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

use App\Models\AreraOperatore;
use App\Models\AreraSettoreAttivita;
use App\Models\User;
use App\Services\Arera\AreraOperatoriImportService;
use BackedEnum;
use Filament\Actions\Action;
use Filament\Forms\Components\FileUpload;
use Filament\Forms\Components\Select;
use Filament\Forms\Components\TextInput;
use Filament\Notifications\Notification;
use Filament\Pages\Page;
use Filament\Tables\Columns\TextColumn;
use Filament\Tables\Concerns\InteractsWithTable;
use Filament\Tables\Contracts\HasTable;
use Filament\Tables\Filters\SelectFilter;
use Filament\Tables\Table;
use Illuminate\Database\Eloquent\Builder;
use Illuminate\Support\Facades\Auth;
use Illuminate\Support\Facades\Schema;
use Illuminate\Support\Facades\Storage;
use UnitEnum;

class OperatoriArera extends Page implements HasTable
{
    use InteractsWithTable;

    protected static ?string $navigationLabel = 'Operatori ARERA';

    protected static ?string $title = 'Operatori ARERA';

    protected static BackedEnum|string|null $navigationIcon = 'heroicon-o-building-office-2';

    protected static UnitEnum|string|null $navigationGroup = 'Super Admin';

    protected static ?int $navigationSort = 26;

    protected static ?string $slug = 'superadmin/operatori-arera';

    protected string $view = 'filament.pages.gescon.table';

    public static function canAccess(): bool
    {
        $user = Auth::user();

        return $user instanceof User
        && $user->hasRole('super-admin')
        && Schema::hasTable('arera_operatori');
    }

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

    protected function getTableQuery(): Builder
    {
        return AreraOperatore::query()->with(['naturaGiuridica', 'settori']);
    }

    public function table(Table $table): Table
    {
        return $table
            ->striped()
            ->defaultSort('societa')
            ->columns([
                TextColumn::make('societa')
                    ->label('Società')
                    ->formatStateUsing(fn($state, AreraOperatore $record): string => trim((string) $state) !== '' ? trim((string) $state) : ('P.IVA ' . (string) ($record->partita_iva ?: $record->partita_iva_normalizzata)))
                    ->searchable()
                    ->sortable()
                    ->wrap(),
                TextColumn::make('partita_iva')->label('P.IVA')->searchable()->sortable(),
                TextColumn::make('naturaGiuridica.nome')->label('Natura')->toggleable()->sortable(),
                TextColumn::make('settori.nome')->label('Settori')->badge()->separator(',')->searchable(),
                TextColumn::make('sito_internet')->label('Sito')->url(fn(AreraOperatore $record): ?string => $record->sito_internet)->openUrlInNewTab()->toggleable(),
                TextColumn::make('sede_legale_citta')->label('Città')->searchable()->toggleable(),
                TextColumn::make('sede_legale_provincia')->label('Prov.')->searchable()->toggleable(),
                TextColumn::make('updated_at')->label('Aggiornato')->dateTime('d/m/Y H:i')->toggleable(isToggledHiddenByDefault: true),
            ])
            ->filters([
                SelectFilter::make('settore')
                    ->label('Settore')
                    ->options(fn(): array=> AreraSettoreAttivita::query()->orderBy('nome')->pluck('nome', 'id')->all())
                    ->query(function (Builder $query, array $data): Builder {
                        $value = (int) ($data['value'] ?? 0);
                        if ($value <= 0) {
                            return $query;
                        }

                        return $query->whereHas('settori', fn(Builder $q): Builder => $q->whereKey($value));
                    }),
            ])
            ->headerActions([
                Action::make('scarica_zip_arera')
                    ->label('Scarica ZIP ARERA')
                    ->icon('heroicon-o-cloud-arrow-down')
                    ->modalWidth('4xl')
                    ->form([
                        Select::make('preset_url')
                            ->label('Fonte rapida')
                            ->options([
                                'https://www.arera.it/fileadmin/ricercaoperatori/operatori-export-29_06_2026_09_00_10.zip'   => 'Operatori - export completo (29/06/2026)',
                                'https://www.arera.it/fileadmin/ricercaoperatori/export-mercato-vend29_06_2026_09_35_02.zip' => 'Mercato vendita (29/06/2026)',
                                'https://www.arera.it/fileadmin/ricercaoperatori/export-gas-vend29_06_2026_09_30_02.zip'     => 'Gas vendita (29/06/2026)',
                            ])
                            ->native(false)
                            ->helperText('I nomi file ARERA cambiano nel tempo: se il preset non e aggiornato, incolla sotto il nuovo URL ZIP.')
                            ->reactive(),
                        TextInput::make('custom_url')
                            ->label('URL ZIP ARERA')
                            ->placeholder('https://www.arera.it/fileadmin/ricercaoperatori/operatori-export-...zip')
                            ->url()
                            ->maxLength(1000),
                    ])
                    ->action(function (array $data): void {
                        $url = trim((string) ($data['custom_url'] ?? ''));
                        if ($url === '') {
                            $url = trim((string) ($data['preset_url'] ?? ''));
                        }

                        if ($url === '') {
                            Notification::make()->title('Indica un URL ZIP ARERA')->danger()->send();
                            return;
                        }

                        try {
                            $result = app(AreraOperatoriImportService::class)->importZipFromUrl($url);
                            $body   = 'File Excel: ' . $result['files']
                                . ' · Righe: ' . $result['rows']
                                . ' · Nuovi: ' . $result['imported']
                                . ' · Aggiornati: ' . $result['updated']
                                . ' · Saltati: ' . $result['skipped']
                                . ' · Settori: ' . $result['sectors'];

                            if (! empty($result['errors'])) {
                                $body .= "\n" . implode("\n", $result['errors']);
                            }

                            Notification::make()->title('Download/import ARERA completato')->body($body)->success()->send();
                        } catch (\Throwable $e) {
                            report($e);
                            Notification::make()->title('Errore download ARERA')->body($e->getMessage())->danger()->send();
                        }
                    }),

                Action::make('importa_excel')
                    ->label('Importa Excel ARERA')
                    ->icon('heroicon-o-arrow-up-tray')
                    ->modalWidth('3xl')
                    ->form([
                        FileUpload::make('xlsx_file')
                            ->label('File operatori-export.xlsx')
                            ->disk('local')
                            ->directory('tmp/arera-operatori')
                            ->acceptedFileTypes([
                                'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
                                'application/vnd.ms-excel',
                                '.xlsx',
                                '.xls',
                            ])
                            ->required(),
                    ])
                    ->action(function (array $data): void {
                        $path = (string) ($data['xlsx_file'] ?? '');
                        if ($path === '') {
                            Notification::make()->title('Seleziona un file Excel')->danger()->send();
                            return;
                        }

                        try {
                            $result = app(AreraOperatoriImportService::class)->importXlsx(
                                Storage::disk('local')->path($path),
                                basename($path),
                            );

                            $body = 'Righe: ' . $result['rows']
                                . ' · Nuovi: ' . $result['imported']
                                . ' · Aggiornati: ' . $result['updated']
                                . ' · Saltati: ' . $result['skipped']
                                . ' · Settori: ' . $result['sectors'];

                            if (! empty($result['errors'])) {
                                $body .= "\n" . implode("\n", $result['errors']);
                            }

                            Notification::make()->title('Import ARERA completato')->body($body)->success()->send();
                        } catch (\Throwable $e) {
                            report($e);
                            Notification::make()->title('Errore import ARERA')->body($e->getMessage())->danger()->send();
                        }
                    }),
            ]);
    }
}