📄 PrescriptionResource.php

<?php

namespace App\Modules\Pharmacy\Filament\Resources;

use App\Modules\Pharmacy\Filament\Resources\PrescriptionResource\Pages;
use App\Modules\Pharmacy\Models\Prescription;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Resources\Resource;
use Filament\Tables;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Facades\Auth;

class PrescriptionResource extends Resource
{
    protected static ?string $model           = Prescription::class;
    protected static ?string $navigationIcon  = 'heroicon-o-document-check';
    protected static ?string $navigationLabel = 'Prescriptions';
    protected static ?string $navigationGroup = 'Pharmacy';
    protected static ?int    $navigationSort  = 1;
    protected static bool    $shouldSkipAuthorization = true;

    public static function canAccess(): bool
    {
        $user = auth()->user();
        // Allow super_admin, admin, and pharmacist roles
        return $user?->hasAnyRole(['super_admin', 'admin', 'pharmacist']);
    }

    public static function canCreate(): bool   { return false; }   // prescriptions come from frontend only
    public static function canEdit($r): bool   { return true; }
    public static function canDelete($r): bool { return auth()->user()?->hasRole('admin'); }
    public static function canView($r): bool   { return true; }

    // Explicit base query — prevents "::class on null" when Filament's
    // lazy resource closure is resolved before the panel boots fully.
    public static function getEloquentQuery(): Builder
    {
        return Prescription::query()->with(['customer', 'reviewer', 'orders']);
    }

    public static function getNavigationBadge(): ?string
    {
        $count = Prescription::pending()->count();
        return $count > 0 ? (string) $count : null;
    }

    public static function getNavigationBadgeColor(): ?string
    {
        return 'danger';
    }

    public static function form(Form $form): Form
    {
        return $form->schema([
            Forms\Components\Section::make('Prescription Details')->schema([
                Forms\Components\TextInput::make('customer.name')
                    ->label('Customer')
                    ->disabled(),
                Forms\Components\Select::make('status')
                    ->options([
                        'pending'  => 'Pending',
                        'approved' => 'Approved',
                        'rejected' => 'Rejected',
                        'expired'  => 'Expired',
                    ])
                    ->required(),
                Forms\Components\DatePicker::make('valid_until')
                    ->label('Valid Until')
                    ->nullable()
                    ->helperText('Leave blank to auto-set 6 months from today on approval.'),
                Forms\Components\Textarea::make('pharmacist_notes')
                    ->label('Pharmacist Notes')
                    ->rows(3)
                    ->placeholder('Reason for rejection, or any notes for the customer...'),
            ])->columns(2),
        ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            // Clicking a row goes to the View page (no Edit page registered).
            ->recordUrl(fn (Prescription $record): string => static::getUrl('view', ['record' => $record]))
            ->columns([
                Tables\Columns\TextColumn::make('id')
                    ->label('Rx #')
                    ->sortable(),
                Tables\Columns\TextColumn::make('customer.name')
                    ->label('Customer')
                    ->searchable(),
                Tables\Columns\TextColumn::make('customer.email')
                    ->label('Email')
                    ->searchable()
                    ->toggleable(isToggledHiddenByDefault: true),
                Tables\Columns\ImageColumn::make('file_url')
                    ->label('Prescription')
                    ->height(60)
                    ->width(80),
                Tables\Columns\TextColumn::make('file_type')
                    ->label('Type')
                    ->badge()
                    ->color(fn (string $state) => $state === 'pdf' ? 'danger' : 'info'),
                Tables\Columns\TextColumn::make('status')
                    ->badge()
                    ->color(fn (string $state) => match ($state) {
                        'approved' => 'success',
                        'rejected' => 'danger',
                        'expired'  => 'gray',
                        default    => 'warning',
                    }),
                Tables\Columns\TextColumn::make('valid_until')
                    ->label('Valid Until')
                    ->date()
                    ->placeholder('—')
                    ->sortable(),
                Tables\Columns\TextColumn::make('reviewer.name')
                    ->label('Reviewed By')
                    ->placeholder('—'),
                Tables\Columns\TextColumn::make('created_at')
                    ->label('Submitted')
                    ->dateTime()
                    ->sortable(),
            ])
            ->defaultSort('created_at', 'desc')
            ->filters([
                Tables\Filters\SelectFilter::make('status')
                    ->options([
                        'pending'  => 'Pending',
                        'approved' => 'Approved',
                        'rejected' => 'Rejected',
                        'expired'  => 'Expired',
                    ]),
            ])
            ->actions([
                // Quick approve action
                Tables\Actions\Action::make('approve')
                    ->label('Approve')
                    ->icon('heroicon-o-check-circle')
                    ->color('success')
                    ->visible(fn (Prescription $record) => $record->status === 'pending')
                    ->requiresConfirmation()
                    ->form([
                        Forms\Components\Textarea::make('pharmacist_notes')
                            ->label('Notes (optional)')
                            ->rows(2),
                    ])
                    ->action(function (Prescription $record, array $data): void {
                        $record->approve(Auth::user(), $data['pharmacist_notes'] ?? null);
                    }),

                // Quick reject action
                Tables\Actions\Action::make('reject')
                    ->label('Reject')
                    ->icon('heroicon-o-x-circle')
                    ->color('danger')
                    ->visible(fn (Prescription $record) => $record->status === 'pending')
                    ->requiresConfirmation()
                    ->form([
                        Forms\Components\Textarea::make('pharmacist_notes')
                            ->label('Reason for rejection')
                            ->required()
                            ->rows(2),
                    ])
                    ->action(function (Prescription $record, array $data): void {
                        $record->reject(Auth::user(), $data['pharmacist_notes']);
                    }),

                Tables\Actions\ViewAction::make(),
            ])
            ->bulkActions([
                Tables\Actions\BulkActionGroup::make([
                    Tables\Actions\DeleteBulkAction::make(),
                ]),
            ]);
    }

    public static function getPages(): array
    {
        return [
            'index'  => Pages\ListPrescriptions::route('/'),
            'view'   => Pages\ViewPrescription::route('/{record}'),
        ];
    }
}