<?php

declare(strict_types=1);

namespace Classifier\Lib\Model;

use Classifier\Lib\Enum\MessageType;

class Prediction
{
    // FIXME : php8.1 readonly props

    /**
     * Label final (avec gestion du doute)
     * @var MessageType
     */
    public $decision;

    /**
     * Label le plus probable selon le modèle entrainé (avant application du seuil de doute)
     * @var MessageType
     */
    public $machineDecision;

    /**
     * Méthode qui a conduit à la décision
     * @var string
     */
    public $method;

    /**
     * Score (0.0 à 1.0)
     * @var float
     */
    public $confidence;

    /**
     * Détail complet
     * @var array<string,float>
     */
    public $scores;

    public function __construct(
        MessageType $decision,
        MessageType $machineDecision,
        string $method,
        float $confidence,
        array $scores = []
    ) {
        $this->decision = $decision;
        $this->machineDecision = $machineDecision;
        $this->method = $method;
        $this->confidence = $confidence;
        $this->scores = $scores;

        foreach ($scores as $label => $score) {
            if (empty($label) || !is_string($label)) {
                throw new \InvalidArgumentException("Label de score invalide : " . var_export($label, true));
            }
            if ((!is_float($score) && !is_int($score)) || $score < 0.0 || $score > 1.0) {
                throw new \InvalidArgumentException("Score de label '$label' invalide : " . var_export($score, true));
            }
        }
    }
}