<?php
/*
 * index.php
 * This file is part of lamos
 * 
 * Copyright 2008-2009 Michel Messerschmidt
 * 
 * This program is free software: you can redistribute it and/or modify 
 * it under the terms of the GNU General Public License as published by 
 * the Free Software Foundation, either version 3 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 more details.
 * 
 * You should have received a copy of the GNU General Public License 
 * along with this program in the file LICENSE. 
 * If not, see http://www.gnu.org/licenses/
 */

    error_reporting(0);
    ini_set("log_errors", "1");
    ini_set("display_errors", "0");

    // include configuration
    require_once("config/lms_config.inc.php");

    if (DEBUG === TRUE) {
        // be verbose
        error_reporting(E_ALL | E_STRICT);
        ini_set("display_errors", "1");
    }

    // include localization strings
    // as a side effect the array $l10n is defined inside the included file
    require_once("locale/" . LMS_LANG . ".inc.php");

    // set some global constants
    define("THIS_FILE", $_SERVER['SCRIPT_FILENAME']);
    // determine used protocol from request headers
    $proto = "http";
    if (isset($_SERVER["HTTPS"]) and $_SERVER["HTTPS"] == "on") {
        $proto .= "s";
    }
    // create correct base URL 
    $temp_url = preg_replace('-^https?-', '', LMS_URL);
    $temp_url = $proto . $temp_url;
    if (substr($temp_url, -1, 1) != '/') {
        $temp_url .= '/';
    }
    define("MAIN_URL", $temp_url . 'index.php');
    define("REDIR_URL", $temp_url . 'count.php');
    define("THIS_URL", $proto . '://' . $_SERVER['SERVER_NAME'] . $_SERVER['REQUEST_URI']);

    // include shared code
    require_once("linklist.inc.php");
    require_once("mm_shared.inc.php");

    // get database handle
    $db = mm_db_connect(DB_HOST, DB_USER, DB_PASS, DB_DB, DB_TYPE);
    if (!$db) {
        print_begin(LMS_NAME);
        print_error($l10n['err_db_conn']);
        print_end();
        exit;
    }

    // get id of authenticated user (fetched from http environment)
    $userid = get_userid($_SERVER['REMOTE_USER'], $db);
    // write access must be authorized (public user id "0" is not allowed here)
    $edit_ok = ($userid == 0) ? FALSE : TRUE;

    $cats = array();
    $cats[0]["depth"] = -1;
    // this function fills the global array $cats with all categories
    build_cat_tree($cats, 0, 0, $userid, $db);

    // output all configuration parameters for debugging
    if (DEBUG === TRUE) {
        print "<pre>\n\n\n\n";
        print "proto = $proto\ntemp url = $temp_url\nTHIS = ". THIS_URL ."\nMAIN = ". MAIN_URL . "\nREDIR = ". REDIR_URL ."\n";
        print "userid = $userid\nwrite access = ". ($edit_ok ? "TRUE" : "FALSE") ."\n";
        print_r($_POST);
        //print_r($cats);
        print "</pre>\n";
    }

    print_begin(LMS_NAME);
    print_nav($cats, $edit_ok);
    if (isset($_GET['added']) and $_GET['added'] == "true") {
       print_msg($l10n['txt_added_entry']);
       print '    <div class="hr2ns"></div>'."\n";
    }

    // print all categories recursively
    $root = 0;
    if (isset($_POST['searchkey']) and $_POST['searchkey'] != "") {
        // sanitize string for use in sql queries
        $search_term = mm_db_filter_input($db, $_POST['searchkey'], DB_TYPE);
	print_search($search_term, $userid, $cats, $db);
    } elseif (isset($_POST['showtree'])) {
        $root = intval($_POST['showtree']);
        if ($root == -2) {
	    print_top_links(TOPLIST, $userid, $cats, $db);
        } elseif ($root == -1) {
	    print_private($userid, $db);
        } elseif ($root >= 0) {
            print_menulist($root, $cats);
            print_cat($root, $userid, $cats, $db);
        }
    } elseif (isset($_GET['show']) and $_GET['show'] == "private") {
	print_private($userid, $db);
    } elseif (isset($_GET['show']) and intval($_GET['show']) >= 0) {
	$root = intval($_GET['show']);
	print_menulist($root, $cats);
	print_cat($root, $userid, $cats, $db);
    } else {
	print_top_links(TOPLIST, $userid, $cats, $db);
    }

    print_end();

    mm_db_close($db, DB_TYPE);

?>