Refactor desktop into App type

packages/desktop/src/events.rs

@@ -8,9 +8,27 @@ pub struct IpcMessage {
     params: serde_json::Value,
 }
 
+#[derive(Deserialize, Serialize, Debug, Clone)]
+pub enum KnownIpcMethod<'a> {
+    FileDialog,
+    UserEvent,
+    Query,
+    BrowserOpen,
+    Initialize,
+    Other(&'a str),
+}
+
 impl IpcMessage {
-    pub(crate) fn method(&self) -> &str {
-        self.method.as_str()
+    pub(crate) fn method(&self) -> KnownIpcMethod {
+        match self.method.as_str() {
+            // todo: this is a misspelling
+            "file_diolog" => KnownIpcMethod::FileDialog,
+            "user_event" => KnownIpcMethod::UserEvent,
+            "query" => KnownIpcMethod::Query,
+            "browser_open" => KnownIpcMethod::BrowserOpen,
+            "initialize" => KnownIpcMethod::Initialize,
+            _ => KnownIpcMethod::Other(&self.method),
+        }
     }
 
     pub(crate) fn params(self) -> serde_json::Value {