<?php
// $Id: cmis_alfresco.module,v 1.3 2009-04-21 12:39:56 cbalan Exp $

/**
 * Including cmisapi implementation.
 */
module_load_include('cmis.inc', 'cmis_alfresco');

/**
 * Implementation of hook_cmis_info() for CMIS Alfresco module.
 */
function cmis_alfresco_cmis_info() {
  return array (
    'cmis_alfresco' => array (
      'name' => t('CMIS Alfresco'),
      'module' => 'cmis_alfresco',
      'description' => t('Alfresco CMIS client'),
    ),
  );
}

/**
 * Implementation of hook_menu() for Alfresco CMIS module.
 * Add Alfresco setting link to admin menu.
 */
function cmis_alfresco_menu() {
  $items['admin/settings/cmis/alfresco'] = array (
    'title' => 'Alfresco Settings',
    'description' => 'Connection settings to Alfresco repository',
    'page callback' => 'drupal_get_form',
    'page arguments' => array ('cmis_alfresco_admin_settings'),
    'access callback' => 'user_access',
    'access arguments' => array ('administer alfresco'),

    
  );
  return $items;
}

/**
 * Prepare and generate entry form for Alfresco settings.
 */
function cmis_alfresco_admin_settings() {
  $form['cmis_alfresco_settings'] = array (
    '#type' => 'fieldset',
    '#title' => t('Alfresco CMIS Settings'), 
    '#description' => t('Settings for Alfreso Server including Server Endpoint, Username and password for connection.'), 
    '#collapsible' => FALSE, 
    '#collapsed' => FALSE,
  );

  $form['cmis_alfresco_settings']['cmis_alfresco_endpoint'] = array (
    '#type' => 'textfield',
    '#title' => t('Repository endpoint'), 
    '#description' => t('Specify the Alfresco Endpoint to integrate with.'), 
    '#default_value' => variable_get('cmis_alfresco_endpoint', 'http://localhost:8080/alfresco'),
  );

  $form['cmis_alfresco_settings']['cmis_alfresco_user'] = array (
    '#type' => 'textfield',
    '#title' => t('Repository user'), 
    '#description' => t('Specify the user name to use to authenticate with the repository.'), 
    '#default_value' => variable_get('cmis_alfresco_user', 'admin'),
  );

  $form['cmis_alfresco_settings']['cmis_alfresco_password'] = array (
    '#type' => 'password',
    '#title' => t('Repository password'), 
    '#description' => t('Specify the password to use to authenticate with the repository.'), 
    '#default_value' => ''
  );

  return system_settings_form($form);
}

/**
 * Validate Setting inputs for Alfresco
 */
function cmis_alfresco_admin_settings_validate($form, & $form_state) {

  // endpoint is required
  $endpoint = $form_state['values']['cmis_alfresco_endpoint'];
  if ($endpoint == '') {
    form_set_error('cmis_alfresco_endpoint', t('You must specify the Alfresco endpoint.'));
  }

  // see if the endpoint is okay
  /*    
      $response = drupal_http_request($endpoint);
      if ($response->code != 200) {
          form_set_error('cmis_alfresco_endpoint', t('Error received from endpoint: ' . $response->code));
      }
  */
  // user and password are required
  if (empty($form_state['values']['cmis_alfresco_user'])) {
    form_set_error('cmis_alfresco_user', t('You must specify the repository user.'));
  }

  if (empty($form_state['values']['cmis_alfresco_password'])) {
    form_set_error('cmis_alfresco_password', t('You must specify the repository password.'));
  }else {
  	$form_state['values']['cmis_alfresco_password'] = base64_encode($form_state['values']['cmis_alfresco_password']);
  }

  /* 
   * DG: This can't be done with the current API because the values have not been persisted yet
   * 
      // attempt to authenticate
      if (cmis_alfresco_utils_get_ticket() == '') {
          form_set_error('', t('Could not authenticate with endpoint.'));
      } else {
          drupal_set_message('Alfresco Repo Info:<br/>' . cmis_alfresco_info());
      }
  */

}

/**
 * Return permissions for the Alfresco module.
 */
function cmis_alfresco_perm() {
  $perms = array (
    'administer alfresco',
    'access alfresco',
  );
  return $perms;
}

/**
 * Implementation of hook_form_alter for Alfresco CMIS search
 * @param $formId
 * @param $form
 * @return unknown_type
 */

function cmis_alfresco_form_cmis_query_form_alter(& $form, $form_state) {
  $opensearch = array (
    '#type' => 'fieldset',
    '#title' => t('OpenSearch'), 
    '#collapsible' => TRUE, 
    '#collapsed' => FALSE,
  );

  $opensearch['cmis_alfresco_opensearch_keyword'] = array (
    '#type' => 'textfield',
    '#title' => t('Keyword'), 
    '#description' => t('Search the repository using opensearch support'), 
    '#attributes' => array (),
  );

  $opensearch['cmis_alfresco_opensearch_submit'] = array (
    '#type' => 'submit',
    '#value' => t('Search'), 
    '#submit' => array ('cmis_alfresco_opensearch'),
  );

  $form['opensearch'] = $opensearch;

  // little hack to prevent form submit on "enter"
  drupal_add_js('$(document).ready(function(){
      $("#edit-cmis-alfresco-opensearch-keyword").bind("keypress", function(e) {
          if(e.keyCode==13)$("#edit-cmis-alfresco-opensearch-submit").click();
      });});', 'inline');

}

function cmis_alfresco_opensearch($form, & $form_state) {
  $form_state['storage']['query_result'] = cmis_alfresco_open_search($form_state['values']['cmis_alfresco_opensearch_keyword']);
}

/**
 * Executes open search and process search return.
 * $query CMIS SQL query.
 */
function cmis_alfresco_open_search($keyword, $p = 1) {
  module_load_include('utils.inc', 'cmis_alfresco');
  module_load_include('utils.inc', 'cmis_alfresco', 'opensearch');

  $xml = cmis_alfresco_utils_invoke_service('/api/search/keyword.atom?q=' . urlencode($keyword) . '&p=' . $p, 'ticket');
  if (false != $xml) {
    // Process the returned XML
    $contents = "<br/><b>Search Results</b><br/>";

    $header = array (t('name'), t('author'), t('last modified'), t('score'));
    $file_img = theme('image', drupal_get_path('module', 'alfresco') . '/images/file.png');
    $entries = opensearch_utils_process_opensearch_xml($xml, '//D:entry');

    foreach ($entries as $entry) {
      $summary = $entry->summary;
      $score = opensearch_utils_opensearch_xml_get_value($entry, 'relevance:score');
      $updated = date_create($entry->updated);
      $updatedStr = date_format($updated, 'n/j/Y g:i A');
      $alfIcon = $entry->icon;
      $documentLink = l($entry->title, 'cmis/get', array ('query' => array ('id' => $entry->id)));

      $rows[] = array ('<img src="' . $alfIcon . '"/>' . $documentLink, $entry->author->name, $updatedStr, $score);
    }

    //$contents .= '</ul>';
    $contents .= theme('table', $header, $rows);
    $feed = opensearch_utils_process_opensearch_xml($xml, '/D:feed');
    $feed = $feed[0];
    $total_items = (int) opensearch_utils_opensearch_xml_get_value($feed, 'opensearch:totalResults');
    $items_per_page = (int) opensearch_utils_opensearch_xml_get_value($feed, 'opensearch:itemsPerPage');

    if (fmod($total_items, $items_per_page) == 0) {
      $last_page_number = floor($total_items / $items_per_page);
    } 
    else {
      $last_page_number = floor($total_items / $items_per_page) + 1;
    }

    // Add pagination bar
    /* Disabled pagination
    $base_search_url = '/cmis/query/?keyword='.$keyword.'&c='.$items_per_page.'&p=';
    
    $contents .= '<div class="pagination">';
    $contents .= '<a href="'.$base_search_url.'1">first</a>';
    
    for($counter=1; $counter<=$last_page_number; $counter+=1){
        if($p!= $counter){
            $contents.=' <a href="'.$base_search_url.$counter.'">'.$counter.'</a>';
        }else{
            $contents.=' '.$counter;
        }
    }
    
    $contents .= ' <a href="'.$base_search_url.$last_page_number.'">last</a>';
    $contents .= '</div>';
    */
  } 
  else {
    $contents = 'Error';
  }

  return $contents;
}