<?php
// File name:	preview.inc.php
// Description:	PHP subroutine to handle page previews
// Date:	2004-10-28
// Author:	imacat <imacat@pristine.com.tw>
// Copyright:	Copyright (C) 2004-2007 Pristine Communications

// Set the include path
if (!defined("INCPATH_SET")) {
    require_once dirname(__FILE__) . "/incpath.inc.php";
}
// Referenced subroutines
require_once "monica/callform.inc.php";
require_once "monica/getlang.inc.php";
require_once "monica/gettext.inc.php";
require_once "monica/htmlchar.inc.php";
require_once "monica/lninfo.inc.php";
require_once "monica/page2rel.inc.php";
require_once "monica/pagefunc.inc.php";
require_once "monica/requri.inc.php";
require_once "monica/sql.inc.php";

// fetch_preview: Retrieve a previously suspended preview from,
//   from $_SESSION or database
function fetch_preview()
{
    // S/N not specified
    if (!array_key_exists("sn", $_GET)) {
        return array("msg"=>NC_("The following field was not received: \"%s\"."),
            "margs"=>array("sn"),
            "isform"=>false);
    }
    // Check the source to retrieve the preview form
    $source = "session";
    if (array_key_exists("source", $_GET)) {
        switch ($_GET["source"]) {
        // Retrieve from the database
        case "db":
            $source = "db";
            break;
        // Retrieve from the $_SESSION saveform
        case "session":
            $source = "session";
            break;
        // Other preview sources
        default:
            return array("msg"=>NC_("Unknown preview source: \"%s\"."),
                "margs"=>array($_GET["source"]),
                "isform"=>false);
            break;
        }
    }
    
    // Retrieve the preview form
    switch ($source) {
    // Retrieve from the database
    case "db":
        // Fetch with fetch_curitem()
        fetch_curitem();
        $GLOBALS["PREVIEW"] =& $GLOBALS["CURRENT"];
        break;
    // Retrieve from the $_SESSION saveform
    case "session":
        $GLOBALS["PREVIEW"] =& retrieve_form($_GET["sn"]);
        if (count($GLOBALS["PREVIEW"]) == 0) {
            unset($GLOBALS["PREVIEW"]);
            return array("msg"=>NC_("Unknown preview form: %d."),
                "margs"=>array($_GET["sn"]),
                "isform"=>false);
        }
        break;
    }
    // Tag that this is a preview content
    $GLOBALS["PREVIEW"]["preview"] = true;
    // OK
    return null;
}

// html_preview: Display the preview
function html_preview()
{
    // Lock the required tables
    if (array_key_exists("REBUILD_TABLES", $GLOBALS)) {
        $sql_lock = array();
        foreach ($GLOBALS["REBUILD_TABLES"] as $table) {
            $sql_lock[$table] = LOCK_SH;
        }
    }
    sql_lock($sql_lock);
    global $PREVIEW;
    $html = compose_page($PREVIEW);
    $path = $PREVIEW["path"];
    // A multi-lingual website
    if (count($GLOBALS["ALL_LINGUAS"]) > 1 && !preg_match("/\.php\?/", $path)) {
        $path = "/" . getlang(LN_FILENAME) . $path;
    }
    $html = page2rel(page2abs($html, $path), REQUEST_PATH);
    echo $html;
    return;
}

// html_preview_mark: Print the HTML preview mark
function html_preview_mark($args = null)
{
    // Obtain page parameters
    $args = page_param($args);
    // This is only for the preview
    if (is_null($args["preview"])) {
        return;
    }
    
    // Decide the data source
    $source = "session";
    if (array_key_exists("source", $_GET)) {
        switch ($_GET["source"]) {
        // Retrieve from the database
        case "db":
            $source = "db";
            break;
        // Retrieve from the $_SESSION saveform
        case "session":
            $source = "session";
            break;
        // Other preview sources
        default:
            trigger_error("Unknown preview source: \"" . $_GET["source"] . "\"",
                E_USER_ERROR);
            break;
        }
    }
    
    // Set the query arguments
    switch ($source) {
    // Retrieve from the database
    case "db":
        $url = REQUEST_PATH . "?form=cur&sn=" . $_GET["sn"];
        break;
    // Retrieve from the $_SESSION saveform
    case "session":
        $url = REQUEST_PATH . "?formid=" . $_GET["sn"];
        break;
    }
    $areatitle = C_("Preview Mark Area");
    
?><div class="previewmark" title="<?php echo h($areatitle); ?>">
<h2><?php echo h(C_("Preview")); ?></h2>
<p><a href="<?php echo h($url); ?>"><?php
    echo h(C_("Finish preview and return.")); ?></a></p>
</div>

<?php
    return;
}

?>