<?php

declare(strict_types=1);

namespace TFGraphics\SmartImport\Intelligence;

use TFGraphics\SmartImport\Domain\DTO\ProductDTO;
use TFGraphics\SmartImport\Integration\PreviewAnalysis;
use TFGraphics\SmartImport\Enrichment\ProductReadinessAssessor;

/** Adapts existing PreviewAnalysis values for cards and applies stable ranking. */
final class ResultCardIntelligence
{
    public function __construct(
        private ?ResultCompletenessScorer $completeness = null,
        private ?ProductReadinessAssessor $readiness = null
    ) {
        $this->completeness ??= new ResultCompletenessScorer();
        $this->readiness ??= new ProductReadinessAssessor();
    }

    public function metrics(ProductDTO $product, ?PreviewAnalysis $analysis, ?string $domainHint = null): array
    {
        $quality = $analysis?->getQualitySummary();
        $readiness = $this->readiness->assess($product, $domainHint);
        return [
            'product_score' => $analysis?->getProductScore(),
            'confidence' => $analysis?->getConfidenceScore(),
            'quality_score' => $quality?->getScore(),
            'quality_grade' => $quality?->getGrade(),
            'completeness' => $this->completeness->score($product),
            // The card and the selected preview use the same readiness
            // assessor. Technical PI remains available but is not the
            // operator-facing completeness measure.
            'content_score' => $readiness->getContentScore(),
            'field_groups' => $readiness->getFieldGroups(),
            'commerce_score' => $readiness->getCommerceScore(),
            'domain' => $readiness->getDomain(),
            'missing_commerce_fields' => $readiness->getMissingCommerceFields(),
        ];
    }

    public function rank(array $results): array
    {
        if ($results === []) {
            return [];
        }

        foreach ($results as $index => &$result) { $result['_original_order'] = $index; }
        unset($result);
        usort($results, static function (array $left, array $right): int {
            foreach (['product_score', 'confidence', 'quality_score', 'completeness'] as $metric) {
                $comparison = ($right['intelligence'][$metric] ?? -1) <=> ($left['intelligence'][$metric] ?? -1);
                if ($comparison !== 0) { return $comparison; }
            }
            return $left['_original_order'] <=> $right['_original_order'];
        });

        $best = $results[0]['intelligence']['product_score'] ?? null;
        $second = $results[1]['intelligence']['product_score'] ?? null;
        if (count($results) >= 2 && is_float($best) && is_float($second)
            && $best >= 0.65 && $best - $second >= 0.08) {
            $results[0]['recommended'] = true;
        }
        foreach ($results as &$result) { unset($result['_original_order']); }
        return $results;
    }
}