<?php

namespace App\Filament\Resources\TenantResource\Pages;

use App\Filament\Resources\ProviderConnectionResource;
use App\Filament\Resources\TenantResource;
use App\Filament\Widgets\Tenant\RecentOperationsSummary;
use App\Filament\Widgets\Tenant\TenantArchivedBanner;
use App\Filament\Widgets\Tenant\TenantVerificationReport;
use App\Models\Tenant;
use App\Models\User;
use App\Services\Intune\AuditLogger;
use App\Services\Verification\StartVerification;
use App\Support\Auth\Capabilities;
use App\Support\OperationRunLinks;
use App\Support\Rbac\UiEnforcement;
use Filament\Actions;
use Filament\Notifications\Notification;
use Filament\Resources\Pages\ViewRecord;

class ViewTenant extends ViewRecord
{
    protected static string $resource = TenantResource::class;

    protected function getHeaderWidgets(): array
    {
        return [
            TenantArchivedBanner::class,
            RecentOperationsSummary::class,
            TenantVerificationReport::class,
        ];
    }

    protected function getHeaderActions(): array
    {
        return [
            Actions\ActionGroup::make([
                UiEnforcement::forAction(
                    Actions\Action::make('provider_connections')
                        ->label('Provider connections')
                        ->icon('heroicon-o-link')
                        ->url(fn (Tenant $record): string => ProviderConnectionResource::getUrl('index', ['tenant' => $record->external_id], panel: 'admin'))
                )
                    ->requireCapability(Capabilities::PROVIDER_VIEW)
                    ->apply(),
                UiEnforcement::forAction(
                    Actions\Action::make('edit')
                        ->label('Edit')
                        ->icon('heroicon-o-pencil-square')
                        ->url(fn (Tenant $record): string => TenantResource::getUrl('edit', ['record' => $record]))
                )
                    ->requireCapability(Capabilities::TENANT_MANAGE)
                    ->apply(),
                Actions\Action::make('admin_consent')
                    ->label('Admin consent')
                    ->icon('heroicon-o-clipboard-document')
                    ->url(fn (Tenant $record) => TenantResource::adminConsentUrl($record))
                    ->visible(fn (Tenant $record) => TenantResource::adminConsentUrl($record) !== null)
                    ->openUrlInNewTab(),
                Actions\Action::make('open_in_entra')
                    ->label('Open in Entra')
                    ->icon('heroicon-o-arrow-top-right-on-square')
                    ->url(fn (Tenant $record) => TenantResource::entraUrl($record))
                    ->visible(fn (Tenant $record) => TenantResource::entraUrl($record) !== null)
                    ->openUrlInNewTab(),
                UiEnforcement::forAction(
                    Actions\Action::make('verify')
                        ->label('Verify configuration')
                        ->icon('heroicon-o-check-badge')
                        ->color('primary')
                        ->requiresConfirmation()
                        ->visible(fn (Tenant $record): bool => $record->isActive())
                        ->action(function (
                            Tenant $record,
                            StartVerification $verification,
                        ): void {
                            $user = auth()->user();

                            if (! $user instanceof User) {
                                abort(403);
                            }

                            if (! $user->canAccessTenant($record)) {
                                abort(404);
                            }

                            $result = $verification->providerConnectionCheckForTenant(
                                tenant: $record,
                                initiator: $user,
                                extraContext: [
                                    'surface' => [
                                        'kind' => 'tenant_view_header',
                                    ],
                                ],
                            );

                            $runUrl = OperationRunLinks::tenantlessView($result->run);

                            if ($result->status === 'scope_busy') {
                                Notification::make()
                                    ->title('Another operation is already running')
                                    ->body('Please wait for the active run to finish.')
                                    ->warning()
                                    ->actions([
                                        Actions\Action::make('view_run')
                                            ->label('View run')
                                            ->url($runUrl),
                                    ])
                                    ->send();

                                return;
                            }

                            if ($result->status === 'deduped') {
                                Notification::make()
                                    ->title('Verification already running')
                                    ->body('A verification run is already queued or running.')
                                    ->warning()
                                    ->actions([
                                        Actions\Action::make('view_run')
                                            ->label('View run')
                                            ->url($runUrl),
                                    ])
                                    ->send();

                                return;
                            }

                            if ($result->status === 'blocked') {
                                $reasonCode = is_string($result->run->context['reason_code'] ?? null)
                                    ? (string) $result->run->context['reason_code']
                                    : 'unknown_error';

                                $actions = [
                                    Actions\Action::make('view_run')
                                        ->label('View run')
                                        ->url($runUrl),
                                ];

                                $nextSteps = $result->run->context['next_steps'] ?? [];
                                $nextSteps = is_array($nextSteps) ? $nextSteps : [];

                                foreach ($nextSteps as $index => $step) {
                                    if (! is_array($step)) {
                                        continue;
                                    }

                                    $label = is_string($step['label'] ?? null) ? trim((string) $step['label']) : '';
                                    $url = is_string($step['url'] ?? null) ? trim((string) $step['url']) : '';

                                    if ($label === '' || $url === '') {
                                        continue;
                                    }

                                    $actions[] = Actions\Action::make('next_step_'.$index)
                                        ->label($label)
                                        ->url($url);

                                    break;
                                }

                                Notification::make()
                                    ->title('Verification blocked')
                                    ->body("Blocked by provider configuration ({$reasonCode}).")
                                    ->warning()
                                    ->actions($actions)
                                    ->send();

                                return;
                            }

                            Notification::make()
                                ->title('Verification started')
                                ->success()
                                ->actions([
                                    Actions\Action::make('view_run')
                                        ->label('View run')
                                        ->url($runUrl),
                                ])
                                ->send();
                        }),
                )
                    ->preserveVisibility()
                    ->requireCapability(Capabilities::PROVIDER_RUN)
                    ->apply(),
                TenantResource::rbacAction(),
                UiEnforcement::forAction(
                    Actions\Action::make('archive')
                        ->label('Deactivate')
                        ->color('danger')
                        ->icon('heroicon-o-archive-box-x-mark')
                        ->visible(fn (Tenant $record): bool => ! $record->trashed())
                        ->action(function (Tenant $record, AuditLogger $auditLogger): void {
                            $record->delete();

                            $auditLogger->log(
                                tenant: $record,
                                action: 'tenant.archived',
                                resourceType: 'tenant',
                                resourceId: (string) $record->getKey(),
                                status: 'success',
                                context: [
                                    'metadata' => [
                                        'internal_tenant_id' => (int) $record->getKey(),
                                        'tenant_guid' => (string) $record->tenant_id,
                                    ],
                                ]
                            );

                            Notification::make()
                                ->title('Tenant deactivated')
                                ->body('The tenant has been archived and hidden from lists.')
                                ->success()
                                ->send();
                        })
                )
                    ->preserveVisibility()
                    ->requireCapability(Capabilities::TENANT_DELETE)
                    ->destructive()
                    ->apply(),
            ])
                ->label('Actions')
                ->icon('heroicon-o-ellipsis-vertical')
                ->color('gray'),
        ];
    }
}