<?php

namespace Modules\Marketplace\Services;

use Modules\Marketplace\Models\InstalledPackage;

final class DependencyResolver
{
    public function __construct(private VersionConstraint $constraints = new VersionConstraint) {}

    public function resolve(array $manifest): array
    {
        $missing = [];
        $incompatible = [];
        foreach (($manifest['requires'] ?? []) as $package => $constraint) {
            $installed = InstalledPackage::query()->where('package_name', $package)->where('status', 'installed')->first();
            if (! $installed) {
                $missing[$package] = $constraint;

                continue;
            }
            if (! $this->constraints->matches($installed->version, (string) $constraint)) {
                $incompatible[$package] = ['required' => $constraint, 'installed' => $installed->version];
            }
        }

        return ['satisfied' => $missing === [] && $incompatible === [], 'missing' => $missing, 'incompatible' => $incompatible];
    }
}