Function app_code

crates/app-data/src/app_data.rs:315–325

Extracts the `appCode` from a full app-data document, if present. `appCode` sits at the document root, next to (not inside) the protocol `metadata`, so it is not part of [`ProtocolAppData`] and callers that want it — e.g. for analytics — parse it separately with this helper. Returns `None` for absent or malformed app data.

(full_app_data: &[u8])

/// it — e.g. for analytics — parse it separately with this helper. Returns
/// `None` for absent or malformed app data.
pub fn app_code(full_app_data: &[u8]) -> Option<String> {
    #[derive(Deserialize)]
    struct AppCode {
        #[serde(rename = "appCode")]
        app_code: Option<String>,
    }

    serde_json::from_slice::<AppCode>(full_app_data)
        .ok()?
        .app_code
}

/// The root app data JSON object.
///