feat(ffi): add Element specific well known struct and a way to deseri…

…alize it from external clients

bindings/matrix-sdk-ffi/src/element.rs

@@ -0,0 +1,20 @@
+use crate::ClientError;
+use serde::Deserialize;
+
+/// Well-known settings specific to ElementCall
+#[derive(Deserialize, uniffi::Record)]
+pub struct ElementCallWellKnown {
+    widget_url: String,
+}
+
+/// Element specific well-known settings
+#[derive(Deserialize, uniffi::Record)]
+pub struct ElementWellKnown {
+    call: ElementCallWellKnown,
+}
+
+/// Helper function to parse a string into a ElementWellKnown struct
+#[uniffi::export]
+pub fn make_element_well_known(string: String) -> Result<ElementWellKnown, ClientError> {
+    serde_json::from_str(&string).map_err(ClientError::new)
+}

bindings/matrix-sdk-ffi/src/lib.rs

@@ -24,6 +24,7 @@ mod authentication;
 mod chunk_iterator;
 mod client;
 mod client_builder;
+mod element;
 mod encryption;
 mod error;
 mod event;