<?php
/** \file scripts\page\menu_changelog_info.php
 *  \brief DI webinterface menu system version maintenance script.
 *  \author Jack Weeland, Core|Vision
 *  \version $Revision: 26247 $
 *  \date $Date: 2016-02-29 10:40:22 +0100 (Mon, 29 Feb 2016) $
 *
 * This file contains the menu system change log maintenance
 *
 */
 
//=== Menu structure ===

// Check that this page is called with the correct action (to prevent illegal access)
if( !is_valid_action("changelog_new","changelog_duplicate","changelog_change","changelog_info") ) {
  // Redirect page back to login page
  force_logout(_("No valid rights"), "Invalid action: " . current_action(TRUE));
}
  
$page = new MTinfoPage();

//===========================================

// Verify project/rights and log
if(  $page->user_has_rights() ) {
  if( $_SESSION[$_PAGE_INFO['id']]['recall_counter'] ) {
    // Return from call
  }
  else if( is_valid_action("changelog_new") ) {
    // new item: generated temporary identifier as index in the array
    $t = gettimeofday(TRUE);
    $_SESSION[$_PAGE_INFO['id']]['changelog_id']   = "tmp_" . sprintf("%u%06u", $t, ($t - floor($t)) * 1000);
    $_SESSION[$_PAGE_INFO['id']]['changelog_doc']  = array();
    $_SESSION[$_PAGE_INFO['id']]['changelog_info'] = array();

    // save the version identifier from version entry page, or the search screen
    if( is_valid_call("version_new","version_duplicate","version_change") ) {
      $_SESSION[$_PAGE_INFO['id']]['changelog_info']['versie']   = $_SESSION[$_PAGE_INFO['id']]['version_id'];
      $_SESSION[$_PAGE_INFO['id']]['changelog_info']['volgorde'] = array_max($_SESSION[$_PAGE_INFO['id']]['version_info']['changelog'], "volgorde", 0) + 1;
      // link device types and system components from the version info
      $_SESSION[$_PAGE_INFO['id']]['changelog_info']['device']   = $_SESSION[$_PAGE_INFO['id']]['version_info']['device'];
      $_SESSION[$_PAGE_INFO['id']]['changelog_info']['syscomp']  = $_SESSION[$_PAGE_INFO['id']]['version_info']['syscomp'];
    }
    else {
      $_SESSION[$_PAGE_INFO['id']]['changelog_info']['versie']   = $_SESSION[$_PAGE_INFO['id']]['search']['s&o']['version_id'];
      $_SESSION[$_PAGE_INFO['id']]['changelog_info']['volgorde'] = 0;
    }
  }
  else if( is_valid_action("changelog_info","changelog_change","changelog_duplicate") ) {
    if( isset($_GET['changelog_id']) ) {
      // set change log identifier from the URL
      $_SESSION[$_PAGE_INFO['id']]['changelog_id'] = decrypt($_GET['changelog_id'], "changelog_id_" . $_SESSION[$_PAGE_INFO['id']]['login']['user']['id']);
    }
    else {
      // set change log identifier from the search screen
      $_SESSION[$_PAGE_INFO['id']]['changelog_id'] = $_SESSION[$_PAGE_INFO['id']]['search']['s&o']['changelog_id'];
    }

    if( isset($_SESSION[$_PAGE_INFO['id']]['changelog_id']) ) {
      if( is_array($_SESSION[$_PAGE_INFO['id']]['version_changelog'][$_SESSION[$_PAGE_INFO['id']]['changelog_id']]) ) {
        // change log item is stored in the version info array
        $_SESSION[$_PAGE_INFO['id']]['changelog_info'] = $_SESSION[$_PAGE_INFO['id']]['version_changelog'][$_SESSION[$_PAGE_INFO['id']]['changelog_id']];
      }
      else {
        // read the change log items and its documents
        $_SESSION[$_PAGE_INFO['id']]['changelog_info'] = db_fetch_version_change($_SESSION[$_PAGE_INFO['id']]['changelog_id']);
      }

      if( is_array($_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'][$_SESSION[$_PAGE_INFO['id']]['changelog_id']]) ) {
        // change log item is stored in the version info array
        $_SESSION[$_PAGE_INFO['id']]['changelog_doc']  = $_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'][$_SESSION[$_PAGE_INFO['id']]['changelog_id']];
      }
      else {
        // read the change log items and its documents
        $_SESSION[$_PAGE_INFO['id']]['changelog_doc']  = db_fetch_files($_SESSION[$_PAGE_INFO['id']]['changelog_id'], "changelog_versie_change_documenten", FALSE, "ASC");
      }
      
      // invalidate the identifier when duplicating an item
      if( is_valid_action("changelog_duplicate") ) {
        $_SESSION[$_PAGE_INFO['id']]['changelog_id'] = "tmp_copy_" . $_SESSION[$_PAGE_INFO['id']]['changelog_id'];
        
        // copy the documents
        $documents = $_SESSION[$_PAGE_INFO['id']]['changelog_doc'];
        $_SESSION[$_PAGE_INFO['id']]['changelog_doc'] = array();
        foreach( $documents as $doc ) {
          $_SESSION[$_PAGE_INFO['id']]['changelog_doc'][] = db_duplicate_file($doc);
        }
        // clean up
        unset($documents);
      }
    }
    else {
      // wrong call; redirect back to login page
      force_logout(_("No valid rights"), "Change log id not set");
    }
  }

  // the change log is closely linked to a version; fetch the version info
  //  if not set (when this page is called bypassing 'version_info')
  if( !is_valid_call("version*") ) {
    $_SESSION[$_PAGE_INFO['id']]['version_info'] = db_fetch_system_version($_SESSION[$_PAGE_INFO['id']]['changelog_info']['versie']);
  }
  // as well as to the system component; fetch it if not set (when this page is called bypassing 'syscomp_info')
  if( !is_valid_call("system_component*") ) {
    $_SESSION[$_PAGE_INFO['id']]['syscomp_info'] = db_fetch_system_component($_SESSION[$_PAGE_INFO['id']]['version_info']['syscomp']);
  }

  // Nested call?
  if( !$_SESSION[$_PAGE_INFO['id']]['recall_counter'] ) {
    $_SESSION[$_PAGE_INFO['id']]['changelog_info']['return_action'] = $_SESSION[$_PAGE_INFO['id']]['return_action'];
  }

  // Add calendar to header
  $extra_header_HTML = "<script type=\"text/javascript\" src=\"" . JAVA_DIR . "calender.js\"></script>\n";  

  // Show page header
  $y_position = (isset($_SESSION[$_PAGE_INFO['id']]['changelog_info']['y_position'])) ? ($_SESSION[$_PAGE_INFO['id']]['changelog_info']['y_position']) : 0;
  print_xml_header($y_position, $extra_header_HTML);

  // Include info content
  include("menu_changelog_info_content.php");

  // Show page footer
  print_page_footer();
}
else {
  // Redirect page back to login page
  force_logout(_("No valid rights"), "No rights for menu " . $page->menu . ": " . $page->rights);
}

?>