== Claude Code Session: auth-refactor ==
== Started: 2026-03-20 10:00 ==

User: I need to refactor the authentication module. Can you read src/auth.ts and tell me what we're working with?

Claude: I'll read the file now.

[Read src/auth.ts]

The auth module has the following structure:
- authenticateUser(email, password) -> returns AuthResult
- validateSession(token) -> returns boolean
- generateToken(userId, role) -> returns JWT string
- The JWT_SECRET is stored in an environment variable
- Token expiration is set to 1 hour (3600 seconds)
- The pool uses max 10 connections

The main concern I see is that authenticateUser uses a SQL query with string interpolation for the email parameter, which is a SQL injection vulnerability.

User: Right. I also want to add refresh tokens. Can you check the database schema?

Claude: [Read src/schema.sql]

The current schema has:
- users table: id, email, password_hash, role, created_at
- sessions table: id, user_id, token, expires_at
- No refresh_tokens table exists yet

I suggest adding a refresh_tokens table with: id, user_id, token_hash, expires_at, created_at, revoked_at.

User: Good plan. Let me also check the test file.

Claude: [Read tests/auth.test.ts]

The test file has:
- 6 test cases covering authenticateUser
- 3 test cases covering validateSession
- 0 test cases for token refresh (since it doesn't exist yet)
- Tests use a mock database with jest.mock('./database')
- The mock pool has max connections set to match production (10)

User: OK, I need to stop for today. Summary:
1. auth.ts has SQL injection bug to fix
2. Need to add refresh_tokens table
3. Tests need updating for refresh flow
4. Pool max connections is 10

Claude: Good summary. When you resume, we should start with the schema migration for refresh_tokens, then update auth.ts to fix SQL injection and add refresh token logic, and finally update the tests.

== Session suspended: 2026-03-20 11:30 ==

== EXTERNAL CHANGES MADE WHILE SESSION WAS SUSPENDED ==
== (These happened outside Claude Code) ==
==
== 1. A teammate fixed the SQL injection in src/auth.ts (parameterized query)
== 2. A teammate increased pool max connections from 10 to 25 in src/auth.ts
== 3. The schema was updated: sessions table was RENAMED to active_sessions
== 4. tests/auth.test.ts was updated with 2 new test cases for input validation
== 5. A new file src/token-utils.ts was created with helper functions
== 6. package.json was updated: added jsonwebtoken@9.0.2 (was 8.5.1)
==

== Session resumed: 2026-03-21 09:00 ==
