Initial commit

Co-authored-by: Cursor <cursoragent@cursor.com>

services/gmail.js

@@ -0,0 +1,234 @@
+/**
+ * Gmail service – OAuth client, send reply, send ticket-closed email.
+ */
+const { google } = require('googleapis');
+const { CONFIG } = require('../config');
+const { extractRawEmail } = require('../utils');
+
+function getGmailClient() {
+  const auth = new google.auth.OAuth2(
+    process.env.GOOGLE_CLIENT_ID,
+    process.env.GOOGLE_CLIENT_SECRET
+  );
+  auth.setCredentials({ refresh_token: CONFIG.REFRESH_TOKEN });
+  return google.gmail({ version: 'v1', auth });
+}
+
+async function sendGmailReply(
+  threadId,
+  replyText,
+  recipientEmail,
+  subject,
+  discordUser,
+  messageId
+) {
+  const gmail = getGmailClient();
+
+  const utf8Subject = `=?utf-8?B?${Buffer.from(
+    `Re: ${subject}`
+  ).toString('base64')}?=`;
+  const htmlBody = `
+    <div style="font-family: sans-serif; font-size: 14px; color: #333;">
+      <p><strong>From:</strong> ${discordUser} on Discord</p>
+      <p>${replyText.replace(/\n/g, '<br>')}</p>
+      <hr style="border:none; border-top:1px solid #ddd; margin:20px 0;">
+      <table border="0" cellpadding="0" cellspacing="0">
+        <tr>
+          <td style="padding-right: 12px;">
+            <img src="${CONFIG.LOGO_URL}" width="65">
+          </td>
+          <td style="border-left: 1px solid #ddd; padding-left: 12px;">
+            <p style="margin: 0; font-weight: bold;">${discordUser}</p>
+            <div style="color: #666; font-size: 12px;">${CONFIG.SIGNATURE}</div>
+          </td>
+        </tr>
+      </table>
+    </div>`;
+
+  const headers = [
+    `From: ${CONFIG.MY_EMAIL}`,
+    `To: ${recipientEmail}`,
+    `Subject: ${utf8Subject}`,
+    messageId ? `In-Reply-To: ${messageId}` : '',
+    messageId ? `References: ${messageId}` : '',
+    'MIME-Version: 1.0',
+    'Content-Type: text/html; charset="UTF-8"',
+    '',
+    htmlBody
+  ].filter(Boolean);
+
+  const raw = Buffer.from(headers.join('\r\n'))
+    .toString('base64')
+    .replace(/\+/g, '-')
+    .replace(/\//g, '_')
+    .replace(/=+$/, '');
+
+  await gmail.users.messages.send({
+    userId: 'me',
+    requestBody: { raw, threadId }
+  });
+}
+
+async function sendTicketClosedEmail(ticket, discordDisplayName) {
+  try {
+    const gmail = getGmailClient();
+
+    // Send to the ticket sender (customer), not derived from thread (which can be support)
+    const recipientEmail = extractRawEmail(ticket.senderEmail || '').toLowerCase();
+    if (!recipientEmail || recipientEmail === CONFIG.MY_EMAIL) return;
+
+    let subjectHeader = ticket.subject || 'Support';
+    let msgId = null;
+    try {
+      const thread = await gmail.users.threads.get({
+        userId: 'me',
+        id: ticket.gmailThreadId
+      });
+      const messages = thread.data.messages || [];
+      const lastMsg = [...messages].reverse()[0];
+      if (lastMsg?.payload?.headers) {
+        const subj = lastMsg.payload.headers.find(h => h.name === 'Subject')?.value;
+        if (subj) subjectHeader = subj;
+        msgId = lastMsg.payload.headers.find(h => h.name === 'Message-ID')?.value;
+      }
+    } catch (_) {
+      /* use ticket.subject and no In-Reply-To if thread fetch fails */
+    }
+
+    const finalSubject = `${CONFIG.TICKET_CLOSE_SUBJECT_PREFIX} ${subjectHeader}`;
+    const utf8Subject = `=?utf-8?B?${Buffer.from(
+      finalSubject
+    ).toString('base64')}?=`;
+
+    const serverDisplayName = discordDisplayName || 'Support';
+
+    const htmlBody = `
+      <div style="font-family: sans-serif; font-size: 14px; color: #333;">
+        <p><strong>From:</strong> ${serverDisplayName} on Discord</p>
+        <p><strong>Message:</strong></p>
+        <p>${CONFIG.TICKET_CLOSE_MESSAGE.replace(/\n/g, '<br>')}</p>
+        <p style="margin-top: 16px;">${CONFIG.TICKET_CLOSE_SIGNATURE}</p>
+        <hr style="border:none; border-top:1px solid #ddd; margin:20px 0;">
+        <table border="0" cellpadding="0" cellspacing="0">
+          <tr>
+            <td style="padding-right: 12px;">
+              <img src="${CONFIG.LOGO_URL}" width="65">
+            </td>
+            <td style="border-left: 1px solid #ddd; padding-left: 12px;">
+              <p style="margin: 0; font-weight: bold;">${serverDisplayName}</p>
+              <div style="color: #666; font-size: 12px;">${CONFIG.SIGNATURE}</div>
+            </td>
+          </tr>
+        </table>
+      </div>`;
+
+    const rawHeaders = [
+      `From: ${CONFIG.MY_EMAIL}`,
+      `To: ${recipientEmail}`,
+      `Subject: ${utf8Subject}`,
+      msgId ? `In-Reply-To: ${msgId}` : '',
+      msgId ? `References: ${msgId}` : '',
+      'MIME-Version: 1.0',
+      'Content-Type: text/html; charset="UTF-8"',
+      '',
+      htmlBody
+    ].filter(Boolean);
+
+    const raw = Buffer.from(rawHeaders.join('\r\n'))
+      .toString('base64')
+      .replace(/\+/g, '-')
+      .replace(/\//g, '_')
+      .replace(/=+$/, '');
+
+    await gmail.users.messages.send({
+      userId: 'me',
+      requestBody: { raw, threadId: ticket.gmailThreadId }
+    });
+  } catch (err) {
+    console.error('Ticket closed email error:', err);
+  }
+}
+
+/**
+ * Send a notification email in the ticket thread (e.g. escalation, high-priority).
+ * @param {Object} ticket - Ticket with gmailThreadId, senderEmail, subject
+ * @param {string} subjectLine - Subject line (e.g. "Ticket escalated" or "Priority updated")
+ * @param {string} messageBody - Plain or HTML message body
+ * @param {string} [fromLabel] - Label for "From" (e.g. "Support on Discord")
+ */
+async function sendTicketNotificationEmail(ticket, subjectLine, messageBody, fromLabel) {
+  try {
+    const gmail = getGmailClient();
+    const recipientEmail = extractRawEmail(ticket.senderEmail || '').toLowerCase();
+    if (!recipientEmail || recipientEmail === CONFIG.MY_EMAIL) return;
+
+    let subjectHeader = ticket.subject || 'Support';
+    let msgId = null;
+    try {
+      const thread = await gmail.users.threads.get({
+        userId: 'me',
+        id: ticket.gmailThreadId
+      });
+      const messages = thread.data.messages || [];
+      const lastMsg = [...messages].reverse()[0];
+      if (lastMsg?.payload?.headers) {
+        const subj = lastMsg.payload.headers.find(h => h.name === 'Subject')?.value;
+        if (subj) subjectHeader = subj;
+        msgId = lastMsg.payload.headers.find(h => h.name === 'Message-ID')?.value;
+      }
+    } catch (_) {}
+
+    const finalSubject = subjectLine || subjectHeader;
+    const utf8Subject = `=?utf-8?B?${Buffer.from(finalSubject).toString('base64')}?=`;
+    const label = fromLabel || CONFIG.SUPPORT_NAME || 'Support';
+    const htmlBody = `
+      <div style="font-family: sans-serif; font-size: 14px; color: #333;">
+        <p><strong>From:</strong> ${label} on Discord</p>
+        <p>${(messageBody || '').replace(/\n/g, '<br>')}</p>
+        <hr style="border:none; border-top:1px solid #ddd; margin:20px 0;">
+        <table border="0" cellpadding="0" cellspacing="0">
+          <tr>
+            <td style="padding-right: 12px;">
+              <img src="${CONFIG.LOGO_URL}" width="65">
+            </td>
+            <td style="border-left: 1px solid #ddd; padding-left: 12px;">
+              <p style="margin: 0; font-weight: bold;">${label}</p>
+              <div style="color: #666; font-size: 12px;">${CONFIG.SIGNATURE}</div>
+            </td>
+          </tr>
+        </table>
+      </div>`;
+
+    const rawHeaders = [
+      `From: ${CONFIG.MY_EMAIL}`,
+      `To: ${recipientEmail}`,
+      `Subject: ${utf8Subject}`,
+      msgId ? `In-Reply-To: ${msgId}` : '',
+      msgId ? `References: ${msgId}` : '',
+      'MIME-Version: 1.0',
+      'Content-Type: text/html; charset="UTF-8"',
+      '',
+      htmlBody
+    ].filter(Boolean);
+
+    const raw = Buffer.from(rawHeaders.join('\r\n'))
+      .toString('base64')
+      .replace(/\+/g, '-')
+      .replace(/\//g, '_')
+      .replace(/=+$/, '');
+
+    await gmail.users.messages.send({
+      userId: 'me',
+      requestBody: { raw, threadId: ticket.gmailThreadId }
+    });
+  } catch (err) {
+    console.error('Ticket notification email error:', err);
+  }
+}
+
+module.exports = {
+  getGmailClient,
+  sendGmailReply,
+  sendTicketClosedEmail,
+  sendTicketNotificationEmail
+};