<?php

declare (strict_types = 1);

namespace addon\download\model;

use ywxapp\model\BaseModel;

class Resource extends BaseModel
{
    protected $defaultSoftDelete = 0;
    protected $deleteTime        = 'delete_at';

    protected function getOptions(): array
    {
        return [
            'strict'      => false,
            'name'        => 'download_resource',
            'autoRelation' => [],
            'createTime'  => 'create_at',
            'updateTime'  => 'update_at',
            'dateFormat'  => 'Y-m-d H:i:s',
        ];
    }

    /**
     * 所属分类
     */
    public function category()
    {
        return $this->belongsTo(Category::class, 'cid', 'id');
    }

    /**
     * 文件大小友好显示（字节 -> KB/MB/GB）
     */
    public function getSizeTextAttr($value, $data)
    {
        $size = (int)($data['file_size'] ?? 0);
        if ($size <= 0) {
            return '-';
        }
        $units = ['B', 'KB', 'MB', 'GB', 'TB'];
        $i = 0;
        while ($size >= 1024 && $i < count($units) - 1) {
            $size /= 1024;
            $i++;
        }
        return round($size, 2) . ' ' . $units[$i];
    }

    /**
     * 列表查询作用域：仅正常且已审
     */
    public function scopeVisible($query)
    {
        return $query->where('status', 1)->where('is_audit', 1);
    }

    /**
     * 分类名称（依赖预载入的 category 关联）
     */
    public function getCategoryTitleAttr($value, $data)
    {
        if (isset($this->category) && $this->category) {
            return $this->category->title;
        }
        $cid = (int)($data['cid'] ?? 0);
        if ($cid > 0) {
            return (new Category())->where('id', $cid)->value('title') ?: '-';
        }
        return '-';
    }
}