fix: container parsing (#948)

lib/data/model/container/image.dart

@@ -37,12 +37,12 @@ final class PodmanImg implements ContainerImg {
   String toRawJson() => json.encode(toJson());
 
   factory PodmanImg.fromJson(Map<String, dynamic> json) => PodmanImg(
-    repository: json['repository'],
+    repository: _asString(json['repository']),
-    tag: json['tag'],
+    tag: _asString(json['tag']),
-    id: json['Id'],
+    id: _asString(json['Id']),
-    created: json['Created'],
+    created: _asInt(json['Created']),
-    size: json['Size'],
+    size: _asInt(json['Size']),
-    containers: json['Containers'],
+    containers: _asInt(json['Containers']),
   );
 
   Map<String, dynamic> toJson() => {
@@ -119,3 +119,16 @@ final class DockerImg implements ContainerImg {
     'Tag': tag,
   };
 }
+
+String? _asString(dynamic val) {
+  if (val == null) return null;
+  if (val is String) return val;
+  return val.toString();
+}
+
+int? _asInt(dynamic val) {
+  if (val == null) return null;
+  if (val is int) return val;
+  if (val is double) return val.toInt();
+  return int.tryParse(val.toString());
+}

lib/data/provider/container.dart

@@ -48,14 +48,7 @@ class ContainerNotifier extends _$ContainerNotifier {
   }
 
   Future<void> setType(ContainerType type) async {
-    state = state.copyWith(
+    state = state.copyWith(type: type, error: null, runLog: null, items: null, images: null, version: null);
-      type: type,
-      error: null,
-      runLog: null,
-      items: null,
-      images: null,
-      version: null,
-    );
     Stores.container.setType(type, hostId);
     sudoCompleter = Completer<bool>();
     await refresh();
@@ -180,9 +173,13 @@ class ContainerNotifier extends _$ContainerNotifier {
     try {
       final statsLines = statsRaw.split('\n');
       statsLines.removeWhere((element) => element.isEmpty);
-      for (var item in state.items!) {
+      final items = state.items;
+      if (items == null) return;
+
+      for (var item in items) {
         final id = item.id;
         if (id == null) continue;
+        if (id.length < 5) continue;
         final statsLine = statsLines.firstWhereOrNull(
           /// Use 5 characters to match the container id, possibility of mismatch
           /// is very low.
@@ -267,7 +264,6 @@ class ContainerNotifier extends _$ContainerNotifier {
   }
 }
 
-
 const _jsonFmt = '--format "{{json .}}"';
 
 enum ContainerCmdType {