---
phase: 01-tournament-engine
plan: 05
subsystem: api, database, template
tags: [go, crud, blind-structure, chip-set, payout, buyin, wizard, tournament-template, chi, libsql]

# Dependency graph
requires:
  - phase: 01-tournament-engine (Plan A)
    provides: Project scaffold, chi router, middleware, store layer
  - phase: 01-tournament-engine (Plan B)
    provides: Database schema with all building block tables
provides:
  - ChipSet CRUD service with denomination management
  - BlindStructure CRUD service with level validation
  - PayoutStructure CRUD service with bracket/tier nesting and 100% sum validation
  - BuyinConfig CRUD service with rake split validation
  - TournamentTemplate CRUD service with FK validation and expanded view
  - Structure wizard algorithm (geometric progression, denomination snapping, break insertion)
  - 4 built-in blind structures (Turbo, Standard, Deep Stack, WSOP-style)
  - Built-in payout structure with 4 entry-count brackets
  - 4 built-in buy-in configs with rake splits
  - 4 built-in tournament templates composing all above
  - Full REST API for all building blocks and templates
affects: [tournament-lifecycle, frontend-templates, clock-engine]

# Tech tracking
tech-stack:
  added: []
  patterns:
    - Service-per-entity CRUD pattern with *sql.DB injection
    - Transaction-based create/update with nested entity replacement
    - FK reference validation before template creation
    - Expanded view pattern (GetTemplate vs GetTemplateExpanded)
    - Seed migration with INSERT OR IGNORE for idempotent built-in data

key-files:
  created:
    - internal/template/chipset.go
    - internal/template/payout.go
    - internal/template/buyin.go
    - internal/template/tournament.go
    - internal/blind/structure.go
    - internal/blind/wizard.go
    - internal/blind/templates.go
    - internal/server/routes/templates.go
    - internal/store/migrations/005_builtin_templates.sql
    - internal/blind/wizard_test.go
    - internal/template/tournament_test.go
  modified:
    - internal/server/server.go

key-decisions:
  - "Seed data uses INSERT OR IGNORE with explicit IDs for idempotent re-runs"
  - "Wizard generates preview-only levels (not auto-saved) for TD review"
  - "BB ante used in WSOP-style template (separate from standard ante field)"
  - "Payout brackets must be contiguous ranges (no gaps between min/max entries)"

patterns-established:
  - "Service CRUD pattern: NewXService(db) with Create/Get/List/Update/Delete/Duplicate"
  - "Nested entity pattern: replace-all on update (delete children, re-insert)"
  - "Route registration: Register(chi.Router) method for modular route mounting"

requirements-completed: [BLIND-01, BLIND-02, BLIND-03, BLIND-04, BLIND-05, BLIND-06, CHIP-01, CHIP-02, CHIP-03, CHIP-04, FIN-01, FIN-02, FIN-05, FIN-06, FIN-10]

# Metrics
duration: 10min
completed: 2026-03-01
---

# Plan 05: Blind Structure + Chip Sets + Templates Summary

**Full CRUD for all building blocks (chip sets, blind structures, payouts, buy-ins) with 4 built-in tournament templates, structure wizard algorithm, and REST API endpoints**

## Performance

- **Duration:** 10 min
- **Started:** 2026-03-01T02:48:52Z
- **Completed:** 2026-03-01T02:58:52Z
- **Tasks:** 2
- **Files modified:** 12

## Accomplishments
- Complete CRUD services for all 5 building block types with validation, duplication, and builtin protection
- Structure wizard generates blind structures from high-level inputs (player count, chips, duration, denominations) using geometric progression with denomination snapping
- 4 built-in tournament templates (Turbo, Standard, Deep Stack, WSOP-style) with matching blind structures, buy-in configs, and shared payout structure
- Full REST API with admin-gated mutations and floor-accessible reads
- Comprehensive test suites for wizard (6 tests) and templates (7 tests), all passing

## Task Commits

Each task was committed atomically:

1. **Task E1: Building block CRUD and API routes** - `99545bd` (feat)
2. **Task E2: Built-in templates, seed data, wizard tests, template tests** - `7dbb4ca` (feat)

## Files Created/Modified
- `internal/template/chipset.go` - ChipSet CRUD service with denomination management
- `internal/template/payout.go` - PayoutStructure CRUD with bracket/tier nesting and 100% sum validation
- `internal/template/buyin.go` - BuyinConfig CRUD with rake split validation
- `internal/template/tournament.go` - TournamentTemplate CRUD with FK validation, expanded view, SaveAsTemplate
- `internal/blind/structure.go` - BlindStructure CRUD with level validation (contiguous positions, SB < BB)
- `internal/blind/wizard.go` - Structure wizard: geometric progression, denomination snapping, break insertion, chip-up markers
- `internal/blind/templates.go` - Built-in level definitions (Turbo, Standard, Deep Stack, WSOP-style)
- `internal/server/routes/templates.go` - REST API handlers for all building blocks and templates
- `internal/store/migrations/005_builtin_templates.sql` - Seed data for 4 blind structures, 1 payout structure, 4 buy-in configs, 4 tournament templates
- `internal/blind/wizard_test.go` - Wizard tests: standard, player counts, denomination alignment, short/long, invalid inputs
- `internal/template/tournament_test.go` - Template tests: create, invalid FK, expanded, save-as, duplicate, delete-builtin, list
- `internal/server/server.go` - Wired template routes into protected API group

## Decisions Made
- Seed data uses INSERT OR IGNORE with explicit integer IDs for idempotent migration re-runs
- Wizard generates preview-only levels (not auto-saved) so the TD can review and adjust before saving
- WSOP-style blind structure uses BB ante (separate field from standard ante) starting at level 4
- Payout bracket validation enforces contiguous entry count ranges with no gaps
- All built-in entities use is_builtin=1 flag -- cannot be deleted but can be duplicated

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
- Pre-existing test failure in `cmd/leaf/main_test.go` (missing `clockRegistry` parameter from Plan D) -- out of scope, not caused by this plan

## User Setup Required
None - no external service configuration required.

## Next Phase Readiness
- All building blocks have full CRUD with API endpoints -- ready for frontend template management UI
- Tournament templates compose building blocks by reference -- ready for tournament creation flow
- Structure wizard is functional -- ready for frontend wizard UI
- Built-in templates exist on first boot -- ready for template-first tournament creation

## Self-Check: PASSED

All 11 created files verified on disk. Both task commits (99545bd, 7dbb4ca) found in git log.

---
*Phase: 01-tournament-engine*
*Completed: 2026-03-01*