<?php
namespace App\Filament\Pages\Supporto;

use App\Models\CategoriaTicket;
use App\Models\Ticket;
use App\Models\TicketAttachment;
use App\Models\User;
use App\Support\StabileContext;
use BackedEnum;
use Filament\Forms\Components\FileUpload;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\Textarea;
use Filament\Forms\Components\TextInput;
use Filament\Forms\Concerns\InteractsWithForms;
use Filament\Forms\Contracts\HasForms;
use Filament\Notifications\Notification;
use Filament\Pages\Page;
use Filament\Schemas\Schema;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Storage;
use Livewire\WithFileUploads;
use UnitEnum;

class RichiestaHelp extends Page implements HasForms
{
    use InteractsWithForms;
    use WithFileUploads;

    protected static ?string $navigationLabel = 'Richiedi help';

    protected static ?string $title = 'Richiedi help / segnala bug';

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

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

    protected static ?int $navigationSort = 30;

    protected static ?string $slug = 'supporto/richiesta-help';

    protected string $view = 'filament.pages.supporto.richiesta-help';

    public ?array $data = [];

    public static function canAccess(): bool
    {
        $user = Auth::user();
        return $user instanceof User
        && $user->hasAnyRole(['super-admin', 'admin', 'amministratore', 'collaboratore']);
    }

    public function mount(): void
    {
        $this->getSchema('form')?->fill([
            'priorita' => 'Media',
        ]);
    }

    public function form(Schema $schema): Schema
    {
        return $schema
            ->statePath('data')
            ->components([
                TextInput::make('titolo')
                    ->label('Titolo')
                    ->required()
                    ->maxLength(255),
                Textarea::make('descrizione')
                    ->label('Descrizione')
                    ->required()
                    ->rows(8),
                Select::make('priorita')
                    ->label('Priorità')
                    ->options([
                        'Bassa'   => 'Bassa',
                        'Media'   => 'Media',
                        'Alta'    => 'Alta',
                        'Urgente' => 'Urgente',
                    ])
                    ->required(),
                FileUpload::make('allegati')
                    ->label('Foto / allegati')
                    ->helperText('Da smartphone puoi scattare una foto al momento o selezionarla dalla galleria.')
                    ->disk('public')
                    ->directory('ticket-allegati')
                    ->multiple()
                    ->preserveFilenames()
                    ->acceptedFileTypes([
                        'image/jpeg',
                        'image/png',
                        'image/webp',
                        'image/heic',
                        'image/heif',
                    ])
                    ->maxFiles(8)
                    ->maxSize(12288),
            ]);
    }

    public function submit(): void
    {
        $user = Auth::user();
        if (! $user instanceof User) {
            abort(403);
        }

        $stabileId = StabileContext::resolveActiveStabileId($user);
        if (! $stabileId) {
            Notification::make()
                ->title('Seleziona prima uno stabile')
                ->danger()
                ->send();
            return;
        }

        $state = $this->getSchema('form')?->getState() ?? [];

        $categoria = CategoriaTicket::query()->firstOrCreate(
            ['nome' => 'Supporto'],
            ['descrizione' => 'Richieste help, bug e supporto operativo']
        );

        $ticket = Ticket::create([
            'stabile_id'          => $stabileId,
            'aperto_da_user_id'   => $user->id,
            'categoria_ticket_id' => $categoria->id,
            'titolo'              => (string) ($state['titolo'] ?? ''),
            'descrizione'         => (string) ($state['descrizione'] ?? ''),
            'priorita'            => (string) ($state['priorita'] ?? 'Media'),
            'stato'               => 'Aperto',
        ]);

        $allegati = $state['allegati'] ?? [];
        if (is_array($allegati)) {
            foreach ($allegati as $path) {
                if (! is_string($path) || trim($path) === '') {
                    continue;
                }

                $disk = Storage::disk('public');
                $mime = $disk->exists($path) ? $disk->mimeType($path) : null;
                $size = $disk->exists($path) ? $disk->size($path) : null;

                TicketAttachment::query()->create([
                    'ticket_id'          => $ticket->id,
                    'ticket_update_id'   => null,
                    'user_id'            => $user->id,
                    'file_path'          => $path,
                    'original_file_name' => basename($path),
                    'mime_type'          => is_string($mime) ? $mime : null,
                    'size'               => is_numeric($size) ? (int) $size : null,
                    'description'        => 'Caricato in apertura ticket da Richiedi Help',
                ]);
            }
        }

        $this->getSchema('form')?->fill([
            'titolo'      => null,
            'descrizione' => null,
            'priorita'    => 'Media',
            'allegati'    => [],
        ]);

        Notification::make()
            ->title('Richiesta inviata')
            ->success()
            ->send();
    }
}