从托管在google存储上的静态网站发送电子邮件(使用google服务)

// 导入Gmail API库
const { google } = require('googleapis');

// 配置Gmail API凭据
const credentials = require('path/to/credentials.json');
const { client_secret, client_id, redirect_uris } = credentials.installed;
const oAuth2Client = new google.auth.OAuth2(client_id, client_secret, redirect_uris[0]);

// 授权访问Gmail API
const authUrl = oAuth2Client.generateAuthUrl({
  access_type: 'offline',
  scope: ['https://www.googleapis.com/auth/gmail.send'],
});
console.log('请访问以下URL以授权访问Gmail API：', authUrl);

// 获取授权码并交换访问令牌
const authCode = '授权码';
oAuth2Client.getToken(authCode, (err, token) => {
  if (err) return console.error('获取访问令牌时出错：', err);
  oAuth2Client.setCredentials(token);

  // 创建Gmail API客户端
  const gmail = google.gmail({ version: 'v1', auth: oAuth2Client });

  // 构建电子邮件消息
  const email = {
    to: '收件人邮箱',
    subject: '邮件主题',
    message: '邮件内容',
  };

  // 发送电子邮件
  gmail.users.messages.send({
    userId: 'me',
    requestBody: {
      raw: createRawMessage(email),
    },
  }, (err, res) => {
    if (err) return console.error('发送电子邮件时出错：', err);
    console.log('电子邮件已发送：', res.data);
  });
});

// 创建原始电子邮件消息
function createRawMessage(email) {
  const messageParts = [
    `To: ${email.to}`,
    'Content-Type: text/html; charset=utf-8',
    'MIME-Version: 1.0',
    `Subject: ${email.subject}`,
    '',
    email.message,
  ];
  const rawMessage = messageParts.join('\n').trim();
  const encodedMessage = Buffer.from(rawMessage).toString('base64');
  return encodedMessage;
}