<?php

namespace App\Models\Products;

use App\Models\Commons\Category;
use App\Models\Commons\File;
use App\Models\Commons\Tag;
use App\Traits\Auditable;
use App\Traits\BelongsToTenant;
use App\Traits\ModelTrait;
use Illuminate\Database\Eloquent\Model;
use Illuminate\Database\Eloquent\SoftDeletes;

class Product extends Model
{
    use Auditable, BelongsToTenant, ModelTrait, SoftDeletes;

    protected $fillable = [
        'tenant_id', 'code', 'name', 'unit', 'category_id',
        'product_type', // 라벨/분류용
        'attributes', 'attributes_archive', 'options', 'bom', 'description',
        'is_sellable', 'is_purchasable', 'is_producible',
        // 하이브리드 구조: 최소 고정 필드
        'safety_stock', 'lead_time', 'is_variable_size',
        'product_category', 'part_type',
        // 파일 필드
        'bending_diagram', 'bending_details',
        'specification_file', 'specification_file_name',
        'certification_file', 'certification_file_name',
        'certification_number', 'certification_start_date', 'certification_end_date',
        'created_by', 'updated_by', 'is_active',
    ];

    protected $casts = [
        'attributes' => 'array',
        'attributes_archive' => 'array',
        'options' => 'array',
        'bom' => 'array',
        'bending_details' => 'array',
        'certification_start_date' => 'date',
        'certification_end_date' => 'date',
        'is_sellable' => 'boolean',
        'is_purchasable' => 'boolean',
        'is_producible' => 'boolean',
        'is_variable_size' => 'boolean',
        'is_active' => 'boolean',
    ];

    protected $hidden = [
        'deleted_at',
    ];

    // 분류
    public function category()
    {
        return $this->belongsTo(Category::class, 'category_id');
    }

    // BOM (자기참조) — 라인 모델 경유
    public function componentLines()
    {
        return $this->hasMany(ProductComponent::class, 'parent_product_id')->orderBy('sort_order');
    }

    // 라인들
    public function parentLines()
    {
        return $this->hasMany(ProductComponent::class, 'child_product_id');
    }  // 나를 쓰는 상위 라인들

    // 편의: 직접 children/parents 제품에 접근
    public function children()
    {
        return $this->belongsToMany(
            self::class, 'product_components', 'parent_product_id', 'child_product_id'
        )->withPivot(['quantity', 'sort_order', 'is_default'])
            ->withTimestamps();
    }

    public function parents()
    {
        return $this->belongsToMany(
            self::class, 'product_components', 'child_product_id', 'parent_product_id'
        )->withPivot(['quantity', 'sort_order', 'is_default'])
            ->withTimestamps();
    }

    // 파일 / 태그 (폴리모픽)
    public function files()
    {
        return $this->morphMany(File::class, 'fileable');
    }

    public function tags()
    {
        return $this->morphToMany(Tag::class, 'taggable');
    }

    // 스코프
    public function scopeType($q, string $type)
    {
        return $q->where('product_type', $type);
    }

    public function scopeSellable($q)
    {
        return $q->where('is_sellable', 1);
    }

    public function scopePurchasable($q)
    {
        return $q->where('is_purchasable', 1);
    }

    public function scopeProducible($q)
    {
        return $q->where('is_producible', 1);
    }
}