<?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];
    }
}