<?php
namespace App\Filament\Pages;

use Filament\Pages\Page;
use Filament\Forms;
use Filament\Forms\Form;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Forms\Contracts\HasForms;
use Filament\Notifications\Notification;
use Livewire\Features\SupportFileUploads\TemporaryUploadedFile;
use Storage;
use Illuminate\Support\Facades\Auth;

class UploadDailyReport extends Page implements HasForms
{
    use InteractsWithForms;

    protected static ?string $navigationIcon = 'heroicon-o-document-arrow-up';
    protected static string $view = 'filament.pages.upload-daily-report';

    protected static ?string $navigationGroup = 'Task Upload';

    public ?array $data = [];

    public array $filters = [];

    public function mount(): void
    {
        $this->form->fill();
    }

    public function form(Form $form): Form
    {
        return $form->schema([
            Forms\Components\Section::make('Upload Daily Task Report')
                ->schema([
            Forms\Components\TextInput::make('file_name')
                ->label('File Name')
                ->reactive(),
            Forms\Components\FileUpload::make('report_pdf')
                ->label('Daily Report PDF')
                ->disk('local')
                ->directory('task_updates')
                ->acceptedFileTypes(['application/pdf'])
                ->required()
                ->maxSize(10240)
                ->preserveFilenames(),
            ])
            ->columns(2),
        ])->statePath('filters');
    }

    public function uploadTaskPdf(): void
    {
        $state = $this->form->getState(); // triggers upload/validation
        $currentFile = $state['report_pdf'];
        $directory = 'task_updates';
        $filename = trim(basename($currentFile));

        $path = 'task_updates/' . $filename;

        $expectedEmployees = [
            'Dhanabalan Saravanan',
            'Ranjith',
            'Srimathi Ramamoorthy',
        ];

        $filename = pathinfo(basename($currentFile), PATHINFO_FILENAME);

        $isValid = collect($expectedEmployees)->contains(
            fn ($name) => strcasecmp(trim($filename), $name) == 0
        );

        if (! $isValid) {
            Notification::make()
                ->title('Invalid PDF filename')
                ->body(
                    'Please upload a PDF with one of these names: '
                    . implode(', ', array_map(
                        fn ($name) => $name . '.pdf',
                        $expectedEmployees
                    ))
                )
                ->danger()
                ->send();

            $this->form->fill(['report_pdf' => null]);

            return;
        }
        else{
            Notification::make()
                ->title('PDF uploaded successfully')
                ->success()
                ->send();

            $this->form->fill(['report_pdf' => null]);
        }

    }


    public function removeTaskPdf(){
        $fileName = $this->filters['file_name'] ?? null;

        if (!$fileName) {
            Notification::make()
                ->title('File Name Required')
                ->body('Please enter a file name before removing the PDF.')
                ->danger()
                ->send();

            return;
        }

        $filePath = "task_updates/{$fileName}.pdf";

        if (!Storage::disk('local')->exists($filePath)) {
            Notification::make()
                ->title('PDF Not Found')
                ->body('The selected PDF does not exist.')
                ->danger()
                ->send();
            $this->form->fill(['file_name' => null]);
            return;
        }

        if (Storage::disk('local')->exists($filePath)) {
            if (Storage::disk('local')->delete($filePath)) {
                Notification::make()
                    ->title('PDF Removed Successfully')
                    ->body('The PDF was removed successfully.')
                    ->success()
                    ->send();
                return;
            }
            else{
                Notification::make()
                    ->title('PDF Removed Failed')
                    ->body('Unable to remove the PDF. Please try again...')
                    ->success()
                    ->send();
                return;
            }
        }
    }

    public function downloadTaskPdf(){
        $fileName = $this->filters['file_name'] ?? null;

        if (!$fileName) {
            Notification::make()
                ->title('File Name Required')
                ->body('Please enter a file name before removing the PDF.')
                ->danger()
                ->send();

            return;
        }

        $filePath = "task_updates/{$fileName}.pdf";

        if (!Storage::disk('local')->exists($filePath)) {
            Notification::make()
                ->title('PDF Not Found')
                ->body('The selected PDF does not exist.')
                ->danger()
                ->send();
            $this->form->fill(['file_name' => null]);
            return;
        }

        if (Storage::disk('local')->exists($filePath)) {
            if($filePath){
                $fullPath = Storage::disk('local')->path($filePath);

                 Notification::make()
                    ->title('PDF Downloaded Successfully')
                    ->body('The PDF was downloaded successfully.')
                    ->success()
                    ->send();

                return response()->download($fullPath, "{$fileName}.pdf");

            }
            else{
                Notification::make()
                    ->title('PDF downloaded Failed')
                    ->body('Unable to download the PDF. Please try again...')
                    ->success()
                    ->send();
                return;
            }
        }
    }

    public static function canAccess(): bool
    {
        return Auth::check() && Auth::user()->can('view upload daily report page');
    }

}