<?php

namespace app\admin\service;

use app\admin\validate\BrandSeriesValidate;
use app\common\model\Brand;
use app\common\traits\crud\CrudServiceTrait;
use app\common\model\BrandSeries;
use support\Request;

class BrandSeriesService
{

    use CrudServiceTrait;

    /**
     * 指定当前要操作的模型
     */
    protected string $modelClass = BrandSeries::class;

    /**
     * 验证器
     */
    protected $validator = BrandSeriesValidate::class;

    /**
     * 获取验证器
     */
    public function getValidator()
    {
        return  new $this->validator;
    }

    /**
     * 构建查询条件
     */

    protected function buildQueryConfig(Request $request, string $scene = 'default'): array
    {
        $p = $request->all();

        $config = [];
        $config['model'] = $this->modelClass;
        switch ($scene) {
            case 'index':
                // ====== ====== 排序 ====== ======
                $config['order']['sort'] = 'desc';
                $config['order']['id'] = 'desc';

                // ====== ====== 筛选 ====== ======
                $config['where']['brand_id'] = $p['brand_id'];
                // 状态
                if (isset($p['status']) && in_array($p['status'], [0,1])) {
                    $config['where']['status'] = $p['status'];
                }
                // 关键字
                if (isset($p['keyword']) && $p['keyword']) {
                    $k = '%' . $p['keyword'] . '%';
                    foreach (['series_code','series_name'] as $col) {
                        $config['orWhere'][] = [$col, 'like', $k];
                    }
                }
                //$config['where']['status'] = 1;
                break;
            case 'show':
                $config['where']['id'] = $p['id'];
                //$config['where']['status'] = 1;
                break;
            case 'store':
                break;
            case 'update':
                $config['where']['id'] = $p['id'];
                break;
            case 'destroy':
                $config['where']['id'] = $p['id'];
                break;
        }

        return $config;
    }

    /**
     * 生成唯一的7位颜色编码
     * 格式：C + (O/I) + 5位字母数字组合
     *
     * @param int $type 类型
     * @return string 7位唯一编码
     */
    public function generateUniqueModificationCode($brand_id)
    {
        $chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $maxAttempts = 10; // 防止无限循环

        $brand_code = Brand::where('id', $brand_id)->value('brand_code');
        $brand_code = $brand_code??'BS';
        for ($attempt = 0; $attempt < $maxAttempts; $attempt++) {
            // 生成后5位随机字符
            $suffix = '';
            for ($i = 0; $i < 6; $i++) {
                $suffix .= $chars[rand(0, strlen($chars) - 1)];
            }

            $code = $brand_code . $suffix;

            // 检查是否已存在
            $existing = BrandSeries::where('series_code', $code)->first();
            if (!$existing) {
                return $code;
            }
        }

        // 如果1000次尝试后仍然重复，使用时间戳确保唯一性
        $timestamp = substr(time(), -6);
        return $brand_code . $timestamp;
    }

    /**
     * 添加前置处理
     */
    public function beforeServiceStore($data, Request $request)
    {
        $brand_id = $data['brand_id'] ?? 0;
        $data['series_code'] = $this->generateUniqueModificationCode($brand_id);
        return $data;
    }
}