<?php
require 'vendor/autoload.php';

$eventsUrl = "https://www.journee-mondiale.com/les-journees-mondiales.htm";
$outputFile = "/app/data/public/daily_events_rss.xml";
$timezone = "Europe/Brussels";
date_default_timezone_set($timezone);

@mkdir(dirname($outputFile), 0777, true);

$monthsTranslation = [
    'January' => 'janvier', 'February' => 'février', 'March' => 'mars',
    'April' => 'avril', 'May' => 'mai', 'June' => 'juin', 'July' => 'juillet',
    'August' => 'août', 'September' => 'septembre', 'October' => 'octobre',
    'November' => 'novembre', 'December' => 'décembre'
];

$currentDate = date("j F");
$currentDateParts = explode(' ', $currentDate);
$currentDay = $currentDateParts[0];
$currentMonth = $monthsTranslation[$currentDateParts[1]] ?? $currentDateParts[1];
$currentDateFr = $currentDay . ' ' . $currentMonth;

$html = file_get_contents($eventsUrl);
if (!$html) die;

preg_match_all(
    '/<li[^>]*><a href="([^"]+)"[^>]*><time datetime="([^"]+)"[^>]*>([^<]+)<\/time> : ([^<]+)<\/a><\/li>/',
    $html,
    $matches,
    PREG_SET_ORDER
);

$events = array_filter(array_map(function ($match) use ($currentDateFr) {
    $eventDate = str_replace(["\xc2\xa0", "1 "], [" ", "1er "], mb_strtolower(trim($match[2])));
    $currentDateNormalized = str_replace("\xc2\xa0", " ", mb_strtolower($currentDateFr));
    return $eventDate === $currentDateNormalized ? [
        "url" => htmlspecialchars($match[1]),
        "date" => htmlspecialchars($match[2]),
        "event" => htmlspecialchars($match[4])
    ] : null;
}, $matches));

if (empty($events)) exit;

function fetchEventContent($url) {
    $contentHtml = file_get_contents($url);
    if (!$contentHtml) return null;

    preg_match(
        '/<section[^>]*itemprop="description"[^>]*>(.*?)<\/section>/s',
        $contentHtml,
        $contentMatch
    );

    return $contentMatch[1] ?? null;
}

$rss = new SimpleXMLElement('<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"></rss>');
$channel = $rss->addChild('channel');
$channel->addChild('title', "Flux RSS des journées mondiales");
$channel->addChild('link', $eventsUrl);
$channel->addChild('description', "Flux des journées mondiales pour la date du $currentDateFr.");
$channel->addChild('language', 'fr');
$channel->addChild('pubDate', date(DATE_RSS));

foreach ($events as $event) {
    $content = fetchEventContent($event['url']);
    $item = $channel->addChild('item');
    $item->addChild('title', $event['event']);
    $item->addChild('link', $event['url']);
    $item->addChild('guid', $event['url']);
    $item->addChild('pubDate', date(DATE_RSS));
    $item->addChild('description', $content ? htmlspecialchars($content) : "Description indisponible.");
}

$rss->asXML($outputFile);
echo "Flux RSS généré à $outputFile avec " . count($events) . " événements pour aujourd'hui.\n";