Full agent admin via API and UI

frontend/lib/agent_screen.dart

@@ -0,0 +1,105 @@
+import 'package:flutter/material.dart';
+import 'app_menu.dart';
+import 'backend.dart';
+import 'chat_screen.dart';
+
+class ConfigField {
+  final String name;
+  final String type;
+  final TextEditingController controller;
+
+  ConfigField({required this.name, required this.type, required this.controller});
+}
+
+class AgentScreen extends StatefulWidget {
+  final int agentId;
+
+  AgentScreen({required this.agentId});
+
+  @override
+  _AgentScreenState createState() => _AgentScreenState();
+}
+
+class _AgentScreenState extends State<AgentScreen> {
+  String? _title;
+  final TextEditingController nameController = TextEditingController();
+  List<ConfigField> configFields = [];
+
+  @override
+  void initState() {
+    super.initState();
+    _loadConfigFields();
+  }
+
+  void _loadConfigFields() async {
+    final response = await Backend.sendAction('get-agent-config-fields', {'agentId': widget.agentId});
+    setState(() {
+      configFields = response['fields'].map((jsonField) {
+        return ConfigField(
+          name: jsonField['name'],
+          type: jsonField['type'],
+          controller: TextEditingController(text: jsonField['value']),
+        );
+      }).toList();
+    });
+  }
+
+  void _saveChanges() async {
+    // Backend.invalidateCache(agent: true);
+    final dataObject = {};
+    for (var configField in configFields) {
+      dataObject[configField.name] = configField.controller.text;
+    }
+    await Backend.sendAction("update-agent", {
+      'agentId': widget.agentId,
+      'data': dataObject,
+    });
+    ScaffoldMessenger.of(context).showSnackBar(
+      SnackBar(content: Text('Agent Updated.')),
+    );
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(
+        title: Text(_title?? 'Agent ${widget.agentId}'),
+        actions: [
+          IconButton(icon: Icon(Icons.settings), onPressed: () {
+            Navigator.push(context, MaterialPageRoute(builder: (_) => AppMenu()));
+          }),
+        ],
+      ),
+      body: Center(
+        child: Padding(
+          padding: const EdgeInsets.all(16.0),
+          child: Column(
+            children: [
+              ListView.builder(
+                shrinkWrap: true,
+                itemCount: configFields.length,
+                itemBuilder: (context, index) {
+                  return Padding(
+                    padding: const EdgeInsets.only(bottom: 8.0),
+                    child: TextField(
+                      keyboardType: TextInputType.multiline,
+                      minLines: 1,
+                      maxLines: 8,
+                      controller: configFields[index].controller,
+                      decoration: InputDecoration(labelText: configFields[index].name),
+                    ),
+                  );
+                },
+              ),
+              SizedBox(height: 20),
+              ElevatedButton(
+                onPressed: _saveChanges,
+                child: Text('Save'),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}