<?php

namespace App\Filament\Tenant\Resources;

use App\Filament\Tenant\Resources\PartResource\Pages;
use App\Filament\Tenant\Resources\PartResource\RelationManagers;
use App\Models\Tenant\Part;
use App\Models\Tenant\Supplier;
use Filament\Actions;
use Filament\Forms;
use Filament\Resources\Resource;
use Filament\Schemas;
use Filament\Schemas\Schema;
use Filament\Tables;
use Filament\Tables\Table;

class PartResource extends Resource
{
    protected static ?string $model = Part::class;

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

    protected static ?string $navigationLabel = 'Depozit';

    protected static string|\UnitEnum|null $navigationGroup = 'Depozit';

    protected static ?string $modelLabel = 'piesă';

    protected static ?string $pluralModelLabel = 'piese';

    protected static ?int $navigationSort = 40;

    public static function getGloballySearchableAttributes(): array
    {
        return ['name', 'article', 'brand', 'category', 'barcode'];
    }

    public static function getGlobalSearchResultDetails(\Illuminate\Database\Eloquent\Model $record): array
    {
        return [
            'Stoc' => (int) $record->stock . ' ' . ($record->unit ?? 'buc'),
            'Preț' => number_format((float) $record->sell_price, 2),
        ];
    }

    public static function getNavigationBadge(): ?string
    {
        $low = static::getModel()::query()
            ->where('is_active', true)
            ->whereColumn('qty', '<=', 'min_qty')
            ->count();
        return $low > 0 ? (string) $low : null;
    }

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

    public static function form(Schema $schema): Schema
    {
        return $schema->components([
            Schemas\Components\Section::make('Identificare')
                ->columns(3)
                ->schema([
                    Forms\Components\TextInput::make('name')->label('Denumire')->required()->columnSpan(3)->maxLength(200),
                    Forms\Components\TextInput::make('article')->label('Cod articol')->maxLength(64),
                    Forms\Components\TextInput::make('brand')->maxLength(64),
                    Forms\Components\Select::make('category')
                        ->label('Categorie')
                        ->options(array_combine(Part::CATEGORIES, Part::CATEGORIES))
                        ->searchable(),
                    Forms\Components\TextInput::make('barcode')->label('Cod bare')->maxLength(64),
                    Forms\Components\TextInput::make('location')->label('Locație rack/bin')->maxLength(64),
                ]),
            Schemas\Components\Section::make('Stoc')
                ->columns(4)
                ->schema([
                    Forms\Components\TextInput::make('qty')->label('Cantitate')->numeric()->default(0)->required(),
                    Forms\Components\TextInput::make('unit')->label('UM')->default('buc')->maxLength(16),
                    Forms\Components\TextInput::make('min_qty')->label('Minim')->numeric()->default(0),
                    Forms\Components\Toggle::make('is_active')->label('Activ')->default(true),
                    Forms\Components\Toggle::make('is_published')
                        ->label('Publicat în magazin')
                        ->helperText('Apare în magazinul online public.')
                        ->default(false),
                ]),
            Schemas\Components\Section::make('Prețuri')
                ->columns(2)
                ->schema([
                    Forms\Components\TextInput::make('buy_price')->label('Preț achiziție')->numeric()->default(0),
                    Forms\Components\TextInput::make('sell_price')->label('Preț vânzare')->numeric()->default(0),
                ]),
            Schemas\Components\Section::make('Furnizor preferat')
                ->columns(1)
                ->schema([
                    Forms\Components\Select::make('preferred_supplier_id')
                        ->label('Furnizor')
                        ->options(fn () => Supplier::pluck('name', 'id'))
                        ->searchable(),
                ]),
            Schemas\Components\Section::make('Imagine')
                ->collapsible()
                ->schema([
                    \Filament\Forms\Components\SpatieMediaLibraryFileUpload::make('image')
                        ->label('Foto piesă')
                        ->collection('image')
                        ->image()
                        ->imageEditor()
                        ->maxSize(2048)
                        ->columnSpanFull()
                        ->helperText('Apare în magazinul online (catalog + pagina piesei). Max 2 MB.'),
                ]),
            Forms\Components\Textarea::make('notes')->label('Observații')->columnSpanFull()->rows(2),
        ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                \Filament\Tables\Columns\SpatieMediaLibraryImageColumn::make('image')
                    ->label('')
                    ->collection('image')
                    ->circular()
                    ->size(32),
                Tables\Columns\TextColumn::make('name')->searchable()->sortable()->wrap(),
                Tables\Columns\TextColumn::make('article')->label('Cod')->searchable()->copyable()->placeholder('—'),
                Tables\Columns\TextColumn::make('brand')->placeholder('—'),
                Tables\Columns\TextColumn::make('category')->badge()->placeholder('—'),
                Tables\Columns\TextColumn::make('qty')
                    ->label('Stoc')
                    ->numeric(decimalPlaces: 2)
                    ->alignRight()
                    ->color(fn ($state, $record) => $record->qty <= 0 ? 'danger' : ($record->qty <= $record->min_qty ? 'warning' : null))
                    ->weight(fn ($state, $record) => $record->qty <= $record->min_qty ? 'bold' : null),
                Tables\Columns\TextColumn::make('qty_reserved')
                    ->label('Rezervat')
                    ->numeric(decimalPlaces: 2)
                    ->alignRight()
                    ->color(fn ($state) => (float) $state > 0 ? 'info' : null)
                    ->toggleable(),
                Tables\Columns\TextColumn::make('unit')->label('UM'),
                Tables\Columns\TextColumn::make('location')->label('Loc.')->placeholder('—'),
                Tables\Columns\TextColumn::make('sell_price')->label('Preț vz.')->money('MDL')->alignRight(),
                Tables\Columns\IconColumn::make('is_published')->label('Magazin')->boolean()->toggleable(),
                Tables\Columns\TextColumn::make('preferredSupplier.name')->label('Furnizor')->placeholder('—')->toggleable(),
            ])
            ->filters([
                Tables\Filters\SelectFilter::make('category')
                    ->options(array_combine(Part::CATEGORIES, Part::CATEGORIES)),
                Tables\Filters\Filter::make('low_stock')
                    ->label('Stoc minim')
                    ->query(fn ($q) => $q->whereColumn('qty', '<=', 'min_qty')),
                Tables\Filters\Filter::make('out_of_stock')
                    ->label('Lipsă')
                    ->query(fn ($q) => $q->where('qty', '<=', 0)),
            ])
            ->actions([
                Actions\Action::make('qr')
                    ->label('QR')
                    ->icon('heroicon-m-qr-code')
                    ->color('gray')
                    ->modalHeading(fn (Part $r) => 'QR pentru ' . $r->name)
                    ->modalSubmitAction(false)
                    ->modalCancelActionLabel('Închide')
                    ->modalContent(function (Part $r) {
                        $payload = 'PART:' . ($r->article ?: $r->id);
                        $svg = (new \chillerlan\QRCode\QRCode(new \chillerlan\QRCode\QROptions([
                            'outputType' => \chillerlan\QRCode\QRCode::OUTPUT_MARKUP_SVG,
                            'eccLevel' => \chillerlan\QRCode\QRCode::ECC_M,
                            'scale' => 8,
                            'imageBase64' => false,
                            'addQuietzone' => true,
                        ])))->render($payload);
                        return view('filament.tenant.part-qr', [
                            'part' => $r, 'svg' => $svg, 'payload' => $payload,
                        ]);
                    }),
                Actions\Action::make('ai_price')
                    ->label('AI: preț recomandat')
                    ->icon('heroicon-m-sparkles')
                    ->color('primary')
                    ->modalHeading(fn (Part $r) => "AI: preț pentru {$r->name}")
                    ->modalSubmitAction(false)
                    ->modalCancelActionLabel('Închide')
                    ->modalContent(function (Part $r) {
                        [$reply, $meta] = app(\App\Services\Ai\AiAssistantService::class)
                            ->suggestPrice($r);
                        return view('filament.tenant.ai-reply', ['reply' => $reply, 'meta' => $meta]);
                    }),
                Actions\Action::make('receive')
                    ->label('Recepție')
                    ->icon('heroicon-m-arrow-down-tray')
                    ->color('success')
                    ->schema([
                        Forms\Components\TextInput::make('qty')->label('Cantitate')->numeric()->required()->minValue(0.001),
                        Forms\Components\TextInput::make('buy_price')->label('Preț unitar')->numeric()->required(),
                        Forms\Components\Select::make('supplier_id')
                            ->label('Furnizor')
                            ->options(fn () => \App\Models\Tenant\Supplier::pluck('name', 'id')),
                        Forms\Components\Select::make('warehouse_id')
                            ->label('Depozit')
                            ->options(fn () => \App\Models\Tenant\Warehouse::where('is_active', true)->pluck('name', 'id'))
                            ->default(fn () => \App\Models\Tenant\Warehouse::where('is_default', true)->value('id')),
                        Forms\Components\TextInput::make('batch_ref')->label('Ref. lot/factură')->maxLength(64),
                    ])
                    ->action(function (Part $record, array $data) {
                        $warehouse = $data['warehouse_id']
                            ? \App\Models\Tenant\Warehouse::find($data['warehouse_id'])
                            : null;
                        $supplier = $data['supplier_id']
                            ? \App\Models\Tenant\Supplier::find($data['supplier_id'])
                            : null;
                        app(\App\Services\Warehouse\WarehouseService::class)->receive(
                            part: $record,
                            qty: (float) $data['qty'],
                            buyPrice: (float) $data['buy_price'],
                            warehouse: $warehouse,
                            supplier: $supplier,
                            batchRef: $data['batch_ref'] ?? null,
                        );
                        \Filament\Notifications\Notification::make()
                            ->title('Stoc adăugat')
                            ->success()
                            ->send();
                    }),
                Actions\EditAction::make(),
                Actions\DeleteAction::make(),
            ])
            ->bulkActions([
                Actions\BulkAction::make('print_labels')
                    ->label('Tipărește etichete QR')
                    ->icon('heroicon-m-printer')
                    ->color('gray')
                    ->action(function ($records) {
                        $ids = collect($records)->pluck('id')->implode(',');
                        return redirect()->away('/parts/labels?ids=' . $ids);
                    })
                    ->deselectRecordsAfterCompletion(),
                Actions\BulkAction::make('publish')
                    ->label('Publică în magazin')
                    ->icon('heroicon-m-globe-alt')
                    ->color('success')
                    ->action(fn ($records) => collect($records)->each->update(['is_published' => true]))
                    ->deselectRecordsAfterCompletion(),
                Actions\BulkAction::make('unpublish')
                    ->label('Scoate din magazin')
                    ->icon('heroicon-m-eye-slash')
                    ->color('gray')
                    ->action(fn ($records) => collect($records)->each->update(['is_published' => false]))
                    ->deselectRecordsAfterCompletion(),
            ])
            ->emptyStateHeading('Depozit gol')
            ->emptyStateDescription('Adaugă piese manual, sau folosește Achiziții ca să le adaugi prin recepție de la furnizor (cu prețuri și stoc auto). Procentaj poate seta automat prețul de vânzare.')
            ->emptyStateIcon('heroicon-o-cube')
            ->defaultSort('name');
    }

    public static function getRelations(): array
    {
        return [
            RelationManagers\BatchesRelationManager::class,
            RelationManagers\PriceHistoryRelationManager::class,
            RelationManagers\CrossRefsRelationManager::class,
        ];
    }

    public static function getPages(): array
    {
        return [
            'index' => Pages\ListParts::route('/'),
            'create' => Pages\CreatePart::route('/create'),
            'edit' => Pages\EditPart::route('/{record}/edit'),
        ];
    }
}