<?php

namespace App\Filament\Tenant\Resources\WorkOrderResource\RelationManagers;

use App\Models\Tenant\Part;
use App\Models\Tenant\PartReservation;
use App\Models\Tenant\WorkOrderPart;
use App\Services\Warehouse\WarehouseService;
use Filament\Actions;
use Filament\Forms;
use Filament\Notifications\Notification;
use Filament\Resources\RelationManagers\RelationManager;
use Filament\Schemas\Components\Utilities\Set;
use Filament\Schemas\Schema;
use Filament\Tables;
use Filament\Tables\Table;

class PartsRelationManager extends RelationManager
{
    protected static string $relationship = 'parts';

    protected static ?string $title = 'Piese';

    public function form(Schema $schema): Schema
    {
        return $schema->components([
            Forms\Components\Select::make('part_id')
                ->label('Din catalog (lasă gol pentru text liber)')
                ->options(fn () => Part::where('is_active', true)
                    ->get()
                    ->mapWithKeys(fn ($p) => [$p->id => "{$p->name} " . ($p->article ? "[{$p->article}] " : '') . "(stoc: {$p->qty})"])
                    ->toArray())
                ->searchable()
                ->live()
                ->afterStateUpdated(function ($state, Set $set) {
                    if ($state && $part = Part::find($state)) {
                        $set('name', $part->name);
                        $set('article', $part->article);
                        $set('brand', $part->brand);
                        $set('unit', $part->unit);
                        $set('buy_price', $part->buy_price);
                        $set('sell_price', $part->sell_price);
                    }
                })
                ->columnSpanFull(),
            Forms\Components\TextInput::make('name')->label('Denumire')->required()->columnSpanFull(),
            Forms\Components\TextInput::make('article')->label('Cod articol')->maxLength(64),
            Forms\Components\TextInput::make('brand')->maxLength(64),
            Forms\Components\TextInput::make('qty')->label('Cantitate')->numeric()->default(1)->required(),
            Forms\Components\TextInput::make('unit')->label('UM')->maxLength(16)->default('buc'),
            Forms\Components\TextInput::make('buy_price')->label('Preț achiziție')->numeric()->default(0),
            Forms\Components\TextInput::make('sell_price')->label('Preț vânzare')->numeric()->required(),
            Forms\Components\TextInput::make('discount_pct')->label('Discount %')->numeric()->default(0),
            Forms\Components\Select::make('status')
                ->options(WorkOrderPart::STATUSES)
                ->default('needed')
                ->required()
                ->helperText('La trecere pe „Montată" se scade automat din stoc.'),
            Forms\Components\Textarea::make('notes')->label('Observații')->columnSpanFull()->rows(2),
        ]);
    }

    public function table(Table $table): Table
    {
        return $table
            ->recordTitleAttribute('name')
            ->columns([
                Tables\Columns\TextColumn::make('name')->label('Piesă')->wrap(),
                Tables\Columns\TextColumn::make('article')->label('Cod')->placeholder('—'),
                Tables\Columns\TextColumn::make('brand')->placeholder('—'),
                Tables\Columns\TextColumn::make('qty')->label('Cant.')->alignRight(),
                Tables\Columns\TextColumn::make('sell_price')->label('Preț')->money('MDL')->alignRight(),
                Tables\Columns\TextColumn::make('total')->money('MDL')->alignRight(),
                Tables\Columns\TextColumn::make('status')
                    ->formatStateUsing(fn ($s) => WorkOrderPart::STATUSES[$s] ?? $s)
                    ->badge()
                    ->colors([
                        'gray' => ['needed'],
                        'warning' => ['ordered'],
                        'info' => ['delivered'],
                        'success' => ['installed'],
                    ]),
            ])
            ->headerActions([
                Actions\CreateAction::make(),
            ])
            ->actions([
                Actions\Action::make('smart_price')
                    ->label('Preț inteligent')
                    ->icon('heroicon-m-sparkles')
                    ->color('primary')
                    ->visible(fn (WorkOrderPart $r) => (bool) $r->part_id)
                    ->modalHeading('Preț contextual')
                    ->modalSubmitActionLabel('Aplică prețul')
                    ->modalContent(function (WorkOrderPart $r) {
                        $wo = $r->workOrder;
                        $part = $r->part;
                        $quote = app(\App\Services\Pricing\PricingEngine::class)->quote(
                            $part, $wo?->vehicle, $wo?->client, $wo?->urgency ?? 'normal'
                        );
                        return view('filament.tenant.smart-price', ['quote' => $quote, 'item' => $r]);
                    })
                    ->action(function (WorkOrderPart $r) {
                        $wo = $r->workOrder;
                        $quote = app(\App\Services\Pricing\PricingEngine::class)->quote(
                            $r->part, $wo?->vehicle, $wo?->client, $wo?->urgency ?? 'normal'
                        );
                        $r->sell_price = $quote['final'];
                        $r->save();
                        Notification::make()
                            ->title('Preț actualizat: ' . number_format($quote['final'], 2) . ' MDL')
                            ->success()->send();
                    }),
                Actions\Action::make('issue_now')
                    ->label('Eliberează')
                    ->icon('heroicon-m-arrow-up-on-square')
                    ->color('warning')
                    ->visible(fn (WorkOrderPart $r) => $r->part_id
                        && PartReservation::where('work_order_part_id', $r->id)
                            ->where('status', PartReservation::STATUS_ACTIVE)
                            ->exists())
                    ->requiresConfirmation()
                    ->modalDescription('Confirmă că mecanicul ia fizic piesa din depozit. Stocul scade acum, fără să aștepți închiderea fișei.')
                    ->action(function (WorkOrderPart $r) {
                        $n = app(WarehouseService::class)->issueNow($r);
                        Notification::make()
                            ->title("Eliberat: {$n} rezervări consumate")
                            ->success()->send();
                    }),
                Actions\Action::make('return_part')
                    ->label('Restituire')
                    ->icon('heroicon-m-arrow-uturn-left')
                    ->color('gray')
                    ->visible(fn (WorkOrderPart $r) => $r->part_id
                        && PartReservation::where('work_order_part_id', $r->id)
                            ->where('status', PartReservation::STATUS_CONSUMED)
                            ->exists())
                    ->schema([
                        Forms\Components\TextInput::make('qty')
                            ->label('Cantitate restituită')
                            ->numeric()
                            ->required()
                            ->minValue(0.001)
                            ->default(fn (WorkOrderPart $r) => (float) $r->qty),
                        Forms\Components\Textarea::make('notes')->rows(2)->label('Observații'),
                    ])
                    ->action(function (WorkOrderPart $r, array $data) {
                        $batch = app(WarehouseService::class)->returnPart(
                            $r, (float) $data['qty'], $data['notes'] ?? null
                        );
                        Notification::make()
                            ->title($batch ? 'Piesa returnată în stoc' : 'Nimic de restituit')
                            ->{$batch ? 'success' : 'warning'}()
                            ->send();
                    }),
                Actions\EditAction::make(),
                Actions\DeleteAction::make(),
            ]);
    }
}
