<?php

namespace App\Filament\Tenant\Resources\PurchaseResource\Pages;

use App\Filament\Tenant\Resources\PurchaseResource;
use App\Models\Tenant\Purchase;
use App\Models\Tenant\PurchaseItem;
use App\Models\Tenant\Supplier;
use App\Services\Ai\OcrInvoiceService;
use Filament\Actions;
use Filament\Forms;
use Filament\Notifications\Notification;
use Filament\Resources\Pages\ListRecords;
use Illuminate\Support\Facades\Storage;

class ListPurchases extends ListRecords
{
    protected static string $resource = PurchaseResource::class;

    protected function getHeaderActions(): array
    {
        return [
            Actions\Action::make('ocr')
                ->label('Import factură (OCR)')
                ->icon('heroicon-m-document-arrow-up')
                ->color('gray')
                ->modalHeading('Import factură via OCR')
                ->modalDescription('Încarcă o poză cu factura. AI-ul extrage furnizorul, data și liniile. Verifici și salvezi.')
                ->schema([
                    Forms\Components\FileUpload::make('invoice')
                        ->label('Foto factură')
                        ->image()
                        ->disk('local')
                        ->directory('ocr-imports')
                        ->required()
                        ->maxSize(5120),
                ])
                ->action(function (array $data) {
                    $abs = Storage::disk('local')->path($data['invoice']);
                    $result = app(OcrInvoiceService::class)->extract($abs);

                    if (! ($result['ok'] ?? false)) {
                        Notification::make()
                            ->title('OCR eșuat')
                            ->body($result['error'] ?? 'Eroare necunoscută.')
                            ->danger()->send();
                        @unlink($abs);
                        return;
                    }

                    $payload = $result['data'];

                    // Match supplier by case-insensitive name.
                    $supplierId = null;
                    if ($payload['supplier_name']) {
                        $supplierId = Supplier::whereRaw('LOWER(name) = ?', [mb_strtolower($payload['supplier_name'])])
                            ->value('id');
                    }

                    $purchase = Purchase::create([
                        'number' => Purchase::generateNumber(
                            app(\App\Tenancy\TenantManager::class)->currentId()
                        ),
                        'supplier_id' => $supplierId,
                        'order_date' => $payload['date'] ?? today()->toDateString(),
                        'status' => 'draft',
                        'notes' => 'Importat OCR' . ($payload['supplier_name'] && ! $supplierId
                            ? " · furnizor nemap-uit: „{$payload['supplier_name']}”"
                            : ''),
                    ]);

                    foreach ($payload['items'] as $item) {
                        PurchaseItem::create([
                            'purchase_id' => $purchase->id,
                            'name' => $item['name'],
                            'qty' => $item['qty'],
                            'unit' => 'buc',
                            'buy_price' => $item['unit_price'],
                        ]);
                    }
                    $purchase->refresh()->recalcTotal();

                    @unlink($abs);

                    Notification::make()
                        ->title('Factură importată')
                        ->body(sprintf('%d linii, total %.2f. Verifică și ajustează înainte de a confirma.',
                            count($payload['items']), (float) $purchase->total))
                        ->success()->send();

                    $this->redirect(PurchaseResource::getUrl('edit', ['record' => $purchase]));
                }),
            Actions\CreateAction::make(),
        ];
    }
}