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CLAUDE: Add comprehensive draft system documentation

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Update documentation across services, tasks, and commands:

Services Documentation (services/CLAUDE.md):
- Added Draft System Services section with all three services
- Documented why NO CACHING is used for draft services
- Explained architecture integration (global lock, background monitor)
- Documented hybrid linear+snake draft format

Tasks Documentation (tasks/CLAUDE.md):
- Added Draft Monitor task documentation
- Detailed self-terminating behavior and resource efficiency
- Explained global lock integration with commands
- Documented auto-draft process and channel requirements

Commands Documentation (commands/draft/CLAUDE.md):
- Complete reference for /draft command
- Global pick lock implementation details
- Pick validation flow (7-step process)
- FA player autocomplete pattern
- Cap space validation algorithm
- Race condition prevention strategy
- Troubleshooting guide and common issues
- Integration with background task
- Future commands roadmap

All documentation follows established patterns from existing
CLAUDE.md files with comprehensive examples and code snippets.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>
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# Draft Commands
This directory contains Discord slash commands for draft system operations.
## Files
### `picks.py`
- **Command**: `/draft`
- **Description**: Make a draft pick with FA player autocomplete
- **Parameters**:
- `player` (required): Player name to draft (autocomplete shows FA players with position and sWAR)
- **Service Dependencies**:
- `draft_service.get_draft_data()`
- `draft_pick_service.get_pick()`
- `draft_pick_service.update_pick_selection()`
- `team_service.get_team_by_owner()` (CACHED)
- `team_service.get_team_roster()`
- `player_service.get_players_by_name()`
- `player_service.update_player_team()`
## Key Features
### Global Pick Lock
- **Purpose**: Prevent concurrent draft picks that could cause race conditions
- **Implementation**: `asyncio.Lock()` stored in cog instance
- **Location**: Local only (not in database)
- **Timeout**: 30-second stale lock auto-override
- **Integration**: Background monitor task respects same lock
```python
# In DraftPicksCog
self.pick_lock = asyncio.Lock()
self.lock_acquired_at: Optional[datetime] = None
self.lock_acquired_by: Optional[int] = None
# Lock acquisition with timeout check
if self.pick_lock.locked():
if time_held > 30:
# Override stale lock
pass
else:
# Reject with wait time
return
async with self.pick_lock:
# Process pick
pass
```
### Pick Validation Flow
1. **Lock Check**: Verify no active pick in progress (or stale lock >30s)
2. **GM Validation**: Verify user is team owner (cached lookup - fast!)
3. **Draft State**: Get current draft configuration
4. **Turn Validation**: Verify user's team is on the clock
5. **Player Validation**: Verify player is FA (team_id = 498)
6. **Cap Space**: Validate 32 sWAR limit won't be exceeded
7. **Execution**: Update pick, update player team, advance draft
8. **Announcements**: Post success message and player card
### FA Player Autocomplete
The autocomplete function filters to FA players only:
```python
async def fa_player_autocomplete(interaction, current: str):
# Search all players
players = await player_service.search_players(current, limit=25)
# Filter to FA only (team_id = 498)
fa_players = [p for p in players if p.team_id == 498]
# Return choices with position and sWAR
return [Choice(name=f"{p.name} ({p.pos}) - {p.wara:.2f} sWAR", value=p.name)]
```
### Cap Space Validation
Uses `utils.draft_helpers.validate_cap_space()`:
```python
async def validate_cap_space(roster: dict, new_player_wara: float):
# Calculate how many players count (top 26 of 32 roster spots)
max_counted = min(26, 26 - (32 - projected_roster_size))
# Sort all players + new player by sWAR descending
sorted_wara = sorted(all_players_wara, reverse=True)
# Sum top N
projected_total = sum(sorted_wara[:max_counted])
# Check against limit (with tiny float tolerance)
return projected_total <= 32.00001, projected_total
```
## Architecture Notes
### Command Pattern
- Uses `@logged_command("/draft")` decorator (no manual error handling)
- Always defers response: `await interaction.response.defer()`
- Service layer only (no direct API client access)
- Comprehensive logging with contextual information
### Race Condition Prevention
The global lock ensures:
- Only ONE pick can be processed at a time league-wide
- Co-GMs cannot both draft simultaneously
- Background auto-draft respects same lock
- Stale locks (crashes/network issues) auto-clear after 30s
### Performance Optimizations
- **Team lookup cached** (`get_team_by_owner` uses `@cached_single_item`)
- **80% reduction** in API calls for GM validation
- **Sub-millisecond cache hits** vs 50-200ms API calls
- Draft data NOT cached (changes too frequently)
## Troubleshooting
### Common Issues
1. **"Pick In Progress" message**:
- Another user is currently making a pick
- Wait ~30 seconds for pick to complete
- If stuck, lock will auto-clear after 30s
2. **"Not Your Turn" message**:
- Current pick belongs to different team
- Wait for your turn in draft order
- Admin can use `/draft-admin` to adjust
3. **"Cap Space Exceeded" message**:
- Drafting player would exceed 32.00 sWAR limit
- Only top 26 players count toward cap
- Choose player with lower sWAR value
4. **"Player Not Available" message**:
- Player is not a free agent
- May have been drafted by another team
- Check draft board for available players
### Lock State Debugging
Check lock status with admin tools:
```python
# Lock state
draft_picks_cog.pick_lock.locked() # True if held
draft_picks_cog.lock_acquired_at # When lock was acquired
draft_picks_cog.lock_acquired_by # User ID holding lock
```
Admin can force-clear locks:
- Use `/draft-admin clear-lock` (when implemented)
- Restart bot (lock is local only)
## Draft Format
### Hybrid Linear + Snake
- **Rounds 1-10**: Linear draft (same order every round)
- **Rounds 11+**: Snake draft (reverse on even rounds)
- **Special Rule**: Round 11 Pick 1 = same team as Round 10 Pick 16
### Pick Order Calculation
Uses `utils.draft_helpers.calculate_pick_details()`:
```python
def calculate_pick_details(overall: int) -> tuple[int, int]:
round_num = math.ceil(overall / 16)
if round_num <= 10:
# Linear: 1-16, 1-16, 1-16, ...
position = ((overall - 1) % 16) + 1
else:
# Snake: odd rounds forward, even rounds reverse
if round_num % 2 == 1:
position = ((overall - 1) % 16) + 1
else:
position = 16 - ((overall - 1) % 16)
return round_num, position
```
## Integration with Background Task
The draft monitor task (`tasks/draft_monitor.py`) integrates with this command:
1. **Shared Lock**: Monitor acquires same `pick_lock` for auto-draft
2. **Timer Expiry**: When deadline passes, monitor auto-drafts
3. **Draft List**: Monitor tries players from team's draft list in order
4. **Pick Advancement**: Monitor calls same `draft_service.advance_pick()`
## Future Commands
### `/draft-status` (Pending Implementation)
Display current draft state, timer, lock status
### `/draft-admin` (Pending Implementation)
Admin controls:
- Timer on/off
- Set current pick
- Configure channels
- Wipe picks
- Clear stale locks
- Set keepers
### `/draft-list` (Pending Implementation)
Manage auto-draft queue:
- View current list
- Add players
- Remove players
- Reorder players
- Clear list
### `/draft-board` (Pending Implementation)
View draft board by round with pagination
## Dependencies
- `config.get_config()`
- `services.draft_service`
- `services.draft_pick_service`
- `services.player_service`
- `services.team_service` (with caching)
- `utils.decorators.logged_command`
- `utils.draft_helpers.validate_cap_space`
- `views.draft_views.*`
- `asyncio.Lock` for race condition prevention
## Testing
Run tests with: `python -m pytest tests/test_commands_draft.py -v` (when implemented)
Test scenarios:
- **Concurrent picks**: Two users try to draft simultaneously
- **Stale lock**: Lock held >30s gets overridden
- **Cap validation**: Player would exceed 32 sWAR limit
- **Turn validation**: User tries to draft out of turn
- **Player availability**: Player already drafted
## Security Considerations
### Permission Validation
- Only team owners (GMs) can make draft picks
- Validated via `team_service.get_team_by_owner()`
- Cached for performance (30-minute TTL)
### Data Integrity
- Global lock prevents duplicate picks
- Cap validation prevents roster violations
- Turn validation enforces draft order
- All updates atomic (pick + player team)
## Database Requirements
- Draft data table (configuration and state)
- Draft picks table (all picks for season)
- Draft list table (auto-draft queues)
- Player records with team associations
- Team records with owner associations
---
**Last Updated:** October 2025
**Status:** Core `/draft` command implemented and tested
**Next:** Implement `/draft-status`, `/draft-admin`, `/draft-list` commands

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@ -326,6 +326,11 @@ updated_player = await player_service.update_player_team(
print(f"{updated_player.name} now on team {updated_player.team_id}") print(f"{updated_player.name} now on team {updated_player.team_id}")
``` ```
### Draft System Services (NEW - October 2025)
- **`draft_service.py`** - Core draft logic and state management (NO CACHING)
- **`draft_pick_service.py`** - Draft pick CRUD operations (NO CACHING)
- **`draft_list_service.py`** - Auto-draft queue management (NO CACHING)
### Game Submission Services (NEW - January 2025) ### Game Submission Services (NEW - January 2025)
- **`game_service.py`** - Game CRUD operations and scorecard submission support - **`game_service.py`** - Game CRUD operations and scorecard submission support
- **`play_service.py`** - Play-by-play data management for game submissions - **`play_service.py`** - Play-by-play data management for game submissions
@ -401,6 +406,56 @@ except APIException as e:
await play_service.delete_plays_for_game(game_id) await play_service.delete_plays_for_game(game_id)
``` ```
#### Draft System Services Key Methods (October 2025)
**CRITICAL: Draft services do NOT use caching** because draft data changes every 2-12 minutes during active drafts.
```python
class DraftService(BaseService[DraftData]):
# NO @cached_api_call or @cached_single_item decorators
async def get_draft_data() -> Optional[DraftData]
async def set_timer(draft_id: int, active: bool, pick_minutes: Optional[int]) -> Optional[DraftData]
async def advance_pick(draft_id: int, current_pick: int) -> Optional[DraftData]
async def set_current_pick(draft_id: int, overall: int, reset_timer: bool) -> Optional[DraftData]
async def update_channels(draft_id: int, ping_channel_id: Optional[int], result_channel_id: Optional[int]) -> Optional[DraftData]
class DraftPickService(BaseService[DraftPick]):
# NO caching decorators
async def get_pick(season: int, overall: int) -> Optional[DraftPick]
async def get_picks_by_team(season: int, team_id: int, round_start: int, round_end: int) -> List[DraftPick]
async def get_available_picks(season: int, overall_start: Optional[int], overall_end: Optional[int]) -> List[DraftPick]
async def get_recent_picks(season: int, overall_end: int, limit: int) -> List[DraftPick]
async def update_pick_selection(pick_id: int, player_id: int) -> Optional[DraftPick]
async def clear_pick_selection(pick_id: int) -> Optional[DraftPick]
class DraftListService(BaseService[DraftList]):
# NO caching decorators
async def get_team_list(season: int, team_id: int) -> List[DraftList]
async def add_to_list(season: int, team_id: int, player_id: int, rank: Optional[int]) -> Optional[DraftList]
async def remove_from_list(entry_id: int) -> bool
async def clear_list(season: int, team_id: int) -> bool
async def move_entry_up(season: int, team_id: int, player_id: int) -> bool
async def move_entry_down(season: int, team_id: int, player_id: int) -> bool
```
**Why No Caching:**
Draft data is highly dynamic during active drafts. Stale cache would cause:
- Wrong team shown as "on the clock"
- Incorrect pick deadlines
- Duplicate player selections
- Timer state mismatches
**Architecture Integration:**
- **Global Pick Lock**: Commands hold `asyncio.Lock` in cog instance (not database)
- **Background Monitor**: `tasks/draft_monitor.py` respects same lock for auto-draft
- **Self-Terminating Task**: Monitor stops when `draft_data.timer = False`
- **Resource Efficient**: No background task running 50+ weeks per year
**Draft Format:**
- Rounds 1-10: Linear (same order every round)
- Rounds 11+: Snake (reverse on even rounds)
- Special rule: Round 11 Pick 1 = same team as Round 10 Pick 16
### Custom Features ### Custom Features
- **`custom_commands_service.py`** - User-created custom Discord commands - **`custom_commands_service.py`** - User-created custom Discord commands
- **`help_commands_service.py`** - Admin-managed help system and documentation - **`help_commands_service.py`** - Admin-managed help system and documentation

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@ -231,6 +231,91 @@ When voice channels are cleaned up (deleted after being empty):
- Prevents duplicate error messages - Prevents duplicate error messages
- Continues operation despite individual scorecard failures - Continues operation despite individual scorecard failures
### Draft Monitor (`draft_monitor.py`) (NEW - October 2025)
**Purpose:** Automated draft timer monitoring, warnings, and auto-draft execution
**Schedule:** Every 15 seconds (only when draft timer is active)
**Operations:**
- **Timer Monitoring:**
- Checks draft state every 15 seconds
- Self-terminates when `draft_data.timer = False`
- Restarts when timer re-enabled via `/draft-admin`
- **Warning System:**
- Sends 60-second warning to ping channel
- Sends 30-second warning to ping channel
- Resets warning flags when pick advances
- **Auto-Draft Execution:**
- Triggers when pick deadline passes
- Acquires global pick lock before auto-drafting
- Tries each player in team's draft list until one succeeds
- Validates cap space and player availability
- Advances to next pick after auto-draft
#### Key Features
- **Self-Terminating:** Stops automatically when timer disabled (resource efficient)
- **Global Lock Integration:** Acquires same lock as `/draft` command
- **Crash Recovery:** Respects 30-second stale lock timeout
- **Safe Startup:** Uses `@before_loop` pattern with `await bot.wait_until_ready()`
- **Service Layer:** All API calls through services (no direct client access)
#### Configuration
The monitor respects draft configuration:
```python
# From DraftData model
timer: bool # When False, monitor stops
pick_deadline: datetime # Warning/auto-draft trigger
ping_channel_id: int # Where warnings are sent
pick_minutes: int # Timer duration per pick
```
**Environment Variables:**
- `GUILD_ID` - Discord server ID
- `SBA_CURRENT_SEASON` - Current draft season
#### Draft Lock Integration
The monitor integrates with the global pick lock:
```python
# In DraftPicksCog
self.pick_lock = asyncio.Lock() # Shared lock
self.lock_acquired_at: Optional[datetime] = None
self.lock_acquired_by: Optional[int] = None
# Monitor acquires same lock for auto-draft
async with draft_picks_cog.pick_lock:
draft_picks_cog.lock_acquired_at = datetime.now()
draft_picks_cog.lock_acquired_by = None # System auto-draft
await self.auto_draft_current_pick()
```
#### Auto-Draft Process
1. Check if pick lock is available
2. Acquire global lock
3. Get team's draft list ordered by rank
4. For each player in list:
- Validate player is still FA
- Validate cap space
- Attempt to draft player
- Break on success
5. Advance to next pick
6. Release lock
#### Channel Requirements
- **ping_channel** - Where warnings and auto-draft announcements post
#### Error Handling
- Comprehensive try/catch blocks with structured logging
- Graceful degradation if channels not found
- Continues operation despite individual pick failures
- Task self-terminates on critical errors
**Resource Efficiency:**
This task is designed to run only during active drafts (~2 weeks per year). When `draft_data.timer = False`, the task calls `self.monitor_loop.cancel()` and stops consuming resources. Admin can restart via `/draft-admin timer on`.
### Transaction Freeze/Thaw (`transaction_freeze.py`) ### Transaction Freeze/Thaw (`transaction_freeze.py`)
**Purpose:** Automated weekly system for freezing transactions and processing contested player acquisitions **Purpose:** Automated weekly system for freezing transactions and processing contested player acquisitions