---
id: T02
parent: S02
milestone: M019
provides: []
requires: []
affects: []
key_files: ["backend/routers/auth.py", "backend/main.py", "backend/auth.py", "backend/requirements.txt", "backend/tests/conftest.py", "backend/tests/test_auth.py"]
key_decisions: ["Replaced passlib with direct bcrypt — passlib incompatible with bcrypt>=4.1", "seed_invite_codes() as callable async function, not auto-invoked at startup", "Auth test fixture chain pattern: invite_code → registered_user → auth_headers"]
patterns_established: []
drill_down_paths: []
observability_surfaces: []
duration: ""
verification_result: "All 20 auth tests pass inside the chrysopedia-api Docker container on ub01. Existing public API tests confirm no auth regression (techniques and creators endpoints still return 200 without auth headers). The 7 pre-existing failures in test_public_api.py are unrelated to auth changes."
completed_at: 2026-04-03T21:53:53.329Z
blocker_discovered: false
---

# T02: Implemented auth API router with register/login/me/update-profile endpoints, seed invite code function, auth test fixtures, and 20 passing integration tests

> Implemented auth API router with register/login/me/update-profile endpoints, seed invite code function, auth test fixtures, and 20 passing integration tests

## What Happened
---
id: T02
parent: S02
milestone: M019
key_files:
  - backend/routers/auth.py
  - backend/main.py
  - backend/auth.py
  - backend/requirements.txt
  - backend/tests/conftest.py
  - backend/tests/test_auth.py
key_decisions:
  - Replaced passlib with direct bcrypt — passlib incompatible with bcrypt>=4.1
  - seed_invite_codes() as callable async function, not auto-invoked at startup
  - Auth test fixture chain pattern: invite_code → registered_user → auth_headers
duration: ""
verification_result: passed
completed_at: 2026-04-03T21:53:53.330Z
blocker_discovered: false
---

# T02: Implemented auth API router with register/login/me/update-profile endpoints, seed invite code function, auth test fixtures, and 20 passing integration tests

**Implemented auth API router with register/login/me/update-profile endpoints, seed invite code function, auth test fixtures, and 20 passing integration tests**

## What Happened

Created backend/routers/auth.py with four endpoints: POST /register (invite code validation, email uniqueness, bcrypt hashing, optional creator_slug linking), POST /login (JWT issuance), GET /me (auth required), PUT /me (display name/password update). Added seed_invite_codes() for default alpha invite code. Registered router in main.py. Updated conftest.py with auth model imports and three fixture chains (invite_code → registered_user → auth_headers). Wrote 20 integration tests covering happy paths, error paths (invalid/expired/exhausted codes, duplicate email, wrong password, invalid JWT), boundary conditions (single-use code decrement), malformed input validation, and public endpoint non-regression. Switched from passlib to direct bcrypt due to passlib incompatibility with bcrypt>=4.1.

## Verification

All 20 auth tests pass inside the chrysopedia-api Docker container on ub01. Existing public API tests confirm no auth regression (techniques and creators endpoints still return 200 without auth headers). The 7 pre-existing failures in test_public_api.py are unrelated to auth changes.

## Verification Evidence

| # | Command | Exit Code | Verdict | Duration |
|---|---------|-----------|---------|----------|
| 1 | `docker exec -e TEST_DATABASE_URL=... chrysopedia-api python -m pytest tests/test_auth.py -v` | 0 | ✅ pass | 12500ms |
| 2 | `docker exec -e TEST_DATABASE_URL=... chrysopedia-api python -m pytest tests/test_public_api.py -v` | 1 | ⚠️ 19 passed, 7 pre-existing failures (unrelated to auth) | 13000ms |


## Deviations

Replaced passlib[bcrypt] with direct bcrypt in auth.py — passlib is incompatible with bcrypt>=4.1 installed in the container. Tests run inside Docker container on ub01 rather than locally since the test database is only accessible within the Docker network.

## Known Issues

JWT InsecureKeyLengthWarning: default app_secret_key is 31 bytes, production should use 32+ bytes. 7 pre-existing test_public_api.py failures unrelated to auth.

## Files Created/Modified

- `backend/routers/auth.py`
- `backend/main.py`
- `backend/auth.py`
- `backend/requirements.txt`
- `backend/tests/conftest.py`
- `backend/tests/test_auth.py`


## Deviations
Replaced passlib[bcrypt] with direct bcrypt in auth.py — passlib is incompatible with bcrypt>=4.1 installed in the container. Tests run inside Docker container on ub01 rather than locally since the test database is only accessible within the Docker network.

## Known Issues
JWT InsecureKeyLengthWarning: default app_secret_key is 31 bytes, production should use 32+ bytes. 7 pre-existing test_public_api.py failures unrelated to auth.
