<?php
// File name:	news.inc.php
// Description:	PHP subroutines to handle news
// Date:	2006-03-17
// Author:	imacat <imacat@pristine.com.tw>
// Copyright:	Copyright (C) 2006-2007 Pristine Communications

// Set the include path
if (!defined("INCPATH_SET")) {
    require_once dirname(__FILE__) . "/incpath.inc.php";
}
// Referenced subroutines
require_once "monica/chkfunc.inc.php";
require_once "monica/commtext.inc.php";
require_once "monica/getlang.inc.php";
require_once "monica/lninfo.inc.php";
require_once "monica/sql.inc.php";

// news_title: Obtain the news article title
function news_title($sn)
{
    // Cache the result
    static $cache = array();
    // Bounce if there is any problem with $sn
    if (is_null($sn)) {
        return t_notset();
    }
    // Return the cache
    if (array_key_exists($sn, $cache)) {
        return $cache[$sn];
    }
    
    // Check the serial number first
    if (!check_sn($sn)) {
        $cache[$sn] = t_na();
        return $cache[$sn];
    }
    
    // Query
    $lndb = getlang(LN_DATABASE);
    // Default language
    if (getlang() == DEFAULT_LANG) {
        $title = sql_strcat("to_char(date, 'YYYY-MM-DD')", "' '",
            "title_$lndb") . " AS title";
    // Fall back to the default language
    } else {
        $lndbdef = ln(DEFAULT_LANG, LN_DATABASE);
        $title = sql_strcat("to_char(date, 'YYYY-MM-DD')", "' '",
            "COALESCE(title_$lndb, title_$lndbdef)") . " AS title";
    }
    $select = "SELECT $title FROM news"
        . " WHERE sn=$sn;\n";
    $result = sql_query($select);
    
    // Not found
    if (sql_num_rows($result) != 1) {
        $cache[$sn] = t_na();
        return $cache[$sn];
    }
    
    // Found
    $row = sql_fetch_assoc($result);
    $cache[$sn] = $row["title"];
    
    return $cache[$sn];
}

// news_id: Obtain the news article ID.
function news_id($sn)
{
    // Cache the result
    static $cache = array();
    // Bounce if there is any problem with $sn
    if (is_null($sn)) {
        return t_notset();
    }
    // Return the cache
    if (array_key_exists($sn, $cache)) {
        return $cache[$sn];
    }
    
    // Check the serial number first
    if (!check_sn($sn)) {
        $cache[$sn] = t_na();
        return $cache[$sn];
    }
    
    // Query
    $select = "SELECT date, ord FROM news"
        . " WHERE sn=$sn;\n";
    $result = sql_query($select);
    
    // Not found
    if (sql_num_rows($result) != 1) {
        $cache[$sn] = t_na();
        return $cache[$sn];
    }
    
    // Found
    $row = sql_fetch_assoc($result);
    $cache[$sn] = newsid_compose($row["date"], $row["ord"]);
    
    return $cache[$sn];
}

// newsid_compose: Compose the news article ID
function newsid_compose($date, $ord)
{
    return date("Ymd", strtotime($date)) . sprintf("%02d", $ord);
}

?>