<?php

declare(strict_types=1);

namespace App\Framework\Composer\ValueObjects;

use App\Framework\Composer\Exception\ComposerLockException;

/**
 * Immutable Value Object representing composer.lock data
 */
final readonly class ComposerLock
{
    /**
     * @param array<array<string, mixed>> $packages
     * @param array<array<string, mixed>> $packagesDev
     * @param array<string, mixed> $platform
     * @param array<string, mixed> $platformDev
     */
    public function __construct(
        public array $packages = [],
        public array $packagesDev = [],
        public array $platform = [],
        public array $platformDev = [],
        public ?string $contentHash = null
    ) {
    }

    /**
     * Create ComposerLock from file path
     */
    public static function fromFile(string $path): self
    {
        if (! file_exists($path)) {
            throw ComposerLockException::fileNotFound($path);
        }

        $content = @file_get_contents($path);
        if ($content === false) {
            throw ComposerLockException::couldNotRead($path, new \RuntimeException('file_get_contents failed'));
        }

        $data = json_decode($content, true);
        if (json_last_error() !== JSON_ERROR_NONE) {
            throw ComposerLockException::invalidJson($path, new \JsonException(json_last_error_msg()));
        }

        return self::fromArray($data);
    }

    /**
     * Create ComposerLock from array data
     *
     * @param array<string, mixed> $data
     */
    public static function fromArray(array $data): self
    {
        return new self(
            packages: $data['packages'] ?? [],
            packagesDev: $data['packages-dev'] ?? [],
            platform: $data['platform'] ?? [],
            platformDev: $data['platform-dev'] ?? [],
            contentHash: $data['content-hash'] ?? null
        );
    }

    /**
     * Get all packages (production + dev) as flat array
     *
     * @return array<array<string, mixed>>
     */
    public function getAllPackages(): array
    {
        return array_merge($this->packages, $this->packagesDev);
    }

    /**
     * Get package by name
     *
     * @return array<string, mixed>|null
     */
    public function getPackage(string $name): ?array
    {
        // Check production packages first
        foreach ($this->packages as $package) {
            if (isset($package['name']) && $package['name'] === $name) {
                return $package;
            }
        }

        // Check dev packages
        foreach ($this->packagesDev as $package) {
            if (isset($package['name']) && $package['name'] === $name) {
                return $package;
            }
        }

        return null;
    }

    /**
     * Check if package exists
     */
    public function hasPackage(string $name): bool
    {
        return $this->getPackage($name) !== null;
    }

    /**
     * Get packages with their type (production or dev)
     *
     * @return array<array{name: string, version: string, type: 'production'|'dev'}>
     */
    public function getPackagesWithType(): array
    {
        $result = [];

        foreach ($this->packages as $package) {
            if (isset($package['name']) && isset($package['version'])) {
                $result[] = [
                    'name' => $package['name'],
                    'version' => $package['version'],
                    'type' => 'production',
                ];
            }
        }

        foreach ($this->packagesDev as $package) {
            if (isset($package['name']) && isset($package['version'])) {
                $result[] = [
                    'name' => $package['name'],
                    'version' => $package['version'],
                    'type' => 'dev',
                ];
            }
        }

        return $result;
    }
}