include closed channel IDs in node details

application/src/main/java/de/cotto/lndmanagej/controller/NodeController.java

@@ -44,7 +44,13 @@ public class NodeController {
     public NodeDetailsDto getDetails(@PathVariable Pubkey pubkey) {
         mark("getDetails");
         Node node = nodeService.getNode(pubkey);
-        return new NodeDetailsDto(pubkey, node.alias(), getChannelIdsForPubkey(pubkey), node.online());
+        return new NodeDetailsDto(
+                pubkey,
+                node.alias(),
+                getChannelIdsForPubkey(pubkey),
+                getClosedChannelIdsForPubkey(pubkey),
+                node.online()
+        );
     }
 
     @GetMapping("/open-channels")
@@ -61,6 +67,13 @@ public class NodeController {
                 .collect(Collectors.toList());
     }
 
+    private List<ChannelId> getClosedChannelIdsForPubkey(Pubkey pubkey) {
+        return channelService.getClosedChannelsWith(pubkey).stream()
+                .map(Channel::getId)
+                .sorted()
+                .collect(Collectors.toList());
+    }
+
     private void mark(String getDetails) {
         metrics.mark(MetricRegistry.name(getClass(), getDetails));
     }

application/src/main/java/de/cotto/lndmanagej/controller/dto/NodeDetailsDto.java

@@ -11,6 +11,7 @@ public record NodeDetailsDto(
         @JsonSerialize(using = ToStringSerializer.class) Pubkey node,
         String alias,
         List<ChannelId> channels,
+        List<ChannelId> closedChannels,
         boolean online
 ) {
 }

application/src/main/java/de/cotto/lndmanagej/service/ChannelService.java

@@ -95,6 +95,12 @@ public class ChannelService {
                 .collect(Collectors.toSet());
     }
 
+    public Set<ClosedChannel> getClosedChannelsWith(Pubkey peer) {
+        return getClosedChannels().stream()
+                .filter(c -> peer.equals(c.getRemotePubkey()))
+                .collect(Collectors.toSet());
+    }
+
     public Set<LocalChannel> getAllChannelsWith(Pubkey peer) {
         return getAllLocalChannels()
                 .filter(c -> peer.equals(c.getRemotePubkey()))