<?php

declare(strict_types=1);

namespace App\Filament\Resources;

use App\Filament\Resources\BaselineProfileResource\Pages;
use App\Models\BaselineProfile;
use App\Models\User;
use App\Models\Workspace;
use App\Services\Audit\WorkspaceAuditLogger;
use App\Support\Audit\AuditActionId;
use App\Support\Auth\Capabilities;
use App\Support\Badges\BadgeDomain;
use App\Support\Badges\BadgeRenderer;
use App\Support\Inventory\InventoryPolicyTypeMeta;
use App\Support\Rbac\WorkspaceUiEnforcement;
use App\Support\Ui\ActionSurface\ActionSurfaceDeclaration;
use App\Support\Ui\ActionSurface\Enums\ActionSurfaceInspectAffordance;
use App\Support\Ui\ActionSurface\Enums\ActionSurfaceProfile;
use App\Support\Ui\ActionSurface\Enums\ActionSurfaceSlot;
use App\Support\Workspaces\WorkspaceContext;
use BackedEnum;
use Filament\Actions\Action;
use Filament\Actions\ActionGroup;
use Filament\Actions\BulkActionGroup;
use Filament\Facades\Filament;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\Textarea;
use Filament\Forms\Components\TextInput;
use Filament\Notifications\Notification;
use Filament\Resources\Resource;
use Filament\Schemas\Schema;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Table;
use Illuminate\Auth\Access\AuthorizationException;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Database\Eloquent\Model;
use UnitEnum;

class BaselineProfileResource extends Resource
{
    protected static bool $isScopedToTenant = false;

    protected static ?string $model = BaselineProfile::class;

    protected static ?string $slug = 'baseline-profiles';

    protected static bool $isGloballySearchable = false;

    protected static ?string $recordTitleAttribute = 'name';

    protected static string|BackedEnum|null $navigationIcon = 'heroicon-o-shield-check';

    protected static string|UnitEnum|null $navigationGroup = 'Governance';

    protected static ?string $navigationLabel = 'Baselines';

    protected static ?int $navigationSort = 1;

    public static function shouldRegisterNavigation(): bool
    {
        if (Filament::getCurrentPanel()?->getId() !== 'admin') {
            return false;
        }

        return parent::shouldRegisterNavigation();
    }

    public static function canViewAny(): bool
    {
        $user = auth()->user();

        if (! $user instanceof User) {
            return false;
        }

        $workspace = self::resolveWorkspace();

        if (! $workspace instanceof Workspace) {
            return false;
        }

        $resolver = app(\App\Services\Auth\WorkspaceCapabilityResolver::class);

        return $resolver->isMember($user, $workspace)
            && $resolver->can($user, $workspace, Capabilities::WORKSPACE_BASELINES_VIEW);
    }

    public static function canCreate(): bool
    {
        return self::hasManageCapability();
    }

    public static function canEdit(Model $record): bool
    {
        return self::hasManageCapability();
    }

    public static function canDelete(Model $record): bool
    {
        return self::hasManageCapability();
    }

    public static function canView(Model $record): bool
    {
        return self::canViewAny();
    }

    public static function actionSurfaceDeclaration(): ActionSurfaceDeclaration
    {
        return ActionSurfaceDeclaration::forResource(ActionSurfaceProfile::CrudListAndView)
            ->satisfy(ActionSurfaceSlot::ListHeader, 'Header action: Create baseline profile (capability-gated).')
            ->satisfy(ActionSurfaceSlot::InspectAffordance, ActionSurfaceInspectAffordance::ViewAction->value)
            ->satisfy(ActionSurfaceSlot::ListRowMoreMenu, 'Secondary row actions (edit, archive) under "More".')
            ->exempt(ActionSurfaceSlot::ListBulkMoreGroup, 'No bulk mutations for baseline profiles in v1.')
            ->satisfy(ActionSurfaceSlot::ListEmptyState, 'List defines empty-state create CTA.')
            ->satisfy(ActionSurfaceSlot::DetailHeader, 'View page provides capture + edit actions.');
    }

    public static function getEloquentQuery(): Builder
    {
        $workspaceId = app(WorkspaceContext::class)->currentWorkspaceId(request());

        return parent::getEloquentQuery()
            ->with(['activeSnapshot', 'createdByUser'])
            ->when(
                $workspaceId !== null,
                fn (Builder $query): Builder => $query->where('workspace_id', (int) $workspaceId),
            )
            ->when(
                $workspaceId === null,
                fn (Builder $query): Builder => $query->whereRaw('1 = 0'),
            );
    }

    public static function form(Schema $schema): Schema
    {
        return $schema
            ->schema([
                TextInput::make('name')
                    ->required()
                    ->maxLength(255),
                Textarea::make('description')
                    ->rows(3)
                    ->maxLength(1000),
                TextInput::make('version_label')
                    ->label('Version label')
                    ->maxLength(50),
                Select::make('status')
                    ->required()
                    ->options([
                        BaselineProfile::STATUS_DRAFT => 'Draft',
                        BaselineProfile::STATUS_ACTIVE => 'Active',
                        BaselineProfile::STATUS_ARCHIVED => 'Archived',
                    ])
                    ->default(BaselineProfile::STATUS_DRAFT)
                    ->native(false),
                Select::make('scope_jsonb.policy_types')
                    ->label('Policy type scope')
                    ->multiple()
                    ->options(self::policyTypeOptions())
                    ->helperText('Leave empty to include all policy types.')
                    ->native(false),
            ]);
    }

    public static function table(Table $table): Table
    {
        $workspace = self::resolveWorkspace();

        return $table
            ->defaultSort('name')
            ->columns([
                TextColumn::make('name')
                    ->searchable()
                    ->sortable(),
                TextColumn::make('status')
                    ->badge()
                    ->formatStateUsing(BadgeRenderer::label(BadgeDomain::BaselineProfileStatus))
                    ->color(BadgeRenderer::color(BadgeDomain::BaselineProfileStatus))
                    ->icon(BadgeRenderer::icon(BadgeDomain::BaselineProfileStatus))
                    ->sortable(),
                TextColumn::make('version_label')
                    ->label('Version')
                    ->placeholder('—'),
                TextColumn::make('activeSnapshot.captured_at')
                    ->label('Last snapshot')
                    ->dateTime()
                    ->placeholder('No snapshot'),
                TextColumn::make('created_at')
                    ->dateTime()
                    ->sortable()
                    ->toggleable(isToggledHiddenByDefault: true),
            ])
            ->actions([
                Action::make('view')
                    ->label('View')
                    ->url(fn (BaselineProfile $record): string => static::getUrl('view', ['record' => $record]))
                    ->icon('heroicon-o-eye'),
                ActionGroup::make([
                    Action::make('edit')
                        ->label('Edit')
                        ->url(fn (BaselineProfile $record): string => static::getUrl('edit', ['record' => $record]))
                        ->icon('heroicon-o-pencil-square')
                        ->visible(fn (): bool => self::hasManageCapability()),
                    self::archiveTableAction($workspace),
                ])->label('More'),
            ])
            ->bulkActions([
                BulkActionGroup::make([])->label('More'),
            ])
            ->emptyStateHeading('No baseline profiles')
            ->emptyStateDescription('Create a baseline profile to define what "good" looks like for your tenants.')
            ->emptyStateActions([
                Action::make('create')
                    ->label('Create baseline profile')
                    ->url(fn (): string => static::getUrl('create'))
                    ->icon('heroicon-o-plus')
                    ->visible(fn (): bool => self::hasManageCapability()),
            ]);
    }

    public static function getRelations(): array
    {
        return [
            BaselineProfileResource\RelationManagers\BaselineTenantAssignmentsRelationManager::class,
        ];
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListBaselineProfiles::route('/'),
            'create' => Pages\CreateBaselineProfile::route('/create'),
            'view' => Pages\ViewBaselineProfile::route('/{record}'),
            'edit' => Pages\EditBaselineProfile::route('/{record}/edit'),
        ];
    }

    /**
     * @return array<string, string>
     */
    public static function policyTypeOptions(): array
    {
        return collect(InventoryPolicyTypeMeta::all())
            ->filter(fn (array $row): bool => filled($row['type'] ?? null))
            ->mapWithKeys(fn (array $row): array => [
                (string) $row['type'] => (string) ($row['label'] ?? $row['type']),
            ])
            ->sort()
            ->all();
    }

    /**
     * @param  array<string, mixed>  $metadata
     */
    public static function audit(BaselineProfile $record, AuditActionId $actionId, array $metadata): void
    {
        $workspace = $record->workspace;

        if ($workspace === null) {
            return;
        }

        $actor = auth()->user();

        app(WorkspaceAuditLogger::class)->log(
            workspace: $workspace,
            action: $actionId->value,
            context: ['metadata' => $metadata],
            actor: $actor instanceof User ? $actor : null,
            resourceType: 'baseline_profile',
            resourceId: (string) $record->getKey(),
        );
    }

    private static function resolveWorkspace(): ?Workspace
    {
        $workspaceId = app(WorkspaceContext::class)->currentWorkspaceId(request());

        if ($workspaceId === null) {
            return null;
        }

        return Workspace::query()->whereKey($workspaceId)->first();
    }

    private static function hasManageCapability(): bool
    {
        $user = auth()->user();
        $workspace = self::resolveWorkspace();

        if (! $user instanceof User || ! $workspace instanceof Workspace) {
            return false;
        }

        $resolver = app(\App\Services\Auth\WorkspaceCapabilityResolver::class);

        return $resolver->isMember($user, $workspace)
            && $resolver->can($user, $workspace, Capabilities::WORKSPACE_BASELINES_MANAGE);
    }

    private static function archiveTableAction(?Workspace $workspace): Action
    {
        $action = Action::make('archive')
            ->label('Archive')
            ->icon('heroicon-o-archive-box')
            ->color('warning')
            ->requiresConfirmation()
            ->modalHeading('Archive baseline profile')
            ->modalDescription('Archiving is permanent in v1. This profile can no longer be used for captures or compares.')
            ->visible(fn (BaselineProfile $record): bool => $record->status !== BaselineProfile::STATUS_ARCHIVED && self::hasManageCapability())
            ->action(function (BaselineProfile $record): void {
                if (! self::hasManageCapability()) {
                    throw new AuthorizationException;
                }

                $record->forceFill(['status' => BaselineProfile::STATUS_ARCHIVED])->save();

                self::audit($record, AuditActionId::BaselineProfileArchived, [
                    'baseline_profile_id' => (int) $record->getKey(),
                    'name' => (string) $record->name,
                ]);

                Notification::make()
                    ->title('Baseline profile archived')
                    ->success()
                    ->send();
            });

        if ($workspace instanceof Workspace) {
            $action = WorkspaceUiEnforcement::forTableAction($action, $workspace)
                ->requireCapability(Capabilities::WORKSPACE_BASELINES_MANAGE)
                ->destructive()
                ->apply();
        }

        return $action;
    }
}