<?php

namespace app\common\service;

use app\common\validate\FinPaymentApplyValidate;
use app\common\traits\crud\CrudServiceTrait;
use app\common\model\FinPaymentApply;
use support\Request;

class FinPaymentApplyService
{

    use CrudServiceTrait;

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

    /**
     * 验证器
     */
    protected $validator = FinPaymentApplyValidate::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 = 'index'): array
    {
        $p = $request->all();

        $config = [];
        $config['model'] = $this->modelClass;
        switch ($scene) {
            case 'index':
                // ====== ====== 排序 ====== ======
                $config['order']['id'] = 'desc';
                break;
            case 'show':
                $config['where']['id'] = $p['id'];
                break;
            case 'update':
            case 'destroy':
                $config['where']['id'] = $p['id'];
                break;
            case 'store':
                break;
        }

        return $config;
    }

    public function beforeServiceStore($data, Request $request)
    {
        $data['apply_no'] = $this->generateUniqueApplyNo();
        $data['submit_files'] = json_encode($data['submit_files']);
        return $data;
    }

    public function beforeServiceUpdate($data, Request $request)
    {
        $data['submit_files'] = json_encode($data['submit_files']);
        return $data;
    }


    /**
     * 生成唯一的付款申请编码
     * 格式：PA + 日期 + 6位字母数字组合
     *
     * @return string 唯一编码
     */
    public function generateUniqueApplyNo()
    {
        $chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ';
        $maxAttempts = 10; // 防止无限循环
        $secondChar = 'PA' . date('Ymd');

        for ($attempt = 0; $attempt < $maxAttempts; $attempt++) {
            // 生成后6位随机字符
            $suffix = '';
            for ($i = 0; $i < 6; $i++) {
                $suffix .= $chars[rand(0, strlen($chars) - 1)];
            }

            $applyNo = $secondChar . $suffix;

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

        // 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 $secondChar . $timestamp;
    }
}