---
phase: 08-inline-keyboard-infrastructure
plan: 01
subsystem: ui
tags: [telegram, inline-keyboard, n8n, callback-query, pagination]

# Dependency graph
requires:
  - phase: 07-socket-security
    provides: Docker socket proxy for container API access
provides:
  - Container list inline keyboard with pagination
  - Container submenu with state-based action buttons
  - Callback routing for select, list, action, noop
  - Message editing for in-place UI updates
affects: [08-02, 09-batch-operations]

# Tech tracking
tech-stack:
  added: []
  patterns: [inline-keyboard-via-http-request, callback-data-colon-format, editMessageText-navigation]

key-files:
  created: []
  modified: [n8n-workflow.json]

key-decisions:
  - "Callback data format: colon-separated (select:name, list:page, action:verb:name) for compact 64-byte compliance"
  - "6 containers per page for mobile readability"
  - "Running containers shown first with green circle icon"
  - "All callback transitions use editMessageText (no new messages)"

patterns-established:
  - "Answer callback FIRST: Always call answerCallbackQuery before processing to prevent loading indicator"
  - "Callback format: prefix:value with colon separator for new keyboard interactions"
  - "State-based keyboard: Build action buttons dynamically based on container state"

# Metrics
duration: 5min
completed: 2026-02-03
---

# Phase 8 Plan 1: Container List and Submenu Summary

**Inline keyboard container list with pagination and state-based submenu via Telegram callback queries**

## Performance

- **Duration:** 5 min
- **Started:** 2026-02-03T21:14:10Z
- **Completed:** 2026-02-03T21:18:59Z
- **Tasks:** 3
- **Files modified:** 1

## Accomplishments

- Container list inline keyboard with running/stopped grouping and pagination
- Container submenu with dynamic action buttons based on state (Start vs Stop/Restart)
- Callback routing infrastructure for select, list, action, and noop callbacks
- Direct container access via `/status plex` shows submenu immediately
- All transitions use editMessageText for clean in-place updates

## Task Commits

Each task was committed atomically:

1. **Task 1: Add Container List Inline Keyboard** - `f8d616e` (feat)
2. **Task 2: Add Container Submenu with Action Buttons** - `0148282` (feat)
3. **Task 3: Handle List Pagination Callbacks** - `393d368` (feat)

## Files Created/Modified

- `n8n-workflow.json` - Added 12 new nodes for keyboard infrastructure:
  - Build Container List Keyboard (code)
  - Send Container List (HTTP)
  - Check Single Container (IF)
  - Build Container Submenu Direct (code)
  - Send Container Submenu Direct (HTTP)
  - Answer Select Callback (HTTP)
  - Prepare Container Fetch (code)
  - Get Single Container (HTTP)
  - Build Container Submenu (code)
  - Send Container Submenu (HTTP)
  - Answer List/Noop Callback (HTTP)
  - Build Paginated List (code)
  - Edit Container List (HTTP)

## Decisions Made

- **Callback data format:** Used colon-separated format (`select:name`, `list:0`, `action:stop:plex`) instead of JSON to stay within 64-byte limit while remaining human-readable
- **Containers per page:** Set to 6 for optimal mobile display without scrolling
- **Icon convention:** Green circle for running, white circle for stopped (matches common Docker UI conventions)
- **Legacy callback support:** Preserved existing JSON callback format for backward compatibility with suggestion/batch flows

## Deviations from Plan

None - plan executed exactly as written.

## Issues Encountered

None - all nodes created and wired successfully on first attempt.

## User Setup Required

None - no external service configuration required.

## Next Phase Readiness

- Keyboard infrastructure complete
- Ready for Plan 02: Action execution through keyboard buttons
- `action:` callbacks routed but not yet handled (empty output in Route Callback)
- Logs and Update actions in submenu will need special handling (logs modal, update confirmation)

---
*Phase: 08-inline-keyboard-infrastructure*
*Completed: 2026-02-03*