<?php

declare(strict_types=1);

namespace App\Services\Evidence\Sources;

use App\Models\Finding;
use App\Models\Tenant;
use App\Services\Evidence\Contracts\EvidenceSourceProvider;
use App\Support\Evidence\EvidenceCompletenessState;

final class FindingsSummarySource implements EvidenceSourceProvider
{
    public function key(): string
    {
        return 'findings_summary';
    }

    public function collect(Tenant $tenant): array
    {
        $findings = Finding::query()
            ->where('tenant_id', (int) $tenant->getKey())
            ->orderByDesc('updated_at')
            ->get();

        $latest = $findings->max('updated_at') ?? $findings->max('created_at');

        $summary = [
            'count' => $findings->count(),
            'open_count' => $findings->filter(fn (Finding $finding): bool => $finding->hasOpenStatus())->count(),
            'severity_counts' => [
                'critical' => $findings->where('severity', Finding::SEVERITY_CRITICAL)->count(),
                'high' => $findings->where('severity', Finding::SEVERITY_HIGH)->count(),
                'medium' => $findings->where('severity', Finding::SEVERITY_MEDIUM)->count(),
                'low' => $findings->where('severity', Finding::SEVERITY_LOW)->count(),
            ],
            'entries' => $findings->map(static fn (Finding $finding): array => [
                'id' => (int) $finding->getKey(),
                'finding_type' => (string) $finding->finding_type,
                'severity' => (string) $finding->severity,
                'status' => (string) $finding->status,
                'title' => $finding->title,
                'description' => $finding->description,
                'created_at' => $finding->created_at?->toIso8601String(),
                'updated_at' => $finding->updated_at?->toIso8601String(),
            ])->all(),
        ];

        return [
            'dimension_key' => $this->key(),
            'state' => $findings->isEmpty() ? EvidenceCompletenessState::Missing->value : EvidenceCompletenessState::Complete->value,
            'required' => true,
            'source_kind' => 'model_summary',
            'source_record_type' => 'finding',
            'source_record_id' => null,
            'source_fingerprint' => $findings->max('fingerprint'),
            'measured_at' => $latest,
            'freshness_at' => $latest,
            'summary_payload' => $summary,
            'fingerprint_payload' => $summary + ['latest' => $latest?->format(DATE_ATOM)],
            'sort_order' => 10,
        ];
    }
}