<?php
/**
 * Display a form to edit the current page.
 *
 * @package        Handlers
 * @name        Edit
 *
 * @author        {@link http://wikkawiki.org/JsnX Jason Tourtelotte} (original code)
 * @author        {@link http://wikkawiki.org/Dartar Dario Taraborelli} (preliminary code cleanup, i18n)
 * @author        {@link http://wikkawiki.org/DotMG Mahefa Randimbisoa} (bugfixes)
 * @author        {@link http://wikkawiki.org/FishPete Peter Fischaleck} (Minor Edit Hack)
 * @since        Wikka 1.1.6.2
 *
 * @todo        - move main <div> to templating class;
 *             - optimization using history.back();
 *             - use central regex library for validation;
 */

// defaults
if(!defined('VALID_PAGENAME_PATTERN')) define ('VALID_PAGENAME_PATTERN', '/^[A-Za-zÄÖÜßäöü]+[A-Za-z0-9ÄÖÜßäöü]*$/s');
if(!defined('MAX_TAG_LENGTH')) define ('MAX_TAG_LENGTH', 75);
if(!defined('MAX_EDIT_NOTE_LENGTH')) define ('MAX_EDIT_NOTE_LENGTH', 50);

//i18n
if(!defined('PREVIEW_HEADER')) define('PREVIEW_HEADER', 'Preview');
if(!defined('LABEL_EDIT_NOTE')) define('LABEL_EDIT_NOTE', 'Please add a note on your edit');
if (!defined('INPUT_ERROR_STYLE')) define('INPUT_ERROR_STYLE', 'class="highlight"');
if(!defined('ERROR_INVALID_PAGENAME')) define('ERROR_INVALID_PAGENAME', 'This page name is invalid. Valid page names must start with a letter and contain only letters and numbers.');
if(!defined('ERROR_OVERWRITE_ALERT')) define('ERROR_OVERWRITE_ALERT', 'OVERWRITE ALERT: This page was modified by someone else while you were editing it.<br /> Please copy your changes and re-edit this page.');
if(!defined('ERROR_MISSING_EDIT_NOTE')) define('ERROR_MISSING_EDIT_NOTE', 'MISSING EDIT NOTE: Please fill in an edit note!');
if(!defined('ERROR_TAG_TOO_LONG')) define('ERROR_TAG_TOO_LONG', 'Tag too long! %d characters max.');
if(!defined('ERROR_NO_WRITE_ACCESS')) define('ERROR_NO_WRITE_ACCESS', 'You don\'t have write access to this page. You might need to register an account to be able to edit this page.');
if(!defined('MESSAGE_AUTO_RESIZE')) define('MESSAGE_AUTO_RESIZE', 'Clicking on %s will automatically truncate the tag to the correct size');
if(!defined('INPUT_SUBMIT_PREVIEW')) define('INPUT_SUBMIT_PREVIEW', 'Preview');
if(!defined('INPUT_SUBMIT_STORE')) define('INPUT_SUBMIT_STORE', 'Store');
if(!defined('INPUT_SUBMIT_REEDIT')) define('INPUT_SUBMIT_REEDIT', 'Re-edit');
if(!defined('INPUT_BUTTON_CANCEL')) define('INPUT_BUTTON_CANCEL', 'Cancel');
if(!defined('INPUT_SUBMIT_RENAME')) define('INPUT_SUBMIT_RENAME', 'Rename');
if(!defined('ACCESSKEY_STORE')) define('ACCESSKEY_STORE', 's');
if(!defined('ACCESSKEY_REEDIT')) define('ACCESSKEY_REEDIT', 'r');
if(!defined('ACCESSKEY_PREVIEW')) define('ACCESSKEY_PREVIEW', 'p');
if(!defined('SHOWCODE_LINK')) define('SHOWCODE_LINK', 'View formatting code for this page');
if(!defined('SHOWCODE_LINK_TITLE')) define('SHOWCODE_LINK_TITLE', 'Click to view page formatting code');

if(!defined('MINOR_CHANGE_FLAG_TEXT')) define('MINOR_CHANGE_FLAG_TEXT', 'Please check if your change is a minor one');//edit by FishPete


//initialization
$error = '';
$highlight_note = '';
$ondblclick = ''; //#123
if (isset($_POST['submit']) && ($_POST['submit'] == 'Preview') && ($user = $this->GetUser()) && ($user['doubleclickedit'] != 'N'))
{
    $ondblclick = ' ondblclick=\'document.getElementById("reedit_id").click();\'';
    //history.back() not working on IE. (changes are lost)
    //however, history.back() works fine in FF, and this is the optimized choice
    //TODO Optimization: Look $_SERVER['HTTP_USER_AGENT'] and use history.back() for good browsers like FF.
}
?>
<div class="page"<?php echo $ondblclick;?>>
<?php
if (!(preg_match(VALID_PAGENAME_PATTERN, $this->tag))) { //TODO use central regex library
    echo '<em>'.ERROR_INVALID_PAGENAME.'</em>';
}
elseif ($this->HasAccess("write") && $this->HasAccess("read"))
{
    $newtag = $output = '';
    if (isset($_POST['newtag'])) $newtag = $_POST['newtag'];
    if ($newtag !== '') $this->Redirect($this->Href('edit', $newtag));
    if ($_POST)
    {
        // strip CRLF line endings down to LF to achieve consistency ... plus it saves database space.
        // Note: these codes must remain enclosed in double-quotes to work!
        $body = str_replace("\r\n", "\n", $_POST['body']);

        $body = preg_replace("/\n[ ]{4}/", "\n\t", $body);    // @@@ FIXME: misses first line and multiple sets of four spaces

        // we don't need to escape here, we do that just before display (i.e., treat note just like body!)
        $note = trim($_POST['note']);

        // only if saving:
        if ($_POST['submit'] == 'Store')
        {
            // check for overwriting
            if ($this->page)
            {
                if ($this->page['id'] != $_POST['previous'])
                {
                    $error = ERROR_OVERWRITE_ALERT;
                }
            }
            // check for edit note
            if (($this->config['require_edit_note'] == 1) && $_POST['note'] == '')
            {
                $error .= ERROR_MISSING_EDIT_NOTE;
                $highlight_note= INPUT_ERROR_STYLE;
            }
            // store
            if (!$error)
            {
                // only save if new body differs from old body
                if ($body != $this->page['body']) {

                    // add page (revisions)
                   

//begin edit by FishPete                   
          //$this->SavePage($this->tag, $body, $note);
          if ($_POST['minor_change_flag']=='minor_change') //checkbox 'minor_change_flag' was cklicked by User
                     {
            $this->SavePage($this->tag, $body, $note, '1');// save page as a minor change
          }
          else //checkbox was not clicked
          {
            $this->SavePage($this->tag, $body, $note, '0');// save page as major change
          }                                                 
// end edit by FishPete         
                   
          // now we render it internally so we can write the updated link table.
                    $this->ClearLinkTable();
                    $this->StartLinkTracking();
                    $dummy = $this->Header();
                    $dummy .= $this->Format($body);
                    $dummy .= $this->Footer();
                    $this->StopLinkTracking();
                    $this->WriteLinkTable();
                    $this->ClearLinkTable();
                }

                // forward
                $this->Redirect($this->Href());
            }
        }
    }

    // fetch fields
    $previous = $this->page['id'];
    if (isset($_POST['previous'])) $previous = $_POST['previous'];
    if (!isset($body)) $body = $this->page['body'];
    $body = preg_replace("/\n[ ]{4}/", "\n\t", $body);    // @@@ FIXME: misses first line and multiple sets of four spaces - JW 2005-01-16


    if ($result = mysql_query("describe ".$this->config['table_prefix']."pages tag")) {
        $field = mysql_fetch_assoc($result);
        if (preg_match("/varchar\((\d+)\)/", $field['Type'], $matches)) $maxtaglen = $matches[1];
    }
    else
    {
        $maxtaglen = MAX_TAG_LENGTH;
    }

    if (isset($_POST['submit']) && $_POST['submit'] == INPUT_SUBMIT_PREVIEW) # preview output
    {
        $preview_buttons = '<hr />'."\n";
        // We need to escape ALL entity refs before display so we display them _as_ entities instead of interpreting them
        // so we use htmlspecialchars on the edit note (as on the body)
        if ($this->config['require_edit_note'] != 2) //check if edit_notes are enabled
        {
            $preview_buttons .= '<input size="'.MAX_EDIT_NOTE_LENGTH.'" type="text" name="note" value="'.htmlspecialchars($note).'" '.$highlight_note.'/>'.LABEL_EDIT_NOTE.'<br />'."\n";
        }
        $preview_buttons .= '<input type="checkbox" name="minor_change_flag" value="minor_change"> '.MINOR_CHANGE_FLAG_TEXT.'<br>'."\n";// Edit by FishPete, added 29.6.06
        $preview_buttons .= '<input name="submit" type="submit" value="'.INPUT_SUBMIT_STORE.'" accesskey="'.ACCESSKEY_STORE.'" />'."\n".
            '<input name="submit" type="submit" value="'.INPUT_SUBMIT_REEDIT.'" accesskey="'.ACCESSKEY_REEDIT.'" id="reedit_id" />'."\n".
            '<input type="button" value="'.INPUT_BUTTON_CANCEL.'" onclick="document.location=\''.$this->href('').'\';" />'."\n";

        $output .= '<div class="previewhead">'.PREVIEW_HEADER.'</div>'."\n";

        $output .= $this->Format($body);

        $output .=
            $this->FormOpen('edit')."\n".
            '<input type="hidden" name="previous" value="'.$previous.'" />'."\n".
            // We need to escape ALL entity refs before display so we display them _as_ entities instead of interpreting them
            // hence htmlspecialchars() instead of htmlspecialchars_ent() which UNescapes entities!
            '<input type="hidden" name="body" value="'.htmlspecialchars($body).'" />'."\n";


        $output .= "<br />\n".$preview_buttons.$this->FormClose()."\n";
    }
    elseif (!$this->page && strlen($this->tag) > $maxtaglen) # rename page
    {
        $this->tag = substr($this->tag, 0, $maxtaglen); // truncate tag to feed a backlinks-handler with the correct value. may be omited. it only works if the link to a backlinks-handler is built in the footer.
        $output  = '<em class="error">'.sprintf(ERROR_TAG_TOO_LONG, $maxtaglen).'</em><br />'."\n";
        $output .= sprintf(MESSAGE_AUTO_RESIZE, INPUT_SUBMIT_RENAME).'<br /><br />'."\n";
        $output .= $this->FormOpen('edit');
        $output .= '<input name="newtag" size="'.MAX_TAG_LENGTH.'" value="'.$this->htmlspecialchars_ent($this->tag).'" />';
        $output .= '<input name="submit" type="submit" value="'.INPUT_SUBMIT_RENAME.'" />'."\n";
        $output .= $this->FormClose();
    }
    else    # edit page
    {
        // display form
        if ($error)
        {
            $output .= '<em class="error">'.$error.'</em>'."\n";
        }

        // append a comment?
        if (isset($_REQUEST['appendcomment']))
        {
            $body = trim($body)."\n\n----\n\n--".$this->GetUserName().' ('.strftime("%c").')';
        }

        $output .=
            $this->FormOpen('edit').
            '<input type="hidden" name="previous" value="'.$previous.'" />'."\n".
            // We need to escape ALL entity refs before display so we display them _as_ entities instead of interpreting them
            // hence htmlspecialchars() instead of htmlspecialchars_ent() which UNescapes entities!
            '<textarea id="body" name="body">'.htmlspecialchars($body).'</textarea><br />'."\n";
            //note add Edit
            // We need to escape ALL entity refs before display so we display them _as_ entities instead of interpreting them
            // so we use htmlspecialchars on the edit note (as on the body)
        if ($this->config['require_edit_note'] != 2) //check if edit_notes are enabled
        {
            $output .= '<input size="'.MAX_EDIT_NOTE_LENGTH.'" type="text" name="note" value="'.htmlspecialchars($note).'" '.$highlight_note.'/> '.LABEL_EDIT_NOTE.'<br />'."\n";
        }
   
 
          $output .= '<input type="checkbox" name="minor_change_flag" value="minor_change"> '.MINOR_CHANGE_FLAG_TEXT.'<br>'."\n";// Edit by FishPete
                 
 
    //finish
        $output .=    '<input name="submit" type="submit" value="'.INPUT_SUBMIT_STORE.'" accesskey="'.ACCESSKEY_STORE.'" /> <input name="submit" type="submit" value="'.INPUT_SUBMIT_PREVIEW.'" accesskey="'.ACCESSKEY_PREVIEW.'" /> <input type="button" value="'.INPUT_BUTTON_CANCEL.'" onclick="document.location=\''.$this->Href('').'\';" />'."\n".
            $this->FormClose();

        if ($this->config['gui_editor'] == 1)
        {
            $output .= '<script type="text/javascript" src="3rdparty/plugins/wikiedit/protoedit.js"></script>'."\n".
                    '<script type="text/javascript" src="3rdparty/plugins/wikiedit/wikiedit2.js"></script>'."\n";
            $output .= '<script type="text/javascript">'."  wE = new WikiEdit(); wE.init('body','WikiEdit','editornamecss');".'</script>'."\n";
        }
    }

    echo $output;
}
else
{
    $message =    '<em>'.ERROR_NO_WRITE_ACCESS.'</em><br />'."\n".
            "<br />\n".
            '<a href="'.$this->Href('showcode').'" title="'.SHOWCODE_LINK_TITLE.'">'.SHOWCODE_LINK.'</a>'.
            "<br />\n";
    echo $message;
}
?>
</div>