<?php

/*

 * Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between

 *

 * This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

 *

 * This program 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 General Public License for details.

 */

function page_Admin_UserRanks()

{

  global $db, $session, $paths, $template, $plugins; // Common objects

  global $lang;

  if ( $session->auth_level < USER_LEVEL_ADMIN || $session->user_level < USER_LEVEL_ADMIN )

  {

    $login_link = makeUrlNS('Special', 'Login/' . $paths->nslist['Special'] . 'Administration', 'level=' . USER_LEVEL_ADMIN, true);

    echo '<h3>' . $lang->get('adm_err_not_auth_title') . '</h3>';

    echo '<p>' . $lang->get('adm_err_not_auth_body', array( 'login_link' => $login_link )) . '</p>';

    return;

  }

  // This should be a constant somewhere

  $protected_ranks = array(

      RANK_ID_MEMBER,

      RANK_ID_MOD,

      RANK_ID_ADMIN,

      RANK_ID_GUEST

    );

  if ( $paths->getParam(0) == 'action.json' )

  {

    // ajax call, try to decode json request

    header('Content-type: application/json');

    if ( !isset($_POST['r']) )

    {

      echo enano_json_encode(array(

          'mode' => 'error',

          'error' => 'Missing JSON request payload'

        ));

      return true;

    }

    try

    {

      $request = enano_json_decode($_POST['r']);

    }

    catch ( Exception $e )

    {

      echo enano_json_encode(array(

          'mode' => 'error',

          'error' => 'Invalid JSON request payload'

        ));

      return true;

    }

    if ( !isset($request['mode']) )

    {

      echo enano_json_encode(array(

          'mode' => 'error',

          'error' => 'JSON request payload does not contain required parameter "mode"'

        ));

      return true;

    }

    // we've got it

    switch ( $request['mode'] )

    {

      case 'get_rank':

        // easy enough, get a rank from the DB

        $rank_id = intval(@$request['rank_id']);

        if ( empty($rank_id) )

        {

          echo enano_json_encode(array(

              'mode' => 'error',

              'error' => 'Missing rank ID'

            ));

          return true;

        }

        // query and fetch

        $q = $db->sql_query('SELECT rank_id, rank_title, rank_style FROM ' . table_prefix . "ranks WHERE rank_id = $rank_id;");

        if ( !$q || $db->numrows() < 1 )

          $db->die_json();

        $row = $db->fetchrow();

        $db->free_result();

        // why does mysql do this?

        $row['rank_id'] = intval($row['rank_id']);

        echo enano_json_encode($row);

        break;

      case 'save_rank':

        // easy enough, get a rank from the DB

        $rank_id = intval(@$request['rank_id']);

        // note - an empty rank_style field is permitted

        if ( empty($rank_id) )

        {

          echo enano_json_encode(array(

              'mode' => 'error',

              'error' => 'Missing rank ID'

            ));

          return true;

        }

        if ( empty($request['rank_title']) )

        {

          echo enano_json_encode(array(

              'mode' => 'error',

              'error' => $lang->get('acpur_err_missing_rank_title')

            ));

          return true;

        }

        // perform update

        $rank_title = $db->escape($request['rank_title']);

        $rank_style = $db->escape(@$request['rank_style']);

        $q = $db->sql_query('UPDATE ' . table_prefix . "ranks SET rank_title = '$rank_title', rank_style = '$rank_style' WHERE rank_id = $rank_id;");

        // regenerate the ranks cache

        generate_cache_userranks();

        echo enano_json_encode(array(

            'mode' => 'success'

          ));

        break;

      case 'create_rank':

        if ( empty($request['rank_title']) )

        {

          echo enano_json_encode(array(

              'mode' => 'error',

              'error' => $lang->get('acpur_err_missing_rank_title')

            ));

          return true;

        }

        $rank_title = $db->escape($request['rank_title']);

        $rank_style = $db->escape(@$request['rank_style']);

        // perform insert

        $q = $db->sql_query('INSERT INTO ' . table_prefix . "ranks ( rank_title, rank_style ) VALUES\n"

                          . "  ( '$rank_title', '$rank_style' );");

        if ( !$q )

          $db->die_json();

        $rank_id = $db->insert_id();

        if ( !$rank_id )

        {

          echo enano_json_encode(array(

              'mode' => 'error',

              'error' => 'Refetch of rank ID failed'

            ));

          return true;

        }

        // regenerate the ranks cache

        generate_cache_userranks();

        echo enano_json_encode(array(

            'mode' => 'success',

            'rank_id' => $rank_id

          ));

        break;

      case 'delete_rank':

        // nuke a rank

        $rank_id = intval(@$request['rank_id']);

        if ( empty($rank_id) )

        {

          echo enano_json_encode(array(

              'mode' => 'error',

              'error' => 'Missing rank ID'

            ));

          return true;

        }

        // is this rank protected (e.g. a system rank)?

        if ( in_array($rank_id, $protected_ranks) )

        {

          echo enano_json_encode(array(

              'mode' => 'error',

              'error' => $lang->get('acpur_err_cant_delete_system_rank')

            ));

          return true;

        }

        // unset any user and groups that might be using it

        $q = $db->sql_query('UPDATE ' . table_prefix . "users SET user_rank = NULL WHERE user_rank = $rank_id;");

        if ( !$q )

          $db->die_json();

        $q = $db->sql_query('UPDATE ' . table_prefix . "groups SET group_rank = NULL WHERE group_rank = $rank_id;");

        if ( !$q )

          $db->die_json();

        // now remove the rank itself

        $q = $db->sql_query('DELETE FROM ' . table_prefix . "ranks WHERE rank_id = $rank_id;");

        if ( !$q )

          $db->_die();

        // regenerate the ranks cache

        generate_cache_userranks();

        echo enano_json_encode(array(

            'mode' => 'success'

          ));

        break;

      default:

        echo enano_json_encode(array(

          'mode' => 'error',

          'error' => 'Unknown requested operation'

        ));

      return true;

    }

    return true;

  }

  // draw initial interface

  // yes, four paragraphs of introduction. Suck it up.

  echo '<h3>' . $lang->get('acpur_heading_main') . '</h3>';

  echo '<p>' . $lang->get('acpur_intro_para1') . '</p>';

  echo '<p>' . $lang->get('acpur_intro_para2') . '</p>';

  echo '<p>' . $lang->get('acpur_intro_para3') . '</p>';

  echo '<p>' . $lang->get('acpur_intro_para4') . '</p>';

  // fetch ranks

  $q = $db->sql_query('SELECT rank_id, rank_title, rank_style FROM ' . table_prefix . "ranks ORDER BY rank_title ASC;");

  if ( !$q )

    $db->_die();

  echo '<div class="rankadmin-left" id="admin_ranks_container_left">';

  while ( $row = $db->fetchrow() )

  {

    // format rank according to what its users look like

    // rank titles can be stored as language strings, so have the language manager fetch this

    // normally it refetches (which takes time) if a string isn't found, but it won't try to fetch

    // a string that isn't in the category_stringid format

    $rank_title = $lang->get($row['rank_title']);

    // FIXME: make sure htmlspecialchars() is escaping quotes and backslashes

    echo '<a href="#rank_edit:' . $row['rank_id'] . '" onclick="ajaxInitRankEdit(' . $row['rank_id'] . '); return false;" class="rankadmin-editlink" style="' . htmlspecialchars($row['rank_style']) . '" id="rankadmin_editlink_' . $row['rank_id'] . '">' . htmlspecialchars($rank_title) . '</a> ';

  }

  echo '<a href="#rank_create" onclick="ajaxInitRankCreate(); return false;" class="rankadmin-editlink rankadmin-createlink" id="rankadmin_createlink">' . $lang->get('acpur_btn_create_init') . '</a> ';

  echo '</div>';

  echo '<div class="rankadmin-right" id="admin_ranks_container_right">';

  echo $lang->get('acpur_msg_select_rank');

  echo '</div>';

  echo '<span class="menuclear"></span>';

}

?>