<?php

declare(strict_types=1);

namespace App\Filament\Widgets\Dashboard;

use App\Filament\Pages\BaselineCompareLanding;
use App\Filament\Resources\FindingResource;
use App\Models\FindingException;
use App\Models\OperationRun;
use App\Models\Tenant;
use App\Models\User;
use App\Support\Auth\Capabilities;
use App\Support\Baselines\TenantGovernanceAggregate;
use App\Support\Baselines\TenantGovernanceAggregateResolver;
use App\Support\OperationRunLinks;
use App\Support\OpsUx\ActiveRuns;
use App\Support\Rbac\UiTooltips;
use Filament\Facades\Filament;
use Filament\Widgets\Widget;

class NeedsAttention extends Widget
{
    protected string $view = 'filament.widgets.dashboard.needs-attention';

    /**
     * @return array<string, mixed>
     */
    protected function getViewData(): array
    {
        $tenant = Filament::getTenant();

        if (! $tenant instanceof Tenant) {
            return [
                'pollingInterval' => null,
                'items' => [],
                'healthyChecks' => [],
            ];
        }

        $tenantId = (int) $tenant->getKey();
        $aggregate = $this->governanceAggregate($tenant);
        $compareAssessment = $aggregate->summaryAssessment;

        $items = [];

        $overdueOpenCount = $aggregate->overdueOpenFindingsCount;
        $lapsedGovernanceCount = $aggregate->lapsedGovernanceCount;
        $expiringGovernanceCount = $aggregate->expiringGovernanceCount;
        $highSeverityCount = $aggregate->highSeverityActiveFindingsCount;
        $operationsFollowUpCount = (int) OperationRun::query()
            ->where('tenant_id', $tenantId)
            ->dashboardNeedsFollowUp()
            ->count();
        $activeRuns = (int) OperationRun::query()
            ->where('tenant_id', $tenantId)
            ->healthyActive()
            ->count();

        if ($lapsedGovernanceCount > 0) {
            $items[] = [
                'key' => 'lapsed_governance',
                'title' => 'Lapsed accepted-risk governance',
                'body' => "{$lapsedGovernanceCount} accepted-risk finding(s) no longer have valid supporting governance.",
                'badge' => 'Governance',
                'badgeColor' => 'danger',
                ...$this->findingsAction(
                    $tenant,
                    'Open findings',
                    [
                        'tab' => 'risk_accepted',
                        'governance_validity' => FindingException::VALIDITY_MISSING_SUPPORT,
                    ],
                ),
            ];
        }

        if ($overdueOpenCount > 0) {
            $items[] = [
                'key' => 'overdue_findings',
                'title' => 'Overdue findings',
                'body' => "{$overdueOpenCount} open finding(s) are overdue and still need workflow follow-up.",
                'badge' => 'Findings',
                'badgeColor' => 'danger',
                ...$this->findingsAction(
                    $tenant,
                    'Open findings',
                    ['tab' => 'overdue'],
                ),
            ];
        }

        if ($expiringGovernanceCount > 0) {
            $items[] = [
                'key' => 'expiring_governance',
                'title' => 'Expiring accepted-risk governance',
                'body' => "{$expiringGovernanceCount} accepted-risk finding(s) need governance review soon.",
                'badge' => 'Governance',
                'badgeColor' => 'warning',
                ...$this->findingsAction(
                    $tenant,
                    'Open findings',
                    [
                        'tab' => 'risk_accepted',
                        'governance_validity' => FindingException::VALIDITY_EXPIRING,
                    ],
                ),
            ];
        }

        if ($highSeverityCount > 0) {
            $items[] = [
                'key' => 'high_severity_active_findings',
                'title' => 'High severity active findings',
                'body' => "{$highSeverityCount} high or critical finding(s) are still active.",
                'badge' => 'Findings',
                'badgeColor' => 'danger',
                ...$this->findingsAction(
                    $tenant,
                    'Open findings',
                    [
                        'tab' => 'needs_action',
                        'high_severity' => 1,
                    ],
                ),
            ];
        }

        if ($compareAssessment->stateFamily !== 'positive') {
            $items[] = [
                'key' => 'baseline_compare_posture',
                'title' => 'Baseline compare posture',
                'body' => $compareAssessment->headline,
                'supportingMessage' => $compareAssessment->supportingMessage,
                'badge' => 'Baseline',
                'badgeColor' => $compareAssessment->tone,
                'actionLabel' => 'Open Baseline Compare',
                'actionUrl' => BaselineCompareLanding::getUrl(panel: 'tenant', tenant: $tenant),
            ];
        }

        if ($operationsFollowUpCount > 0) {
            $items[] = [
                'key' => 'operations_follow_up',
                'title' => 'Operations need follow-up',
                'body' => "{$operationsFollowUpCount} run(s) failed, completed with warnings, or look stalled.",
                'badge' => 'Operations',
                'badgeColor' => 'danger',
                'actionLabel' => 'Open operations',
                'actionUrl' => OperationRunLinks::index($tenant, activeTab: 'blocked'),
            ];
        }

        $healthyChecks = [];

        if ($items === []) {
            $healthyChecks = [
                [
                    'title' => 'Baseline compare looks trustworthy',
                    'body' => $aggregate->headline,
                ],
                [
                    'title' => 'No overdue findings',
                    'body' => 'No open findings are currently overdue for this tenant.',
                ],
                [
                    'title' => 'Accepted-risk governance is healthy',
                    'body' => 'No accepted-risk findings currently need governance follow-up.',
                ],
                [
                    'title' => 'No high severity active findings',
                    'body' => 'No high severity findings are currently open for this tenant.',
                ],
                $activeRuns > 0
                    ? [
                        'title' => 'Operations are active',
                        'body' => "{$activeRuns} run(s) are active, but nothing currently needs follow-up.",
                    ]
                    : [
                        'title' => 'No active operations',
                        'body' => 'Nothing is currently running for this tenant.',
                    ],
            ];
        }

        return [
            'pollingInterval' => ActiveRuns::existForTenant($tenant) ? '10s' : null,
            'items' => $items,
            'healthyChecks' => $healthyChecks,
        ];
    }

    /**
     * @param  array<string, mixed>  $parameters
     * @return array<string, mixed>
     */
    private function findingsAction(Tenant $tenant, string $label, array $parameters): array
    {
        $url = $this->canOpenFindings($tenant)
            ? FindingResource::getUrl('index', $parameters, panel: 'tenant', tenant: $tenant)
            : null;

        return [
            'actionLabel' => $label,
            'actionUrl' => $url,
            'actionDisabled' => $url === null,
            'helperText' => $url === null ? UiTooltips::INSUFFICIENT_PERMISSION : null,
        ];
    }

    private function canOpenFindings(Tenant $tenant): bool
    {
        $user = auth()->user();

        return $user instanceof User
            && $user->canAccessTenant($tenant)
            && $user->can(Capabilities::TENANT_FINDINGS_VIEW, $tenant);
    }

    private function governanceAggregate(Tenant $tenant): TenantGovernanceAggregate
    {
        /** @var TenantGovernanceAggregateResolver $resolver */
        $resolver = app(TenantGovernanceAggregateResolver::class);

        /** @var TenantGovernanceAggregate $aggregate */
        $aggregate = $resolver->forTenant($tenant);

        return $aggregate;
    }
}