node-red-contrib-feishu/email.js

Node-RED节点用于发送飞书消息

module.exports = function(RED) {
    /**
     * 邮件配置节点构造函数
     * @param {Object} config - 节点配置对象
     */
    function EmailConfigNode(config) {
        RED.nodes.createNode(this, config);
        this.host = config.host;
        this.port = config.port;
        this.secure = config.secure;
        this.user = config.user;
        this.password = config.password;
    }

    // 注册邮件配置节点
    RED.nodes.registerType("email-config", EmailConfigNode);

    /**
     * 邮件节点构造函数
     * @param {Object} config - 节点配置对象
     */
    function EmailNode(config) {
        RED.nodes.createNode(this, config);
        const node = this;
        const nodemailer = require('nodemailer');

        // 获取邮件配置
        const emailConfig = RED.nodes.getNode(config.emailConfig);

        // 创建邮件传输对象
        const transporter = nodemailer.createTransport({
            host: emailConfig.host,
            port: emailConfig.port,
            secure: emailConfig.secure,
            auth: {
                user: emailConfig.user,
                pass: emailConfig.password
            }
        });

        node.on('input', async function(msg) {
            try {
                // 验证必要参数
                if (!msg.payload) {
                    throw new Error('邮件内容是必需的');
                }

                // 构建邮件选项
                const mailOptions = {
                    from: emailConfig.user,
                    to: config.to || msg.to,
                    subject: config.subject || msg.subject || '',
                };

                // 根据消息类型设置内容
                const messageType = config.messageType || msg.messageType || 'text';
                if (messageType === 'html') {
                    mailOptions.html = typeof msg.payload === 'string' ? 
                        msg.payload : JSON.stringify(msg.payload);
                } else {
                    mailOptions.text = typeof msg.payload === 'string' ? 
                        msg.payload : JSON.stringify(msg.payload);
                }

                // 发送邮件
                const info = await transporter.sendMail(mailOptions);
                
                // 发送成功
                node.status({fill: "green", shape: "dot", text: "发送成功"});
                msg.payload = info;
                node.send(msg);
            } catch (error) {
                // 发送失败
                node.status({fill: "red", shape: "ring", text: "发送失败"});
                node.error(error.message, msg);
            }
        });

        // 节点关闭时清除状态
        node.on('close', function() {
            node.status({});
        });
    }

    // 注册邮件节点
    RED.nodes.registerType('email', EmailNode);
};