<?php

declare(strict_types=1);

namespace App\Services\TenantReviews;

use App\Models\EvidenceSnapshot;
use App\Models\TenantReview;
use App\Support\TenantReviewStatus;

final class TenantReviewComposer
{
    public function __construct(
        private readonly TenantReviewFingerprint $fingerprint,
        private readonly TenantReviewSectionFactory $sectionFactory,
        private readonly TenantReviewReadinessGate $readinessGate,
    ) {}

    /**
     * @return array{
     *     fingerprint: string,
     *     completeness_state: string,
     *     status: string,
     *     summary: array<string, mixed>,
     *     sections: list<array<string, mixed>>
     * }
     */
    public function compose(EvidenceSnapshot $snapshot, ?TenantReview $review = null): array
    {
        $tenant = $snapshot->tenant;

        if ($tenant === null) {
            throw new \RuntimeException('Evidence snapshot tenant is required for review composition.');
        }

        $sections = $this->sectionFactory->make($snapshot);
        $blockers = $this->readinessGate->blockersForSections($sections);
        $sectionStateCounts = $this->readinessGate->sectionStateCounts($sections);
        $completeness = $this->readinessGate->completenessForSections($sections);
        $status = $this->readinessGate->statusForSections($sections);
        $controlInterpretationSection = collect($sections)
            ->firstWhere('section_key', 'control_interpretation');
        $operationsSection = collect($sections)
            ->firstWhere('section_key', 'operations_health');

        if ($review instanceof TenantReview && $review->isPublished()) {
            $status = TenantReviewStatus::Published;
        }

        return [
            'fingerprint' => $this->fingerprint->forSnapshot($tenant, $snapshot),
            'completeness_state' => $completeness->value,
            'status' => $status->value,
            'summary' => [
                'evidence_basis' => [
                    'snapshot_id' => (int) $snapshot->getKey(),
                    'snapshot_fingerprint' => (string) $snapshot->fingerprint,
                    'snapshot_completeness_state' => (string) $snapshot->completeness_state,
                    'snapshot_generated_at' => $snapshot->generated_at?->toIso8601String(),
                ],
                'section_count' => count($sections),
                'section_state_counts' => $sectionStateCounts,
                'publish_blockers' => $blockers,
                'has_ready_export' => false,
                'finding_count' => (int) data_get($sections, '0.summary_payload.finding_count', 0),
                'finding_outcomes' => is_array(data_get($sections, '0.summary_payload.finding_outcomes'))
                    ? data_get($sections, '0.summary_payload.finding_outcomes')
                    : [],
                'finding_report_buckets' => is_array(data_get($sections, '0.summary_payload.finding_report_buckets'))
                    ? data_get($sections, '0.summary_payload.finding_report_buckets')
                    : [],
                'canonical_controls' => is_array(data_get($sections, '0.summary_payload.canonical_controls'))
                    ? data_get($sections, '0.summary_payload.canonical_controls')
                    : [],
                'control_interpretation' => is_array(data_get($controlInterpretationSection, 'summary_payload'))
                    ? array_merge(
                        data_get($controlInterpretationSection, 'summary_payload'),
                        [
                            'controls' => is_array(data_get($controlInterpretationSection, 'render_payload.entries'))
                                ? data_get($controlInterpretationSection, 'render_payload.entries')
                                : [],
                        ],
                    )
                    : [],
                'report_count' => 2,
                'operation_count' => (int) data_get($operationsSection, 'summary_payload.operation_count', 0),
                'highlights' => data_get($sections, '0.render_payload.highlights', []),
                'recommended_next_actions' => data_get($sections, '0.render_payload.next_actions', []),
                'last_composed_at' => now()->toIso8601String(),
            ],
            'sections' => $sections,
        ];
    }
}