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

//=== Menu structure ===

// Check that this page is called with the correct action (to prevent illegal access)
if( !is_valid_action("version_new","version_duplicate","version_info","version_change") ) {
  // 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("version_new")) {
    // new item: generated temporary identifier as index in the array
    $t = gettimeofday(TRUE);
    $_SESSION[$_PAGE_INFO['id']]['version_id']            = "tmp_" . sprintf("%u%06u", $t, ($t - floor($t)) * 1000);
    $_SESSION[$_PAGE_INFO['id']]['version_info']          = array();
    $_SESSION[$_PAGE_INFO['id']]['version_doc']           = array();
    $_SESSION[$_PAGE_INFO['id']]['version_changelog']     = array();
    $_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'] = array();

    // save the system component from system component page, or the search screen
    if( is_valid_call("system_component*") ) {
      $_SESSION[$_PAGE_INFO['id']]['version_info']['syscomp'] = $_SESSION[$_PAGE_INFO['id']]['syscomp_id'];
    }
    else {
      $_SESSION[$_PAGE_INFO['id']]['version_info']['syscomp'] = $_SESSION[$_PAGE_INFO['id']]['search']['s&o']['syscomp_id'];
    }

    if( is_valid_call("system_component*") ) {
      $_SESSION[$_PAGE_INFO['id']]['version_info']['device'] = $_SESSION[$_PAGE_INFO['id']]['syscomp_info']['device'];
    }
  }
  else if( is_valid_action("version_info","version_duplicate","version_change") ) {
    // get the identifier from either the command-line or the search screen
    if( isset($_GET['version_id']) ) {
      // set change log identifier from the URL
      $_SESSION[$_PAGE_INFO['id']]['version_id'] = decrypt($_GET['version_id'], "version_id_" . $_SESSION[$_PAGE_INFO['id']]['login']['user']['id']);
    }
    else {
      $_SESSION[$_PAGE_INFO['id']]['version_id'] = $_SESSION[$_PAGE_INFO['id']]['search']['s&o']['version_id'];
    }

    if (isset($_SESSION[$_PAGE_INFO['id']]['version_id'])) {
      if(
        is_valid_call("system_component_new","system_component_duplicate","system_component_change") &&
        is_array($_SESSION[$_PAGE_INFO['id']]['syscomp_version'][$_SESSION[$_PAGE_INFO['id']]['version_id']])
      ) {
        // version is stored in the system component info array
        $version = $_SESSION[$_PAGE_INFO['id']]['syscomp_version'][$_SESSION[$_PAGE_INFO['id']]['version_id']];
        $version['id'] = $_SESSION[$_PAGE_INFO['id']]['version_id'];
      }
      else {
        $version = db_fetch_system_version($_SESSION[$_PAGE_INFO['id']]['version_id']);
      }
      
      if( $version ) {
        $_SESSION[$_PAGE_INFO['id']]['version_info'] = $version;

        // pre-fetch the documents and other uploads
        if( is_array($_SESSION[$_PAGE_INFO['id']]['syscomp_version_doc'][$version['id']]) ) {
          // version is stored in the system component info array
          $_SESSION[$_PAGE_INFO['id']]['version_doc'] = $_SESSION[$_PAGE_INFO['id']]['syscomp_version_doc'][$version['id']];
        }
        else {
          // fetch the documents from the database
          $_SESSION[$_PAGE_INFO['id']]['version_doc'] = db_fetch_files($version['id'], "changelog_versie_documenten", FALSE, "ASC");
        }

        // pre-fetch the change log items
        if(
          is_valid_call("system_component_new","system_component_duplicate","system_component_change") &&
          is_array($_SESSION[$_PAGE_INFO['id']]['syscomp_version'][$version['id']]['changelog'])
        ) {
          if( is_valid_action("version_duplicate") ) {
            $_SESSION[$_PAGE_INFO['id']]['version_changelog'] = array();
            foreach( $_SESSION[$_PAGE_INFO['id']]['syscomp_version'][$version['id']]['changelog'] as $change ) {
              // insert a copy of this change
              $change['id'] = "tmp_copy_" . $change['id'];
              $_SESSION[$_PAGE_INFO['id']]['version_changelog'][$change['id']] = $change;
            }
            // copy the documents
            $_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'] = array();
            foreach( $_SESSION[$_PAGE_INFO['id']]['syscomp_version'][$version['id']]['changelog_doc'] as $changelog_id => $documents ) {
              foreach( $documents as $doc ) {
                // insert a copy of the document
                $changelog_id = "tmp_copy_" . $changelog_id;
                $_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'][$changelog_id][] = db_duplicate_file($doc);
              }
            }
          }
          else {
            $_SESSION[$_PAGE_INFO['id']]['version_changelog']     = $_SESSION[$_PAGE_INFO['id']]['syscomp_version'][$version['id']]['changelog'];
            $_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'] = $_SESSION[$_PAGE_INFO['id']]['syscomp_version'][$version['id']]['changelog_doc'];
          }
        }
        else {
          $_SESSION[$_PAGE_INFO['id']]['version_changelog'] = array();
          if( is_valid_action("version_duplicate") ) {
            $_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'] = array();
          }
          else {
            // change log documentation will be fetched when needed
            $_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'] = NULL;
          }

          $changelog_items = db_fetch_version_changelog($version['id']);
          if( $changelog_items ) foreach( $changelog_items as $changelog_item ) {
            // save off the identifier; it will be replaced when the items are duplicated
            if( is_valid_action("version_duplicate") ) {
              $changelog_id = "tmp_copy_" . $changelog_item['id'];
              
              // fetch the documents for the original change
              $documents = db_fetch_files($changelog_item['id'], "changelog_versie_change_documenten", FALSE, "ASC");
              // copy the documents for this change
              foreach( $documents as $doc ) {
                $_SESSION[$_PAGE_INFO['id']]['version_changelog_doc'][$changelog_id][] = db_duplicate_file($doc);
              }
              // clean-up
              unset($documents);
              
              // set the new, temporary identifier
              $changelog_item['id'] = $changelog_id;
            }

            $_SESSION[$_PAGE_INFO['id']]['version_changelog'][$changelog_item['id']] = $changelog_item;
          }
          // clean up
          unset($changelog_items);
        }

        if( is_valid_action("version_duplicate") ) {
          // the version identifier is invalid, as we are copying the original data
          $_SESSION[$_PAGE_INFO['id']]['version_id'] = "tmp_copy_" . $version['id'];

          // copy the documents
          $documents = $_SESSION[$_PAGE_INFO['id']]['version_doc'];
          $_SESSION[$_PAGE_INFO['id']]['version_doc'] = array();
          foreach( $documents as $doc ) {
            $_SESSION[$_PAGE_INFO['id']]['version_doc'][] = db_duplicate_file($doc);
          }
          // clean-up
          unset($documents);
        }
        
        // clean-up
        unset($version);
      }
      else {
        // ID not valid!!! => Redirect back to search menu
        header("Location: ?id=" . $_PAGE_INFO['id'] . "&href=page/menu_version_search&action=" . current_action(TRUE));
        trigger_error("Version ID not valid", E_USER_ERROR);
      }
    }
    else {
      // ID not selected
      header("Location: ?id=" . $_PAGE_INFO['id'] . "&href=page/menu_version_search&action=" . current_action(TRUE));
      trigger_error("Version ID not set", E_USER_ERROR);
    }
  }

  // the version data is closely linked 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']);
  }

  // Sort change log?
  if( is_valid_return("changelog_add") ) {
    function uasort_changelog($a,$b) {
      return $a['volgorde'] - $b['volgorde'];
    }

    uasort($_SESSION[$_PAGE_INFO['id']]['version_changelog'], "uasort_changelog");
  }

  // 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[$_PAGE_INFO['id']]['version_info']['y_position'])) ? ($_SESSION[$_PAGE_INFO['id']]['version_info']['y_position']) : 0;
  print_xml_header($y_position, $extra_header_HTML);

  // Include info content
  include("menu_version_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);
}

?>