questions-form（问题表）

Questions Form

Present multiple clarifying questions as a Telegram inline-button form. All questions appear at once; the user answers in any order, then submits.

When to Use

• You need 2 or more clarifying questions answered before proceeding
• Questions have enumerable options (with optional free-text fallback)
• The channel is Telegram

Do not use this pattern for a single yes/no question — just send one message with buttons for that.

Form Protocol

Step 1: Compose the Form

Define each question internally as an object:

{ id: "type",     text: "What type of project?", options: ["Web App", "Mobile", "API"] }
{ id: "timeline", text: "What is your timeline?", options: ["This week", "This month", "No rush"] }
{ id: "budget",   text: "Budget range?",          options: ["< $1k", "$1k-5k", "$5k-10k", "> $10k"] }

Initialize internal tracking state:

form_state = { type: null, timeline: null, budget: null }
awaiting_freetext = null
form_submitted = false

Step 2: Send the Header

Send a plain message (no buttons) as the form introduction:

{
  "action": "send",
  "channel": "telegram",
  "message": "**I have a few questions before we proceed.**\
Please answer each one by tapping a button, then tap Submit when done."
}

Step 3: Send Each Question

For each question, send a separate message with inline buttons. Put selectable options in rows of 2-3 buttons. Always put "Other" on its own last row.

The callback_data must follow this convention: form:<question_id>:<value>

Example:

{
  "action": "send",
  "channel": "telegram",
  "message": "**1. What type of project is this?**",
  "buttons": [
    [
      { "text": "Web App", "callback_data": "form:type:web" },
      { "text": "Mobile", "callback_data": "form:type:mobile" },
      { "text": "API", "callback_data": "form:type:api" }
    ],
    [
      { "text": "Other (type your answer)", "callback_data": "form:type:other" }
    ]
  ]
}

{
  "action": "send",
  "channel": "telegram",
  "message": "**2. What is your timeline?**",
  "buttons": [
    [
      { "text": "This week", "callback_data": "form:timeline:this_week" },
      { "text": "This month", "callback_data": "form:timeline:this_month" },
      { "text": "No rush", "callback_data": "form:timeline:no_rush" }
    ],
    [
      { "text": "Other (type your answer)", "callback_data": "form:timeline:other" }
    ]
  ]
}

{
  "action": "send",
  "channel": "telegram",
  "message": "**3. Budget range?**",
  "buttons": [
    [
      { "text": "< $1k", "callback_data": "form:budget:lt_1k" },
      { "text": "$1k-5k", "callback_data": "form:budget:1k_5k" }
    ],
    [
      { "text": "$5k-10k", "callback_data": "form:budget:5k_10k" },
      { "text": "> $10k", "callback_data": "form:budget:gt_10k" }
    ],
    [
      { "text": "Other (type your answer)", "callback_data": "form:budget:other" }
    ]
  ]
}

Step 4: Send the Submit Button

After all questions, send the submit/cancel message:

{
  "action": "send",
  "channel": "telegram",
  "message": "**When you've answered all questions above, tap Submit.**",
  "buttons": [
    [{ "text": "\✓ Submit All Answers", "callback_data": "form:submit" }],
    [{ "text": "\✗ Cancel", "callback_data": "form:cancel" }]
  ]
}

Step 5: Handle Callbacks

When you receive a callback starting with form::

Regular option (form:<qid>:<value> where value is not other):

• Record the answer: form_state[qid] = value
• Acknowledge: send "Got it -- <question label>: **<chosen label>**"

"Other" option (form:<qid>:other):

• Send: "Type your answer for: <question text>"
• Set awaiting_freetext = qid
• The next plain text message from the user is their free-text answer
• Record: form_state[qid] = <user's text>
• Acknowledge: "Got it -- <question label>: **<user's text>**"
• Clear awaiting_freetext

Submit (form:submit):

• Check form_state for any null values
• If incomplete: send "You still need to answer: <list of unanswered questions>"
• If complete: set form_submitted = true and proceed with the collected answers

Cancel (form:cancel):

• Discard form_state
• Send: "Form cancelled. Let me know how you'd like to proceed."

Step 6: Use the Answers

Once submitted, reference the collected answers as structured data and proceed:

Collected: { type: "mobile", timeline: "End of March", budget: "1k_5k" }

Now continue with the original task using these clarified requirements.

Changing Answers

Users can click a different button for any question at any time before submitting. Simply overwrite the previous value and acknowledge the change:

"Updated -- <question>: **<new value>**"

Callback Data Convention

• All form callbacks must use the form: prefix
• Format: form:<question_id>:<value>
• Keep question IDs short (2-8 chars) — Telegram has a 64-byte callback_data limit
• Keep values short and use underscores instead of spaces
• The agent identifies form callbacks by checking if the incoming message starts with form:

Button Layout Rules

• Maximum 2-3 buttons per row for clean rendering
• Keep button labels under 20 characters
• Use Title Case for option labels
• "Other" button always says: "Other (type your answer)"
• "Other" button always goes on its own last row
• Submit button includes checkmark: "\✓ Submit All Answers"
• Cancel button includes X mark: "\✗ Cancel"

Edge Cases and Advanced Patterns

See references/form-patterns.md for:

• Handling timeouts and abandoned forms
• Dependent questions (show question B only after A is answered)
• Large option sets (>6 options)
• Multi-select questions (toggle pattern)
• Free-text disambiguation
• Resuming interrupted forms