lib sources restructuring

src/lib/google/auth/client.ts

@@ -0,0 +1,121 @@
+import { browser } from '$app/environment';
+
+// Client-side only functions
+export const scopes = [
+	'https://www.googleapis.com/auth/gmail.send',
+	'https://www.googleapis.com/auth/userinfo.email',
+	'https://www.googleapis.com/auth/drive.readonly',
+	'https://www.googleapis.com/auth/spreadsheets.readonly'
+];
+
+/**
+ * Initialize Google Auth (placeholder for client-side)
+ */
+export async function initGoogleAuth(): Promise<void> {
+	if (!browser) return;
+	// Google Auth initialization is handled by the OAuth flow
+	// No initialization needed for our server-side approach
+}
+
+/**
+ * Get the Google Auth URL
+ * @returns URL for Google OAuth
+ */
+export function getAuthUrl(): string {
+	if (!browser) return '';
+	// This should be obtained from the server
+	return '/auth/google';
+}
+
+/**
+ * Check if an access token is valid
+ * @param accessToken - Google access token to validate
+ * @returns True if the token is valid
+ */
+export async function isTokenValid(accessToken: string): Promise<boolean> {
+	if (!browser) return false;
+	
+	try {
+		const response = await fetch(`https://www.googleapis.com/oauth2/v1/tokeninfo?access_token=${accessToken}`);
+		const data = await response.json();
+		
+		if (response.ok && data.expires_in && data.expires_in > 0) {
+			return true;
+		}
+		return false;
+	} catch (error) {
+		console.error('Error validating token:', error);
+		return false;
+	}
+}
+
+/**
+ * Refresh an access token using the refresh token
+ * @param refreshToken - Google refresh token
+ * @returns New access token or null if failed
+ */
+export async function refreshAccessToken(refreshToken: string): Promise<string | null> {
+	try {
+		const response = await fetch('/private/api/google/auth/refresh', {
+			method: 'POST',
+			headers: {
+				'Content-Type': 'application/json'
+			},
+			body: JSON.stringify({ refreshToken })
+		});
+		
+		if (response.ok) {
+			const data = await response.json();
+			return data.accessToken;
+		}
+		return null;
+	} catch (error) {
+		console.error('Error refreshing token:', error);
+		return null;
+	}
+}
+
+/**
+ * Get Google user information
+ * @param accessToken - Google access token
+ * @returns User info including email, name, and picture
+ */
+export async function getUserInfo(accessToken: string): Promise<{ email: string; name: string; picture: string } | null> {
+	try {
+		const response = await fetch('/private/api/google/auth/userinfo', {
+			headers: {
+				'Authorization': `Bearer ${accessToken}`
+			}
+		});
+		
+		if (response.ok) {
+			return await response.json();
+		}
+		return null;
+	} catch (error) {
+		console.error('Error fetching user info:', error);
+		return null;
+	}
+}
+
+/**
+ * Revoke a Google access token
+ * @param accessToken - Google access token to revoke
+ * @returns True if revocation was successful
+ */
+export async function revokeToken(accessToken: string): Promise<boolean> {
+	try {
+		const response = await fetch('/private/api/google/auth/revoke', {
+			method: 'POST',
+			headers: {
+				'Content-Type': 'application/json'
+			},
+			body: JSON.stringify({ accessToken })
+		});
+		
+		return response.ok;
+	} catch (error) {
+		console.error('Error revoking token:', error);
+		return false;
+	}
+}

src/lib/google/auth/server.ts

@@ -0,0 +1,57 @@
+import { google } from 'googleapis';
+import { env } from '$env/dynamic/private';
+
+// Define OAuth scopes for the Google APIs we need to access
+export const scopes = [
+	'https://www.googleapis.com/auth/gmail.send',
+	'https://www.googleapis.com/auth/userinfo.email',
+	'https://www.googleapis.com/auth/drive.readonly',
+	'https://www.googleapis.com/auth/spreadsheets.readonly'
+];
+
+/**
+ * Create a new OAuth2 client instance
+ * @returns Google OAuth2 client
+ */
+export function getOAuthClient() {
+	return new google.auth.OAuth2(
+		env.GOOGLE_CLIENT_ID,
+		env.GOOGLE_CLIENT_SECRET,
+		env.GOOGLE_REDIRECT_URI
+	);
+}
+
+/**
+ * Create a authentication URL for OAuth flow
+ * @returns Auth URL for Google OAuth
+ */
+export function createAuthUrl() {
+	return getOAuthClient().generateAuthUrl({
+		access_type: 'offline',
+		prompt: 'consent',
+		scope: scopes,
+		redirect_uri: env.GOOGLE_REDIRECT_URI
+	});
+}
+
+/**
+ * Exchange the authorization code for access and refresh tokens
+ * @param code - Authorization code from OAuth callback
+ * @returns Access and refresh tokens
+ */
+export async function exchangeCodeForTokens(code: string) {
+	const { tokens } = await getOAuthClient().getToken(code);
+	if (!tokens.refresh_token) throw new Error('No refresh_token returned');
+	return tokens;
+}
+
+/**
+ * Get an authenticated client using a refresh token
+ * @param refreshToken - Refresh token for authentication
+ * @returns Authenticated OAuth2 client
+ */
+export function getAuthenticatedClient(refreshToken: string) {
+	const oauth = getOAuthClient();
+	oauth.setCredentials({ refresh_token: refreshToken });
+	return oauth;
+}