<?php

namespace app\Model;

use support\Model;

/**
 * 二手车信息模型
 */
class UsedCar extends Model
{
    protected $table = 'used_car';

    protected $fillable = [
        'code',
        'user_id',
        'role',
        'product_name',
        'vin',
        'price',
        'source_place',
        'plate_place',
        'plate_time',
        'displacement',
        'mileage',
        'power',
        'body_color',
        'images',
        'condition_desc',
        'attachment',
        'pdf_src',
        'source_url',
        'crawl_title',
        'crawl_brand',
        'crawl_brand_id',
        'crawl_series',
        'crawl_series_id',
        'crawl_year',
        'crawl_msrp',
        'crawl_car_id',
        'status',
        'sort',
    ];

    protected $casts = [
        'price' => 'integer',
        'mileage' => 'integer',
        'crawl_brand_id' => 'integer',
        'crawl_series_id' => 'integer',
        'crawl_msrp' => 'integer',
        'crawl_car_id' => 'integer',
        'status' => 'integer',
        'sort' => 'integer',
        'attachment' => 'array',
        'created_at' => 'datetime',
        'updated_at' => 'datetime',
    ];

    /**
     * 状态常量
     */
    const STATUS_NORMAL = 1;      // 正常
    const STATUS_ARCHIVED = 2;    // 归档
    const STATUS_DELETED = 3;     // 删除

    /**
     * 关联用户
     */
    public function user()
    {
        return $this->belongsTo(User::class, 'user_id');
    }

    /**
     * 关联PDF生成日志
     */
    public function pdfLogs()
    {
        return $this->hasMany(UsedCarPdfLog::class, 'used_car_id')->orderBy('created_at', 'desc');
    }

    /**
     * 判断是否可以编辑
     */
    public function canEdit(): bool
    {
        return $this->status === self::STATUS_NORMAL;
    }

    /**
     * 判断是否已删除
     */
    public function isDeleted(): bool
    {
        return $this->status === self::STATUS_DELETED;
    }

    /**
     * 判断是否已归档
     */
    public function isArchived(): bool
    {
        return $this->status === self::STATUS_ARCHIVED;
    }

    /**
     * 获取图片URL数组
     */
    public function getImageUrlsAttribute(): array
    {
        if (empty($this->images)) {
            return [];
        }
        return explode(',', $this->images);
    }

    /**
     * 作用域：正常状态
     */
    public function scopeNormal($query)
    {
        return $query->where('status', self::STATUS_NORMAL);
    }

    /**
     * 作用域：按用户筛选
     */
    public function scopeByUser($query, int $userId)
    {
        return $query->where('user_id', $userId);
    }

    /**
     * 作用域：搜索关键词
     */
    public function scopeSearch($query, string $keyword)
    {
        return $query->where(function ($q) use ($keyword) {
            $q->where('product_name', 'like', "%{$keyword}%")
                ->orWhere('code', 'like', "%{$keyword}%");
        });
    }
}