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/_inc/functions.php

<?php
declare(strict_types=1);

function simon_config(?string $key = null, mixed $default = null): mixed
{
    static $config = null;
    if ($config === null) {
        $config = require __DIR__ . '/config.php';
    }

if ($key === null || $key === '') {
        return $config;
    }

$segments = explode('.', $key);
    $value = $config;
    foreach ($segments as $segment) {
        if (!is_array($value) || !array_key_exists($segment, $value)) {
            return $default;
        }
        $value = $value[$segment];
    }
    return $value;
}

function simon_h(string $value): string
{
    return htmlspecialchars($value, ENT_QUOTES, 'UTF-8');
}

function simon_now(string $format = DATE_ATOM): string
{
    return (new DateTimeImmutable('now', new DateTimeZone((string) simon_config('app.timezone', 'UTC'))))->format($format);
}

function simon_request_uri(): string
{
    return (string)($_SERVER['REQUEST_URI'] ?? '/');
}

function simon_method(): string
{
    return strtoupper((string)($_SERVER['REQUEST_METHOD'] ?? 'GET'));
}

function simon_is_post(): bool
{
    return simon_method() === 'POST';
}

function simon_json_read(string $file, array $fallback = []): array
{
    if (!is_file($file)) {
        return $fallback;
    }

$raw = file_get_contents($file);
    if ($raw === false || $raw === '') {
        return $fallback;
    }

$decoded = json_decode($raw, true);
    return is_array($decoded) ? $decoded : $fallback;
}

function simon_json_write(string $file, array $payload): bool
{
    $dir = dirname($file);
    if (!is_dir($dir) && !mkdir($dir, 0775, true) && !is_dir($dir)) {
        return false;
    }

$json = json_encode($payload, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES);
    return $json !== false && file_put_contents($file, $json . PHP_EOL, LOCK_EX) !== false;
}

function simon_status_badge(string $status): string
{
    return match (strtolower($status)) {
        'ok', 'healthy', 'ready', 'active' => '🟢 ' . $status,
        'warning', 'degraded', 'pending' => '🟡 ' . $status,
        'error', 'failed', 'offline', 'blocked' => '🔴 ' . $status,
        default => '⚪ ' . $status,
    };
}

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