added send

apps/x/packages/core/src/auth/providers.ts

@@ -75,7 +75,7 @@ const providerConfigs: ProviderConfig = {
       mode: 'static',
     },
     scopes: [
-      'https://www.googleapis.com/auth/gmail.readonly',
+      'https://www.googleapis.com/auth/gmail.modify',
       'https://www.googleapis.com/auth/calendar.events.readonly',
       'https://www.googleapis.com/auth/drive.readonly',
     ],

apps/x/packages/core/src/knowledge/sync_gmail.ts

@@ -26,7 +26,7 @@ const CACHE_DIR = path.join(WorkDir, 'inbox_lists');
     }
 })();
 const SYNC_INTERVAL_MS = 30 * 1000; // Check every 30 seconds
-const REQUIRED_SCOPE = 'https://www.googleapis.com/auth/gmail.readonly';
+const REQUIRED_SCOPE = 'https://www.googleapis.com/auth/gmail.modify';
 const MAX_THREADS_IN_DIGEST = 10;
 const RECENT_BACKFILL_INTERVAL_MS = 15 * 60 * 1000;
 const nhm = new NodeHtmlMarkdown();
@@ -114,6 +114,7 @@ export interface GmailThreadSnapshot {
             sizeBytes?: number;
             savedPath: string;
         }>;
+        messageIdHeader?: string;
     }>;
 }
 
@@ -1158,6 +1159,100 @@ async function performSync() {
     }
 }
 
+// --- Send Reply ---
+
+export interface SendReplyOptions {
+    threadId: string;
+    to: string;
+    subject: string;
+    bodyHtml: string;
+    bodyText: string;
+    inReplyTo?: string;
+    references?: string;
+}
+
+export interface SendReplyResult {
+    messageId?: string;
+    error?: string;
+}
+
+function encodeRfc2047(text: string): string {
+    // Only encode if non-ASCII chars present.
+    // eslint-disable-next-line no-control-regex
+    if (/^[\x00-\x7F]*$/.test(text)) return text;
+    return `=?UTF-8?B?${Buffer.from(text).toString('base64')}?=`;
+}
+
+export async function sendThreadReply(opts: SendReplyOptions): Promise<SendReplyResult> {
+    const auth = await GoogleClientFactory.getClient();
+    if (!auth) return { error: 'Gmail is not connected.' };
+
+    const gmailClient = google.gmail({ version: 'v1', auth });
+    const userEmail = await getUserEmail(auth);
+    if (!userEmail) return { error: 'Could not determine your Gmail address.' };
+
+    const boundary = `b_${Date.now()}_${Math.random().toString(36).slice(2, 10)}`;
+    const headers: string[] = [];
+    headers.push(`From: ${userEmail}`);
+    headers.push(`To: ${opts.to}`);
+    headers.push(`Subject: ${encodeRfc2047(opts.subject)}`);
+    if (opts.inReplyTo) headers.push(`In-Reply-To: ${opts.inReplyTo}`);
+    if (opts.references) headers.push(`References: ${opts.references}`);
+    headers.push('MIME-Version: 1.0');
+    headers.push(`Content-Type: multipart/alternative; boundary="${boundary}"`);
+
+    const parts: string[] = [];
+    parts.push(`--${boundary}`);
+    parts.push('Content-Type: text/plain; charset="UTF-8"');
+    parts.push('Content-Transfer-Encoding: 7bit');
+    parts.push('');
+    parts.push(opts.bodyText);
+    parts.push('');
+    parts.push(`--${boundary}`);
+    parts.push('Content-Type: text/html; charset="UTF-8"');
+    parts.push('Content-Transfer-Encoding: 7bit');
+    parts.push('');
+    parts.push(opts.bodyHtml);
+    parts.push('');
+    parts.push(`--${boundary}--`);
+
+    const message = `${headers.join('\r\n')}\r\n\r\n${parts.join('\r\n')}`;
+    const raw = Buffer.from(message)
+        .toString('base64')
+        .replace(/\+/g, '-')
+        .replace(/\//g, '_')
+        .replace(/=+$/, '');
+
+    try {
+        const res = await gmailClient.users.messages.send({
+            userId: 'me',
+            requestBody: { raw, threadId: opts.threadId },
+        });
+
+        // Clean up any Gmail-side drafts in this thread.
+        try {
+            const drafts = await gmailClient.users.drafts.list({ userId: 'me' });
+            const matching = (drafts.data.drafts || []).filter(
+                (d) => d.message?.threadId === opts.threadId && d.id
+            );
+            await Promise.all(
+                matching.map((d) =>
+                    gmailClient.users.drafts.delete({ userId: 'me', id: d.id! })
+                )
+            );
+        } catch (cleanupErr) {
+            console.warn('[Gmail] Draft cleanup after send failed:', cleanupErr);
+        }
+
+        // Wake the sync loop so the cache picks up the new message.
+        triggerSync();
+
+        return { messageId: res.data.id || undefined };
+    } catch (err) {
+        return { error: err instanceof Error ? err.message : String(err) };
+    }
+}
+
 export async function init() {
     console.log("Starting Gmail Sync (TS)...");
     console.log(`Will sync every ${SYNC_INTERVAL_MS / 1000} seconds.`);