如何在node js中使用Gmail api回复threadId？

Question

这里我想使用 Gmail 发送回复 API。为此，我在检索时得到了成功的回应。现在我有 threadId 使用该 threadId 我需要发送回复而不是创建新线程

这是我对邮件检索的回复

{
  id: '178fe5f9cc632096',
  threadId: '178fe5f9cc632096',
  labelIds: [ 'IMPORTANT', 'CATEGORY_PERSONAL', 'INBOX' ],
  snippet: 'it&#39;s working --',
  payload: {
    partId: '',
    mimeType: 'multipart/alternative',
    filename: '',
    headers: [
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object], [Object], [Object],
      [Object]
    ],
    body: { size: 0 },
    parts: [ [Object], [Object] ]
  },
  sizeEstimate: 5218,
  historyId: '119777',
  internalDate: '1619175369000'
}

还有我发送回复的代码

function makeBody(to, from, subject, message) {
    var str = ["Content-Type: text/plain; charset=\"UTF-8\"\n",
        "MIME-Version: 1.0\n",
        "Content-Transfer-Encoding: 7bit\n",
        "to: ", to, "\n",
        "from: ", from, "\n",
        "subject: ", subject, "\n\n",
        message
    ].join('');

    var encodedMail = Buffer.from(str).toString("base64").replace(/\+/g, '-').replace(/\//g, '_');
    return encodedMail
}
function sendMessage(auth) {
                    try {
                        var raw = makeBody('abc@gmail.com', 'xyz@gmail.com', 'test subject', 'workinggggggg...');
                        const gmail = google.gmail({ version: 'v1', auth });
                        gmail.users.messages.send({
                            auth: auth,
                            userId: 'me',
                            resource: {
                                raw: raw,
                                message_id: res.data.threadId
                            }
                        }, function (err, response) {
                            if (err) {
                                return console.log('The API returned an error: ' + err);
                            }
                            else
                                console.log(response)
                        });
                    } catch (error) {
                        console.log(error)
                    }
                }

但是在使用这段代码时，正在创建一个新线程。需要帮助。

Answer 1

根据documentation：

If you're trying to send a reply and want the email to thread, make sure that:

The Subject headers match The References and In-Reply-To headers follow the RFC 2822 standard.

因此，如果 'test subject' 不是您要回复的电子邮件的真正主题，那么证明 'test subject' 作为主题将不起作用。

另外：

因为你可以绘制Resource: Message，你应该将线程id传递给参数threadId。 message_id不是有效参数。

Answer 2

解决方案是将 Message-Id 保留为 In-Reply-To 和 References 您需要像下面这样更新 In-Reply-To 和 References 值

function makeBody(ref, InReply, to, from, subject, message) {
    var str = ["Content-Type: text/plain; charset=\"UTF-8\"\n",
        "MIME-Version: 1.0\n",
        "Content-Transfer-Encoding: 7bit\n",
        "References:", ref, "\n" +
        "In-Reply-To: ", InReply, "\n" +
        "to: ", to, "\n",
        "from: ", from, "\n",
        "subject: ", subject, "\n\n",
        message
    ].join('');

    var encodedMail = Buffer.from(str).toString("base64").replace(/\+/g, '-').replace(/\//g, '_');
    return encodedMail
}

const headers = res.data.payload.headers
                        let subject
                        let to
                        let ref
                        let InReply
                        headers.forEach(element => {
                            if (element.name === 'Subject' || element.name === 'subject') {
                                subject = element.value
                            }
                            if (element.name === 'From' || element.name === 'from') {
                                to = element.value
                            }
                            if (element.name === 'Message-ID' || element.name === 'Message-Id') {
                                ref = element.value
                                InReply = element.value
                            }
                        });
  var raw = makeBody(ref, InReply, to, 'example1@gmail.com', subject, 'reply message text');

如何在node js中使用Gmail api回复threadId？

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