OAuth Providers Setup

Complete guide to configuring OAuth authentication with Google, Facebook, GitHub, and HuggingFace for Open Navigator.

Overview

This application supports four OAuth providers for user authentication:

• 🔵 Google - Google Account authentication
• 🔵 Facebook - Facebook Login
• ⚫ GitHub - GitHub OAuth Apps
• 🤗 HuggingFace - HuggingFace OAuth

info

Each provider requires creating an OAuth application and configuring redirect URIs. Never commit secrets to git!

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🌐 Required Redirect URIs

For all providers, you need to configure these redirect URIs:

Local Development

http://localhost:8000/auth/callback/{provider}

Production (HTTPS required)

https://www.communityone.com/auth/callback/{provider}
https://your-space-name.hf.space/auth/callback/{provider}

Replace {provider} with: google, facebook, github, or huggingface

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🔵 Google OAuth Setup

Step 1: Create Google Cloud Project

1. Go to Google Cloud Console
2. Click "Select a project" → "NEW PROJECT"
3. Enter project name: open-navigator-for-engagement
4. Click "CREATE"

Step 2: Enable Google Identity Toolkit API

1. Navigate to APIs & Services → Library
2. Search for: Google Identity Toolkit API
3. Click "ENABLE"

Step 3: Configure OAuth Consent Screen

1. Go to APIs & Services → OAuth consent screen

2. Select "External" user type → Click "CREATE"

3. Fill in app information:

   • App name: Open Navigator
   • User support email: Your email
   • App domain: www.communityone.com
   • Developer contact: Your email

4. Click "SAVE AND CONTINUE"

5. Scopes page:

   • Click "ADD OR REMOVE SCOPES"
   • Select: userinfo.email, userinfo.profile, openid
   • Click "UPDATE" → "SAVE AND CONTINUE"

6. Test users (optional for development):

   • Add your Google account email
   • Click "SAVE AND CONTINUE"

Step 4: Create OAuth Credentials

1. Go to APIs & Services → Credentials

2. Click "+ CREATE CREDENTIALS" → "OAuth client ID"

3. Configure:

   • Application type: Web application
   • Name: Open Navigator Web App

4. Authorized JavaScript origins:

   http://localhost:5173
   http://localhost:8000
   https://www.communityone.com
   https://your-space.hf.space

5. Authorized redirect URIs:

   http://localhost:8000/auth/callback/google
   https://www.communityone.com/auth/callback/google
   https://your-space.hf.space/auth/callback/google

6. Click "CREATE"

7. Copy your credentials (you'll need these for environment variables):

   • Client ID: [long string].apps.googleusercontent.com
   • Client Secret: GOCSPX-[random string]

Step 5: Add to Environment Variables

Local (.env):

GOOGLE_CLIENT_ID=your-client-id-here.apps.googleusercontent.com
GOOGLE_CLIENT_SECRET=GOCSPX-your-secret-here

HuggingFace Spaces:

• Go to Space Settings → Variables and secrets
• Add as Repository secrets (not variables)

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🔵 Facebook OAuth Setup

Step 1: Create Facebook App

1. Go to Facebook Developers
2. Click "Create App"
3. Choose "Other" → "Next" → "Consumer" → "Next"
4. Enter details:
   • App name: Open Navigator
   • Contact email: Your email
5. Click "Create App"

Step 2: Add Facebook Login Product

1. In app dashboard, find "Add Products"
2. Find "Facebook Login" → Click "Set Up"
3. Choose "Web" platform
4. Enter site URL: http://localhost:5173
5. Click "Save" → "Continue"

Step 3: Configure OAuth Settings

1. Left sidebar: Click "Use cases → Authentication and account creation → Customize"

   OR: "Facebook Login → Settings"

2. Valid OAuth Redirect URIs (one per line):

   http://localhost:8000/auth/callback/facebook
   https://www.communityone.com/auth/callback/facebook
   https://your-space.hf.space/auth/callback/facebook

3. Enable these settings:

   • ✅ Client OAuth Login: ON
   • ✅ Web OAuth Login: ON
   • ❌ Native or desktop app: OFF

4. Click "Save Changes"

Step 4: Configure App Settings

1. Left sidebar: Click "App settings → Basic"

2. App Domains:

   localhost
   www.communityone.com
   your-space.hf.space

3. Privacy Policy URL:

   https://www.communityone.com/privacyfacebook.html

4. Click "Save Changes"

Step 5: Get App Credentials

1. Still in "App settings → Basic"
2. Copy your credentials:
   • App ID: 15-digit number
   • App Secret: Click "Show" → 32-character string

Step 6: Add to Environment Variables

Local (.env):

FACEBOOK_APP_ID=your-app-id-here
FACEBOOK_APP_SECRET=your-app-secret-here

HuggingFace Spaces:

• Add as Repository secrets

Step 7: App Mode

Development Mode (default):

• Only you can log in
• Good for testing

Live Mode (for production):

• Requires App Review
• Toggle in "App settings → Basic"

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⚫ GitHub OAuth Setup

Step 1: Create OAuth App

1. Go to GitHub Settings → Developer settings
2. Click "OAuth Apps" → "New OAuth App"

Step 2: Configure Application

1. Fill in details:

   • Application name: Open Navigator
   • Homepage URL: https://www.communityone.com
   • Authorization callback URL: http://localhost:8000/auth/callback/github

2. Click "Register application"

Step 3: Add Additional Callback URLs

GitHub only allows ONE callback URL per OAuth app. For multiple environments:

Option 1: Create separate apps for each environment

• Local Dev app → http://localhost:8000/auth/callback/github
• Production app → https://www.communityone.com/auth/callback/github

Option 2: Use production URL only

• Set: https://www.communityone.com/auth/callback/github
• For local dev, temporarily change to localhost during testing

Step 4: Get Credentials

1. On the OAuth app page:

   • Client ID: 20-character string
   • Client secrets: Click "Generate a new client secret"

2. Copy both values immediately (secret won't be shown again)

Step 5: Add to Environment Variables

Local (.env):

GITHUB_CLIENT_ID=your-client-id-here
GITHUB_CLIENT_SECRET=your-client-secret-here

HuggingFace Spaces:

• Add as Repository secrets

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🤗 HuggingFace OAuth Setup

Step 1: Create OAuth Application

1. Go to HuggingFace Settings → Applications
2. Click "Create a new application"

Step 2: Configure Application

1. Fill in details:

   • Application name: Open Navigator
   • Homepage URL: https://www.communityone.com
   • Scopes: openid profile email

2. Redirect URIs (add all):

   http://localhost:8000/auth/callback/huggingface
   https://www.communityone.com/auth/callback/huggingface
   https://your-space.hf.space/auth/callback/huggingface

3. Click "Create application"

Step 3: Get Credentials

1. On the application page:

   • Client ID: UUID format (8-4-4-4-12 characters)
   • Client Secret: Long random string starting with oauth_app_secret_

2. Copy both values

Step 4: Add to Environment Variables

Local (.env):

HUGGINGFACE_CLIENT_ID=your-client-id-here
HUGGINGFACE_CLIENT_SECRET=oauth_app_secret_your-secret-here

HuggingFace Spaces:

• Add as Repository secrets

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🔒 Environment Variables Reference

Local Development (.env)

Create a .env file in the project root:

# Database
DATABASE_URL=sqlite:///./data/users.db

# JWT Secret (generate with: openssl rand -hex 32)
JWT_SECRET_KEY=your-random-32-byte-hex-string

# Application URLs
FRONTEND_URL=http://localhost:5173
API_BASE_URL=http://localhost:8000

# Google OAuth
GOOGLE_CLIENT_ID=
GOOGLE_CLIENT_SECRET=

# Facebook OAuth
FACEBOOK_APP_ID=
FACEBOOK_APP_SECRET=

# GitHub OAuth
GITHUB_CLIENT_ID=
GITHUB_CLIENT_SECRET=

# HuggingFace OAuth
HUGGINGFACE_CLIENT_ID=
HUGGINGFACE_CLIENT_SECRET=

warning

Never commit .env to git! It's already in .gitignore.

Production (HuggingFace Spaces)

Add these as Repository secrets in Space Settings → Variables and secrets:

# CRITICAL: Use HTTPS for production URLs
API_BASE_URL=https://www.communityone.com
FRONTEND_URL=https://www.communityone.com

# Database
DATABASE_URL=sqlite:///./data/users.db

# JWT Secret (same as local for consistency, or generate new)
JWT_SECRET_KEY=your-random-32-byte-hex-string

# OAuth Credentials (same as local)
GOOGLE_CLIENT_ID=...
GOOGLE_CLIENT_SECRET=...
FACEBOOK_APP_ID=...
FACEBOOK_APP_SECRET=...
GITHUB_CLIENT_ID=...
GITHUB_CLIENT_SECRET=...
HUGGINGFACE_CLIENT_ID=...
HUGGINGFACE_CLIENT_SECRET=...

danger

Production URLs MUST use https:// - OAuth providers reject http:// for security.

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🧪 Testing OAuth Configuration

Local Testing

1. Start all services:

   ./start-all.sh

2. Open application: http://localhost:5173

3. Test each provider:

   • Click "Login" → Select provider
   • Authorize the app
   • Should redirect back with your profile

4. Check for errors in:

   • Browser console (F12)
   • API server logs
   • Network tab (watch redirect flow)

Production Testing

1. Deploy to HuggingFace Spaces (see HuggingFace Deployment Guide)

2. Add all environment secrets in Space settings

3. Test each provider at https://www.communityone.com

4. Common issues:

   • ❌ 400 Bad Request → Redirect URI not registered
   • ❌ redirect_uri_mismatch → Using http:// instead of https://
   • ❌ 401 Unauthorized → Wrong client secret or missing env vars

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🔧 Troubleshooting

"Redirect URI Mismatch"

Cause: OAuth provider doesn't recognize the callback URL

Fix:

1. Check exact URL in error message
2. Add that exact URL to provider settings
3. Ensure http:// vs https:// matches
4. No trailing slashes

"Invalid Client"

Cause: Wrong client ID or secret

Fix:

1. Verify credentials copied correctly
2. Check for extra spaces
3. Ensure environment variables are loaded
4. Restart server after changing .env

"Access Blocked"

Cause: App not verified or in development mode

Fix:

• Google: Add yourself as test user in OAuth consent screen
• Facebook: Use Development Mode for testing
• GitHub: No verification needed
• HuggingFace: No verification needed

Production HTTPS Issues

Cause: Using http:// URLs in production

Fix:

# In HuggingFace Spaces secrets, use HTTPS:
API_BASE_URL=https://www.communityone.com  # ✅ Correct
API_BASE_URL=http://www.communityone.com   # ❌ Wrong

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📚 Related Documentation

• Authentication Setup - Database and JWT configuration
• HuggingFace Deployment - Deploy to production
• Environment Configuration - Full environment setup

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🔐 Security Best Practices

1. Never commit secrets - Use .env files (gitignored)
2. Use HTTPS in production - Required by OAuth providers
3. Rotate secrets regularly - Generate new secrets periodically
4. Limit OAuth scopes - Only request necessary permissions
5. Use separate apps - Different OAuth apps for dev/staging/prod
6. Monitor usage - Check OAuth app dashboards for suspicious activity

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📝 Quick Reference

Provider	Setup URL	Redirect URI Format
Google	console.cloud.google.com	/auth/callback/google
Facebook	developers.facebook.com	/auth/callback/facebook
GitHub	github.com/settings/developers	/auth/callback/github
HuggingFace	huggingface.co/settings/applications	/auth/callback/huggingface

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tip

Start with one provider (e.g., Google) to verify the flow works, then add others incrementally.