# User Endpoint Refactoring - Changes Summary

## Overview
This refactoring removes the redundant `/auth/me` endpoint and consolidates user profile retrieval through the proper `/users/{user_id}` endpoint, improving API consistency and reducing code duplication.

## Problem Analysis
The system had two endpoints returning similar user information:
- `/auth/me` - Returned current user from JWT token
- `/users/{user_id}` - Returned user by ID

This created redundancy and confusion in the API structure.

## Changes Made

### 1. Backend Changes
**File:** `services/auth/app/api/auth_operations.py`
- **Removed:** `/auth/me` endpoint (lines with `@router.get("/me")`)
- **Impact:** The endpoint no longer exists in the auth service
- **Reason:** Redundant with `/users/{user_id}` endpoint

### 2. Frontend Changes
**File:** `frontend/src/api/services/user.ts`
- **Updated:** `getCurrentUser()` method
- **Before:** Called `/users/me` 
- **After:** Gets current user ID from auth store and calls `/users/{user_id}`
- **Implementation:**
  ```typescript
  async getCurrentUser(): Promise<UserResponse> {
    // Get current user ID from auth store
    const authStore = useAuthStore.getState();
    const userId = authStore.user?.id;
    
    if (!userId) {
      throw new Error('No authenticated user found');
    }
    
    return apiClient.get<UserResponse>(`${this.baseUrl}/${userId}`);
  }
  ```

### 3. API Client Changes
**File:** `frontend/src/api/client/apiClient.ts`
- **Updated:** Removed `/auth/me` from `noTenantEndpoints` array
- **Before:** `/auth/me` was listed as a user-level endpoint
- **After:** Removed since the endpoint no longer exists
- **Note:** `/auth/me/onboarding` remains as it's a different endpoint

## API Gateway Behavior
The gateway routing remains unchanged and works correctly:
- Frontend calls `/users/{user_id}` 
- Gateway forwards to `/api/v1/auth/users/{user_id}` in auth service
- Auth service returns user data via `get_user_by_id()` endpoint

## Benefits
1. **Consistency:** Single source of truth for user data
2. **Simplicity:** Removes redundant endpoint
3. **Maintainability:** Clearer API structure
4. **Performance:** No duplicate data fetching logic

## Testing
- Created verification script to ensure all changes are syntactically correct
- Verified that `/auth/me` endpoint has been removed
- Confirmed that UserService correctly uses user ID from auth store
- Validated that API client no longer references the removed endpoint

## Migration Notes
- **Breaking Change:** Any direct calls to `/auth/me` will now return 404
- **Replacement:** Use `/users/{user_id}` with the current user's ID
- **Frontend:** All existing frontend code using `useCurrentUser()` continues to work
- **Backend:** Other services should use `/users/{user_id}` for user data

## Files Modified
1. `services/auth/app/api/auth_operations.py` - Removed endpoint
2. `frontend/src/api/services/user.ts` - Updated service method
3. `frontend/src/api/client/apiClient.ts` - Updated endpoint configuration

## Verification
All changes have been verified with the verification script and pass syntax checks.