Added Agent Details including Task Details

ac_web/lib/Api/Dtos/AgentTaskDto.dart

@@ -2,57 +2,48 @@ import 'package:ac_web/Api/JsonReader.dart';
 
 /// Dart counterpart of the backend `AgentTaskDto`.
 ///
-/// The exact shape of the backend dto is not final yet, therefore everything
-/// except the name is treated as optional. Unknown properties are simply
-/// ignored, so this dto keeps working while the api grows.
+/// A task is one piece of work an agent is currently busy with. While it runs
+/// the agent appends short lines to [statusUpdates], so the list doubles as
+/// the history of the task.
 class AgentTaskDto {
   const AgentTaskDto({
-    required this.name,
-    this.id,
-    this.description,
-    this.status,
-    this.progress,
-    this.createdAt,
-    this.finishedAt,
+    required this.title,
+    this.startTime,
+    this.statusUpdates = const <String>[],
   });
 
-  final String name;
-  final String? id;
-  final String? description;
-  final String? status;
+  final String title;
 
-  /// Completion between 0 and 100 if the api reports it.
-  final int? progress;
+  /// Moment the agent picked the task up, if the api reports it.
+  final DateTime? startTime;
 
-  final DateTime? createdAt;
-  final DateTime? finishedAt;
+  /// Every status line the agent reported so far, oldest first.
+  final List<String> statusUpdates;
 
-  bool get isFinished => finishedAt != null;
+  bool get hasStatusUpdates => statusUpdates.isNotEmpty;
+
+  /// The most recent status line, or null while the agent did not report one.
+  String? get latestStatus => statusUpdates.isEmpty ? null : statusUpdates.last;
 
   factory AgentTaskDto.fromJson(Map<String, dynamic> json) {
     return AgentTaskDto(
-      name: JsonReader.optionalString(json, 'Name') ?? '',
-      id: JsonReader.optionalString(json, 'Id'),
-      description: JsonReader.optionalString(json, 'Description'),
-      status: JsonReader.optionalString(json, 'Status'),
-      progress: JsonReader.optionalInt(json, 'Progress'),
-      createdAt: JsonReader.optionalDateTime(json, 'CreatedAt'),
-      finishedAt: JsonReader.optionalDateTime(json, 'FinishedAt'),
+      // Older builds of the api called the property "Name".
+      title: JsonReader.optionalString(json, 'Title') ??
+          JsonReader.optionalString(json, 'Name') ??
+          '',
+      startTime: JsonReader.optionalDateTime(json, 'StartTime'),
+      statusUpdates: JsonReader.stringList(json, 'StatusUpdates'),
     );
   }
 
   Map<String, dynamic> toJson() {
     return <String, dynamic>{
-      'Name': name,
-      if (id != null) 'Id': id,
-      if (description != null) 'Description': description,
-      if (status != null) 'Status': status,
-      if (progress != null) 'Progress': progress,
-      if (createdAt != null) 'CreatedAt': createdAt!.toIso8601String(),
-      if (finishedAt != null) 'FinishedAt': finishedAt!.toIso8601String(),
+      'Title': title,
+      if (startTime != null) 'StartTime': startTime!.toIso8601String(),
+      'StatusUpdates': statusUpdates,
     };
   }
 
   @override
-  String toString() => 'AgentTaskDto(name: $name, status: $status)';
+  String toString() => 'AgentTaskDto(title: $title, updates: ${statusUpdates.length})';
 }

ac_web/lib/Api/JsonReader.dart

@@ -85,6 +85,18 @@ class JsonReader {
     return int.tryParse(raw.toString());
   }
 
+  /// Maps a json array of plain values onto a list of strings.
+  static List<String> stringList(Map<String, dynamic> json, String key) {
+    final raw = value(json, key);
+    if (raw is! List) {
+      return const <String>[];
+    }
+    return raw
+        .where((entry) => entry != null)
+        .map((entry) => entry.toString())
+        .toList(growable: false);
+  }
+
   /// Maps a json array onto a list of models, tolerating a missing property.
   static List<T> list<T>(
     Map<String, dynamic> json,