<?php

declare(strict_types=1);

namespace TFGraphics\SmartImport\Knowledge;

final class KnowledgeSource
{
    private string $provider;
    private float $score;
    private array $attributes;

    public function __construct(string $provider, float $score, array $attributes = [])
    {
        $provider = trim($provider);
        if ($provider === '') {
            throw new \InvalidArgumentException('Knowledge source provider cannot be empty.');
        }

        $this->provider = $provider;
        $this->score = max(0.0, min(1.0, $score));
        $this->attributes = $attributes;
    }

    public function getProvider(): string
    {
        return $this->provider;
    }

    public function getScore(): float
    {
        return $this->score;
    }

    public function getAttributes(): array
    {
        return $this->attributes;
    }

    public function toArray(): array
    {
        return [
            'provider' => $this->provider,
            'score' => $this->score,
            'attributes' => $this->attributes,
        ];
    }
}