fix(google-chat): add OAuth provider registration to auth.ts

apps/sim/lib/auth/auth.ts

@@ -486,6 +486,7 @@ export const auth = betterAuth({
         'google-forms',
         'google-vault',
         'google-groups',
+        'google-chat',
         'vertex-ai',
         'github-repo',
         'microsoft-dataverse',
@@ -1150,6 +1151,47 @@ export const auth = betterAuth({
           },
         },
 
+        {
+          providerId: 'google-chat',
+          clientId: env.GOOGLE_CLIENT_ID as string,
+          clientSecret: env.GOOGLE_CLIENT_SECRET as string,
+          discoveryUrl: 'https://accounts.google.com/.well-known/openid-configuration',
+          accessType: 'offline',
+          scopes: [
+            'https://www.googleapis.com/auth/userinfo.email',
+            'https://www.googleapis.com/auth/userinfo.profile',
+            'https://www.googleapis.com/auth/chat.spaces.readonly',
+            'https://www.googleapis.com/auth/chat.messages.create',
+          ],
+          prompt: 'consent',
+          redirectURI: `${getBaseUrl()}/api/auth/oauth2/callback/google-chat`,
+          getUserInfo: async (tokens) => {
+            try {
+              const response = await fetch('https://openidconnect.googleapis.com/v1/userinfo', {
+                headers: { Authorization: `Bearer ${tokens.accessToken}` },
+              })
+              if (!response.ok) {
+                logger.error('Failed to fetch Google user info', { status: response.status })
+                throw new Error(`Failed to fetch Google user info: ${response.statusText}`)
+              }
+              const profile = await response.json()
+              const now = new Date()
+              return {
+                id: `${profile.sub}-${crypto.randomUUID()}`,
+                name: profile.name || 'Google User',
+                email: profile.email,
+                image: profile.picture || undefined,
+                emailVerified: profile.email_verified || false,
+                createdAt: now,
+                updatedAt: now,
+              }
+            } catch (error) {
+              logger.error('Error in Google getUserInfo', { error })
+              throw error
+            }
+          },
+        },
+
         {
           providerId: 'vertex-ai',
           clientId: env.GOOGLE_CLIENT_ID as string,