ice: Use classes to create describe metadata instead of stringBuilder.

ice/src/main/java/com/altinity/ice/Main.java

@@ -69,14 +69,10 @@ void describe(
       @CommandLine.Option(
               names = {"--json"},
               description = "Output JSON instead of YAML")
-          boolean json,
-      @CommandLine.Option(
-              names = {"--include-metrics"},
-              description = "Include table metrics in the output")
-          boolean includeMetrics)
+          boolean json)
       throws IOException {
     try (RESTCatalog catalog = loadCatalog(this.configFile)) {
-      Describe.run(catalog, target, json, includeMetrics);
+      Describe.run(catalog, target, json);
     }
   }
 

ice/src/main/java/com/altinity/ice/internal/cmd/Describe.java

@@ -25,8 +25,7 @@ public final class Describe {
   private Describe() {}
 
   // TODO: refactor: the use of StringBuilder below is absolutely criminal
-  public static void run(RESTCatalog catalog, String target, boolean json, boolean includeMetrics)
-      throws IOException {
+  public static void run(RESTCatalog catalog, String target, boolean json) throws IOException {
     String targetNamespace = null;
     String targetTable = null;
     if (target != null && !target.isEmpty()) {
@@ -100,9 +99,7 @@ public static void run(RESTCatalog catalog, String target, boolean json, boolean
           sb.append("\t\tlocation: " + snapshot.manifestListLocation() + "\n");
         }
 
-        if (includeMetrics) {
-          printTableMetrics(table, sb);
-        }
+        printTableMetrics(table, sb);
       }
     }
     String r = sb.toString().replace("\t", "  ");

ice/src/main/java/com/altinity/ice/internal/model/TableMetadata.java

@@ -0,0 +1,41 @@
+package com.altinity.ice.internal.model;
+
+import com.fasterxml.jackson.annotation.JsonInclude;
+import java.util.List;
+import java.util.Map;
+
+@JsonInclude(JsonInclude.Include.NON_NULL)
+public record TableMetadata(String kind, Metadata metadata, TableData data) {
+  public TableMetadata {
+    if (kind == null) {
+      kind = "Table";
+    }
+  }
+
+  public record Metadata(String id) {}
+
+  public record TableData(
+      String schema_raw,
+      String partition_spec_raw,
+      String sort_order_raw,
+      Map<String, String> properties,
+      String location,
+      SnapshotInfo current_snapshot,
+      List<MetricsInfo> metrics) {}
+
+  public record SnapshotInfo(
+      long sequence_number,
+      long id,
+      Long parent_id,
+      long timestamp,
+      String timestamp_iso,
+      String timestamp_iso_local,
+      String operation,
+      Map<String, String> summary,
+      String location) {}
+
+  public record MetricsInfo(String file, long record_count, List<ColumnMetrics> columns) {}
+
+  public record ColumnMetrics(
+      String name, Long value_count, Long null_count, String lower_bound, String upper_bound) {}
+}