<?php

namespace Modules\Core\Privacy\RelationManagers;

use Filament\Actions\ViewAction;
use Filament\Actions\Action;
use Filament\Resources\RelationManagers\RelationManager;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Filters\SelectFilter;
use Filament\Tables\Table;
use Modules\Core\Privacy\Enums\ErasureRequestStatus;
use Modules\Core\Privacy\Filament\Resources\DataErasureRequestResource;
use Modules\Core\Privacy\Models\DataErasureRequest;
use Modules\Core\Privacy\Services\PrivacyService;

/**
 * Lists erasure requests where the record being viewed (Customer or User) is the
 * subject — scoped via the Customer::erasureRequests()/{User}::erasureRequests()
 * morphMany macros registered in CorePlugin. Read-mostly, same as
 * DataErasureRequestResource itself — no create here either, requests are opened
 * via PrivacyService (see CustomerErasureActionsExtension for the Customer-page
 * entry point).
 */
class ErasureRequestsRelationManager extends RelationManager
{
    protected static string $relationship = 'erasureRequests';

    protected static ?string $title = 'Erasure Requests';

    public function table(Table $table): Table
    {
        return $table
            ->recordTitleAttribute('id')
            ->columns([
                TextColumn::make('id')
                    ->label('#'),
                TextColumn::make('status')
                    ->badge()
                    ->formatStateUsing(fn (ErasureRequestStatus $state) => ucfirst($state->value))
                    ->color(fn (ErasureRequestStatus $state) => match ($state) {
                        ErasureRequestStatus::Pending => 'warning',
                        ErasureRequestStatus::Cancelled => 'gray',
                        ErasureRequestStatus::Completed => 'success',
                    }),
                TextColumn::make('requestedBy')
                    ->label('Requested by')
                    ->state(fn (DataErasureRequest $record) => DataErasureRequest::displayNameFor($record->requestedBy)),
                TextColumn::make('scheduled_for')
                    ->label('Scheduled for')
                    ->dateTime(),
                TextColumn::make('caused_by_request_id')
                    ->label('Cascade')
                    ->formatStateUsing(fn (?int $state) => $state ? "from #{$state}" : '—'),
                TextColumn::make('created_at')
                    ->label('Requested at')
                    ->dateTime(),
            ])
            ->defaultSort('created_at', 'desc')
            ->filters([
                SelectFilter::make('status')
                    ->options([
                        ErasureRequestStatus::Pending->value => 'Pending',
                        ErasureRequestStatus::Cancelled->value => 'Cancelled',
                        ErasureRequestStatus::Completed->value => 'Completed',
                    ]),
            ])
            ->headerActions([])
            ->recordActions([
                ViewAction::make()
                    ->url(fn (DataErasureRequest $record) => DataErasureRequestResource::getUrl('view', ['record' => $record])),
                Action::make('cancel')
                    ->label('Cancel')
                    ->icon('heroicon-o-x-circle')
                    ->color('danger')
                    ->requiresConfirmation()
                    ->visible(fn (DataErasureRequest $record) => $record->isPending())
                    ->action(fn (DataErasureRequest $record, PrivacyService $privacyService) => $privacyService->cancelErasure($record)),
            ]);
    }
}