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ha_client/lib/managers/location_manager.class.dart
2019-10-21 18:22:25 +00:00

161 lines
5.4 KiB
Dart

part of '../main.dart';
class LocationManager {
static final LocationManager _instance = LocationManager
._internal();
factory LocationManager() {
return _instance;
}
LocationManager._internal() {
init();
}
final int defaultUpdateIntervalMinutes = 20;
final String backgroundTaskId = "haclocationtask4352";
final String backgroundTaskTag = "haclocation";
Duration _updateInterval;
bool _isEnabled;
void init() async {
SharedPreferences prefs = await SharedPreferences.getInstance();
await prefs.reload();
_updateInterval = Duration(minutes: prefs.getInt("location-interval") ??
defaultUpdateIntervalMinutes);
_isEnabled = prefs.getBool("location-enabled") ?? false;
if (_isEnabled) {
_startLocationService();
}
}
void setSettings(bool enabled, int interval) async {
SharedPreferences prefs = await SharedPreferences.getInstance();
if (interval != _updateInterval.inMinutes) {
prefs.setInt("location-interval", interval);
_updateInterval = Duration(minutes: interval);
}
if (enabled && !_isEnabled) {
Logger.d("Enabling location service");
SharedPreferences prefs = await SharedPreferences.getInstance();
prefs.setBool("location-enabled", enabled);
_isEnabled = true;
_startLocationService();
} else if (!enabled && _isEnabled) {
Logger.d("Disabling location service");
SharedPreferences prefs = await SharedPreferences.getInstance();
prefs.setBool("location-enabled", enabled);
_isEnabled = false;
_stopLocationService();
}
}
void _startLocationService() async {
Logger.d("Scheduling location update for every ${_updateInterval
.inMinutes} minutes...");
String webhookId = ConnectionManager().webhookId;
String httpWebHost = ConnectionManager().httpWebHost;
if (webhookId != null && webhookId.isNotEmpty) {
await workManager.Workmanager.registerPeriodicTask(
backgroundTaskId,
"haClientLocationTracking",
tag: backgroundTaskTag,
inputData: {
"webhookId": webhookId,
"httpWebHost": httpWebHost
},
frequency: _updateInterval,
existingWorkPolicy: workManager.ExistingWorkPolicy.replace,
backoffPolicy: workManager.BackoffPolicy.linear,
constraints: workManager.Constraints(
requiresBatteryNotLow: false,
requiresCharging: false,
requiresDeviceIdle: false,
requiresStorageNotLow: false,
networkType: workManager.NetworkType.connected
)
);
}
}
void _stopLocationService() async {
Logger.d("Canceling previous schedule if any...");
await workManager.Workmanager.cancelByTag(backgroundTaskTag);
}
void updateDeviceLocation() async {
if (ConnectionManager().webhookId != null &&
ConnectionManager().webhookId.isNotEmpty) {
String url = "${ConnectionManager()
.httpWebHost}/api/webhook/${ConnectionManager().webhookId}";
Map<String, String> headers = {};
Logger.d("[Location] Getting device location...");
Position location = await Geolocator().getCurrentPosition(
desiredAccuracy: LocationAccuracy.medium);
Logger.d("[Location] Got location: ${location.latitude} ${location
.longitude}. Sending home...");
int battery = DateTime
.now()
.hour;
var data = {
"type": "update_location",
"data": {
"gps": [location.latitude, location.longitude],
"gps_accuracy": location.accuracy,
"battery": battery
}
};
headers["Content-Type"] = "application/json";
await http.post(
url,
headers: headers,
body: json.encode(data)
);
Logger.d("[Location] ...done.");
}
}
}
void updateDeviceLocationIsolate() {
workManager.Workmanager.executeTask((backgroundTask, data) {
print("[Location isolate] Started: $backgroundTask");
print("[Location isolate] loading settings");
String webhookId = data["webhookId"];
String httpWebHost = data["httpWebHost"];
if (webhookId != null && webhookId.isNotEmpty) {
Logger.d("[Location isolate] Getting device location...");
Geolocator().getCurrentPosition(desiredAccuracy: LocationAccuracy.medium).then((location) {
Logger.d("[Location isolate] Got location: ${location.latitude} ${location.longitude}. Sending home...");
int battery = DateTime.now().hour;
String url = "$httpWebHost/api/webhook/$webhookId";
Map<String, String> headers = {};
headers["Content-Type"] = "application/json";
var data = {
"type": "update_location",
"data": {
"gps": [location.latitude, location.longitude],
"gps_accuracy": location.accuracy,
"battery": battery
}
};
http.post(
url,
headers: headers,
body: json.encode(data)
).catchError((e) {
print("[Location isolate] Error sending data: ${e.toString()}");
}).then((_) {
print("[Location isolate] done!");
});
}).catchError((e) {
print("[Location isolate] Error getting location: ${e.toString()}");
});
} else {
print("[Location isolate] No webhook id. Aborting");
}
return Future.value(true);
});
}