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fix(brain): correct Google Chat Add-on response format — chatDataAction

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The correct Add-ons envelope uses `chatDataAction` (NOT `chatDataActionMarkup`):
  { "hostAppDataAction": { "chatDataAction": { "createMessageAction": { "message": {...} } } } }

Previous attempts:
1. Plain Message → 200 OK but "not responding" (wrong format for Add-ons)
2. chatDataActionMarkup → 200 OK but "not responding" (wrong field name)
3. chatDataAction → this should work per quickstart-http docs

Ref: https://developers.google.com/workspace/add-ons/chat/quickstart-http

Co-Authored-By: claude-flow <ruv@ruv.net>
This commit is contained in:
rUv 2026-03-25 21:00:42 +00:00
parent 2ac9096ed3
commit 6ca508a20f
1 changed files with 34 additions and 18 deletions
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52
crates/mcp-brain-server/src/routes.rs
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@ -6069,28 +6069,36 @@ struct GoogleChatUser {
email: Option<String>,
}
/// Google Chat response — return raw Message object.
/// Google Chat Add-on response in the correct DataActions envelope.
///
/// For HTTP endpoint Chat apps, the response is a plain Message object:
/// { "text": "...", "cardsV2": [...] }
/// Google Workspace Add-ons (HTTP endpoint) expect:
/// { "hostAppDataAction": { "chatDataAction": { "createMessageAction": { "message": {...} } } } }
///
/// The text field is required as a notification fallback.
/// cardsV2 provides the rich card UI.
/// Note: the key is `chatDataAction` (NOT `chatDataActionMarkup`).
/// Ref: https://developers.google.com/workspace/add-ons/chat/quickstart-http
fn chat_card(title: &str, subtitle: &str, sections: Vec<serde_json::Value>) -> serde_json::Value {
serde_json::json!({
"text": format!("{} — {}", title, subtitle),
"cardsV2": [{
"cardId": "brain-response",
"card": {
"header": {
"title": title,
"subtitle": subtitle,
"imageUrl": "https://pi.ruv.io/og-image.svg",
"imageType": "CIRCLE"
},
"sections": sections
"hostAppDataAction": {
"chatDataAction": {
"createMessageAction": {
"message": {
"text": format!("{} — {}", title, subtitle),
"cardsV2": [{
"cardId": "brain-response",
"card": {
"header": {
"title": title,
"subtitle": subtitle,
"imageUrl": "https://pi.ruv.io/og-image.svg",
"imageType": "CIRCLE"
},
"sections": sections
}
}]
}
}
}
}]
}
})
}
@ -6129,7 +6137,15 @@ async fn google_chat_handler(
let raw = String::from_utf8_lossy(&body);
tracing::warn!("Failed to parse Chat event: {}. Raw: {}", err, &raw[..raw.len().min(500)]);
return Json(serde_json::json!({
"text": "Pi Brain received your message but couldn't parse it. Try: help"
"hostAppDataAction": {
"chatDataAction": {
"createMessageAction": {
"message": {
"text": "Pi Brain received your message but couldn't parse it. Try: help"
}
}
}
}
}));
}
};