<?php

namespace App\Filament\Tenant\Resources;

use App\Filament\Tenant\Resources\PartResource\Pages;
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 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),
                ]),
            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(),
                ]),
            Forms\Components\Textarea::make('notes')->label('Observații')->columnSpanFull()->rows(2),
        ]);
    }

    public static function table(Table $table): Table
    {
        return $table
            ->columns([
                Tables\Columns\TextColumn::make('name')->searchable()->sortable()->wrap(),
                Tables\Columns\TextColumn::make('article')->label('Cod')->searchable()->copyable()->placeholder('—'),
                Tables\Columns\TextColumn::make('brand')->placeholder('—'),
                Tables\Columns\TextColumn::make('category')->badge()->placeholder('—'),
                Tables\Columns\TextColumn::make('qty')
                    ->label('Stoc')
                    ->numeric(decimalPlaces: 2)
                    ->alignRight()
                    ->color(fn ($state, $record) => $record->qty <= 0 ? 'danger' : ($record->qty <= $record->min_qty ? 'warning' : null))
                    ->weight(fn ($state, $record) => $record->qty <= $record->min_qty ? 'bold' : null),
                Tables\Columns\TextColumn::make('unit')->label('UM'),
                Tables\Columns\TextColumn::make('location')->label('Loc.')->placeholder('—'),
                Tables\Columns\TextColumn::make('sell_price')->label('Preț vz.')->money('MDL')->alignRight(),
                Tables\Columns\TextColumn::make('preferredSupplier.name')->label('Furnizor')->placeholder('—')->toggleable(),
            ])
            ->filters([
                Tables\Filters\SelectFilter::make('category')
                    ->options(array_combine(Part::CATEGORIES, Part::CATEGORIES)),
                Tables\Filters\Filter::make('low_stock')
                    ->label('Stoc minim')
                    ->query(fn ($q) => $q->whereColumn('qty', '<=', 'min_qty')),
                Tables\Filters\Filter::make('out_of_stock')
                    ->label('Lipsă')
                    ->query(fn ($q) => $q->where('qty', '<=', 0)),
            ])
            ->actions([
                Actions\EditAction::make(),
                Actions\DeleteAction::make(),
            ])
            ->defaultSort('name');
    }

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