<?php

/**
 * Build-time cache generator for DI container service discovery.
 *
 * Usage:
 *   php build-di-cache.php                        # Core plugin only
 *   php build-di-cache.php booknetic-{addon-name}  # Specific addon
 *
 * Scans all classes with #[Service] attribute and ServiceProviderInterface
 * implementations, and writes a cache file that eliminates runtime reflection.
 */

require_once __DIR__ . '/vendor/autoload.php';

use BookneticApp\Providers\IoC\ServiceScanner;

$addonArg = $argv[1] ?? null;

if ($addonArg !== null) {
    $addonDir = dirname(__DIR__) . '/' . $addonArg;

    if (! is_dir($addonDir)) {
        echo "Error: Addon directory not found: {$addonDir}\n";
        exit(1);
    }

    $addonAutoloader = $addonDir . '/vendor/autoload.php';

    if (file_exists($addonAutoloader)) {
        require_once $addonAutoloader;
    }

    $scanDir = $addonDir . '/App';
    $cacheDir = $addonDir . '/cache';
    $cachePath = $cacheDir . '/di_cache.php';

    echo "Building DI cache for addon: {$addonArg}\n";
} else {
    $scanDir = __DIR__ . '/app';
    $cacheDir = __DIR__ . '/cache';
    $cachePath = $cacheDir . '/di_cache.php';

    echo "Building DI cache for core plugin\n";
}

if (! is_dir($scanDir)) {
    echo "Error: Scan directory not found: {$scanDir}\n";
    exit(1);
}

if (! is_dir($cacheDir)) {
    mkdir($cacheDir, 0755, true);
}

echo "Scanning for #[Service] classes in {$scanDir}...\n";

$scanner = new ServiceScanner($scanDir);
$result = $scanner->scan();

echo 'Found ' . count($result['services']) . " services.\n";

foreach ($result['services'] as $fqcn => $meta) {
    echo "  [{$meta['lifetime']}] {$fqcn}\n";
}

if (! empty($result['bindings'])) {
    echo "\nBindings:\n";

    foreach ($result['bindings'] as $interface => $concrete) {
        echo "  {$interface} → {$concrete}\n";
    }
}

if (! empty($result['providers'])) {
    echo "\nServiceProviders:\n";

    foreach ($result['providers'] as $provider) {
        echo "  {$provider}\n";
    }
}

$cacheContent = "<?php\n\n// Auto-generated by build-di-cache.php — do NOT edit manually.\n// Generated: " . date('Y-m-d H:i:s') . "\n\nreturn " . var_export([
    'services'  => $result['services'],
    'bindings'  => $result['bindings'],
    'providers' => $result['providers'],
], true) . ";\n";

file_put_contents($cachePath, $cacheContent);

echo "\nCache written to: {$cachePath}\n";
echo 'Services: ' . count($result['services']) . ', Bindings: ' . count($result['bindings']) . ', Providers: ' . count($result['providers']) . "\n";
echo "Done.\n";