chore(timeline): add an FFI helper to get the debug string of a TimelineUniqueId

Author: bnjbvr

Cargo.lock

@@ -37,6 +37,7 @@ indexmap = "2.0.0"
 itertools = { workspace = true }
 matrix-sdk = { workspace = true, features = ["experimental-sliding-sync", "e2e-encryption"] }
 matrix-sdk-base = { workspace = true }
+matrix-sdk-ffi-macros = { workspace = true }
 mime = "0.3.16"
 once_cell = { workspace = true }
 pin-project-lite = { workspace = true }

crates/matrix-sdk-ui/Cargo.toml

@@ -27,6 +27,16 @@ use super::{EventTimelineItem, VirtualTimelineItem};
 #[cfg_attr(feature = "uniffi", derive(uniffi::Object))]
 pub struct TimelineUniqueId(pub(crate) String);
 
+#[cfg(all(not(tarpaulin_include), feature = "uniffi"))] // debug-logging functionality
+#[matrix_sdk_ffi_macros::export]
+impl TimelineUniqueId {
+    /// Returns a debug string representing the unique id, for debugging
+    /// purposes.
+    pub fn debug_string(&self) -> String {
+        format!("{self:?}")
+    }
+}
+
 impl PartialEq<TimelineUniqueId> for &TimelineUniqueId {
     fn eq(&self, other: &TimelineUniqueId) -> bool {
         self.0 == other.0