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<?php
/**
* \file
* \brief LWT Start screen and main menu
*
* Call: index.php
*
* PHP version 8.1
*
* @category User_Interface
* @package Lwt
* @author LWT Project <lwt-project@hotmail.com>
* @license Unlicense <http://unlicense.org/>
* @link https://hugofara.github.io/lwt/docs/html/index_8php.html
* @since 1.0.3
*
* "Learning with Texts" (LWT) is free and unencumbered software
* released into the PUBLIC DOMAIN.
*
* Anyone is free to copy, modify, publish, use, compile, sell, or
* distribute this software, either in source code form or as a
* compiled binary, for any purpose, commercial or non-commercial,
* and by any means.
*
* In jurisdictions that recognize copyright laws, the author or
* authors of this software dedicate any and all copyright
* interest in the software to the public domain. We make this
* dedication for the benefit of the public at large and to the
* detriment of our heirs and successors. We intend this
* dedication to be an overt act of relinquishment in perpetuity
* of all present and future rights to this software under
* copyright law.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
* WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
* AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS BE LIABLE
* FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
* For more information, please refer to [http://unlicense.org/].
*/
/**
* Echo an error page if connect.inc.php was not found.
*
* @return void
*
* @since 2.7.0-fork Now display a link to the connect.ing.php creation wizard,
* return void instead of dying.
*/
function no_connectinc_error_page()
{
?>
<html>
<body>
<div style="padding: 1em; color:red; font-size:120%; background-color:#CEECF5;">
<p>
<b>Fatal Error:</b>
Cannot find file: "connect.inc.php"!<br />
Please do one of the following:
<ul>
<li>
Rename the correct file "connect_[servertype].inc.php" to "connect.inc.php"
([servertype] is the name of your server: xampp, mamp, or easyphp).
</li>
<li>
<a href="database_wizard.php">Use the wizard</a>.
</li>
</ul>
Please read the documentation: <a href="https://hugofara.github.io/lwt/README.md">https://hugofara.github.io/lwt/README.md</a>
</p>
</div>
</body>
</html>
<?php
}
if (!file_exists('connect.inc.php')) {
no_connectinc_error_page();
die('');
}
require_once 'inc/session_utility.php';
/**
* Prepare the different SPAN opening tags
*
* @return string[] 3 different span levels
*
* @global string $tbpref Database table prefix
* @global string $fixed_tbpref Fixed database table prefix
*
* @psalm-return list{'<span title="Manage Table Sets" onclick="location.href='table_set_management.php';" class="click">'|'<span>', string, '<span title="Select Table Set" onclick="location.href='start.php';" class="click">'|'<span>'}
*/
function get_span_groups(): array
{
global $tbpref, $fixed_tbpref;
if ($tbpref == '') {
$span2 = "<i>Default</i> Table Set</span>";
} else {
$span2 = "Table Set: <i>" . tohtml(substr($tbpref, 0, -1)) . "</i></span>";
}
if ($fixed_tbpref) {
$span1 = '<span>';
$span3 = '<span>';
} else {
$span1 = '<span title="Manage Table Sets" onclick="location.href=\'table_set_management.php\';" class="click">';
if (count(getprefixes()) > 0) {
$span3 = '<span title="Select Table Set" onclick="location.href=\'start.php\';" class="click">';
} else {
$span3 = '<span>';
}
}
return array($span1, $span2, $span3);
}
/**
* Display the current text options.
*
* @return void
*
* @global string $tbpref Database table prefix
*/
function do_current_text_info($textid)
{
global $tbpref;
$txttit = get_first_value(
'SELECT TxTitle AS value
FROM ' . $tbpref . 'texts
WHERE TxID=' . $textid
);
if (!isset($txttit)) {
return;
}
$txtlng = get_first_value(
'SELECT TxLgID AS value FROM ' . $tbpref . 'texts WHERE TxID=' . $textid
);
$lngname = getLanguage($txtlng);
$annotated = (int)get_first_value(
"SELECT LENGTH(TxAnnotatedText) AS value
FROM " . $tbpref . "texts
WHERE TxID = " . $textid
) > 0;
?>
<div style="height: 85px;">
Last Text (<?php echo tohtml($lngname); ?>):<br />
<i><?php echo tohtml($txttit); ?></i>
<br />
<a href="do_text.php?start=<?php echo $textid; ?>">
<img src="icn/book-open-bookmark.png" title="Read" alt="Read" /> Read
</a>
<a href="do_test.php?text=<?php echo $textid; ?>">
<img src="icn/question-balloon.png" title="Test" alt="Test" /> Test
</a>
<a href="print_text.php?text=<?php echo $textid; ?>">
<img src="icn/printer.png" title="Print" alt="Print" /> Print
</a>
<?php
if ($annotated) {
?>
<a href="print_impr_text.php?text=<?php echo $textid; ?>">
<img src="icn/tick.png" title="Improved Annotated Text" alt="Improved Annotated Text" /> Ann. Text
</a>
<?php
}
?>
</div>
<?php
}
/**
* Echo a select element to switch between languages.
*
* @return void
*/
function do_language_selectable($langid)
{
?>
<div for="filterlang">Language:
<select id="filterlang" onchange="{setLang(document.getElementById('filterlang'),'index.php');}">
<?php echo get_languages_selectoptions($langid, '[Select...]'); ?>
</select>
</div>
<?php
}
/**
* When on a WordPress server, make a logout button
*
* @return void
*/
function wordpress_logout_link()
{
if (isset($_SESSION['LWT-WP-User'])) {
?>
<div class="menu">
<a href="wp_lwt_stop.php">
<span style="font-size:115%; font-weight:bold; color:red;">LOGOUT</span> (from WordPress and LWT)
</a>
</div>
<?php
}
}
/**
* Return a lot of different server state variables.
*
* @return (false|float|string|string[])[] {0: string, 1: float, 2: string[], 3: string, 4: string, 5: string}
* Table prefix, database size, server software, apache version, PHP version, MySQL
* version
*
* @deprecated Use get_server_data_table, will be removed in 3.0.0.
*
* @psalm-return list{string, float, non-empty-list<string>, string, false|string, string}
* @global string $tbpref Database table prefix
* @global string $dbname Database name
*/
function get_server_data(): array
{
global $tbpref, $dbname;
$dbaccess_format = convert_string_to_sqlsyntax($dbname);
$data_table = array();
$data_table["prefix"] = convert_string_to_sqlsyntax_nonull($tbpref);
$data_table["db_size"] = (float)get_first_value(
"SELECT ROUND(SUM(data_length+index_length)/1024/1024, 1) AS value
FROM information_schema.TABLES
WHERE table_schema = $dbaccess_format
AND table_name IN (
'{$tbpref}archivedtexts', '{$tbpref}archtexttags', '{$tbpref}feedlinks', '{$tbpref}languages',
'{$tbpref}newsfeeds', '{$tbpref}sentences', '{$tbpref}settings', '{$tbpref}tags', '{$tbpref}tags2',
'{$tbpref}textitems2', '{$tbpref}texts', '{$tbpref}texttags', '{$tbpref}words', '{$tbpref}wordtags'
)"
);
if (!isset($data_table["db_size"])) {
$data_table["db_size"] = 0.0;
}
$data_table["serversoft"] = explode(' ', $_SERVER['SERVER_SOFTWARE']);
$data_table["apache"] = "Apache/?";
if (substr($data_table["serversoft"][0], 0, 7) == "Apache/") {
$data_table["apache"] = $data_table["serversoft"][0];
}
$data_table["php"] = phpversion();
$data_table["mysql"] = (string)get_first_value("SELECT VERSION() as value");
return array(
$data_table["prefix"], $data_table["db_size"], $data_table["serversoft"],
$data_table["apache"], $data_table["php"], $data_table["mysql"]
);
}
/**
* Load the content of warnings for visual display.
*
* @return void
*/
function index_load_warnings()
{
?>
<script type="text/javascript">
//<![CDATA[
const load_warnings = {
cookies_enabled: function () {
if (!areCookiesEnabled()) {
$('#cookies_disabled').html('*** Cookies are not enabled! Please enable them! ***');
}
},
php_version: function (php_version) {
const php_min_version = '8.0';
if (php_version < php_min_version) {
$('#php_update_required').html(
'*** Your PHP version is ' + php_version + ', but version ' +
php_min_version + ' is required. Please update it. ***'
)
}
},
lwt_version: function(lwt_version) {
$.getJSON(
'https://api.github.com/repos/hugofara/lwt/releases/latest'
).done(function (data) {
const lwt_latest_version = data.tag_name;
if (lwt_version < lwt_latest_version) {
$('#lwt_new_version').html(
'*** A newer release of LWT is released: ' +
lwt_latest_version +', your version is ' + lwt_version +
'. <a href="https://github.com/HugoFara/lwt/releases/tag/' +
lwt_latest_version + '">Download</a>.***');
}
});
}
}
load_warnings.cookies_enabled();
load_warnings.php_version(<?php echo json_encode(phpversion()); ?>);
load_warnings.lwt_version(<?php echo json_encode(get_version()); ?>);
//]]>
</script>
<?php
}
/**
* Display the main body of the page.
*
* @return void
*
* @global string $tbpref Database table prefix
* @global int $debug Debug mode enabled
*/
function index_do_main_page()
{
global $tbpref, $debug;
$currentlang = null;
if (is_numeric(getSetting('currentlanguage'))) {
$currentlang = (int) getSetting('currentlanguage');
}
$currenttext = null;
if (is_numeric(getSetting('currenttext'))) {
$currenttext = (int) getSetting('currenttext');
}
$langcnt = (int) get_first_value("SELECT COUNT(*) AS value FROM {$tbpref}languages");
pagestart_nobody(
"Home",
"
body {
max-width: 1920px;
margin: 20px;
}"
);
echo_lwt_logo();
echo '<h1>Learning With Texts (LWT)</h1>
<h2>Home' . ($debug ? ' <span class="red">DEBUG</span>' : '') . '</h2>';
?>
<div class="red"><p id="php_update_required"></p></div>
<div class="red"><p id="cookies_disabled"></p></div>
<div class="msgblue"><p id="lwt_new_version"></p></div>
<p style="text-align: center;">Welcome to your language learning app!</p>
<div style="display: flex; justify-content: space-evenly; flex-wrap: wrap;">
<div class="menu">
<?php
if ($langcnt == 0) {
?>
<div><p>Hint: The database seems to be empty.</p></div>
<a href="install_demo.php">Install the LWT demo database, </a>
<a href="edit_languages.php?new=1">Define the first language you want to learn.</a>
<?php
} else if ($langcnt > 0) {
do_language_selectable($currentlang);
if ($currenttext !== null) {
do_current_text_info($currenttext);
}
}
?>
<a href="edit_languages.php">Languages</a>
</div>
<div class="menu">
<a href="edit_texts.php">Texts</a>
<a href="edit_archivedtexts.php">Text Archive</a>
<a href="edit_texttags.php">Text Tags</a>
<a href="check_text.php">Check Text</a>
<a href="long_text_import.php">Import Long Text</a>
</div>
<div class="menu">
<a href="edit_words.php" title="View and edit saved words and expressions">Terms</a>
<a href="edit_tags.php">Term Tags</a>
<a href="upload_words.php">Import Terms</a>
</div>
<div class="menu">
<a href="do_feeds.php?check_autoupdate=1">Newsfeeds</a>
<a href="backup_restore.php" title="Backup, restore or empty database">Database</a>
</div>
<div class="menu">
<a href="statistics.php" title="Text statistics">Statistics</a>
<a href="docs/info.html">Help</a>
<a href="server_data.php" title="Various data useful for debug">Server Data</a>
</div>
<div class="menu">
<a href="settings.php">Settings</a>
<a href="text_to_speech_settings.php" title="Text-to-Speech settings">Text-to-Speech</a>
<a href="mobile.php" title="Mobile LWT is a legacy function">Mobile LWT (Deprecated)</a>
</div>
<?php wordpress_logout_link(); ?>
</div>
<p>
This is LWT Version <?php echo get_version(); ?>,
<a href="start.php"><?php echo ($tbpref == '' ? 'default table set' : 'table prefixed with "' . $tbpref . '"') ?></a>.
</p>
<br style="clear: both;" />
<footer>
<p class="small">
<a href="http://unlicense.org/" style="vertical-align: top;">
<img alt="Public Domain" title="Public Domain" src="img/public_domain.png" style="display: inline;" />
</a>
<a href="https://sourceforge.net/projects/learning-with-texts/" with Texts" (LWT)</a> is free
and unencumbered software released into the
<a href="https://en.wikipedia.org/wiki/Public_domain_software" DOMAIN</a>.
<a href="http://unlicense.org/" information and detailed Unlicense ...</a>
</p>
</footer>
<?php
index_load_warnings();
pageend();
}
index_do_main_page();
?>