feat: track phase changes in sync coordinator

Added functionality to monitor phase changes in the sync coordinator, enhancing the progress emission logic. This update ensures that changes in synchronization phases are accurately reflected in the emitted progress, improving the overall synchronization process.

Author: PastaPastaPasta

dash-spv/src/client/sync_coordinator.rs

@@ -116,6 +116,7 @@ impl<
         let mut last_emitted_header_height: u32 = 0;
         let mut last_emitted_filter_header_height: u32 = 0;
         let mut last_emitted_filters_downloaded: u64 = 0;
+        let mut last_emitted_phase_name: Option<String> = None;
 
         loop {
             // Check if we should stop
@@ -363,10 +364,14 @@ impl<
                     sync_progress.filter_sync_available = self.config.enable_filters;
 
                     let filters_downloaded = sync_progress.filters_downloaded;
+                    let current_phase_name = phase_snapshot.name().to_string();
+                    let phase_changed =
+                        last_emitted_phase_name.as_ref() != Some(&current_phase_name);
 
                     if abs_header_height != last_emitted_header_height
                         || filter_header_height != last_emitted_filter_header_height
                         || filters_downloaded != last_emitted_filters_downloaded
+                        || phase_changed
                     {
                         let sync_stage =
                             Self::map_phase_to_stage(&phase_snapshot, &sync_progress, peer_best);
@@ -391,6 +396,7 @@ impl<
                         last_emitted_header_height = abs_header_height;
                         last_emitted_filter_header_height = filter_header_height;
                         last_emitted_filters_downloaded = filters_downloaded;
+                        last_emitted_phase_name = Some(current_phase_name.clone());
 
                         self.emit_progress(progress);
                     }