---
phase: 02-rooms-and-tasks
plan: 04
subsystem: ui
tags: [flutter, riverpod, templates, bottom-sheet, room-creation, german-localization, task-seeding]

# Dependency graph
requires:
  - phase: 02-rooms-and-tasks
    provides: TaskTemplate class, roomTemplates const map, detectRoomType function, RoomFormScreen, TaskActions.createTask
provides:
  - TemplatePickerSheet bottom sheet with checklist UI for task templates
  - showTemplatePickerSheet helper for modal display with DraggableScrollableSheet
  - Template flow integration in room creation (detect type, show picker, create tasks)
  - 4 German localization keys for template picker UI
affects: [02-rooms-and-tasks, 03-daily-plan]

# Tech tracking
tech-stack:
  added: []
  patterns: [post-create-modal-flow, draggable-scrollable-checklist, anchor-day-from-interval-type]

key-files:
  created:
    - lib/features/templates/presentation/template_picker_sheet.dart
  modified:
    - lib/features/rooms/presentation/room_form_screen.dart
    - lib/l10n/app_de.arb
    - lib/l10n/app_localizations.dart
    - lib/l10n/app_localizations_de.dart

key-decisions:
  - "Template picker uses StatefulWidget (not Consumer) receiving data via constructor for testability and simplicity"
  - "showModalBottomSheet with DraggableScrollableSheet for long template lists that may exceed screen height"
  - "Room creation navigates to /rooms/$roomId (context.go) instead of context.pop to show the new room immediately"
  - "Calendar-anchored intervals (monthly/quarterly/yearly) set anchorDay to today's day-of-month; day-count intervals set null"

patterns-established:
  - "Post-create modal flow: save entity, detect type, show optional modal, act on result, navigate"
  - "DraggableScrollableSheet for checklists with variable item counts"
  - "anchorDay derivation from IntervalType switch for template-created tasks"

requirements-completed: [TMPL-01, TMPL-02]

# Metrics
duration: 3min
completed: 2026-03-15
---

# Phase 2 Plan 04: Template Selection Flow Summary

**Template picker bottom sheet with German task checklist integrated into room creation, detecting 14 room types and seeding tasks from selected templates**

## Performance

- **Duration:** 3 min
- **Started:** 2026-03-15T21:15:33Z
- **Completed:** 2026-03-15T21:19:16Z
- **Tasks:** 2
- **Files modified:** 5

## Accomplishments
- TemplatePickerSheet bottom sheet displaying task templates as CheckboxListTile items with frequency and effort labels, all unchecked by default
- Room creation flow wired: save room, detect room type from name, show template picker if match, create selected templates as tasks, navigate to room
- 4 German localization keys for template picker title, skip, add, and selected count
- Calendar-anchored anchor day calculation for monthly/quarterly/yearly template tasks

## Task Commits

Each task was committed atomically:

1. **Task 1: Create template picker bottom sheet** - `903567e` (feat)
2. **Task 2: Wire template flow into room creation** - `03f531f` (feat)

## Files Created/Modified
- `lib/features/templates/presentation/template_picker_sheet.dart` - TemplatePickerSheet StatefulWidget with DraggableScrollableSheet, CheckboxListTile checklist, skip/add buttons; showTemplatePickerSheet helper
- `lib/features/rooms/presentation/room_form_screen.dart` - Modified _save() for new rooms: detectRoomType, showTemplatePickerSheet, _createTasksFromTemplates, _anchorDayForType; added template/task imports
- `lib/l10n/app_de.arb` - 4 new template picker localization keys
- `lib/l10n/app_localizations.dart` - Abstract getters/methods for 4 template picker keys
- `lib/l10n/app_localizations_de.dart` - German implementations for 4 template picker keys

## Decisions Made
- Used StatefulWidget (not ConsumerWidget) for TemplatePickerSheet since it receives all data via constructor and has no provider dependencies
- Used showModalBottomSheet with DraggableScrollableSheet (isScrollControlled: true) to handle room types with many templates (up to 5-6 items)
- Changed room creation navigation from context.pop() to context.go('/rooms/$roomId') so users see their new room immediately after creation
- Set anchorDay based on IntervalType: monthly/quarterly/yearly get today's day-of-month, day-count intervals get null

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered
None.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness
- Template selection flow complete, delivering TMPL-01 and TMPL-02 requirements
- All 14 room types accessible via detectRoomType with alias matching
- Ready for Plan 02-05 (final integration/polish)
- All 59 existing tests continue to pass
- Full dart analyze clean on lib/ source code

## Self-Check: PASSED

All 5 key files verified present. Both task commits (903567e, 03f531f) verified in git log. 59 tests passing. dart analyze clean on lib/.

---
*Phase: 02-rooms-and-tasks*
*Completed: 2026-03-15*