# Micropub V1 Implementation Progress Report

**Date**: 2025-11-24
**Branch**: `feature/micropub-v1`
**Developer**: StarPunk Fullstack Developer Agent
**Status**: Phase 1 Complete (Token Security)

## Summary

Implementation of Micropub V1 has begun following the architecture defined in:
- `/home/phil/Projects/starpunk/docs/design/micropub-endpoint-design.md`
- `/home/phil/Projects/starpunk/docs/decisions/ADR-029-micropub-indieauth-integration.md`

Phase 1 (Token Security) is complete with all tests passing.

## Work Completed

### Phase 1: Token Security Migration (Complete)

#### 1. Database Migration (002_secure_tokens_and_authorization_codes.sql)

**Status**: ✅ Complete and tested

**Changes**:
- Dropped insecure `tokens` table (stored plain text tokens)
- Created secure `tokens` table with `token_hash` column (SHA256)
- Created `authorization_codes` table for IndieAuth token exchange
- Added appropriate indexes for performance
- Updated `SCHEMA_SQL` in `database.py` to match post-migration state

**Breaking Change**: All existing tokens are invalidated (required security fix)

#### 2. Token Management Module (starpunk/tokens.py)

**Status**: ✅ Complete with comprehensive test coverage

**Implemented Functions**:

**Token Generation & Hashing**:
- `generate_token()` - Cryptographically secure token generation
- `hash_token()` - SHA256 hashing for secure storage

**Access Token Management**:
- `create_access_token()` - Generate and store access tokens
- `verify_token()` - Verify token validity and return token info
- `revoke_token()` - Soft revocation support

**Authorization Code Management**:
- `create_authorization_code()` - Generate authorization codes
- `exchange_authorization_code()` - Exchange codes for token info with full validation

**Scope Management**:
- `validate_scope()` - Filter requested scopes to supported ones
- `check_scope()` - Check if granted scopes include required scope

**Security Features**:
- Tokens stored as SHA256 hashes (never plain text)
- Authorization codes are single-use with replay protection
- Optional PKCE support (code_challenge/code_verifier)
- Proper UTC datetime handling for expiry
- Parameter validation (client_id, redirect_uri, me must match)

#### 3. Test Suite (tests/test_tokens.py)

**Status**: ✅ 21/21 tests passing

**Test Coverage**:
- Token generation and hashing
- Access token creation and verification
- Token expiry and revocation
- Authorization code creation and exchange
- Replay attack protection
- Parameter validation (client_id, redirect_uri, me mismatch)
- PKCE validation (S256 method)
- Scope validation
- Empty scope authorization (per IndieAuth spec)

### Technical Issues Resolved

#### Issue 1: Database Schema Detection

**Problem**: Migration system incorrectly detected fresh databases as "legacy" or "current"

**Solution**: Updated `is_schema_current()` in `migrations.py` to check for:
- `authorization_codes` table existence
- `token_hash` column in tokens table

This ensures fresh databases skip migrations but legacy databases apply them.

#### Issue 2: Datetime Timezone Mismatch

**Problem**: Python's `datetime.now()` returns local time, but SQLite's `datetime('now')` returns UTC

**Solution**: Use `datetime.utcnow()` consistently for all expiry calculations

**Impact**: Authorization codes and tokens now properly expire based on UTC time

## What's Next

### Phase 2: Authorization & Token Endpoints (In Progress)

**Remaining Tasks**:

1. **Token Endpoint** (`/auth/token`) - REQUIRED FOR V1
   - Exchange authorization code for access token
   - Validate all parameters (code, client_id, redirect_uri, me)
   - Optional PKCE verification
   - Return token response per IndieAuth spec

2. **Authorization Endpoint** (`/auth/authorization`) - REQUIRED FOR V1
   - Display authorization form
   - Require admin session
   - Generate authorization code
   - Redirect with code

3. **Micropub Endpoint** (`/micropub`) - REQUIRED FOR V1
   - Bearer token authentication
   - Handle create action only (V1 scope)
   - Parse form-encoded and JSON requests
   - Create notes via existing `notes.py` CRUD
   - Return 201 with Location header
   - Query endpoints (config, source, syndicate-to)

4. **Integration Testing**
   - Test complete flow: authorization → token exchange → post creation
   - Test with real Micropub clients (Indigenous, Quill)

5. **Documentation Updates**
   - Update CHANGELOG.md (breaking change)
   - Increment version to 0.10.0
   - API documentation

## Architecture Decisions Made

No new architectural decisions were required. Implementation follows ADR-029 exactly.

## Questions for Architect

None at this time. Phase 1 implementation matches the design specifications.

## Files Changed

### New Files
- `migrations/002_secure_tokens_and_authorization_codes.sql` - Database migration
- `starpunk/tokens.py` - Token management module
- `tests/test_tokens.py` - Token test suite

### Modified Files
- `starpunk/database.py` - Updated SCHEMA_SQL for secure tokens
- `starpunk/migrations.py` - Updated schema detection logic

### Test Results
```
tests/test_tokens.py::test_generate_token PASSED
tests/test_tokens.py::test_hash_token PASSED
tests/test_tokens.py::test_hash_token_different_inputs PASSED
tests/test_tokens.py::test_create_access_token PASSED
tests/test_tokens.py::test_verify_token_invalid PASSED
tests/test_tokens.py::test_verify_token_expired PASSED
tests/test_tokens.py::test_revoke_token PASSED
tests/test_tokens.py::test_revoke_nonexistent_token PASSED
tests/test_tokens.py::test_create_authorization_code PASSED
tests/test_tokens.py::test_exchange_authorization_code PASSED
tests/test_tokens.py::test_exchange_authorization_code_invalid PASSED
tests/test_tokens.py::test_exchange_authorization_code_replay_protection PASSED
tests/test_tokens.py::test_exchange_authorization_code_client_id_mismatch PASSED
tests/test_tokens.py::test_exchange_authorization_code_redirect_uri_mismatch PASSED
tests/test_tokens.py::test_exchange_authorization_code_me_mismatch PASSED
tests/test_tokens.py::test_pkce_code_challenge_validation PASSED
tests/test_tokens.py::test_pkce_missing_verifier PASSED
tests/test_tokens.py::test_pkce_wrong_verifier PASSED
tests/test_tokens.py::test_validate_scope PASSED
tests/test_tokens.py::test_check_scope PASSED
tests/test_tokens.py::test_empty_scope_authorization PASSED

21 passed in 0.58s
```

## Commits

- `3b41029` - feat: Implement secure token management for Micropub
- `e2333cb` - chore: Add documentation-manager agent configuration

## Estimated Completion

Based on architect's estimates:
- **Phase 1**: 2-3 days (COMPLETE)
- **Phase 2-4**: 5-7 days remaining
- **Total V1**: 7-10 days

Current progress: ~25% complete (Phase 1 of 4 phases)

## Next Session Goals

1. Implement token endpoint (`/auth/token`)
2. Implement authorization endpoint (`/auth/authorization`)
3. Create authorization form template
4. Test authorization flow end-to-end

---

**Report Generated**: 2025-11-24
**Agent**: StarPunk Fullstack Developer
**Branch**: `feature/micropub-v1`
**Version Target**: 0.10.0