<?php

declare(strict_types=1);

/** @var array<string, mixed> $app */
$app = require dirname(__DIR__) . '/src/bootstrap.php';

$config = $app['config'];
$service = $app['service'];

// Respect the TTL so long-lived pages stay fresh without hammering providers.
$refresh = $service->refreshStale();

$sources = $service->sources();
$source = $_GET['source'] ?? null;
if (!is_string($source) || !in_array($source, $sources, true)) {
    $source = null;
}

$ranges = $config['ranges'] ?? [];
$range = $_GET['range'] ?? '';
if (!is_string($range) || !array_key_exists($range, $ranges)) {
    $range = '';
}
$since = $range !== '' ? gmdate('c', time() - (int) $ranges[$range]) : null;

$pageNumber = max(1, (int) ($_GET['page'] ?? 1));
$page = $service->page($source, $pageNumber, (int) $config['page_size'], $since);

$html = App\View::render('cards', ['items' => $page['items']]);

header('Content-Type: application/json; charset=utf-8');
header('Cache-Control: no-store');

echo json_encode([
    'html' => $html,
    'page' => $page['page'],
    'page_size' => $page['page_size'],
    'count' => count($page['items']),
    'total' => $page['total'],
    'has_more' => $page['has_more'],
    'range' => $range,
    'refresh' => $refresh,
], JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);