---
phase: 03-container-actions
plan: 02
type: execute
wave: 2
depends_on: ["03-01"]
files_modified: [n8n-workflow.json]
autonomous: true

must_haves:
  truths:
    - "Telegram Trigger receives callback_query updates from inline buttons"
    - "Callback queries route to dedicated handler branch"
    - "No-match suggestions show 'Did you mean X?' with inline button"
    - "User can accept suggestion without retyping command"
  artifacts:
    - path: "n8n-workflow.json"
      provides: "Callback query handling and suggestion flow"
      contains: "Route Update Type"
  key_links:
    - from: "Telegram Trigger"
      to: "Switch node (Route Update Type)"
      via: "message or callback_query routing"
      pattern: "callback_query"
    - from: "HTTP Request node"
      to: "Telegram Bot API"
      via: "sendMessage with inline_keyboard"
      pattern: "api.telegram.org.*sendMessage"
---

<objective>
Add callback query infrastructure and implement the "did you mean?" suggestion flow for no-match cases.

Purpose: Enable inline button interactions in Telegram. When a user's container name doesn't match exactly, show a suggestion with an inline button they can click to accept without retyping.

Output: Extended n8n workflow with callback handling and suggestion UI.
</objective>

<execution_context>
@/home/luc/.claude/get-shit-done/workflows/execute-plan.md
@/home/luc/.claude/get-shit-done/templates/summary.md
</execution_context>

<context>
@.planning/PROJECT.md
@.planning/ROADMAP.md
@.planning/STATE.md
@.planning/phases/03-container-actions/03-CONTEXT.md
@.planning/phases/03-container-actions/03-RESEARCH.md
@.planning/phases/03-container-actions/03-01-SUMMARY.md
@n8n-workflow.json
</context>

<tasks>

<task type="auto">
  <name>Task 1: Configure Telegram Trigger for callback queries</name>
  <files>n8n-workflow.json</files>
  <action>
Modify the Telegram Trigger node to receive both message and callback_query updates:

1. Find the Telegram Trigger node in the workflow
2. Update the "Updates" field to include both types:
   - In n8n UI: Updates → ["message", "callback_query"]
   - In JSON: "updates": ["message", "callback_query"]

3. Add a new Switch node immediately after the Telegram Trigger and before the authentication IF node:
   - Name: "Route Update Type"
   - Mode: Rules
   - Rules:
     - Rule 1: `{{ $json.message }}` is not empty → Output "message"
     - Rule 2: `{{ $json.callback_query }}` is not empty → Output "callback_query"

4. Restructure connections:
   - Telegram Trigger → Route Update Type
   - Route Update Type (message) → IF User Authenticated (existing flow)
   - Route Update Type (callback_query) → new callback handler branch

For callback_query authentication, add a new IF node:
   - Name: "IF Callback Authenticated"
   - Condition: `{{ $json.callback_query.from.id }}` equals authorized user ID
   - True: continue to callback processing
   - False: no connection (silent ignore per CONTEXT.md)
  </action>
  <verify>
1. Send a regular message → should route to message branch and work as before
2. Workflow should not error on receiving callback_query updates
  </verify>
  <done>Telegram Trigger receives callback_query, updates route to appropriate branches</done>
</task>

<task type="auto">
  <name>Task 2: Implement suggestion flow for no-match cases</name>
  <files>n8n-workflow.json</files>
  <action>
Replace the placeholder "No Match" branch from Plan 03-01 with a suggestion flow:

1. **Find Closest Match** (Code node):
   After determining zero exact matches, find the closest container name:
   ```javascript
   const query = $json.containerQuery.toLowerCase();
   const containers = $json.allContainers; // Full list from Docker
   const action = $json.action;
   const chatId = $json.chatId;

   // Simple closest match: longest common substring or starts-with
   let bestMatch = null;
   let bestScore = 0;

   for (const container of containers) {
     const name = container.Names[0].replace(/^\//, '').toLowerCase();
     // Score by: contains query, or query contains name, or Levenshtein-like
     let score = 0;
     if (name.includes(query)) score = query.length;
     else if (query.includes(name)) score = name.length * 0.8;
     else {
       // Simple: count matching characters
       for (let i = 0; i < Math.min(query.length, name.length); i++) {
         if (query[i] === name[i]) score++;
       }
     }
     if (score > bestScore) {
       bestScore = score;
       bestMatch = container;
     }
   }

   if (!bestMatch || bestScore < 2) {
     return { json: { hasSuggestion: false, query, action, chatId } };
   }

   const suggestedName = bestMatch.Names[0].replace(/^\//, '');
   const suggestedId = bestMatch.Id.substring(0, 12); // Short ID for callback_data

   return {
     json: {
       hasSuggestion: true,
       query,
       action,
       chatId,
       suggestedName,
       suggestedId,
       timestamp: Date.now()
     }
   };
   ```

2. **Check Suggestion** (IF node):
   - Condition: `{{ $json.hasSuggestion }}` equals true
   - True: send suggestion with button
   - False: send "no container found" message

3. **Build Suggestion Keyboard** (Code node, on True branch):
   ```javascript
   const { chatId, query, action, suggestedName, suggestedId, timestamp } = $json;

   // callback_data must be ≤64 bytes - use short keys
   // a=action (1 char: s=start, t=stop, r=restart)
   // c=container short ID
   // t=timestamp
   const actionCode = action === 'start' ? 's' : action === 'stop' ? 't' : 'r';
   const callbackData = JSON.stringify({ a: actionCode, c: suggestedId, t: timestamp });

   return {
     json: {
       chat_id: chatId,
       text: `No container '<b>${query}</b>' found.\n\nDid you mean <b>${suggestedName}</b>?`,
       parse_mode: "HTML",
       reply_markup: {
         inline_keyboard: [
           [
             { text: `Yes, ${action} ${suggestedName}`, callback_data: callbackData },
             { text: "Cancel", callback_data: '{"a":"x"}' }
           ]
         ]
       }
     }
   };
   ```

4. **Send Suggestion** (HTTP Request node):
   - Method: POST
   - URL: `https://api.telegram.org/bot{{ $credentials.telegramApi.accessToken }}/sendMessage`
   - Body Content Type: JSON
   - Body: `{{ JSON.stringify($json) }}`

5. **No Suggestion Message** (Telegram Send Message, on False branch):
   - Chat ID: `{{ $json.chatId }}`
   - Text: `No container found matching '{{ $json.query }}'`
  </action>
  <verify>
1. "stop nonexistent" → should show "No container found" (no suggestion if nothing close)
2. "stop plx" when "plex" exists → should show "Did you mean plex?" with button
3. Verify button appears and is clickable (don't click yet - callback handling in next task)
  </verify>
  <done>No-match cases show suggestion with inline button when a close match exists</done>
</task>

<task type="auto">
  <name>Task 3: Handle suggestion callback and execute action</name>
  <files>n8n-workflow.json</files>
  <action>
Add callback processing for suggestion buttons on the callback_query branch:

1. **Parse Callback Data** (Code node, after IF Callback Authenticated):
   ```javascript
   const callback = $json.callback_query;
   let data;
   try {
     data = JSON.parse(callback.data);
   } catch (e) {
     data = { a: 'x' }; // Treat parse error as cancel
   }

   const queryId = callback.id;
   const chatId = callback.message.chat.id;
   const messageId = callback.message.message_id;

   // Check 2-minute timeout
   const TWO_MINUTES = 120000;
   const isExpired = data.t && (Date.now() - data.t > TWO_MINUTES);

   // Decode action
   const actionMap = { s: 'start', t: 'stop', r: 'restart', x: 'cancel' };
   const action = actionMap[data.a] || 'cancel';

   return {
     json: {
       queryId,
       chatId,
       messageId,
       action,
       containerId: data.c || null,
       expired: isExpired,
       isSuggestion: true, // Single container suggestion, not batch
       isCancel: action === 'cancel'
     }
   };
   ```

2. **Route Callback** (Switch node):
   - Rule 1: `{{ $json.isCancel }}` equals true → Cancel branch
   - Rule 2: `{{ $json.expired }}` equals true → Expired branch
   - Rule 3: Default → Execute branch

3. **Cancel Handler** (Telegram node):
   - Operation: Answer Query
   - Query ID: `{{ $json.queryId }}`
   - Text: "Cancelled"
   - Show Alert: false

   Then HTTP Request to delete the suggestion message:
   - POST to `https://api.telegram.org/bot{{ $credentials.telegramApi.accessToken }}/deleteMessage`
   - Body: `{ "chat_id": {{ $json.chatId }}, "message_id": {{ $json.messageId }} }`

4. **Expired Handler**:
   - Answer callback query with "Confirmation expired. Please try again."
   - Delete the old message

5. **Execute from Callback** (Execute Command node):
   ```javascript
   const containerId = $json.containerId;
   const action = $json.action;
   const timeout = (action === 'stop' || action === 'restart') ? '?t=10' : '';
   const cmd = `curl -s -o /dev/null -w "%{http_code}" --unix-socket /var/run/docker.sock -X POST 'http://localhost/v1.47/containers/${containerId}/${action}${timeout}'`;
   return { json: { cmd, containerId, action, queryId: $json.queryId, chatId: $json.chatId, messageId: $json.messageId } };
   ```

6. **Parse and Respond** (Code node):
   - Check status code (204/304 = success)
   - Fetch container name for response message
   - Answer callback query
   - Delete suggestion message
   - Send success/failure message
  </action>
  <verify>
1. "stop plx" → suggestion appears → click "Yes, stop plex" → container stops, suggestion message deleted
2. "stop plx" → suggestion appears → click "Cancel" → suggestion deleted, "Cancelled" toast
3. "stop plx" → wait 2+ minutes → click button → shows "expired" message
  </verify>
  <done>Clicking suggestion button executes the action and cleans up the UI</done>
</task>

</tasks>

<verification>
End-to-end callback flow verification:

1. Regular messages still work (status, echo, actions from Plan 01)
2. "stop typo" when similar container exists → suggestion with button
3. Click "Yes" → action executes, success message appears
4. Click "Cancel" → suggestion dismissed
5. Wait 2 minutes, click → "expired" message
6. "stop nonexistent" with no close match → plain "not found" message

Import updated workflow and test all scenarios.
</verification>

<success_criteria>
- Telegram Trigger receives both messages and callback_queries
- Suggestion buttons appear for typos/close matches
- Clicking suggestion executes the action
- Cancel button dismisses suggestion
- Expired confirmations handled gracefully
- Old messages cleaned up after interaction
</success_criteria>

<output>
After completion, create `.planning/phases/03-container-actions/03-02-SUMMARY.md`
</output>