import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:iperf3gui/data/services/iperf3_service.dart';
import 'package:iperf3gui/domain/models/test_configuration.dart';
import 'package:iperf3gui/ui/features/test_run/test_run_view_model.dart';

/// Main test run screen.
///
/// iperf3 is now compiled as a native shared library (libiperf3jni.so)
/// and accessed via JNI. No binary extraction or chmod needed.
class TestRunScreen extends StatelessWidget {
  const TestRunScreen({super.key});

  @override
  Widget build(BuildContext context) {
    return ChangeNotifierProvider(
      create: (_) => TestRunViewModel(
        iperf3Service: Iperf3Service(),
      ),
      child: const _TestRunContent(),
    );
  }
}

class _TestRunContent extends StatefulWidget {
  const _TestRunContent();

  @override
  State<_TestRunContent> createState() => _TestRunContentState();
}

class _TestRunContentState extends State<_TestRunContent> {
  final _serverController = TextEditingController(text: 'speedtest.uztelecom.uz');
  final _portController = TextEditingController(text: '5201');

  @override
  void dispose() {
    _serverController.dispose();
    _portController.dispose();
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text('iperf3-gui'),
      ),
      body: Padding(
        padding: const EdgeInsets.all(16.0),
        child: Column(
          crossAxisAlignment: CrossAxisAlignment.stretch,
          children: [
            // Server input
            TextField(
              controller: _serverController,
              decoration: const InputDecoration(
                labelText: 'Server',
                hintText: 'e.g. iperf.es.net or 192.168.1.1',
              ),
            ),
            const SizedBox(height: 16),

            // Port input
            TextField(
              controller: _portController,
              decoration: const InputDecoration(
                labelText: 'Port',
                hintText: '5201',
              ),
              keyboardType: TextInputType.number,
            ),
            const SizedBox(height: 16),

            // Go button
            Consumer<TestRunViewModel>(
              builder: (context, vm, _) {
                return ElevatedButton(
                  onPressed: vm.state == TestRunState.running
                      ? null
                      : () {
                          final config = TestConfiguration(
                            server: _serverController.text,
                            port: int.tryParse(_portController.text) ?? 5201,
                          );
                          vm.runTest(config);
                        },
                  child: vm.state == TestRunState.running
                      ? const SizedBox(
                          width: 20,
                          height: 20,
                          child: CircularProgressIndicator(strokeWidth: 2),
                        )
                      : const Text('GO'),
                );
              },
            ),
            const SizedBox(height: 16),

            // Status indicator
            Consumer<TestRunViewModel>(
              builder: (context, vm, _) {
                final statusText = switch (vm.state) {
                  TestRunState.idle => '',
                  TestRunState.running => 'Running...',
                  TestRunState.completed => 'Test complete',
                  TestRunState.error => 'Error',
                };
                return Text(
                  statusText,
                  style: TextStyle(
                    color: vm.state == TestRunState.error
                        ? Colors.red
                        : Colors.grey,
                  ),
                );
              },
            ),
            const SizedBox(height: 16),

            // Raw output text box
            Expanded(
              child: Consumer<TestRunViewModel>(
                builder: (context, vm, _) {
                  final output = vm.result?.rawOutput ?? '';
                  return TextField(
                    controller: TextEditingController(text: output),
                    decoration: const InputDecoration(
                      labelText: 'Raw Output',
                      border: OutlineInputBorder(),
                    ),
                    maxLines: null,
                    readOnly: true,
                  );
                },
              ),
            ),
          ],
        ),
      ),
    );
  }
}