<?php

namespace App\Module\Transfer\Validations;

use App\Module\Transfer\Validators\TransferAppValidator;
use App\Module\Transfer\Validators\BusinessIdValidator;
use App\Module\Transfer\Validators\AmountValidator;
use UCore\Validation\ValidationCore;

/**
 * 转入验证类
 */
class TransferInValidation extends ValidationCore
{
    /**
     * 验证规则
     */
    protected function rules(): array
    {
        return [
            'transfer_app_id' => 'required|integer|min:1',
            'business_id' => 'required|string|max:100',
            'out_user_id' => 'nullable|string|max:50',
            'user_id' => 'required|integer|min:1',
            'amount' => 'required|string',
            'remark' => 'nullable|string|max:255',
            'callback_data' => 'nullable|array',
        ];
    }

    /**
     * 验证消息
     */
    protected function messages(): array
    {
        return [
            'transfer_app_id.required' => '应用ID不能为空',
            'transfer_app_id.integer' => '应用ID必须为整数',
            'transfer_app_id.min' => '应用ID必须大于0',
            'business_id.required' => '业务订单ID不能为空',
            'business_id.string' => '业务订单ID必须为字符串',
            'business_id.max' => '业务订单ID长度不能超过100个字符',
            'out_user_id.string' => '外部用户ID必须为字符串',
            'out_user_id.max' => '外部用户ID长度不能超过50个字符',
            'user_id.required' => '用户ID不能为空',
            'user_id.integer' => '用户ID必须为整数',
            'user_id.min' => '用户ID必须大于0',
            'amount.required' => '金额不能为空',
            'amount.string' => '金额必须为字符串格式',
            'remark.string' => '备注必须为字符串',
            'remark.max' => '备注长度不能超过255个字符',
            'callback_data.array' => '回调数据必须为数组格式',
        ];
    }

    /**
     * 自定义验证
     */
    protected function customValidation(): void
    {
        // 验证应用配置
        $appValidator = new TransferAppValidator($this->data['transfer_app_id'] ?? 0);
        if (!$appValidator->validate()) {
            $this->addError('transfer_app_id', $appValidator->getError());
        }

        // 验证业务ID唯一性
        if (isset($this->data['business_id']) && isset($this->data['transfer_app_id'])) {
            $businessIdValidator = new BusinessIdValidator(
                $this->data['business_id'],
                $this->data['transfer_app_id']
            );
            if (!$businessIdValidator->validate()) {
                $this->addError('business_id', $businessIdValidator->getError());
            }
        }

        // 验证金额格式
        if (isset($this->data['amount'])) {
            $amountValidator = new AmountValidator($this->data['amount']);
            if (!$amountValidator->validate()) {
                $this->addError('amount', $amountValidator->getError());
            }
        }

        // 验证用户是否存在
        if (isset($this->data['user_id'])) {
            $userId = $this->data['user_id'];
            // 这里可以调用用户模块的验证服务
            // if (!UserService::exists($userId)) {
            //     $this->addError('user_id', '用户不存在');
            // }
        }

        // 验证回调数据格式
        if (isset($this->data['callback_data']) && is_array($this->data['callback_data'])) {
            $callbackData = $this->data['callback_data'];
            
            // 检查回调数据大小（限制为1KB）
            $jsonSize = strlen(json_encode($callbackData, JSON_UNESCAPED_UNICODE));
            if ($jsonSize > 1024) {
                $this->addError('callback_data', '回调数据过大，不能超过1KB');
            }

            // 检查是否包含敏感字段
            $forbiddenKeys = ['password', 'token', 'secret', 'key'];
            foreach ($forbiddenKeys as $key) {
                if (array_key_exists($key, $callbackData)) {
                    $this->addError('callback_data', "回调数据不能包含敏感字段: {$key}");
                    break;
                }
            }
        }
    }

    /**
     * 验证转入权限
     */
    protected function validateTransferInPermission(): void
    {
        if (!isset($this->data['transfer_app_id'])) {
            return;
        }

        $appId = $this->data['transfer_app_id'];
        
        // 获取应用配置
        $app = \App\Module\Transfer\Models\TransferApp::find($appId);
        if (!$app) {
            return;
        }

        // 检查应用是否支持转入
        if (!$app->supportsTransferIn()) {
            $this->addError('transfer_app_id', '该应用不支持转入操作');
        }

        // 检查应用是否启用
        if (!$app->is_enabled) {
            $this->addError('transfer_app_id', '应用已禁用');
        }
    }

    /**
     * 执行验证后的处理
     */
    protected function afterValidation(): void
    {
        // 验证转入权限
        $this->validateTransferInPermission();

        // 格式化金额（确保精度）
        if (isset($this->data['amount'])) {
            $this->data['amount'] = number_format((float) $this->data['amount'], 10, '.', '');
        }

        // 清理回调数据
        if (isset($this->data['callback_data']) && is_array($this->data['callback_data'])) {
            // 移除空值
            $this->data['callback_data'] = array_filter($this->data['callback_data'], function ($value) {
                return $value !== null && $value !== '';
            });
        }
    }
}