<?php

/*

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

 * Copyright (C) 2006-2007 Dan Fuhry

 *

 * 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_PageGroups()

{

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

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

  {

    echo '<h3>Error: Not authenticated</h3><p>It looks like your administration session is invalid or you are not authorized to access this administration page. Please <a href="' . makeUrlNS('Special', 'Login/' . $paths->nslist['Special'] . 'Administration', 'level=' . USER_LEVEL_ADMIN, true) . '">re-authenticate</a> to continue.</p>';

    return;

  }

  if ( isset($_POST['action']) )

  {

    if ( isset($_POST['action']['create']) || isset($_POST['action']['create_stage2']) )

    {

      switch ( isset($_POST['action']['create_stage2']) )

      {

        case true:

          if ( empty($_POST['pg_name']) || empty($_POST['group_type']) )

          {

            echo '<div class="error-box">Please enter a name for the page group.</div>';

            return;

          }

          if ( $_POST['group_type'] == PAGE_GRP_TAGGED && empty($_POST['member_tag']) )

          {

            echo '<div class="error-box">Please enter a page tag.</div>';

            return;

          }

          if ( $_POST['group_type'] == PAGE_GRP_CATLINK && empty($_POST['member_cat']) )

          {

            echo '<div class="error-box">Please create a category page before linking a page group to a category.</div>';

            return;

          }

          if ( $_POST['group_type'] == PAGE_GRP_NORMAL && empty($_POST['member_page_0']) )

          {

            echo '<div class="error-box">Please specify at least one page to place in this group.</div>';

            return;

          }

          if ( $_POST['group_type'] == PAGE_GRP_REGEX && empty($_POST['regex']) )

          {

            echo '<div class="error-box">Please specify a regular expression to match page IDs against.</div>';

            return;

          }

          if ( $_POST['group_type'] != PAGE_GRP_TAGGED && $_POST['group_type'] != PAGE_GRP_CATLINK && $_POST['group_type'] != PAGE_GRP_NORMAL && $_POST['group_type'] != PAGE_GRP_REGEX )

          {

            echo '<div class="error-box">Umm, you sent an invalid group type. I\'d put a real error message here but this will only be shown if you try to hack the system.</div>';

            return;

          }

          // All checks passed, create the group

          switch($_POST['group_type'])

          {

            case PAGE_GRP_TAGGED:

              $name = $db->escape($_POST['pg_name']);

              $tag  = $db->escape($_POST['member_tag']);

              $sql = 'INSERT INTO '.table_prefix.'page_groups(pg_type,pg_name,pg_target) VALUES(' . PAGE_GRP_TAGGED . ', \'' . $name . '\', \'' . $tag . '\');';

              $q = $db->sql_query($sql);

              if ( !$q )

                $db->_die();

              break;

            case PAGE_GRP_CATLINK:

              $name = $db->escape($_POST['pg_name']);

              $cat  = $db->escape($_POST['member_cat']);

              $sql = 'INSERT INTO '.table_prefix.'page_groups(pg_type,pg_name,pg_target) VALUES(' . PAGE_GRP_CATLINK . ', \'' . $name . '\', \'' . $cat . '\');';

              $q = $db->sql_query($sql);

              if ( !$q )

                $db->_die();

              break;

            case PAGE_GRP_NORMAL:

              $name = $db->escape($_POST['pg_name']);

              $sql = 'INSERT INTO '.table_prefix.'page_groups(pg_type,pg_name) VALUES(' . PAGE_GRP_NORMAL . ', \'' . $name . '\');';

              $q = $db->sql_query($sql);

              if ( !$q )

                $db->_die();

              $ins_id = $db->insert_id();

              // Page list

              $keys = array_keys($_POST);

              $arr_pages = array();

              foreach ( $keys as $val )

              {

                if ( preg_match('/^member_page_([0-9]+?)$/', $val) && !empty($_POST[$val]) && isPage($_POST[$val]) )

                {

                  $arr_pages[] = $_POST[$val];

                }

              }

              $arr_sql = array();

              foreach ( $arr_pages as $page )

              {

                list($id, $ns) = RenderMan::strToPageID($page);

                $id = sanitize_page_id($id);

                $arr_sql[] = '(' . $ins_id . ',\'' . $db->escape($id) . '\', \'' . $ns . '\')';

              }

              $sql = 'INSERT INTO '.table_prefix.'page_group_members(pg_id,page_id,namespace) VALUES' . implode(',', $arr_sql) . ';';

              $q = $db->sql_query($sql);

              if ( !$q )

                $db->_die();

              break;

            case PAGE_GRP_REGEX:

              $name  = $db->escape($_POST['pg_name']);

              $regex = $db->escape($_POST['regex']);

              $sql = 'INSERT INTO '.table_prefix.'page_groups(pg_type,pg_name,pg_target) VALUES(' . PAGE_GRP_REGEX . ', \'' . $name . '\', \'' . $regex . '\');';

              $q = $db->sql_query($sql);

              if ( !$q )

                $db->_die();

              break;

          }

          echo '<div class="info-box">The page group "' . htmlspecialchars($_POST['pg_name']) . '" has been created.</div>';

          break;

      }

      // A little Javascript magic

      ?>

      <script language="javascript" type="text/javascript">

        function pg_create_typeset(selector)

        {

          var pg_normal  = <?php echo PAGE_GRP_NORMAL; ?>;

          var pg_tagged  = <?php echo PAGE_GRP_TAGGED; ?>;

          var pg_catlink = <?php echo PAGE_GRP_CATLINK; ?>;

          var pg_regex   = <?php echo PAGE_GRP_REGEX; ?>;

          var selection = false;

          // Get selection

          for ( var i = 0; i < selector.childNodes.length; i++ )

          {

            var child = selector.childNodes[i];

            if ( !child || child.tagName != 'OPTION' )

            {

              continue;

            }

            if ( child.selected )

            {

              selection = child.value;

            }

          }

          if ( !selection )

          {

            alert('Cannot get field value');

            return true;

          }

          selection = parseInt(selection);

          if ( selection != pg_normal && selection != pg_tagged && selection != pg_catlink && selection != pg_regex )

          {

            alert('Invalid field value');

            return true;

          }

          // We have the selection and it's validated; show the appropriate field group

          if ( selection == pg_normal )

          {

            document.getElementById('pg_create_title_catlink').style.display = 'none';

            document.getElementById('pg_create_catlink_1').style.display = 'none';

            document.getElementById('pg_create_catlink_2').style.display = 'none';

            document.getElementById('pg_create_title_tagged').style.display = 'none';

            document.getElementById('pg_create_tagged_1').style.display = 'none';

            document.getElementById('pg_create_tagged_2').style.display = 'none';

            document.getElementById('pg_create_title_normal').style.display = 'inline';

            document.getElementById('pg_create_normal_1').style.display = 'block';

            document.getElementById('pg_create_normal_2').style.display = 'block';

            document.getElementById('pg_create_title_regex').style.display = 'none';

            document.getElementById('pg_create_regex_1').style.display = 'none';

            document.getElementById('pg_create_regex_2').style.display = 'none';

          }

          else if ( selection == pg_catlink )

          {

            document.getElementById('pg_create_title_catlink').style.display = 'inline';

            document.getElementById('pg_create_catlink_1').style.display = 'block';

            document.getElementById('pg_create_catlink_2').style.display = 'block';

            document.getElementById('pg_create_title_tagged').style.display = 'none';

            document.getElementById('pg_create_tagged_1').style.display = 'none';

            document.getElementById('pg_create_tagged_2').style.display = 'none';

            document.getElementById('pg_create_title_normal').style.display = 'none';

            document.getElementById('pg_create_normal_1').style.display = 'none';

            document.getElementById('pg_create_normal_2').style.display = 'none';

            document.getElementById('pg_create_title_regex').style.display = 'none';

            document.getElementById('pg_create_regex_1').style.display = 'none';

            document.getElementById('pg_create_regex_2').style.display = 'none';

          }

          else if ( selection == pg_tagged )

          {

            document.getElementById('pg_create_title_catlink').style.display = 'none';

            document.getElementById('pg_create_catlink_1').style.display = 'none';

            document.getElementById('pg_create_catlink_2').style.display = 'none';

            document.getElementById('pg_create_title_tagged').style.display = 'inline';

            document.getElementById('pg_create_tagged_1').style.display = 'block';

            document.getElementById('pg_create_tagged_2').style.display = 'block';

            document.getElementById('pg_create_title_normal').style.display = 'none';

            document.getElementById('pg_create_normal_1').style.display = 'none';

            document.getElementById('pg_create_normal_2').style.display = 'none';

            document.getElementById('pg_create_title_regex').style.display = 'none';

            document.getElementById('pg_create_regex_1').style.display = 'none';

            document.getElementById('pg_create_regex_2').style.display = 'none';

          }

          else if ( selection == pg_regex )

          {

            document.getElementById('pg_create_title_catlink').style.display = 'none';

            document.getElementById('pg_create_catlink_1').style.display = 'none';

            document.getElementById('pg_create_catlink_2').style.display = 'none';

            document.getElementById('pg_create_title_tagged').style.display = 'none';

            document.getElementById('pg_create_tagged_1').style.display = 'none';

            document.getElementById('pg_create_tagged_2').style.display = 'none';

            document.getElementById('pg_create_title_normal').style.display = 'none';

            document.getElementById('pg_create_normal_1').style.display = 'none';

            document.getElementById('pg_create_normal_2').style.display = 'none';

            document.getElementById('pg_create_title_regex').style.display = 'inline';

            document.getElementById('pg_create_regex_1').style.display = 'block';

            document.getElementById('pg_create_regex_2').style.display = 'block';

          }

        }

        // Set to pg_normal on page load

        var pg_createform_init = function()

        {

          document.getElementById('pg_create_title_catlink').style.display = 'none';

          document.getElementById('pg_create_catlink_1').style.display = 'none';

          document.getElementById('pg_create_catlink_2').style.display = 'none';

          document.getElementById('pg_create_title_tagged').style.display = 'none';

          document.getElementById('pg_create_tagged_1').style.display = 'none';

          document.getElementById('pg_create_tagged_2').style.display = 'none';

          document.getElementById('pg_create_title_regex').style.display = 'none';

          document.getElementById('pg_create_regex_1').style.display = 'none';

          document.getElementById('pg_create_regex_2').style.display = 'none';

          document.getElementById('pg_create_title_normal').style.display = 'inline';

          document.getElementById('pg_create_normal_1').style.display = 'block';

          document.getElementById('pg_create_normal_2').style.display = 'block';

        }

        addOnloadHook(pg_createform_init);

        function pg_create_more_fields()

        {

          var targettd = document.getElementById('pg_create_normal_2');

          var id = 0;

          for ( var i = 0; i < targettd.childNodes.length; i++ )

          {

            var child = targettd.childNodes[i];

            if ( child.tagName == 'INPUT' )

            {

              if ( child.type == 'button' )

              {

                var newInp = document.createElement('input');

                // <input type="text" name="member_page_1" id="pg_create_member_1" onkeyup="return ajaxPageNameComplete(this);" size="30" /><br />

                newInp.type    = 'text';

                newInp.name    = 'member_page_' + id;

                newInp.id      = 'pg_create_member_' + id;

                newInp.onkeyup = function(e) { return ajaxPageNameComplete(this); };

                newInp.size    = '30';

                newInp.style.marginTop = '3px';

                targettd.insertBefore(newInp, child);

                targettd.insertBefore(document.createElement('br'), child);

                break;

              }

              else // if ( child.type == 'text' )

              {

                id++;

              }

            }

          }

        }

      </script>

      <?php

      // Build category list

      $q = $db->sql_query('SELECT name,urlname FROM '.table_prefix.'pages WHERE namespace=\'Category\';');

      if ( !$q )

        $db->_die();

      if ( $db->numrows() < 1 )

      {

        $catlist = 'There aren\'t any categories on this site.';

      }

      else

      {

        $catlist = '<select name="member_cat">';

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

        {

          $catlist .= '<option value="' . htmlspecialchars($row['urlname']) . '">' . htmlspecialchars($row['name']) . '</option>';

        }

        $catlist .= '</select>';

      }

      echo '<script type="text/javascript">

              var __pg_edit_submitAuthorized = true;

            </script>';

      echo '<form action="'.makeUrl($paths->nslist['Special'].'Administration', 'module='.$paths->cpage['module']).'" method="post" onsubmit="if(!submitAuthorized || !__pg_edit_submitAuthorized) return false;" enctype="multipart/form-data">';

      echo '<div class="tblholder">

            <table border="0" cellspacing="1" cellpadding="4">

              <tr>

              <th colspan="2">Create page group</th>

              </tr>';

      // Name

      echo '<tr>

              <td class="row2">

              Group name:<br />

              <small>This should be short, descriptive, and human-readable.</small>

              </td>

              <td class="row1">

              <input type="text" name="pg_name" size="30" />

              </td>

            </tr>';

      // Group type

      echo '<tr>

              <td class="row2">

              Group type:

              </td>

              <td class="row1">

              <select name="group_type" onchange="pg_create_typeset(this);">

                <option value="' . PAGE_GRP_NORMAL  . '" selected="selected">Static group of pages</option>

                <option value="' . PAGE_GRP_TAGGED  . '">Group of pages with one tag</option>

                <option value="' . PAGE_GRP_CATLINK . '">Link to category</option>

                <option value="' . PAGE_GRP_REGEX   . '">Perl-compatible regular expression (advanced)</option>

              </select>

              </td>

            </tr>';

      // Titles

      echo '<tr>

              <th colspan="2">

                <span id="pg_create_title_normal">

                  Static group of pages

                </span>

                <span id="pg_create_title_tagged">

                  Group of commonly tagged pages

                </span>

                <span id="pg_create_title_catlink">

                  Mirror a category

                </span>

                <span id="pg_create_title_regex">

                  Filter through a regular expression

                </span>

              </th>

            </tr>';

      echo '<tr>

              <td class="row2">

                <div id="pg_create_normal_1">

                  Member pages:<br />

                  <small>Click the "plus" button to add more fields.</small>

                </div>

                <div id="pg_create_catlink_1">

                  Include pages in this category:<br />

                  <small>Pages in subcategories are <u>not</u> included, however subcategory pages themselves are.</small>

                </div>

                <div id="pg_create_tagged_1">

                  Include pages with this tag:

                </div>

                <div id="pg_create_regex_1">

                  Regular expression:<br />

                  <small>Be sure to include the starting and ending delimiters and any flags you might need.<br />

                         These pages might help: <a href="http://us.php.net/manual/en/reference.pcre.pattern.modifiers.php">Pattern modifiers</a> &bull;

                         <a href="http://us.php.net/manual/en/reference.pcre.pattern.syntax.php">Pattern syntax</a><br />

                         Examples: <tt>/^(Special|Admin):/i</tt> &bull; <tt>/^Image:([0-9]+)$/</tt><br />

                         Developers, remember that this will be matched against the full page identifier string. This means that <tt>/^About_Enano$/</tt>

                         will NOT match the page Special:About_Enano.</small>

              </td>';

      echo '  <td class="row1">

                <div id="pg_create_normal_2" />

                  <input type="text" style="margin-top: 3px;" name="member_page_0" id="pg_create_member_0" onkeyup="return ajaxPageNameComplete(this);" size="30" /><br />

                  <input type="text" style="margin-top: 3px;" name="member_page_1" id="pg_create_member_1" onkeyup="return ajaxPageNameComplete(this);" size="30" /><br />

                  <input type="text" style="margin-top: 3px;" name="member_page_2" id="pg_create_member_2" onkeyup="return ajaxPageNameComplete(this);" size="30" /><br />

                  <input type="text" style="margin-top: 3px;" name="member_page_3" id="pg_create_member_3" onkeyup="return ajaxPageNameComplete(this);" size="30" /><br />

                  <input type="text" style="margin-top: 3px;" name="member_page_4" id="pg_create_member_4" onkeyup="return ajaxPageNameComplete(this);" size="30" /><br />

                  <input type="button" onclick="pg_create_more_fields(); return false;" style="margin-top: 5px;" value="&nbsp;&nbsp;+&nbsp;&nbsp;" />

                </div>

                <div id="pg_create_tagged_2">

                  <input type="text" name="member_tag" size="30" />

                </div>

                <div id="pg_create_catlink_2">

                  ' . $catlist . '

                </div>

                <div id="pg_create_regex_2">

                  <input type="text" name="regex" size="60" /> 

                </div>

              </td>

            </tr>';

      // Submit button

      echo '<tr>

              <th class="subhead" colspan="2"><input type="submit" name="action[create_stage2]" value="Create page group" style="font-weight: bold;" /> <input type="submit" name="action[noop]" value="Cancel" style="font-weight: normal;" /></th>

            </tr>';

      echo '</table>

            </div>';

      echo '</form>';

      return;

    }

    else if ( isset($_POST['action']['del']) )

    {

      // Confirmation to delete a group (this is really only a stub)

      $delete_id = array_keys($_POST['action']['del']);

      $delete_id = intval($delete_id[0]);

      if ( !empty($delete_id) )

      {

        echo '<form action="'.makeUrl($paths->nslist['Special'].'Administration', 'module='.$paths->cpage['module']).'" method="post" onsubmit="if(!submitAuthorized) return false;" enctype="multipart/form-data">';

        echo '<input type="hidden" name="delete_id" value="' . $delete_id . '" />';

        echo '<div class="tblholder">';

        echo '  <table border="0" cellspacing="1" cellpadding="4">';

        echo '    <tr><th>Confirm deletion</th></tr>';

        echo '    <tr><td class="row2" style="text-align: center; padding: 20px 0;">Are you sure you want to delete this page group?</td></tr>';

        echo '    <tr><td class="row1" style="text-align: center;">';

        echo '        <input type="submit" name="action[del_confirm]" value="Yes, delete group" style="font-weight: bold;" />';

        echo '        <input type="submit" name="action[noop]" value="Cancel" style="font-weight: normal;" />';

        echo '        </td></tr>';

        echo '  </table>';

        echo '</form>';

        return;

      }

    }

    else if ( isset($_POST['action']['del_confirm']) )

    {

      $delete_id = intval($_POST['delete_id']);

      if ( empty($delete_id) )

      {

        echo 'Hack attempt';

        return;

      }

      // Obtain group name

      $q = $db->sql_query('SELECT pg_name FROM '.table_prefix.'page_groups WHERE pg_id=' . $delete_id . ';');

      if ( !$q )

        $db->_die();

      if ( $db->numrows() < 1 )

      {

        echo 'Page group dun exist.';

        return;

      }

      $row = $db->fetchrow();

      $db->free_result();

      $pg_name = $row['pg_name'];

      unset($row);

      // Delete the group

      $q = $db->sql_query('DELETE FROM '.table_prefix.'page_groups WHERE pg_id=' . $delete_id . ';');

      if ( !$q )

        $db->_die();

      $q = $db->sql_query('DELETE FROM '.table_prefix.'page_group_members WHERE pg_id=' . $delete_id . ';');

      if ( !$q )

        $db->_die();

      echo "<div class='info-box'>The group ".'"'.htmlspecialchars("$pg_name").'"'." has been deleted.</div>";

    }

    else if ( isset($_POST['action']['edit']) && !isset($_POST['action']['noop']) )

    {

      if ( isset($_POST['action']['edit_save']) )

      {

      }

      if ( isset($_POST['action']['edit']['add_page']) && isset($_GET['src']) && $_GET['src'] == 'ajax' )

      {

        $json = new Services_JSON(SERVICES_JSON_LOOSE_TYPE);

        $return = array('successful' => false);

        //

        // Add the specified page to the group

        //

        // Get ID of the group

        $edit_id = intval($_POST['pg_id']);

        if ( !$edit_id )

        {

          $return = array('mode' => 'error', 'text' => 'Hack attempt');

          echo $json->encode($return);

          return;

        }

        // Run some validation - check that page exists and that it's not already in the group

        $page = $_POST['new_page'];

        if ( empty($page) )

        {

          $return = array('mode' => 'error', 'text' => 'Please enter a page title.');

          echo $json->encode($return);

          return;

        }

        /*

        // We're gonna allow adding nonexistent pages for now

        if ( !isPage($page) )

        {

          $return = array('mode' => 'error', 'text' => 'The page you are trying to add (' . htmlspecialchars($page) . ') does not exist.');

          echo $json->encode($return);

          return;

        }

        */

        list($page_id, $namespace) = RenderMan::strToPageID($page);

        $page_id = sanitize_page_id($page_id);