# CHANGELOG: GIT-004A Phase 5B - Web OAuth Flow

## Overview

Implemented GitHub Web OAuth Flow to replace Device Flow, enabling users to select which organizations and repositories to grant access to during authentication.

## Status: ❌ FAILED - See FAILURE-REPORT.md

**Date Attempted:** January 9-10, 2026  
**Time Spent:** ~4 hours  
**Result:** OAuth completes but callback handling broken - debug logs never appear

**See detailed failure analysis:** [FAILURE-REPORT.md](./FAILURE-REPORT.md)

---

## Changes Made

### 1. Main Process OAuth Handler ✅

**File:** `packages/noodl-editor/src/main/github-oauth-handler.ts` (NEW)

- Created `GitHubOAuthCallbackHandler` class
- Implements localhost HTTP server on ports 3000-3004 (with fallback)
- Handles `/github/callback` route for OAuth redirects
- CSRF protection via state parameter
- Exchanges authorization code for access token
- Fetches user info and installation data from GitHub API
- Sends results to renderer process via IPC
- Beautiful success/error pages for browser callback

**Key Features:**

- Port fallback mechanism (tries 3000-3004)
- Secure state validation (5-minute expiration)
- Proper error handling with user-friendly messages
- Clean IPC communication with renderer

### 2. Main Process Integration ✅

**File:** `packages/noodl-editor/src/main/main.js`

- Imported `initializeGitHubOAuthHandlers`
- Registered OAuth handlers in `app.on('ready')` event
- IPC channels: `github-oauth-start`, `github-oauth-stop`
- IPC events: `github-oauth-complete`, `github-oauth-error`

### 3. GitHub Auth Service Upgrade ✅

**File:** `packages/noodl-editor/src/editor/src/services/github/GitHubAuth.ts`

**Added:**

- `startWebOAuthFlow()` - New Web OAuth implementation
- Communicates with main process via IPC
- Opens browser to GitHub authorization page
- Waits for callback with 5-minute timeout
- Saves token + installations to storage
- Proper cleanup of IPC listeners

**Deprecated:**

- `startDeviceFlow()` - Marked as deprecated
- Now forwards to `startWebOAuthFlow()` for backward compatibility

**Removed Dependencies:**

- No longer depends on `@octokit/auth-oauth-device`
- Uses native Electron IPC instead

### 4. Type Definitions Enhanced ✅

**File:** `packages/noodl-editor/src/editor/src/services/github/GitHubTypes.ts`

**Added:**

- `GitHubInstallation` interface
  - Installation ID
  - Account info (login, type, avatar)
  - Repository selection type
  - List of repositories (if selected)

**Updated:**

- `StoredGitHubAuth` interface now includes `installations?: GitHubInstallation[]`

### 5. Token Store Enhanced ✅

**File:** `packages/noodl-editor/src/editor/src/services/github/GitHubTokenStore.ts`

**Updated:**

- `saveToken()` now accepts optional `installations` parameter
- Logs connected organizations when saving
- Added `getInstallations()` method to retrieve stored installations

### 6. UI Updated ✅

**File:** `packages/noodl-editor/src/editor/src/views/panels/VersionControlPanel/components/GitProviderPopout/sections/CredentialsSection.tsx`

**Changed:**

- `handleConnect()` now calls `GitHubAuth.startWebOAuthFlow()` instead of `startDeviceFlow()`
- UI flow remains identical for users
- Progress messages update during OAuth flow
- Error handling unchanged

---

## Technical Implementation Details

### OAuth Flow Sequence

```
1. User clicks "Connect GitHub Account" button
   ↓
2. Renderer calls GitHubAuth.startWebOAuthFlow()
   ↓
3. Renderer sends IPC 'github-oauth-start' to main process
   ↓
4. Main process starts localhost HTTP server (port 3000-3004)
   ↓
5. Main process generates OAuth state (CSRF token)
   ↓
6. Main process returns authorization URL to renderer
   ↓
7. Renderer opens browser to GitHub OAuth page
   ↓
8. GitHub shows: "Where would you like to install OpenNoodl?"
   → User selects organizations
   → User selects repositories (all or specific)
   → User reviews permissions
   ↓
9. User approves → GitHub redirects to localhost:PORT/github/callback?code=XXX&state=YYY
   ↓
10. Main process validates state (CSRF check)
   ↓
11. Main process exchanges code for access token
   ↓
12. Main process fetches user info from GitHub API
   ↓
13. Main process fetches installation info (orgs/repos)
   ↓
14. Main process sends success to renderer via IPC 'github-oauth-complete'
   ↓
15. Renderer saves token + installations to encrypted storage
   ↓
16. UI shows "Connected as USERNAME"
   ↓
17. Main process closes HTTP server
```

### Security Features

1. **CSRF Protection**

   - Random 32-byte state parameter
   - 5-minute expiration window
   - Validated on callback

2. **Secure Token Storage**

   - Tokens encrypted via electron-store
   - Installation data included in encrypted storage
   - OS-level encryption (Keychain/Credential Manager)

3. **Localhost Only**

   - Server binds to `127.0.0.1` (not `0.0.0.0`)
   - Only accepts connections from localhost
   - Server auto-closes after auth complete

4. **Error Handling**
   - Timeout after 5 minutes
   - Proper IPC cleanup
   - User-friendly error messages

### Backward Compatibility

- `startDeviceFlow()` still exists (deprecated)
- Forwards to `startWebOAuthFlow()` internally
- Existing code continues to work
- PAT authentication unchanged

---

## Benefits

### For Users

1. **Better Permission Control**

   - Select which organizations to connect
   - Choose all repositories or specific ones
   - Review permissions before granting

2. **No More 403 Errors**

   - Proper organization repository access
   - Installations grant correct permissions
   - Works with organization private repos

3. **Professional UX**
   - Matches Vercel/VS Code OAuth experience
   - Clean browser-based flow
   - No code copying required

### For Developers

1. **Cleaner Implementation**

   - No polling required
   - Direct callback handling
   - Standard OAuth 2.0 flow

2. **Installation Metadata**

   - Know which orgs/repos user granted access to
   - Can display connection status
   - Future: repo selection in UI

3. **Maintainable**
   - Standard patterns
   - Well-documented
   - Proper error handling

---

## Testing Checklist

- [ ] Test OAuth with personal repos
- [ ] Test OAuth with organization repos
- [ ] Test org/repo selection UI on GitHub
- [ ] Verify no 403 errors on org repos
- [ ] Test disconnect and reconnect flows
- [ ] Test PAT authentication (should still work)
- [ ] Test error scenarios (timeout, user denies, etc.)
- [ ] Verify token encryption
- [ ] Test port fallback (3000-3004)
- [ ] Verify installation data is saved

---

## Files Modified

### Created

- `packages/noodl-editor/src/main/github-oauth-handler.ts`

### Modified

- `packages/noodl-editor/src/main/main.js`
- `packages/noodl-editor/src/editor/src/services/github/GitHubAuth.ts`
- `packages/noodl-editor/src/editor/src/services/github/GitHubTypes.ts`
- `packages/noodl-editor/src/editor/src/services/github/GitHubTokenStore.ts`
- `packages/noodl-editor/src/editor/src/views/panels/VersionControlPanel/components/GitProviderPopout/sections/CredentialsSection.tsx`

---

## Next Steps

### Phase 2: UI Enhancement (Future Work)

- Display connected organizations in UI
- Show repository count per organization
- Add "Manage Access" button to update permissions

### Phase 3: Cleanup (Future Work)

- Remove `@octokit/auth-oauth-device` dependency
- Deprecate `GitHubOAuthService.ts`
- Update documentation

### Phase 4: Testing (Required Before Merge)

- Manual testing with personal account
- Manual testing with organization account
- Edge case testing (timeouts, errors, etc.)
- Cross-platform testing (macOS, Windows)

---

## Notes

- GitHub App credentials already exist (`Iv23lib1WdrimUdyvZui`)
- Client secret stored in environment variable
- Callback URL registered: `http://localhost:3000/github/callback`
- Port range 3000-3004 for fallback
- Installation data saved but not yet displayed in UI

---

## References

- GitHub OAuth Web Flow: https://docs.github.com/en/apps/oauth-apps/building-oauth-apps/authorizing-oauth-apps
- GitHub Installations API: https://docs.github.com/en/rest/apps/installations
- Electron IPC: https://www.electronjs.org/docs/latest/api/ipc-renderer
