QrScanner.vue

<template>
  <div class="scanner-wrapper">
    <div class="scanner-header">
      <div class="title">扫一扫</div>
      <var-button class="close-btn" round text @click="$emit('close')">
        <var-icon name="close" color="#fff" size="24" />
      </var-button>
    </div>
    
    <div class="container">
      <!-- 扫描区域 -->
      <div class="scanner" id="reader"></div>
      <!-- 扫描动画 -->
      <div class="scanner-frame">
        <div class="scanner-bar"></div>
        <div class="scanner-text">{{ lastResult }}</div>
      </div>
      
      <!-- 扫描结果显示 -->
      <div v-if="scanResult" class="scan-result">
        <div class="result-content">
          {{ scanResult }}
        </div>
      </div>
    </div>

    <!-- 底部关闭按钮 -->
    <div class="bottom-action">
      <var-button
        class="cancel-btn"
        
        @click="$emit('close')"
      >
        取消扫码
      </var-button>
    </div>
  </div>
</template>

<script setup>
import { onMounted, onUnmounted, ref } from 'vue'
import CryptoJS from 'crypto-js'
import { Html5Qrcode } from 'html5-qrcode'

const emit = defineEmits(['close', 'scan-success', 'scan-error'])
let html5QrCode = null
const scanResult = ref('')
const isScanning = ref(false)
const lastResult = ref('')

// 解密函数
function decrypt(encryptedText, key) {
  try {
    const bytes = CryptoJS.AES.decrypt(encryptedText, key)
    return bytes.toString(CryptoJS.enc.Utf8)
  } catch (error) {
    console.error('解密失败:', error)
    return ''
  }
}

function handleScanSuccess(decodedText, decodedResult) {
  try {
    // 更新扫描结果显示
    scanResult.value = decodedText
    lastResult.value = '扫描成功，正在处理...'
    
    // 解密
    const secretKey = 'mySecretKey'
    const decryptedText = decrypt(decodedText, secretKey)
    
    console.log('解密结果:', decryptedText) // 添加调试日志
    
    // 尝试解析参数
    if (decryptedText.startsWith('?')) {
      const params = new URLSearchParams(decryptedText)
      const userId = params.get('userId')
      const name = params.get('name')
      const phone = params.get('phone')
      
      console.log('解析参数:', { userId, name, phone }) // 添加调试日志
      
      if (userId && name && phone) {
        lastResult.value = '解析成功，即将跳转...'
        emit('scan-success', decryptedText)
      } else {
        lastResult.value = '二维码格式不正确'
        emit('scan-error', '无效的二维码格式')
      }
    } else {
      lastResult.value = '二维码格式不正确'
      emit('scan-error', '无效的二维码格式')
    }
  } catch (error) {
    console.error('处理扫描结果失败:', error) // 添加错误日志
    lastResult.value = '二维码解析失败'
    emit('scan-error', '无效的二维码')
  }
}

function startScanner() {
  isScanning.value = true
  lastResult.value = '正在启动摄像头...'
  
  html5QrCode.start(
    { facingMode: "environment" },
    {
      fps: 10,
      qrbox: { width: 250, height: 250 },
    },
    handleScanSuccess,
    (errorMessage) => {
      // 更新扫描状态
      lastResult.value = '请将二维码对准扫描框'
    }
  ).catch((err) => {
    isScanning.value = false
    lastResult.value = '摄像头启动失败'
    emit('scan-error', '无法访问摄像头，请确保已授权')
  })
}

function initializeScanner() {
  lastResult.value = '正在检测摄像头...'
  
  Html5Qrcode.getCameras()
    .then((devices) => {
      if (devices && devices.length) {
        html5QrCode = new Html5Qrcode("reader")
        startScanner()
      } else {
        lastResult.value = '没有找到可用的摄像头'
        emit('scan-error', '没有检测到摄像头')
      }
    })
    .catch((err) => {
      lastResult.value = '请授予相机访问权限'
      emit('scan-error', '请授予相机访问权限')
    })
}

onMounted(() => {
  setTimeout(initializeScanner, 500)
})

onUnmounted(() => {
  if (html5QrCode && isScanning.value) {
    html5QrCode.stop().catch(console.error)
  }
})
</script>

<style scoped>
.scanner-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #000;
  z-index: 999;
}

.scanner-header {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  padding: 40px 16px 16px;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.title {
  color: #fff;
  font-size: 18px;
  font-weight: 500;
}

.close-btn {
  position: absolute;
  right: 16px;
  top: 36px;
}

.container {
  position: relative;
  height: 100vh;
  width: 100vw;
  display: flex;
  justify-content: center;
  align-items: center;
}

.scanner {
  width: 100%;
  height: 100%;
}

.scanner-frame {
  position: absolute;
  width: 250px;
  height: 250px;
  border: 4px solid rgba(255, 255, 255, 0.8);
  border-radius: 16px;
  background-color: transparent;
  box-shadow: 0 0 0 100vmax rgba(0, 0, 0, 0.8);
  overflow: hidden;
}

.scanner-text {
  position: absolute;
  bottom: -40px;
  width: 100%;
  text-align: center;
  color: #fff;
  font-size: 14px;
  padding: 8px;
  background: rgba(0, 0, 0, 0.5);
  border-radius: 4px;
}

.scanner-bar {
  position: absolute;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(to right, transparent, #fff, transparent);
  animation: scanAnimation 4s infinite linear;
  box-shadow: 0 0 8px rgba(255, 255, 255, 0.6);
}

@keyframes scanAnimation {
  0% {
    top: 0;
  }
  50% {
    top: 50%;
  }
  100% {
    top: 100%;
  }
}

.bottom-action {
  position: absolute;
  bottom: 40px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  padding: 0 20px;
}

.cancel-btn {
  width: 140px;
  height: 44px;
  background: rgba(255, 255, 255, 0.9) !important;
  color: #333 !important;
  font-size: 16px;
  border: none;
  backdrop-filter: blur(10px);
}

.scan-result {
  position: absolute;
  bottom: 120px;
  left: 20px;
  right: 20px;
  background: rgba(0, 0, 0, 0.7);
  padding: 12px;
  border-radius: 8px;
  
  .result-content {
    color: #fff;
    font-size: 14px;
    word-break: break-all;
    text-align: center;
    max-height: 60px;
    overflow-y: auto;
  }
}
</style>