<?php
/**
 * OAI Data Provider command processor
 *
 * OAI Data Provider is not designed for human to retrieve data.
 *
 * This is an implementation of OAI Data Provider version 2.0.
 * @see http://www.openarchives.org/OAI/2.0/openarchivesprotocol.htm
 * 
 * It needs other files:
 * - oaidp-util.php : Utility functions
 * - xml_creater.php : XML generating functions
 *
 */

define('MY_URI', 'dev2.moodle.ufsc.br');

require_once('oaidp-util.php');
require_once('xml_creater.php');
require_once('oai2server.php');

/**
 * Identifier settings. It needs to have proper values to reflect the settings of the data provider.
 * Is MUST be declared in this order
 *
 * - $identifyResponse['repositoryName'] : compulsory. A human readable name for the repository;
 * - $identifyResponse['baseURL'] : compulsory. The base URL of the repository;
 * - $identifyResponse['protocolVersion'] : compulsory. The version of the OAI-PMH supported by the repository;
 * - $identifyResponse['earliestDatestamp'] : compulsory. A UTCdatetime that is the guaranteed lower limit of all datestamps recording changes, modifications, or deletions in the repository. A repository must not use datestamps lower than the one specified by the content of the earliestDatestamp element. earliestDatestamp must be expressed at the finest granularity supported by the repository.
 * - $identifyResponse['deletedRecord'] : the manner in which the repository supports the notion of deleted records. Legitimate values are no ; transient ; persistent with meanings defined in the section on deletion.
 * - $identifyResponse['granularity'] : the finest harvesting granularity supported by the repository. The legitimate values are YYYY-MM-DD and YYYY-MM-DDThh:mm:ssZ with meanings as defined in ISO8601.
 *
 */
$identifyResponse = array();
$identifyResponse["repositoryName"] = 'Moodle Neis';
$identifyResponse["baseURL"] = 'http://'.$_SERVER['SERVER_NAME'].$_SERVER['SCRIPT_NAME'];
$identifyResponse["protocolVersion"] = '2.0';
$identifyResponse['adminEmail'] = 'danielneis@gmail.com';
$identifyResponse["earliestDatestamp"] = '2013-01-01T12:00:00Z';
$identifyResponse["deletedRecord"] = 'no'; // How your repository handles deletions
                                           // no:             The repository does not maintain status about deletions.
                                           //                It MUST NOT reveal a deleted status.
                                           // persistent:    The repository persistently keeps track about deletions
                                           //                with no time limit. It MUST consistently reveal the status
                                           //                of a deleted record over time.
                                           // transient:   The repository does not guarantee that a list of deletions is
                                           //                maintained. It MAY reveal a deleted status for records.
$identifyResponse["granularity"] = 'YYYY-MM-DDThh:mm:ssZ';

$oai2 = new OAI2Server($_REQUEST, $identifyResponse,
    array(
        'ListMetadataFormats' =>
        function($identifier = '') {
            // throws new OAI2Exception('idDoesNotExist', '', $identifier) 
            return
                array('rif' => array('metadataPrefix'=>'rif',
                                     'schema'=>'http://services.ands.org.au/sandbox/orca/schemata/registryObjects.xsd',
                                     'metadataNamespace'=>'http://ands.org.au/standards/rif-cs/registryObjects/',
                               ),
                      'oai_dc' => array('metadataPrefix'=>'oai_dc',
                                        'schema'=>'http://www.openarchives.org/OAI/2.0/oai_dc.xsd',
                                        'metadataNamespace'=>'http://www.openarchives.org/OAI/2.0/oai_dc/',
                                        'record_prefix'=>'dc',
                                        'record_namespace' => 'http://purl.org/dc/elements/1.1/'));
        },

        'ListSets' =>
        function($resumptionToken = '') {
            return
                array (
                    array('setSpec'=>'class:collection', 'setName'=>'Collections'),
                    array('setSpec'=>'math', 'setName'=>'Mathematics') ,
                    array('setSpec'=>'phys', 'setName'=>'Physics'),
                    array('setSpec'=>'phdthesis', 'setName'=>'PHD Thesis',
                          'setDescription'=>
                              '<oai_dc:dc xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" '.
                              ' xmlns:dc="http://purl.org/dc/elements/1.1/" '.
                              ' xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" '.
                              ' xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ '.
                              ' http://www.openarchives.org/OAI/2.0/oai_dc.xsd"> '.
                              ' <dc:description>This set contains metadata describing '.
                              ' electronic music recordings made during the 1950ies</dc:description> '.
                              ' </oai_dc:dc>'));
        },

        'ListRecords' =>
        function($metadataPrefix, $from = '', $until = '', $set = '', $count = false, $deliveredRecords = 0, $maxItems = 0) {
            // throws new OAI2Exception('noRecordsMatch')
            // throws new OAI2Exception('noSetHierarchy')
            if ($count) {
                return 10;
            }
            return array();
        },

        'GetRecord' =>
        function($identifier, $metadataPrefix) {
            // throws new OAI2Exception('idDoesNotExist', '', $identifier) if record not found

            return array('identifier' => 'dev.testing.pmh',
                         'datestamp' => date('Y-m-d-H:s'),
                         'set' => 'class:activity',
                         'metadata' => array(
                             'container_name' => 'oai_dc:dc',
                             'container_attributes' => array(
                                 'xmlns:oai_dc' => "http://www.openarchives.org/OAI/2.0/oai_dc/",
                                 'xmlns:dc' => "http://purl.org/dc/elements/1.1/",
                                 'xmlns:xsi' => "http://www.w3.org/2001/XMLSchema-instance",
                                 'xsi:schemaLocation' =>
                                 'http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd'
                             ),
                             'fields' => array(
                                 'dc:title' => 'Testing records',
                                 'dc:author' => 'Neis'
                             )
                         ));
        },
    )
);