2026-01-20 01:13:56 +08:00
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import React, { useState, useRef, useEffect, useCallback } from 'react';
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import { Shield, X, Check } from 'lucide-react';
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import axios from 'axios';
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import { API_BASE_URL } from '@/lib/api';
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/**
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* 滑块验证码组件属性接口定义
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* @interface SliderCaptchaProps
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* @property {function} onVerify - 验证结果回调函数,参数为验证是否成功
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* @property {function} onClose - 关闭验证码组件的回调函数
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*/
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interface SliderCaptchaProps {
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onVerify: (success: boolean) => void;
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onClose: () => void;
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}
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// 轨道宽度(与背景图宽度一致)
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const TRACK_WIDTH = 300;
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// 滑块按钮宽度
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const SLIDER_WIDTH = 50;
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// 背景图宽度(与后端返回的背景图尺寸匹配)
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// const CANVAS_WIDTH = 300;
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/**
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* 滑块验证码组件
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* 功能:通过拖拽滑块完成拼图验证,与后端交互获取验证码资源和验证结果
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* 特点:
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* - 支持鼠标和触摸事件,适配PC和移动端
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* - 与后端接口交互,获取背景图、拼图和验证结果
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* - 包含验证状态反馈和错误处理
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* @param {SliderCaptchaProps} props - 组件属性
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* @returns {JSX.Element} 滑块验证码组件JSX元素
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*/
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export const SliderCaptcha: React.FC<SliderCaptchaProps> = ({ onVerify, onClose }) => {
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// 拖拽状态:是否正在拖拽滑块
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const [isDragging, setIsDragging] = useState(false);
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// 滑块当前位置(x坐标)
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const [sliderPosition, setSliderPosition] = useState(0);
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// 拼图y坐标(从后端获取)
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const [puzzleY, setPuzzleY] = useState(0);
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// 验证状态:是否验证成功
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const [isVerified, setIsVerified] = useState(false);
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// 加载状态:是否正在加载资源或验证中
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const [isLoading, setIsLoading] = useState(false);
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// 尝试次数:记录验证失败的次数
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const [attempts, setAttempts] = useState(0);
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// 错误显示状态:是否显示验证错误提示
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const [showError, setShowError] = useState(false);
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// 拖拽偏移量:鼠标/触摸点与滑块中心的偏移,用于精准计算滑块位置
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const [dragOffset, setDragOffset] = useState(0);
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// 背景图Base64字符串(从后端获取)
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const [backgroundImage, setBackgroundImage] = useState<string>('');
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// 拼图Base64字符串(从后端获取)
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const [puzzleImage, setPuzzleImage] = useState<string>('');
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// 验证码进程ID(从后端获取,用于验证时标识当前验证码)
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const [processId, setProcessId] = useState<string>('');
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// 验证结果:false-未验证/验证失败,true-验证成功,'error'-请求错误
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const [verifyResult, setVerifyResult] = useState<boolean | string>(false);
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// 提示信息:显示后端返回的提示或默认提示
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const [msg, setMsg] = useState<string>('拖动滑块完成拼图');
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const sliderRef = useRef<HTMLDivElement | null>(null);
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const trackRef = useRef<HTMLDivElement | null>(null);
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/**
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* 获取验证码资源(背景图、拼图、位置信息等)
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* 从后端接口请求验证码所需的资源数据,包括背景图、拼图的Base64编码,
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* 拼图的y坐标和进程ID,并初始化拼图的x坐标
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*/
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const fetchCaptchaResources = useCallback(async () => {
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try {
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// 开始加载,设置加载状态
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setIsLoading(true);
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// 请求验证码资源接口
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const response = await axios.get(`${API_BASE_URL}/captcha/generate`, {
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withCredentials: true // 关键:允许跨域携带凭证
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});
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2026-01-22 20:44:19 +08:00
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const { code, msg: resMsg, data } = response.data;
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const { masterImage, tileImage, captchaId, y } = data;
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2026-01-20 01:13:56 +08:00
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// 后端返回成功状态(code=200)
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if (code === 200) {
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// 设置背景图
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setBackgroundImage(masterImage);
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2026-01-20 01:13:56 +08:00
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// 设置拼图图片
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setPuzzleImage(tileImage);
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// 设置拼图y坐标(从后端获取,以背景图左上角为原点)
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setPuzzleY(y);
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// 设置进程ID(用于后续验证)
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setProcessId(captchaId);
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// 随机生成拼图x坐标(确保拼图在背景图内)
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// setPuzzlePosition(Math.random() * (CANVAS_WIDTH - 50 - 50) + 50);
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// 保存后端返回的提示信息
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setMsg(resMsg);
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// 结束加载状态
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setIsLoading(false);
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return;
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}
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// 后端返回失败状态(非200)
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setMsg(resMsg || '生成验证码失败');
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setVerifyResult('error');
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setIsLoading(false);
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} catch (error) {
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// 捕获请求异常
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const errMsg = '获取验证码资源失败: ' + (error as Error).message;
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console.error(errMsg);
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setMsg(errMsg);
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setVerifyResult('error');
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setIsLoading(false);
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}
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}, []);
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/**
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* 组件挂载时自动获取验证码资源
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* 依赖fetchCaptchaResources函数,确保函数变化时重新执行
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*/
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useEffect(() => {
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fetchCaptchaResources();
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}, [fetchCaptchaResources]);
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/**
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* 开始拖拽处理函数
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* 记录初始拖拽位置和偏移量,设置拖拽状态
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* @param {number} clientX - 鼠标/触摸点的x坐标
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*/
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const handleStart = useCallback((clientX: number) => {
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if (isVerified || isLoading || verifyResult === 'error') return;
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setIsDragging(true);
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setShowError(false);
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const slider = sliderRef.current;
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if (slider) {
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const rect = slider.getBoundingClientRect();
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setDragOffset(clientX - rect.left - SLIDER_WIDTH / 2);
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}
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}, [isVerified, isLoading, verifyResult]);
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/**
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* 拖拽移动处理函数
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* 根据鼠标/触摸点的移动更新滑块位置,限制滑块在轨道范围内
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* @param {number} clientX - 鼠标/触摸点的x坐标
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*/
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const handleMove = useCallback((clientX: number) => {
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if (!isDragging || isVerified || isLoading || verifyResult === 'error') return;
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const track = trackRef.current;
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if (!track) return;
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const rect = track.getBoundingClientRect();
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const x = clientX - rect.left - dragOffset;
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const maxPosition = TRACK_WIDTH - SLIDER_WIDTH;
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const newPosition = Math.max(0, Math.min(x, maxPosition));
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setSliderPosition(newPosition);
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}, [isDragging, isVerified, isLoading, dragOffset, verifyResult]);
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/**
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* 结束拖拽处理函数
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* 拖拽结束后向后端发送验证请求,处理验证结果
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*/
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const handleEnd = useCallback(async () => {
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if (!isDragging || isVerified || isLoading || verifyResult === 'error') return;
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setIsDragging(false);
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setIsLoading(true);
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try {
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// 向后端发送验证请求,参数为滑块位置(x坐标)和进程ID
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// 使用sliderPosition作为dx值,这是拼图块左上角的位置
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const response = await axios.post(`${API_BASE_URL}/captcha/verify`, {
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dx: sliderPosition, // 滑块位置(拼图左上角x坐标,以背景图左上角为原点)
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captchaId: processId // 验证码进程ID
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},{ withCredentials: true });
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const { code, msg: resMsg, data } = response.data;
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// 保存后端返回的提示信息
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setMsg(resMsg);
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2026-01-22 20:44:19 +08:00
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// 根据后端返回的code判断验证结果
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// 验证成功:code=200
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if (code === 200) {
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// 增加尝试次数
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setAttempts(prev => prev + 1);
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// 重置所有状态,确保验证成功状态的纯净性
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setShowError(false);
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setVerifyResult(false);
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// 直接设置验证成功状态,不使用异步更新
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setIsVerified(true);
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// 延迟1.2秒后调用验证成功回调
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setTimeout(() => onVerify(true), 1200);
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}
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// 验证失败:code=400
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else if (code === 400) {
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// 确保错误状态的正确性:验证失败显示红色
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setVerifyResult(false);
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setShowError(true);
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setIsVerified(false);
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// 增加尝试次数
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setAttempts(prev => prev + 1);
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// 1.5秒后重置滑块位置、隐藏错误提示并重置验证结果
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setTimeout(() => {
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setSliderPosition(0);
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setShowError(false);
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setVerifyResult(false);
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setIsVerified(false);
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}, 1500);
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}
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// 后端返回系统错误(500)
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else if (code === 500) {
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// 系统错误显示橙色
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setVerifyResult('error');
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setShowError(true);
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setIsVerified(false);
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// 增加尝试次数
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setAttempts(prev => prev + 1);
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// 1.5秒后重置滑块位置、隐藏错误提示并重置验证结果
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setTimeout(() => {
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setSliderPosition(0);
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setShowError(false);
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setVerifyResult(false);
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setIsVerified(false);
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}, 1500);
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}
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} catch (error) {
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// 捕获验证请求异常
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const errMsg = '验证请求失败: ' + (error as Error).message;
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console.error(errMsg);
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setMsg(errMsg);
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setVerifyResult('error');
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setShowError(true);
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// 1.5秒后重置滑块位置并隐藏错误提示
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setTimeout(() => {
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setSliderPosition(0);
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setShowError(false);
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}, 1500);
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} finally {
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// 无论成功失败,都结束加载状态
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setIsLoading(false);
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}
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}, [isDragging, isVerified, isLoading, sliderPosition, processId, onVerify, verifyResult]);
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/**
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* 鼠标按下事件处理
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* 阻止默认行为,调用开始拖拽函数
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* @param {React.MouseEvent} e - 鼠标事件对象
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*/
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const handleMouseDown = (e: React.MouseEvent) => {
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e.preventDefault();
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handleStart(e.clientX);
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};
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/**
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* 鼠标移动事件处理
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* 阻止默认行为,调用拖拽移动函数
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* @param {MouseEvent} e - 鼠标事件对象
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*/
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const handleMouseMove = useCallback((e: MouseEvent) => {
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e.preventDefault();
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handleMove(e.clientX);
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}, [handleMove]);
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/**
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* 鼠标释放事件处理
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* 阻止默认行为,调用结束拖拽函数
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* @param {MouseEvent} e - 鼠标事件对象
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*/
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const handleMouseUp = useCallback((e: MouseEvent) => {
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e.preventDefault();
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handleEnd();
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}, [handleEnd]);
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/**
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* 触摸开始事件处理
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* 阻止默认行为,调用开始拖拽函数(适配移动端)
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* @param {React.TouchEvent} e - 触摸事件对象
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*/
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const handleTouchStart = (e: React.TouchEvent) => {
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e.preventDefault();
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handleStart(e.touches[0].clientX);
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};
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/**
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* 触摸移动事件处理
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* 阻止默认行为,调用拖拽移动函数(适配移动端)
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* @param {TouchEvent} e - 触摸事件对象
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*/
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const handleTouchMove = useCallback((e: TouchEvent) => {
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e.preventDefault();
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handleMove(e.touches[0].clientX);
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}, [handleMove]);
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/**
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|
* 触摸结束事件处理
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* 阻止默认行为,调用结束拖拽函数(适配移动端)
|
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* @param {TouchEvent} e - 触摸事件对象
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*/
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const handleTouchEnd = useCallback((e: TouchEvent) => {
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e.preventDefault();
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handleEnd();
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}, [handleEnd]);
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/**
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* 拖拽状态变化时绑定/解绑全局事件
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* 当开始拖拽时,为document绑定鼠标和触摸移动/结束事件;
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* 当结束拖拽时,移除这些事件监听
|
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*/
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useEffect(() => {
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if (isDragging) {
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// 绑定鼠标事件
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document.addEventListener('mousemove', handleMouseMove, { passive: false });
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document.addEventListener('mouseup', handleMouseUp, { passive: false });
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// 绑定触摸事件
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document.addEventListener('touchmove', handleTouchMove, { passive: false });
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document.addEventListener('touchend', handleTouchEnd, { passive: false });
|
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|
// 组件卸载或拖拽状态结束时,移除事件监听
|
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|
return () => {
|
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document.removeEventListener('mousemove', handleMouseMove);
|
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|
document.removeEventListener('mouseup', handleMouseUp);
|
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document.removeEventListener('touchmove', handleTouchMove);
|
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|
document.removeEventListener('touchend', handleTouchEnd);
|
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|
};
|
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|
}
|
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|
}, [isDragging, handleMouseMove, handleMouseUp, handleTouchMove, handleTouchEnd]);
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/**
|
|
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|
|
* 获取滑块显示的图标
|
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|
* 根据不同状态(加载中、已验证、错误、默认)返回不同图标
|
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|
|
* @returns {JSX.Element} 滑块图标
|
|
|
|
|
|
*/
|
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|
|
|
const getSliderIcon = () => {
|
|
|
|
|
|
if (isLoading) {
|
|
|
|
|
|
// 加载中显示旋转动画
|
|
|
|
|
|
return <div className="w-5 h-5 border-2 border-blue-300 border-t-blue-600 rounded-full animate-spin" />;
|
|
|
|
|
|
}
|
2026-01-22 20:44:19 +08:00
|
|
|
|
// 验证成功时,无论其他状态如何,都显示对勾图标
|
2026-01-20 01:13:56 +08:00
|
|
|
|
if (isVerified) {
|
|
|
|
|
|
return <Check className="w-5 h-5 text-green-600" />;
|
|
|
|
|
|
}
|
2026-01-22 20:44:19 +08:00
|
|
|
|
// 验证失败或错误时显示叉号图标
|
|
|
|
|
|
if (showError || verifyResult === 'error') {
|
2026-01-20 01:13:56 +08:00
|
|
|
|
return <X className="w-5 h-5 text-red-600" />;
|
|
|
|
|
|
}
|
|
|
|
|
|
// 默认显示蓝色圆点
|
|
|
|
|
|
return <div className="w-3 h-3 bg-blue-500 rounded-full" />;
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
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|
|
|
|
|
|
|
|
const getStatusText = () => {
|
2026-01-22 20:44:19 +08:00
|
|
|
|
if (isVerified) {
|
|
|
|
|
|
// 验证成功时优先显示成功消息
|
|
|
|
|
|
return msg;
|
|
|
|
|
|
}
|
|
|
|
|
|
if (verifyResult === 'error' || showError) {
|
|
|
|
|
|
// 错误或验证失败时显示后端返回的消息
|
2026-01-20 01:13:56 +08:00
|
|
|
|
return msg;
|
|
|
|
|
|
}
|
|
|
|
|
|
// 默认显示拖拽提示
|
|
|
|
|
|
return '拖动滑块完成拼图';
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
const getStatusColor = () => {
|
|
|
|
|
|
if (isVerified) return 'text-green-700';
|
2026-01-22 20:44:19 +08:00
|
|
|
|
if (verifyResult === 'error') return 'text-orange-700';
|
2026-01-20 01:13:56 +08:00
|
|
|
|
if (showError) return 'text-red-700';
|
|
|
|
|
|
return 'text-gray-600';
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
const getProgressColor = () => {
|
2026-01-22 20:44:19 +08:00
|
|
|
|
// 验证成功时,无论其他状态如何,都显示绿色渐变
|
2026-01-20 01:13:56 +08:00
|
|
|
|
if (isVerified) return 'bg-gradient-to-r from-green-400 to-green-500';
|
2026-01-22 20:44:19 +08:00
|
|
|
|
// 系统错误(后端返回400/500)显示橙色渐变
|
|
|
|
|
|
if (verifyResult === 'error') return 'bg-gradient-to-r from-orange-400 to-orange-500';
|
|
|
|
|
|
// 验证失败(后端返回200但data=false)显示红色渐变
|
|
|
|
|
|
if (showError && verifyResult !== 'error') return 'bg-gradient-to-r from-red-400 to-red-500';
|
|
|
|
|
|
// 默认显示蓝色渐变
|
2026-01-20 01:13:56 +08:00
|
|
|
|
return 'bg-gradient-to-r from-blue-400 to-blue-500';
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
return (
|
|
|
|
|
|
<div className="fixed inset-0 bg-black/60 backdrop-blur-sm flex items-center justify-center z-50 p-4">
|
|
|
|
|
|
<div className="bg-white rounded-2xl shadow-2xl w-full max-w-md mx-auto transform transition-all duration-300 scale-100">
|
|
|
|
|
|
{/* 头部区域:显示标题和关闭按钮 */}
|
|
|
|
|
|
<div className="flex items-center justify-between p-6 border-b border-gray-100">
|
|
|
|
|
|
<div className="flex items-center space-x-3">
|
|
|
|
|
|
<div className="w-8 h-8 bg-gradient-to-br from-blue-500 to-blue-600 rounded-lg flex items-center justify-center">
|
|
|
|
|
|
<Shield className="w-4 h-4 text-white" />
|
|
|
|
|
|
</div>
|
|
|
|
|
|
<h3 className="text-lg font-semibold text-gray-900">安全验证</h3>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
{/* 关闭按钮 */}
|
|
|
|
|
|
<button onClick={onClose} className="p-2 rounded-lg hover:bg-gray-100 transition-colors" title="关闭">
|
|
|
|
|
|
<X className="w-4 h-4 text-gray-500" />
|
|
|
|
|
|
</button>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
{/* 显示验证码图片和滑块 */}
|
|
|
|
|
|
<div className="p-6">
|
|
|
|
|
|
<div className="relative">
|
|
|
|
|
|
{/* 背景图片容器:尺寸300x200px,与后端图片尺寸匹配 */}
|
|
|
|
|
|
<div className="relative bg-gray-200 rounded-lg w-[300px] h-[200px] mb-4 overflow-hidden mx-auto">
|
|
|
|
|
|
{backgroundImage && (
|
|
|
|
|
|
<img
|
|
|
|
|
|
src={backgroundImage}
|
|
|
|
|
|
alt="验证背景"
|
|
|
|
|
|
className="h-full w-full object-cover" // 图片填满容器
|
|
|
|
|
|
/>
|
|
|
|
|
|
)}
|
|
|
|
|
|
{/* 可移动拼图块 */}
|
2026-01-22 20:44:19 +08:00
|
|
|
|
{puzzleImage && (
|
2026-01-20 01:13:56 +08:00
|
|
|
|
<div
|
|
|
|
|
|
className="absolute transition-all duration-300"
|
|
|
|
|
|
style={{
|
|
|
|
|
|
left: `${sliderPosition}px`, // 滑块x位置(拼图左上角x坐标)
|
|
|
|
|
|
top: `${puzzleY}px`, // 拼图y位置(从后端获取,拼图左上角y坐标)
|
|
|
|
|
|
zIndex: 10,
|
|
|
|
|
|
}}
|
|
|
|
|
|
>
|
|
|
|
|
|
<img
|
|
|
|
|
|
src={puzzleImage}
|
|
|
|
|
|
alt="拼图块"
|
|
|
|
|
|
className={`${isVerified ? 'opacity-100' : 'opacity-90'}`}
|
|
|
|
|
|
style={{
|
|
|
|
|
|
filter: isVerified ? 'drop-shadow(0 0 10px rgba(34, 197, 94, 0.5))' : 'drop-shadow(0 2px 4px rgba(0,0,0,0.3))'
|
|
|
|
|
|
}}
|
|
|
|
|
|
/>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
)}
|
|
|
|
|
|
</div>
|
|
|
|
|
|
{/* 提示文本 */}
|
|
|
|
|
|
<p className="text-sm text-gray-600 mb-4 text-center">{getStatusText()}</p>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
{/* 滑动轨道 */}
|
|
|
|
|
|
<div className="relative bg-gray-100 rounded-full h-12 overflow-hidden select-none" ref={trackRef} style={{ width: `${TRACK_WIDTH}px`, margin: '0 auto' }}>
|
|
|
|
|
|
{/* 进度条 */}
|
|
|
|
|
|
<div
|
|
|
|
|
|
className={`absolute left-0 top-0 h-full transition-all duration-200 ease-out ${getProgressColor()}`}
|
|
|
|
|
|
style={{
|
|
|
|
|
|
width: `${sliderPosition + SLIDER_WIDTH}px`,
|
|
|
|
|
|
transform: isDragging ? 'scaleY(1.05)' : 'scaleY(1)',
|
|
|
|
|
|
transformOrigin: 'bottom'
|
|
|
|
|
|
}}
|
|
|
|
|
|
/>
|
|
|
|
|
|
{/* 滑块按钮 */}
|
|
|
|
|
|
<div
|
|
|
|
|
|
className={`absolute top-1 w-10 h-10 bg-white rounded-full shadow-lg cursor-pointer flex items-center justify-center transition-all duration-200 ease-out select-none ${
|
|
|
|
|
|
isDragging ? 'scale-110 shadow-xl' : 'scale-100'
|
|
|
|
|
|
} ${isVerified || verifyResult === 'error' ? 'cursor-default' : 'cursor-grab active:cursor-grabbing'}`}
|
|
|
|
|
|
style={{ left: `${sliderPosition + 2}px`, zIndex: 10 }}
|
|
|
|
|
|
onMouseDown={handleMouseDown}
|
|
|
|
|
|
onTouchStart={handleTouchStart}
|
|
|
|
|
|
ref={sliderRef}
|
|
|
|
|
|
disabled={verifyResult === 'error'}
|
|
|
|
|
|
>
|
|
|
|
|
|
{getSliderIcon()}
|
|
|
|
|
|
</div>
|
|
|
|
|
|
{/* 轨道上的提示文字 */}
|
|
|
|
|
|
<div className="absolute inset-0 flex items-center justify-center pointer-events-none">
|
|
|
|
|
|
<span className={`text-sm font-medium transition-all duration-300 ${
|
|
|
|
|
|
sliderPosition > 60 ? 'opacity-0 transform translate-x-4' : 'opacity-100 transform translate-x-0'
|
|
|
|
|
|
} ${getStatusColor()}`}>
|
|
|
|
|
|
{getStatusText()}
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
{/* 底部信息区域 */}
|
|
|
|
|
|
<div className="px-6 pb-6">
|
|
|
|
|
|
<div className="flex items-center justify-between text-xs text-gray-500">
|
2026-01-22 20:44:19 +08:00
|
|
|
|
<span>尝试次数: {attempts}</span>
|
2026-01-20 01:13:56 +08:00
|
|
|
|
<span className="flex items-center space-x-1">
|
|
|
|
|
|
<Shield className="w-3 h-3" />
|
|
|
|
|
|
<span>安全验证</span>
|
|
|
|
|
|
</span>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
</div>
|
|
|
|
|
|
);
|
|
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
export default SliderCaptcha;
|