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// 开发文档: https://uniapp.dcloud.net.cn/uniCloud/cloud-obj
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//导入验证码公共模块
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const uniCaptcha = require('uni-captcha')
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//获取数据库对象
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const db = uniCloud.database();
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//获取数据表opendb-verify-codes对象
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const verifyCodes = db.collection('opendb-verify-codes')
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module.exports = {
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async getImageCaptcha({
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scene
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}) {
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//获取设备id
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let {
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deviceId,
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platform
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} = this.getClientInfo();
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//根据：设备id、场景值、状态，查找记录是否存在
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let res = await verifyCodes.where({
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scene,
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deviceId,
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state: 0
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}).limit(1).get()
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//如果已存在则调用刷新接口，反之调用插件接口
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let action = res.data.length ? 'refresh' : 'create'
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//执行并返回结果
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//导入配置，配置优先级说明：此处配置 > uni-config-center
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return await uniCaptcha[action]({
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scene, //来源客户端传递，表示：使用场景值，用于防止不同功能的验证码混用
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uniPlatform: platform
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})
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}
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}
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