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/live/bootstrap.php

<?php
declare(strict_types=1);

const SIMON_FEED_VERSION = '3.0.0-mission-control';
const SIMON_ROOT = __DIR__;
const SIMON_CACHE_DIR = SIMON_ROOT . '/cache';
const SIMON_LOG_DIR = SIMON_ROOT . '/logs';
const SIMON_DATA_DIR = SIMON_ROOT . '/data';
const SIMON_BACKUP_DIR = SIMON_ROOT . '/backups';
const SIMON_FEEDS_FILE = SIMON_ROOT . '/feeds.json';
const SIMON_DIAGNOSTIC_LOG = SIMON_LOG_DIR . '/diagnostics.ndjson';

// Production-safe error handling: log details, avoid leaking internals to visitors.
ini_set('log_errors', '1');
ini_set('error_log', SIMON_LOG_DIR . '/php_errors.log');
if (!defined('SIMON_DEBUG')) define('SIMON_DEBUG', isset($_GET['debug']) && $_GET['debug'] === '1');
ini_set('display_errors', SIMON_DEBUG ? '1' : '0');
error_reporting(E_ALL);
set_exception_handler(function (Throwable $e): void {
    @file_put_contents(SIMON_DIAGNOSTIC_LOG, json_encode([
        'at'=>gmdate('c'),'type'=>'uncaught_exception','message'=>$e->getMessage(),
        'file'=>$e->getFile(),'line'=>$e->getLine()
    ], JSON_UNESCAPED_SLASHES|JSON_UNESCAPED_UNICODE)."
", FILE_APPEND|LOCK_EX);
    if (!headers_sent()) http_response_code(500);
    if (SIMON_DEBUG) echo '<pre>'.htmlspecialchars((string)$e, ENT_QUOTES, 'UTF-8').'</pre>';
    else echo 'SIMON encountered an error. Open system_check.php for diagnostics.';
});

foreach ([SIMON_CACHE_DIR, SIMON_LOG_DIR, SIMON_DATA_DIR, SIMON_BACKUP_DIR] as $dir) {
    if (!is_dir($dir)) @mkdir($dir, 0775, true);
}

function simon_slug(string $value, string $fallback = 'feed'): string {
    $value = strtolower(trim($value));
    $value = preg_replace('/[^a-z0-9_\-]+/', '_', $value) ?? '';
    $value = trim($value, '_-');
    return $value !== '' ? $value : $fallback;
}

function simon_backup_file(string $path, string $reason = 'save'): ?string {
    if (!is_file($path)) return null;
    if (!is_dir(SIMON_BACKUP_DIR)) @mkdir(SIMON_BACKUP_DIR, 0775, true);
    $name = pathinfo($path, PATHINFO_FILENAME);
    $stamp = gmdate('Ymd_His');
    $safeReason = simon_slug($reason, 'backup');
    $dest = SIMON_BACKUP_DIR . '/' . $name . '_' . $safeReason . '_' . $stamp . '.json';
    return @copy($path, $dest) ? $dest : null;
}

function simon_json_response(array $payload, int $status = 200): void {
    http_response_code($status);
    header('Content-Type: application/json; charset=utf-8');
    header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
    echo json_encode($payload, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
    exit;
}

function simon_read_json_file(string $path, $default = []): mixed {
    if (!is_file($path)) return $default;
    $raw = file_get_contents($path);
    if ($raw === false || trim($raw) === '') return $default;
    $data = json_decode($raw, true);
    return json_last_error() === JSON_ERROR_NONE ? $data : $default;
}

function simon_write_json_file(string $path, mixed $data): bool {
    $tmp = $path . '.tmp';
    $json = json_encode($data, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE | JSON_PRETTY_PRINT);
    if ($json === false) return false;
    if (file_put_contents($tmp, $json, LOCK_EX) === false) return false;
    return rename($tmp, $path);
}

function simon_log(string $type, array $event): void {
    $event['type'] = $type;
    $event['at'] = gmdate('c');
    $line = json_encode($event, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE) . "\n";
    @file_put_contents(SIMON_LOG_DIR . '/feed_events.ndjson', $line, FILE_APPEND | LOCK_EX);
}

function simon_cache_key(array $feed, array $extra = []): string {
    return preg_replace('/[^a-zA-Z0-9_\-]/', '_', ($feed['id'] ?? 'feed')) . '_' . substr(sha1(json_encode([$feed, $extra])), 0, 12) . '.json';
}

function simon_cache_get(string $key, int $ttl): ?array {
    $path = SIMON_CACHE_DIR . '/' . $key;
    if (!is_file($path)) return null;
    if ($ttl > 0 && (time() - filemtime($path)) > $ttl) return null;
    $data = simon_read_json_file($path, null);
    return is_array($data) ? $data : null;
}

function simon_cache_set(string $key, array $data): void {
    @simon_write_json_file(SIMON_CACHE_DIR . '/' . $key, $data);
}

function simon_get_path(array $data, string $path, mixed $default = null): mixed {
    $cur = $data;
    foreach (explode('.', $path) as $part) {
        if (is_array($cur) && array_key_exists($part, $cur)) $cur = $cur[$part];
        else return $default;
    }
    return $cur;
}

function simon_clean_text(mixed $value, int $max = 600): string {
    $text = trim(strip_tags(html_entity_decode((string)$value, ENT_QUOTES | ENT_HTML5, 'UTF-8')));
    $text = preg_replace('/\s+/', ' ', $text) ?? $text;
    if (mb_strlen($text) > $max) $text = mb_substr($text, 0, $max - 1) . '…';
    return $text;
}

function simon_event(array $feed, array $raw): array {
    $title = simon_clean_text($raw['title'] ?? $raw['name'] ?? $raw['headline'] ?? 'Untitled');
    $summary = simon_clean_text($raw['summary'] ?? $raw['description'] ?? $raw['text'] ?? $raw['body'] ?? '', 900);
    $url = trim((string)($raw['url'] ?? $raw['link'] ?? $raw['href'] ?? ''));
    if ($url !== '' && preg_match('/^www\./i', $url)) $url = 'https://' . $url;
    $published = (string)($raw['published'] ?? $raw['publishedAt'] ?? $raw['date'] ?? $raw['time'] ?? gmdate('c'));
    $timestamp = strtotime($published) ?: time();
    $hash = sha1(($feed['id'] ?? '') . '|' . $title . '|' . $url . '|' . $timestamp);
    $priority = (float)($feed['priority'] ?? 50);
    $ageHours = max(0, (time() - $timestamp) / 3600);
    $fresh = max(0.15, 1 - min(1, $ageHours / 72));
    $score = round(min(100, ($priority * 0.65) + ($fresh * 35)), 2);
    return [
        'id' => $hash,
        'source_id' => (string)($feed['id'] ?? 'unknown'),
        'source' => (string)($feed['name'] ?? ($feed['id'] ?? 'Unknown')),
        'category' => (string)($feed['category'] ?? 'general'),
        'engine' => (string)($feed['engine'] ?? 'unknown'),
        'title' => $title,
        'summary' => $summary,
        'url' => $url,
        'image' => (string)($raw['image'] ?? ''),
        'published' => gmdate('c', $timestamp),
        'score' => $score,
        'color' => (string)($feed['color'] ?? '#4be3ff'),
        'raw' => $raw,
    ];
}

function simon_load_provider(string $engine): ?callable {
    $engine = preg_replace('/[^a-zA-Z0-9_\-]/', '', $engine);
    $path = SIMON_ROOT . '/providers/' . $engine . '.php';
    if (!is_file($path)) return null;
    require_once $path;
    $fn = 'simon_provider_' . str_replace('-', '_', $engine);
    return function_exists($fn) ? $fn : null;
}

function simon_dedupe_events(array $events): array {
    $seen = [];
    $out = [];
    foreach ($events as $event) {
        $key = strtolower(trim((string)($event['url'] ?: $event['title'])));
        $key = preg_replace('/[?#].*$/', '', $key) ?: (string)$event['id'];
        if (isset($seen[$key])) continue;
        $seen[$key] = true;
        $out[] = $event;
    }
    return $out;
}

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