From c36010aebed66c0dcb78eaf3ccc05c43e7bbe129 Mon Sep 17 00:00:00 2001
From: Sara <sarasdj@stud.ntnu.no>
Date: Fri, 9 Feb 2024 15:00:53 +0100
Subject: [PATCH] update: json data parsing
---
app/lib/api_handler/fetch_markers.dart | 0
app/lib/pages_and_widgets/default_page.dart | 39 +++--
app/lib/pages_and_widgets/marker_data.dart | 147 ++++++++++++++----
.../__pycache__/data_structs.cpython-311.pyc | Bin 3945 -> 3945 bytes
.../__pycache__/get_markers.cpython-311.pyc | Bin 2626 -> 2626 bytes
server/map/get_markers.py | 6 +-
6 files changed, 143 insertions(+), 49 deletions(-)
create mode 100644 app/lib/api_handler/fetch_markers.dart
diff --git a/app/lib/api_handler/fetch_markers.dart b/app/lib/api_handler/fetch_markers.dart
new file mode 100644
index 00000000..e69de29b
diff --git a/app/lib/pages_and_widgets/default_page.dart b/app/lib/pages_and_widgets/default_page.dart
index 1b0574c3..1713e1d0 100644
--- a/app/lib/pages_and_widgets/default_page.dart
+++ b/app/lib/pages_and_widgets/default_page.dart
@@ -17,24 +17,29 @@ class DefaultPage extends StatefulWidget {
class _DefaultPageState extends State<DefaultPage> {
late Timer _timer;
- List<MarkerData> markerList = [];
+ List<MarkerTemplate> markerList = [];
- // fetchMarkerData requests data from the update_map endpoint
- Future<void> fetchMarkerData() async {
+ // fetchMarkerTemplate requests data from the update_map endpoint
+ Future<void> fetchMarkerTemplate() async {
try {
// Custom HTTP client
HttpClient client = HttpClient()
..badCertificateCallback = // NB: temporary disable SSL certificate validation
(X509Certificate cert, String host, int port) => true;
+ // Request makers from API and wait for response
var request = await client.getUrl(Uri.parse(serverURI+mapEndpoint));
var response = await request.close();
- // Parse json response to list of MarkerData objects if request is ok
+ // Attempt to parse json if request is ok
if (response.statusCode == 200) {
var responseBody = await response.transform(utf8.decoder).join();
setState(() {
- markerList = parseMarkerData(responseBody);
+ // Parse JSON string from response body
+ List<dynamic> jsonData = json.decode(responseBody);
+
+ // Convert response from type List<dynamic> to List<MarkerTemplate>
+ markerList = jsonData.map((data) => MarkerTemplate.fromJson(data)).toList();
});
} else {
print('Request failed with status: ${response.statusCode}');
@@ -44,17 +49,17 @@ class _DefaultPageState extends State<DefaultPage> {
}
}
- // Timer initializer
+ // State initializer
@override
void initState() {
super.initState();
- // Call fetchMarkerData when the widget is first created
- fetchMarkerData();
+ // Call fetchMarkerTemplate when the widget is first created
+ fetchMarkerTemplate();
- // Schedule fetchMarkerData to run periodically based on fetchInterval const
+ // Schedule fetchMarkerTemplate to run periodically based on fetchInterval const
const Duration fiveMinutes = Duration(minutes: fetchInterval);
_timer = Timer.periodic(fiveMinutes, (timer) {
- fetchMarkerData();
+ fetchMarkerTemplate();
});
}
@@ -99,11 +104,11 @@ class _DefaultPageState extends State<DefaultPage> {
),
MarkerLayer(
// Dynamically allocate markers based on a list
- markers: markerList.map((MarkerData markerData) {
+ markers: markerList.map((MarkerTemplate MarkerTemplate) {
return Marker(
- width: markerData.size,
- height: markerData.size,
- point: markerData.location,
+ width: MarkerTemplate.size,
+ height: MarkerTemplate.size,
+ point: MarkerTemplate.location,
builder: (ctx) => GestureDetector(
onTap: () {
// NB: temporary print
@@ -112,9 +117,9 @@ class _DefaultPageState extends State<DefaultPage> {
},
child: Image.asset(
'assets/icons/circle-red.png', // Path to your custom icon asset
- color: markerData.color,
- width: markerData.radius,
- height: markerData.radius,
+ color: MarkerTemplate.color,
+ width: MarkerTemplate.size,
+ height: MarkerTemplate.size,
),
),
);
diff --git a/app/lib/pages_and_widgets/marker_data.dart b/app/lib/pages_and_widgets/marker_data.dart
index 66b0f252..1c3d6150 100644
--- a/app/lib/pages_and_widgets/marker_data.dart
+++ b/app/lib/pages_and_widgets/marker_data.dart
@@ -1,38 +1,127 @@
import 'package:flutter/material.dart';
import 'package:latlong2/latlong.dart';
-import 'dart:convert';
-// MarkerData holds data for the dynamically allocated markers
-class MarkerData {
- final LatLng location;
- final double size;
- final Color color;
- final double radius;
+// Sensor holds data about a single sensor
+class Sensor {
+ int id;
+ String type;
+ bool active;
- MarkerData({required this.location, required this.size, required this.color, required this.radius});
+ Sensor({required this.id, required this.type, required this.active});
+
+ factory Sensor.fromJson(Map<String, dynamic> json) {
+ return Sensor(
+ id: json['ID'],
+ type: json['type'],
+ active: json['active'],
+ );
+ }
}
-// parseMarkerData parses jsonData into an object of type MakerData
-List<MarkerData> parseMarkerData(String jsonString) {
- final parsed = json.decode(jsonString);
- return List<MarkerData>.from(parsed.map((data) => MarkerData(
- location: LatLng(data['latitude'], data['longitude']),
- size: data['size'].toDouble(),
- color: parseColor(data['color']),
- radius: data['radius'].toDouble(),
- )));
+// DateAndTime holds the date and time for a single measurement
+class DateAndTime {
+ int year;
+ int month;
+ int day;
+ int hour;
+ int minute;
+
+ DateAndTime({
+ required this.year,
+ required this.month,
+ required this.day,
+ required this.hour,
+ required this.minute,
+ });
+
+ factory DateAndTime.fromJson(Map<String, dynamic> json) {
+ return DateAndTime(
+ year: json['year'],
+ month: json['month'],
+ day: json['day'],
+ hour: json['hour'],
+ minute: json['minute'],
+ );
+ }
}
-// parseColor parses the color strings into Colors types
-Color parseColor(String colorString) {
- switch (colorString) {
- case 'blue':
- return Colors.blue;
- case 'red':
- return Colors.red;
- case 'green':
- return Colors.green;
- default:
- return Colors.black; // Default color if unrecognized
+// Measurement holds data related to a singular measurement taken
+// at a given time
+class Measurement {
+ double longitude;
+ double latitude;
+ DateAndTime datetime;
+ Sensor sensor;
+ double precipitation;
+ double thickness;
+ double maxWeight;
+ double safetyLevel;
+ double accuracy;
+
+ Measurement({
+ required this.longitude,
+ required this.latitude,
+ required this.datetime,
+ required this.sensor,
+ required this.precipitation,
+ required this.thickness,
+ required this.maxWeight,
+ required this.safetyLevel,
+ required this.accuracy,
+ });
+
+ factory Measurement.fromJson(Map<String, dynamic> json) {
+ return Measurement(
+ longitude: json['longitude'],
+ latitude: json['latitude'],
+ datetime: DateAndTime.fromJson(json['datetime']),
+ sensor: Sensor.fromJson(json['sensor']),
+ precipitation: json['precipitation'],
+ thickness: json['thickness'],
+ maxWeight: json['max_weight'],
+ safetyLevel: json['safety_level'],
+ accuracy: json['accuracy'],
+ );
}
-}
\ No newline at end of file
+}
+
+// MarkerTemplate holds all data required for rendering a marker
+class MarkerTemplate {
+ Measurement geoData;
+ LatLng location;
+ double size;
+ Color color;
+
+ MarkerTemplate({
+ required this.geoData,
+ required this.location,
+ required this.size,
+ required this.color
+ });
+
+ factory MarkerTemplate.fromJson(Map<String, dynamic> json) {
+ // Parse from JSON string to type Color
+ Color parsedColor = parseColor(json['color']);
+
+ return MarkerTemplate(
+ geoData: Measurement.fromJson(json['geo_data']),
+ location: LatLng(json['latitude'], json['longitude']),
+ size: json['size'],
+ color: parsedColor,
+ );
+ }
+
+ // parseColor parses the color strings into Colors types
+ static Color parseColor(String colorString) {
+ switch (colorString) {
+ case 'yellow':
+ return Colors.yellow;
+ case 'red':
+ return Colors.red;
+ case 'green':
+ return Colors.green;
+ default:
+ return Colors.black; // Default color if unrecognized
+ }
+ }
+}
diff --git a/server/__pycache__/data_structs.cpython-311.pyc b/server/__pycache__/data_structs.cpython-311.pyc
index 4163607b4b1b56fb78c7310f4a0863892bb42ce3..234ac85964595741b6de2f77e9d025cb0ae7b722 100644
GIT binary patch
delta 18
YcmaDU_fn2?IWI340}#yE$eF+o05kFgqyPW_
delta 18
YcmaDU_fn2?IWI340}zOB<V@fP05NR@BLDyZ
diff --git a/server/map/__pycache__/get_markers.cpython-311.pyc b/server/map/__pycache__/get_markers.cpython-311.pyc
index fe067d8d451136985eb529449e19ff358e97b22b..59bda76604761ffdecd11385bb472c5054fdf005 100644
GIT binary patch
delta 56
zcmX>ka!7=0IWI340}!my+sMVsDxY4Inwpmm5@29Zak#}?l$rwNnK;~HtK4kH%EJl(
DZ;A|W
delta 56
zcmX>ka!7=0IWI340}%WZ-^j(wD(_yDnwpmm5@29Zak#}Cl$rwNnK;~Hi`;C+%EJl(
Damoxz
diff --git a/server/map/get_markers.py b/server/map/get_markers.py
index fe91e6ce..1bcb9100 100644
--- a/server/map/get_markers.py
+++ b/server/map/get_markers.py
@@ -26,9 +26,9 @@ def get_markers():
precipitation=0.0, thickness=0.0, max_weight=0.0, safety_level=0.0, accuracy=4.0)
testData = [
- MarkerTemplate(measurement1, 30.0-measurement1.accuracy, "Green"),
- MarkerTemplate(measurement2, 10.0-measurement2.accuracy, "Red"),
- MarkerTemplate(measurement3, 20.0-measurement3.accuracy, "Yellow"),
+ MarkerTemplate(measurement1, 30.0-measurement1.accuracy, "green"),
+ MarkerTemplate(measurement2, 10.0-measurement2.accuracy, "red"),
+ MarkerTemplate(measurement3, 20.0-measurement3.accuracy, "yellow"),
]
# NB: return test data as JSON
--
GitLab