gmap_module_settings' => url('admin/settings/gmap'))),
// @@@ megapatch This is an idea, but I'd opt more for a warning here...
//    '#disabled'       => !module_exists('gmap'),
  );

  $form['location_locpick_macro'] = array(
    '#type' => 'textfield',
    '#title' => t('Location chooser macro'),
    '#size' => 50,
    '#maxlength' => 500,
    '#default_value' => variable_get('location_locpick_macro', '[gmap]'),
    '#description' => t('If you would like to change the macro used to generate the location chooser map, you can do so here. Note: Behaviors <em>locpick</em> and <em>collapsehack</em> are forced to be enabled and cannot be changed.'),
  );

  $form['location_garbagecollect'] = array(
    '#type' => 'checkbox',
    '#title' => t('Enable garbage collection of unused locations'),
    '#default_value' => variable_get('location_garbagecollect', TRUE),
    '#description' => t('If checked, the system can automatically garbage collect locations that are no longer referenced anywhere. It is recommended that you leave this checked.'),
  );

  $form['countries'] = array(
    '#collapsible'    => TRUE,
    '#collapsed'      => TRUE,
    '#description'    => t('Currently, your Drupal site is capable of supporting extra features (e.g., postal code proximity searches) for locations from this list of countries. You can narrow the list down to countries for which you want to support these extra features. It may be useful for performance to narrow down this list if most the locations in your system are from only a handful of the listed countries.'),
    '#title'          => t('Countries'),
    '#tree'           => FALSE,
    '#type'           => 'fieldset',
  );

  return system_settings_form($form);
}

/**
 * Settings page for map links.
 */
function _location_map_link_options_form() {
  $form = array();

  $form['countries'] = array(
    '#type' => 'markup',
    '#value' => ''
  );

  foreach (_location_supported_countries() as $country_iso => $country_name) {
    location_load_country($country_iso);

    $form['countries'][$country_iso] = array(
      '#type' => 'markup',
      '#value' => ''
    );

    $form['countries'][$country_iso]['label_'. $country_iso] = array(
      '#type' => 'markup',
      '#value' => $country_name
    );

    // Set up '#options' array for mapping providers for the current country
    $mapping_options = array();
    $provider_function = 'location_map_link_'. $country_iso .'_providers';
    $default_provider_function = 'location_map_link_'. $country_iso .'_default_providers';
    $checked = variable_get('location_map_link_'. $country_iso, function_exists($default_provider_function) ? $default_provider_function() : array());
    //print "Calling provider function $provider_function";
    if (function_exists($provider_function)) {
      foreach ($provider_function() as $name => $details) {
        $mapping_options[$name] = '<a href="'. $details['url'] .'">'. $details['name'] .'</a> (<a href="'. $details['tos'] .'">Terms of Use</a>)';
      }
    }

    if (count($mapping_options)) {
      $form['countries'][$country_iso]['location_map_link_'. $country_iso] = array(
        '#title' => '',
        '#type' => 'checkboxes',
        '#default_value' => $checked,
        '#options' => $mapping_options
      );
    }
    else {
      $form['countries'][$country_iso]['location_map_link_'. $country_iso] = array(
        '#type' => 'markup',
        '#value' => t('None supported.')
      );
    }
  }

  $form = system_settings_form($form);
  $form['#theme'] = 'location_map_link_options';
  return $form;
}

function location_geocoding_options_form() {
  $form = array();

  $form['countries'] = array();

  // First, we build two arrays to help us figure out on the fly whether a specific country is covered by a multi-country geocoder,
  // and what the details of the multi-country geocoder are
  // (1) Get list of geocoders
  $general_geocoders_list = location_get_general_geocoder_list();

  // (2) get data about each geocoder and the list of coutnries covered by each geocoder
  $general_geocoders_data = array();
  $general_geocoders_countries = array();
  foreach ($general_geocoders_list as $geocoder_name) {
    location_load_geocoder($geocoder_name);
    $info_function = $geocoder_name .'_geocode_info';
    if (function_exists($info_function)) {
      $general_geocoders_data[$geocoder_name] = $info_function();
    }

    $countries_function = $geocoder_name .'_geocode_country_list';
    if (function_exists($countries_function)) {
      $general_geocoders_countries[$geocoder_name] = $countries_function();
    }
  }

  foreach (_location_supported_countries() as $country_iso => $country_name) {
    location_load_country($country_iso);

    $geocoding_options = array();

    $form['countries'][$country_iso] = array(
      '#type' => 'markup',
      '#value' => ''
    );

    $form['countries'][$country_iso]['label_'. $country_iso] = array(
      '#type' => 'markup',
      '#value' => '<div id="'. $country_iso .'">'. $country_name .'</div>'
    );

    // Next, we look for options presented by country specific providers
    $country_specific_provider_function = 'location_geocode_'. $country_iso .'_providers';
    if (function_exists($country_specific_provider_function)) {
      foreach ($country_specific_provider_function() as $name => $details) {
        $geocoding_options[$name .'|'. $country_iso] = '<a href="'. $details['url'] .'">'. $details['name'] .'</a> (<a href="'. $details['tos'] .'">Terms of Use</a>)';
      }
    }

    foreach ($general_geocoders_list as $geocoder_name) {
      if (in_array($country_iso, $general_geocoders_countries[$geocoder_name])) {
        $geocoding_options[$geocoder_name] = '<a href="'. $general_geocoders_data[$geocoder_name]['url'] .'">'. $general_geocoders_data[$geocoder_name]['name'] .'</a> (<a href="'. $general_geocoders_data[$geocoder_name]['tos'] .'">Terms of Use</a>)';
      }
    }

    if (count($geocoding_options)) {
      $geocoding_options = array_merge(array('none' => t('None')), $geocoding_options);

      $form['countries'][$country_iso]['location_geocode_'. $country_iso] = array(
        '#type' => 'radios',
        '#default_value' => variable_get('location_geocode_'. $country_iso, 'none'),
        '#options' => $geocoding_options
      );
    }
    else {
      $form['countries'][$country_iso]['location_geocode_'. $country_iso] = array(
        '#type' => 'markup',
        '#value' => t('None supported.')
      );
    }

    $current_value = variable_get('location_geocode_'. $country_iso, 'none');
    if ($current_value == 'none') {
      $form['countries'][$country_iso]['location_geocode_config_link_'. $country_iso] = array(
        '#type' => 'markup',
        '#value' => t('No service selected for country.')
      );
    }
    else {
      $current_val_chopped = substr($current_value, 0, strpos($current_value, '|'));
      $geocode_settings_form_function_specific = 'location_geocode_'. $country_iso .'_'. $current_val_chopped .'_settings';
      $geocode_settings_form_function_general = $current_value .'_geocode_settings';

      if (function_exists($geocode_settings_form_function_specific)) {
        $form['countries'][$country_iso]['location_geocode_config_link_'. $country_iso] = array(
          '#type' => 'markup',
          '#value' => l(t('Configure parameters'), 'admin/settings/location/geocoding/'. $country_iso .'/'. $current_val_chopped)
        );
      }
      elseif (function_exists($geocode_settings_form_function_general)) {
        $form['countries'][$country_iso]['location_geocode_config_link_'. $country_iso] = array(
          '#type' => 'markup',
          '#value' => l(t('Configure parameters'), 'admin/settings/location/geocoding/'. $country_iso .'/'. $current_value)
        );
      }
      else {
        $form['countries'][$country_iso]['location_geocode_config_link_'. $country_iso] = array(
          '#type' => 'markup',
          '#value' => t('No configuration necessary for selected service.')
        );
      }
    }
  }
  $form = system_settings_form($form);
  $form['#theme'] = 'location_geocoding_options';
  if (!is_array($form['#submit'])) {
    $form['#submit'] = array('system_settings_form_submit' => array());
  }
  array_unshift($form['#submit'], array('location_geocoding_options_form_submit' => array()));

  return $form;
}

function location_geocoding_options_form_submit($form_id, $form_values) {
  $general_geocoders = location_get_general_geocoder_list();
  $general_geocoders_in_use = array();

  foreach ($form_values as $key => $value) {
    if (substr($key, 0, 17) == 'location_geocode_') {
      if (in_array($value, $general_geocoders)) {
        $general_geocoders_in_use[$value] = $value;
        variable_set($key, $value);
      }
    }
  }

  variable_set('location_general_geocoders_in_use', $general_geocoders_in_use);
}

function theme_location_map_link_options(&$form) {
  $header = array(array('align' => 'center', 'data' => '<center>'. t('Country') .'</center>'), array('align' => 'center', 'data' => '<center>'. t('Options') .'</center>'));
  $rows = array();
  foreach (element_children($form['countries']) as $country_iso) {
    $row = array();
    $row[] = array(
      'data' => drupal_render($form['countries'][$country_iso]['label_'. $country_iso])
    );
    $row[] = array(
      'data' => drupal_render($form['countries'][$country_iso]['location_map_link_'. $country_iso])
    );
    $rows[] = $row;
  }
  $output = theme('table', $header, $rows);
  foreach (element_children($form) as $key) {
    $output .= drupal_render($form[$key]);
  }
  $output .= drupal_render($form);
  return $output;
}

function theme_location_geocoding_options(&$form) {
  $header = array(
    array('align' => 'center', 'data' => '<center>'. t('Country') .'</center>'),
    array('align' => 'center', 'data' => '<center>'. t('Options') .'</center>'),
    array('align' => 'center', 'data' => '<center>'. t('Configure') .'</center>')
  );
  $rows = array();
  foreach (element_children($form['countries']) as $country_iso) {
    $row = array();
    $row[] = array(
      'data' => drupal_render($form['countries'][$country_iso]['label_'. $country_iso])
    );
    $row[] = array(
      'data' => drupal_render($form['countries'][$country_iso]['location_geocode_'. $country_iso])
    );
    $row[] = array(
      'data' => drupal_render($form['countries'][$country_iso]['location_geocode_config_link_'. $country_iso])
    );
    $rows[] = $row;
  }
  $output = theme('table', $header, $rows);
  foreach (element_children($form) as $key) {
    $output .= drupal_render($form[$key]);
  }
  $output .= drupal_render($form);
  return $output;
}