<?php

/*
 +--------------------------------------------------------------------+
 | CiviCRM version 2.2                                                |
 +--------------------------------------------------------------------+
 | Copyright CiviCRM LLC (c) 2004-2009                                |
 +--------------------------------------------------------------------+
 | This file is a part of CiviCRM.                                    |
 |                                                                    |
 | CiviCRM is free software; you can copy, modify, and distribute it  |
 | under the terms of the GNU Affero General Public License           |
 | Version 3, 19 November 2007.                                       |
 |                                                                    |
 | CiviCRM is distributed in the hope that it will be useful, but     |
 | WITHOUT ANY WARRANTY; without even the implied warranty of         |
 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.               |
 | See the GNU Affero General Public License for more details.        |
 |                                                                    |
 | You should have received a copy of the GNU Affero General Public   |
 | License along with this program; if not, contact CiviCRM LLC       |
 | at info[AT]civicrm[DOT]org. If you have questions about the        |
 | GNU Affero General Public License or the licensing of CiviCRM,     |
 | see the CiviCRM license FAQ at http://civicrm.org/licensing        |
 +--------------------------------------------------------------------+
*/

/**
 *
 * @package CRM
 * @copyright CiviCRM LLC (c) 2004-2009
 * $Id$
 *
 */

class CRM_Utils_Sunlight {
    static $_apiURL = 'http://api.sunlightlabs.com/';
    static $_apiKey = null;

    static function makeAPICall( $uri ) {
        require_once 'HTTP/Request.php';
        $params = array( 'method' => HTTP_REQUEST_METHOD_GET,
                         'allowRedirects' => false );

        $request =& new HTTP_Request( self::$_apiURL . $uri, $params );
        $result = $request->sendRequest( );
        if ( PEAR::isError( $result ) ) {
            CRM_Core_Error::fatal( $result->getMessage( ) );
        }
        if ( $request->getResponseCode( ) != 200 ) {
            CRM_Core_Error::fatal( ts( 'Invalid response code received from Sunlight servers: %1', 
                                       array(1 => $request->getResponseCode())) );
        }
        $string = $request->getResponseBody( );
        return simplexml_load_string( $string );
    }

    static function getCityState( $zipcode ) {
        $key  = self::$_apiKey;
        $uri = "places.getCityStateFromZip.php?zip={$zipcode}&apikey={$key}&output=xml";
        $xml  = self::makeAPICall( $uri );

        return array( $xml->city, $xml->state );
    }

    static function getDetailedInfo( $peopleID ) {
        $key  = self::$_apiKey;
        $uri  = "people.getPersonInfo.php?id={$peopleID}&apikey={$key}&output=xml";
        $xml  = self::makeAPICall( $uri );

        $result = array( );
        $fields = array( 'title'           => 'title',
                         'firstname'       => 'first_name',
                         'lastname'        => 'last_name',
                         'gender'          => 'gender',
                         'party'           => 'party',
                         'congress_office' => 'address',
                         'phone'           => 'phone',
                         'email'           => 'email',
                         'congresspedia'   => 'url',
                         'photo'           => 'image_url',
                         'webform'         => 'contact_url', );

        foreach ( $fields  as $old => $new ) {
            $result[$new] = (string ) $xml->$old;
        }

        $result['image_url'] =
            'http://sunlightlabs.com/widgets/popuppoliticians/resources/images/' . 
            $result['image_url'];
            
        return $result;
    }

    static function getPeopleInfo( $uri ) {
        $xml = self::makeAPICall( $uri );
        
        $result = array( );
        foreach ( $xml->entity_id_list->entity_id as $key => $value ) {
            $result[] = self::getDetailedInfo( $value );
        }
        return $result;
    }

    static function getRepresentativeInfo( $city, $state ) {
        if ( ! $city ||
             ! $state ) {
            return null;
        }
        $key  = self::$_apiKey;
        $city = urlencode( $city );
        $uri  = "people.reps.getRepsFromCityState.php?city={$city}&state={$state}&apikey={$key}&output=xml";
        return self::getPeopleInfo( $uri );
    }

    static function getSenatorInfo( $state ) {
        if ( ! $state ) {
            return null;
        }

        $key = self::$_apiKey;
        $uri = "people.sens.getSensFromState.php?state={$state}&apikey={$key}&output=xml";
        return self::getPeopleInfo( $uri );
    }

    static function getInfo( $city, $state, $zipcode = null ) { 
        if ( $zipcode ) {
            list( $city, $state ) = self::getCityState( $zipcode );
        }

        $reps = self::getRepresentativeInfo( $city, $state );
        $sens = self::getSenatorInfo( $state );

        $result = array( );
        if ( is_array( $reps ) ) {
            $result = array_merge( $result, $reps );
        }
        if ( is_array( $sens ) ) {
            $result = array_merge( $result, $sens );
        }

        return $result;
    }
}