<?php

/**
 * Display a list of recent changes made by a user.
 *
 * This action can be used to display a list of pages modified by a specific user. It
 * accepts a user value both as an action parameter and as a GET parameter. The
 * specified user must be an existing user. If no user parameter is specified
 * or the specified user is invalid, an error message is printed. If no user parameter
 * is specified or the specified user is invalid, and the current user is logged in,
 * the action will display a list of pages recently changed by the current user.
 *
 * @package     Actions
 * @name        Userchanges
 *
 * @author      {@link http://www.wakkawiki.com/CarloZottmann Carlo Zottmann} (original code)
 * @author      {@link http://wikka.jsnx.com/DarTar Dario Taraborelli} (modified action)
 * @version     0.4
 * @since       Wikka 1.1.X.X
 * @output      list of pages recently modified by the specified user
 * @input       string  $user  optional: a valid user name;
 *              default: current user, if user is logged in;
 *              the default can be overridden by providing a URL parameter 'user';
 * @todo
 *              - (Optionally) create a config option allowing admins to decide whether users can
 *              display pages modified by other users;
 */

$author =''; #initializing variable

switch(true) {
    case (isset($_GET['user']) && $this->LoadUser($_GET['user'])): # a valid user is specified as an URL parameter
    $author = $_GET['user'];
    break;

    case (isset($user) && $this->LoadUser($user)): # a valid user parameter is used
    $author = $user;
    break;

    case ($this->GetUser()):
    $author = $this->GetUserName();
    break;
}

$page = $this->GetPageTag();

if ($author)
{
    $user_edits_count = 0;

    if ($_GET["alpha"] == 1)
    {
        echo $this->Format("== Pages modified by [[".$author."]] == --- --- ");
        print("This is a list of pages edited by ".$this->Link($author).", along with the time of the last edit (<a
href=\"".$this->Href("", "", "user=".$author."&date=1&action=changes")."\">order by date</a>).<br /><br />\n");

        if ($pages = $this->LoadAll("SELECT tag, time FROM ".$this->config["table_prefix"]."pages WHERE user =
'".mysql_real_escape_string($author)."' ORDER BY tag ASC, time DESC"))
        {
            foreach ($pages as $page)
            {
                if ($last_tag != $page["tag"]) {
                    $last_tag = $page["tag"];
                    $firstChar = strtoupper($page["tag"][0]);
                    if (!preg_match("/[A-Z,a-z]/", $firstChar)) {
                        $firstChar = "#";
                    }
       
                    if ($firstChar != $curChar) {
                        if ($curChar) print("<br />\n");
                        print("<strong>$firstChar</strong><br />\n");
                        $curChar = $firstChar;
                    }
   
                    // print entry
                    print("   (".$page["time"].") (".$this->Link($page["tag"], "revisions", "history", 0).") ".$this->Link($page["tag"], "", "", 0)."<br />\n");
   
                    $user_edits_count++;
                }
            }
           
            if ($user_edits_count == 0)
            {
                print("<em>User has not edited any pages yet.</em>");
            }
        }
        else
        {
            print("<em>No pages found.</em>");
        }
    }
    else
    {

                echo $this->Format("== Pages modified by [[".$author."]] == --- --- ");
                print("This is a list of pages edited by ".$this->Link($author).", ordered by the time of last edit (<a
href=\"".$this->Href("", "", "user=".$author."&alpha=1&action=changes")."\">order alphabetically</a>).<br /><br />\n");

        if ($pages = $this->LoadAll("SELECT tag, time FROM ".$this->config["table_prefix"]."pages WHERE user =
'".mysql_real_escape_string($author)."' ORDER BY time ASC, tag ASC"))
        {
            foreach ($pages as $page)
            {
                $edited_pages[$page["tag"]] = $page["time"];
            }

            $edited_pages = array_reverse($edited_pages);

            foreach ($edited_pages as $page["tag"] => $page["time"])
            {
                // day header
                list($day, $time) = explode(" ", $page["time"]);
                if ($day != $curday)
                {
                    if ($curday) print("<br />\n");
                    print("<strong>$day:</strong><br />\n");
                    $curday = $day;
                }

                // print entry
                print("   ($time) (".$this->Link($page["tag"], "revisions", "history", 0).") ".$this->Link($page["tag"], "", "", 0)."<br />\n");

                $user_edits_count++;
            }
           
            if ($user_edits_count == 0)
            {
                print("<em>User has not edited any pages yet.</em>");
            }
        }
        else
        {
            print("<em>No pages found.</em>");
        }
    }
}
else
{
    print("<em>No user specified</em>");
}

?>