<?php

declare(strict_types=1);

namespace TFGraphics\SmartImport\Runtime;

use TFGraphics\SmartImport\ProviderFramework\ProviderExecutionPlan;
use TFGraphics\SmartImport\ProviderFramework\ProviderSelection;

final class RuntimeProviderPlanContext
{
    private ?ProviderExecutionPlan $plan = null;

    public function activate(ProviderExecutionPlan $plan): void
    {
        $this->plan = $plan;
    }

    public function clear(): void
    {
        $this->plan = null;
    }

    public function hasActivePlan(): bool
    {
        return $this->plan !== null;
    }

    public function getPlan(): ?ProviderExecutionPlan
    {
        return $this->plan;
    }

    public function getExecutableProviderNames(): array
    {
        if ($this->plan === null) return [];

        return array_values(array_map(
            static fn (ProviderSelection $selection): string => $selection->getProviderName(),
            array_filter(
                $this->plan->getSelections(),
                static fn ($selection): bool => $selection instanceof ProviderSelection && $selection->isExecutable()
            )
        ));
    }
}