<?php

namespace App\Models;

use App\Models\Scopes\YearScope;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\Relations\BelongsTo;
use Illuminate\Database\Eloquent\Relations\HasOne;

/**
 * Резерв запчасти под рекламацию.
 *
 * Резерв уменьшает свободный остаток, но НЕ физический.
 * Физический остаток уменьшается только при списании (issue).
 *
 * Жизненный цикл:
 * 1. active - создан при добавлении запчасти в рекламацию
 * 2. issued - запчасть списана (отгружена)
 * 3. cancelled - резерв отменён (запчасть удалена из рекламации)
 */
class Reservation extends Model
{
    const STATUS_ACTIVE = 'active';
    const STATUS_ISSUED = 'issued';
    const STATUS_CANCELLED = 'cancelled';

    const STATUS_NAMES = [
        self::STATUS_ACTIVE => 'Активен',
        self::STATUS_ISSUED => 'Списано',
        self::STATUS_CANCELLED => 'Отменён',
    ];

    protected $fillable = [
        'spare_part_id',
        'spare_part_order_id',
        'reclamation_id',
        'reserved_qty',
        'with_documents',
        'status',
        'movement_id',
    ];

    protected $casts = [
        'reserved_qty' => 'integer',
        'with_documents' => 'boolean',
    ];

    // Отношения
    public function sparePart(): BelongsTo
    {
        return $this->belongsTo(SparePart::class);
    }

    public function sparePartOrder(): BelongsTo
    {
        return $this->belongsTo(SparePartOrder::class)->withoutGlobalScope(YearScope::class);
    }

    public function reclamation(): BelongsTo
    {
        return $this->belongsTo(Reclamation::class);
    }

    public function movement(): BelongsTo
    {
        return $this->belongsTo(InventoryMovement::class, 'movement_id');
    }

    // Аксессоры
    public function getStatusNameAttribute(): string
    {
        return self::STATUS_NAMES[$this->status] ?? $this->status;
    }

    public function isActive(): bool
    {
        return $this->status === self::STATUS_ACTIVE;
    }

    public function isIssued(): bool
    {
        return $this->status === self::STATUS_ISSUED;
    }

    public function isCancelled(): bool
    {
        return $this->status === self::STATUS_CANCELLED;
    }

    // Scopes
    public function scopeActive($query)
    {
        return $query->where('status', self::STATUS_ACTIVE);
    }

    public function scopeForReclamation($query, int $reclamationId)
    {
        return $query->where('reclamation_id', $reclamationId);
    }

    public function scopeForSparePart($query, int $sparePartId)
    {
        return $query->where('spare_part_id', $sparePartId);
    }

    public function scopeWithDocuments($query, bool $withDocs = true)
    {
        return $query->where('with_documents', $withDocs);
    }

    public function scopeFromOrder($query, int $orderId)
    {
        return $query->where('spare_part_order_id', $orderId);
    }
}