# Domain Models

## Fantasy Draft System

| Model | Description |
|---|---|
| **League** | Top-level container; has one or more commissioners |
| **Season** | One iteration of a league. Status: `pre_draft` → `draft` → `active` → `completed` |
| **Team** | Belongs to a season; owned by a user (`ownerId` = UUID → `users.id`) |
| **Draft Slot** | Defines draft order for teams in a season |
| **Draft Pick** | Record of each pick made |
| **Draft Queue** | A team's pre-ordered wish list of participants |
| **Draft Timer** | Active countdown for the team currently on the clock |
| **Autodraft Settings** | Per-team config for automatic picking |

Season status drives UI visibility: draft order shown in `pre_draft`, draft controls active in `draft`, etc.

### Snake Draft Logic

- Draft slots define base order (1, 2, 3…)
- Odd rounds go 1→N; even rounds go N→1
- `currentPickNumber` on the season tracks position
- `server/timer.ts` handles autopicks when timer expires

## Sports Data System

| Model | Description |
|---|---|
| **Sport** | Base sport definition (e.g. NFL, NBA); type is `team` or `individual` |
| **Sports Season** | A specific rolling window of a sport (e.g. "Tennis June 2026") |
| **Season Participant** | A draftable roster entry for one sports season — links to a canonical Participant |
| **Season Template** | Reusable configuration for creating league seasons |
| **Season Sport** | Junction: links a fantasy season to the sports it covers |
| **Season Participant Result** | Final standings/scores for season participants |

## Canonical Layer (Qualifying-Points Sports)

Golf, tennis, and CS2 rolling windows share real-world data via a canonical layer. See `docs/agents/database.md` for the schema split.

| Model | Description |
|---|---|
| **Participant (canonical)** | Real-world player or team (Djokovic, NAVI) — shared across windows |
| **Tournament** | Real-world tournament (Wimbledon 2026) — shared across windows |
| **Tournament Result** | Final placement in a real-world tournament — entered once at `/admin/tournaments/:id`, fanned out to every linked window via `syncTournamentResults` |
| **Participant Surface Elo** | Canonical surface-specific Elo (tennis) — read by the tennis simulator |