655 lines
19 KiB
Dart
655 lines
19 KiB
Dart
// CONTOH IMPLEMENTASI DASHBOARD DENGAN API SERVICE
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// File ini adalah contoh, copy kode yang diperlukan ke dashboard_screen.dart
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import 'dart:async';
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import 'package:flutter/material.dart';
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import 'package:fl_chart/fl_chart.dart';
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import '../services/api_service.dart';
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import '../services/notification_manager.dart';
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import '../models/sensor_data.dart';
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import '../widgets/temperature_chart.dart';
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import '../widgets/weight_chart.dart';
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import 'chart_screen.dart';
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import 'notification_screen.dart';
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class DashboardScreenWithApi extends StatefulWidget {
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const DashboardScreenWithApi({super.key});
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@override
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State<DashboardScreenWithApi> createState() => _DashboardScreenWithApiState();
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}
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class _DashboardScreenWithApiState extends State<DashboardScreenWithApi> {
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final ApiService _apiService = ApiService();
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final NotificationManager _notificationManager = NotificationManager();
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// Data dari sensor
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double suhu = 0.0;
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double berat = 0.0;
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double target = 0.0;
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// Data historis untuk grafik
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List<FlSpot> suhuHistory = [];
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List<FlSpot> beratHistory = [];
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double chartTimeCounter = 0;
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// Status relay
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bool heater = false;
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bool fanIn = false;
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bool exhaust = false;
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// Status sistem
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String statusSistem = 'DISCONNECTED';
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bool isApiConnected = false;
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String lastStatusMessage = 'Menghubungkan...';
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// Track previous status untuk notifikasi
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String _previousStatus = '';
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// Timer untuk auto-update
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Timer? _pollingTimer;
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// Current navigation index
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int _currentIndex = 0;
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@override
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void initState() {
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super.initState();
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_initializeChartData(); // Load initial chart data
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_initializeNotifications();
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_initializeConnections();
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_startPolling();
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}
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// Initialize notifications
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Future<void> _initializeNotifications() async {
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await _notificationManager.initialize();
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}
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// Initialize chart data
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Future<void> _initializeChartData() async {
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// Init dengan dummy data dulu
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_initializeDummyChartData();
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try {
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// Load 20 data terakhir dari API untuk grafik
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final historyData = await _apiService.getDataHistory(limit: 20);
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if (historyData.isNotEmpty && mounted) {
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setState(() {
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suhuHistory.clear();
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beratHistory.clear();
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for (int i = 0; i < historyData.length; i++) {
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final data = historyData[i];
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suhuHistory.add(FlSpot(i.toDouble(), data.suhu));
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beratHistory.add(FlSpot(i.toDouble(), data.berat));
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}
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chartTimeCounter = historyData.length.toDouble();
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});
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}
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} catch (e) {
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print('❌ Error loading chart data: $e');
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// Tetap pakai dummy data jika error
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}
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}
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void _initializeDummyChartData() {
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suhuHistory.clear();
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beratHistory.clear();
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double beratAwal = 450.0;
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double suhuBase = 28.0;
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for (int i = 0; i < 15; i++) {
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double suhuVal = suhuBase + (i * 0.3) + (i % 2 == 0 ? 0.2 : -0.1);
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suhuHistory.add(FlSpot(i.toDouble(), suhuVal));
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double beratVal = beratAwal - (i * 2.5);
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beratHistory.add(FlSpot(i.toDouble(), beratVal));
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}
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chartTimeCounter = 15;
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}
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// Auto-update data setiap 5 detik
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void _startPolling() {
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_pollingTimer = Timer.periodic(const Duration(seconds: 5), (timer) {
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if (mounted && isApiConnected) {
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_loadLatestData();
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}
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});
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}
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Future<void> _initializeConnections() async {
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// Test API connection
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final apiConnected = await _apiService.testConnection();
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setState(() {
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isApiConnected = apiConnected;
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// Set status langsung ke READY jika API connected
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if (apiConnected) {
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statusSistem = 'READY';
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lastStatusMessage = 'Terhubung ke server';
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} else {
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statusSistem = 'DISCONNECTED';
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lastStatusMessage = 'Gagal terhubung ke server';
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}
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});
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if (apiConnected) {
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print('✅ API connected');
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// Load initial data from API
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await _loadLatestData();
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}
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// MQTT dihapus - hanya pakai API polling
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}
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Future<void> _loadLatestData() async {
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try {
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final data = await _apiService.getLatestData();
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if (data != null && mounted) {
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setState(() {
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suhu = data.suhu;
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berat = data.berat;
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target = data.target;
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heater = data.relay1;
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fanIn = data.relay2;
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exhaust = data.relay4;
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// Update chart data
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if (suhuHistory.length > 20) {
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suhuHistory.removeAt(0);
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beratHistory.removeAt(0);
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// Reindex
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for (int i = 0; i < suhuHistory.length; i++) {
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suhuHistory[i] = FlSpot(i.toDouble(), suhuHistory[i].y);
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beratHistory[i] = FlSpot(i.toDouble(), beratHistory[i].y);
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}
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chartTimeCounter = suhuHistory.length.toDouble();
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}
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suhuHistory.add(FlSpot(chartTimeCounter, suhu));
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beratHistory.add(FlSpot(chartTimeCounter, berat));
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chartTimeCounter++;
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// Update status dan trigger notifikasi
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String newStatus = data.status;
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// Notifikasi hanya untuk pengeringan selesai
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if (newStatus != _previousStatus) {
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// HANYA notifikasi pengeringan selesai
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if (newStatus == 'SELESAI' && _previousStatus != 'SELESAI') {
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print('🔔 Dashboard: Status changed to SELESAI');
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print(' Previous: $_previousStatus → Current: $newStatus');
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print(' Berat: $berat');
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print(' Triggering notification...');
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_notificationManager.notifyPengeringanSelesai(berat);
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}
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_previousStatus = newStatus;
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}
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statusSistem = newStatus;
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});
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} else if (mounted) {
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// Data null, tampilkan error
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_showErrorSnackBar('Gagal memuat data dari server');
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}
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} catch (e) {
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print('❌ Error loading data: $e');
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if (mounted) {
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_showErrorSnackBar('Error: ${e.toString()}');
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}
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}
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}
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// =====================================================
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// UI HELPERS
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// =====================================================
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void _showSuccessSnackBar(String message) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(message),
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backgroundColor: Colors.green,
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duration: const Duration(seconds: 2),
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),
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);
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}
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void _showErrorSnackBar(String message) {
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ScaffoldMessenger.of(context).showSnackBar(
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SnackBar(
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content: Text(message),
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backgroundColor: Colors.red,
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duration: const Duration(seconds: 3),
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),
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);
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}
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@override
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void dispose() {
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_pollingTimer?.cancel();
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// Jangan disconnect MQTT karena singleton
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super.dispose();
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}
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@override
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Widget build(BuildContext context) {
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// List of screens
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final List<Widget> screens = [
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_buildDashboardContent(),
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const NotificationScreen(),
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];
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return Scaffold(
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appBar: _currentIndex == 0 ? AppBar(
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title: const Text('Dashboard Pengering Ikan'),
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actions: [
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// API status only
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Padding(
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padding: const EdgeInsets.only(right: 16),
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child: Icon(
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isApiConnected ? Icons.cloud_done : Icons.cloud_off,
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color: isApiConnected ? Colors.green : Colors.red,
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size: 24,
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),
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),
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],
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) : null,
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body: screens[_currentIndex],
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bottomNavigationBar: BottomNavigationBar(
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type: BottomNavigationBarType.fixed,
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backgroundColor: Colors.white,
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selectedItemColor: Colors.blue,
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unselectedItemColor: Colors.grey,
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currentIndex: _currentIndex,
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onTap: (index) {
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if (index == 2) {
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// Navigate to chart screen
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Navigator.push(
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context,
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MaterialPageRoute(builder: (context) => const ChartScreen()),
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);
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} else {
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setState(() {
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_currentIndex = index;
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});
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}
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},
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items: const [
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BottomNavigationBarItem(
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icon: Icon(Icons.home),
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label: 'Dashboard',
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),
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BottomNavigationBarItem(
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icon: Icon(Icons.notifications),
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label: 'Notifikasi',
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),
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BottomNavigationBarItem(
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icon: Icon(Icons.bar_chart),
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label: 'Grafik',
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),
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],
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),
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);
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}
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Widget _buildDashboardContent() {
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return RefreshIndicator(
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onRefresh: _loadLatestData,
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child: SingleChildScrollView(
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physics: const AlwaysScrollableScrollPhysics(),
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padding: const EdgeInsets.all(16),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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// Status Card
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_buildStatusCard(),
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const SizedBox(height: 16),
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// Metrics
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Row(
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children: [
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Expanded(
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child: _buildMetricCard(
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icon: Icons.thermostat,
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iconColor: Colors.orange,
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label: 'Suhu',
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value: suhu.toStringAsFixed(1),
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unit: '°C',
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),
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),
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const SizedBox(width: 12),
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Expanded(
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child: _buildMetricCard(
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icon: Icons.scale,
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iconColor: Colors.blue,
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label: 'Berat',
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value: berat.toStringAsFixed(0),
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unit: 'g',
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),
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),
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],
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),
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const SizedBox(height: 12),
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// Target
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_buildMetricCard(
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icon: Icons.flag,
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iconColor: Colors.green,
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label: 'Target Berat',
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value: target.toStringAsFixed(0),
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unit: 'g',
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),
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const SizedBox(height: 16),
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// ======= GRAFIK CHARTS =======
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// Temperature Chart Widget
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TemperatureChart(
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dataPoints: suhuHistory,
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title: 'Suhu Real-time',
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lineColor: Colors.orange,
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gradientStartColor: Colors.orange,
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gradientEndColor: Colors.red,
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),
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const SizedBox(height: 12),
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// Weight Chart Widget
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WeightChart(
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dataPoints: beratHistory,
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targetWeight: target,
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title: 'Berat Real-time',
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lineColor: Colors.blue,
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gradientStartColor: Colors.blue,
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gradientEndColor: Colors.cyan,
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),
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const SizedBox(height: 16),
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// Devices
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const Text(
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'Perangkat',
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style: TextStyle(
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fontSize: 18,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(height: 12),
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GridView.count(
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crossAxisCount: 3,
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shrinkWrap: true,
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physics: const NeverScrollableScrollPhysics(),
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mainAxisSpacing: 12,
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crossAxisSpacing: 12,
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childAspectRatio: 0.9,
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children: [
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_buildDeviceCard(
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icon: Icons.whatshot,
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iconColor: Colors.deepOrange,
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label: 'Heater',
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status: heater,
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),
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_buildDeviceCard(
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icon: Icons.air,
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iconColor: Colors.blue,
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label: 'Fan',
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status: fanIn,
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),
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_buildDeviceCard(
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icon: Icons.wind_power,
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iconColor: Colors.teal,
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label: 'Exhaust',
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status: exhaust,
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),
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],
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),
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],
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),
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),
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);
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}
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Widget _buildStatusCard() {
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Color statusColor;
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IconData statusIcon;
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String statusText = statusSistem;
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switch (statusSistem) {
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case 'SELESAI':
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statusColor = Colors.green;
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statusIcon = Icons.check_circle;
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break;
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case 'BERJALAN':
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statusColor = Colors.blue;
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statusIcon = Icons.play_circle;
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break;
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case 'READY':
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statusColor = Colors.orange;
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statusIcon = Icons.hourglass_empty;
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break;
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case 'SCANNING':
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statusColor = Colors.purple;
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statusIcon = Icons.search;
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break;
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case 'CONNECTED':
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statusColor = Colors.green;
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statusIcon = Icons.check_circle_outline;
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break;
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case 'DISCONNECTED':
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statusColor = Colors.red;
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statusIcon = Icons.error_outline;
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statusText = 'TERPUTUS';
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break;
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case 'CONNECTING':
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statusColor = Colors.orange;
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statusIcon = Icons.sync;
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break;
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default:
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statusColor = Colors.grey;
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statusIcon = Icons.info;
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}
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return Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(12),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.05),
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blurRadius: 10,
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offset: const Offset(0, 2),
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),
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],
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),
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child: Row(
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children: [
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Container(
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
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color: statusColor.withOpacity(0.1),
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shape: BoxShape.circle,
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),
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child: Icon(
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statusIcon,
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color: statusColor,
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size: 32,
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),
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),
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const SizedBox(width: 16),
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Expanded(
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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const Text(
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'Status Sistem',
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style: TextStyle(
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fontSize: 12,
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color: Colors.grey,
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),
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),
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const SizedBox(height: 4),
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Text(
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statusText,
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style: TextStyle(
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fontSize: 24,
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fontWeight: FontWeight.bold,
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color: statusColor,
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),
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),
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const SizedBox(height: 4),
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Text(
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statusSistem == 'DISCONNECTED'
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? 'ESP32 tidak terhubung. Periksa koneksi perangkat.'
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: lastStatusMessage,
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style: const TextStyle(
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fontSize: 12,
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color: Colors.grey,
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),
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maxLines: 2,
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overflow: TextOverflow.ellipsis,
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),
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],
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),
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),
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],
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),
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);
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}
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Widget _buildMetricCard({
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required IconData icon,
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required Color iconColor,
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required String label,
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required String value,
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required String unit,
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}) {
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return Container(
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padding: const EdgeInsets.all(16),
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decoration: BoxDecoration(
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color: Colors.white,
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borderRadius: BorderRadius.circular(12),
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boxShadow: [
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BoxShadow(
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color: Colors.black.withOpacity(0.05),
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blurRadius: 10,
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offset: const Offset(0, 2),
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),
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],
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),
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child: Column(
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crossAxisAlignment: CrossAxisAlignment.start,
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children: [
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Row(
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children: [
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Icon(icon, color: iconColor, size: 20),
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const SizedBox(width: 8),
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Text(
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label,
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style: const TextStyle(
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fontSize: 14,
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color: Colors.grey,
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),
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),
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],
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),
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const SizedBox(height: 8),
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Row(
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crossAxisAlignment: CrossAxisAlignment.end,
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children: [
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Text(
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value,
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style: const TextStyle(
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fontSize: 28,
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fontWeight: FontWeight.bold,
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),
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),
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const SizedBox(width: 4),
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Padding(
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padding: const EdgeInsets.only(bottom: 4),
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child: Text(
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unit,
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style: const TextStyle(
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fontSize: 14,
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color: Colors.grey,
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),
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),
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),
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],
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),
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],
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),
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);
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}
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|
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Widget _buildDeviceCard({
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required IconData icon,
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required Color iconColor,
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required String label,
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required bool status,
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}) {
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return Container(
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padding: const EdgeInsets.all(12),
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decoration: BoxDecoration(
|
|
color: Colors.white,
|
|
borderRadius: BorderRadius.circular(12),
|
|
boxShadow: [
|
|
BoxShadow(
|
|
color: Colors.black.withOpacity(0.05),
|
|
blurRadius: 10,
|
|
offset: const Offset(0, 2),
|
|
),
|
|
],
|
|
),
|
|
child: Column(
|
|
mainAxisAlignment: MainAxisAlignment.center,
|
|
mainAxisSize: MainAxisSize.min,
|
|
children: [
|
|
Container(
|
|
padding: const EdgeInsets.all(8),
|
|
decoration: BoxDecoration(
|
|
color: status ? iconColor.withOpacity(0.1) : Colors.grey.shade100,
|
|
shape: BoxShape.circle,
|
|
),
|
|
child: Icon(
|
|
icon,
|
|
color: status ? iconColor : Colors.grey,
|
|
size: 24,
|
|
),
|
|
),
|
|
const SizedBox(height: 4),
|
|
Text(
|
|
label,
|
|
style: const TextStyle(
|
|
fontSize: 11,
|
|
fontWeight: FontWeight.bold,
|
|
),
|
|
textAlign: TextAlign.center,
|
|
maxLines: 1,
|
|
overflow: TextOverflow.ellipsis,
|
|
),
|
|
const SizedBox(height: 3),
|
|
Container(
|
|
padding: const EdgeInsets.symmetric(horizontal: 8, vertical: 2),
|
|
decoration: BoxDecoration(
|
|
color: status ? iconColor.withOpacity(0.15) : Colors.grey.shade100,
|
|
borderRadius: BorderRadius.circular(8),
|
|
),
|
|
child: Text(
|
|
status ? 'ON' : 'OFF',
|
|
style: TextStyle(
|
|
fontSize: 10,
|
|
fontWeight: FontWeight.bold,
|
|
color: status ? iconColor : Colors.grey,
|
|
),
|
|
),
|
|
),
|
|
],
|
|
),
|
|
);
|
|
}
|
|
}
|