95 lines
2.9 KiB
Dart
95 lines
2.9 KiB
Dart
import 'dart:convert';
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import 'dart:async';
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import 'package:http/http.dart' as http;
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import 'package:shared_preferences/shared_preferences.dart';
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import 'package:charts_flutter/flutter.dart' as charts;
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class GraphData {
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List<charts.Series> data = new List<charts.Series>();
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Future<List<charts.Series>> getGraphData(String graphType) async {
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/// Graph types:
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/// - total_last_week
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/// - avg_spend_last_week
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/// - total_last_month
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/// - avg_spend_last_month
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///
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/// HTTP POST request sample:
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/// {"graph":"total_last_week","session_key":"blahblahblah"}
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charts.Series<dynamic, DateTime> dataSeries = new charts.Series<dynamic, DateTime>();
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final url = "https://dev.peartrade.org/api/v1/customer/graphs";
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SharedPreferences preferences = await SharedPreferences.getInstance();
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Map<String, String> body = {
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'graph': graphType,
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'session_key': preferences.get('LastToken'),
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};
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final response = await http.post(
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url,
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body: json.encode(body),
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);
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if (response.statusCode == 200) {
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final responseJson = jsonDecode(response.body);
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final List<dynamic> labels = responseJson['graph']['labels'];
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final List<dynamic> data = responseJson['graph']['data'];
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// final List<String> bounds = responseJson['graph']['bounds']; // why is this even returned?
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/*
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final data = [
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new TimeSeriesSales(new DateTime(2017, 9, 19), 5),
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new TimeSeriesSales(new DateTime(2017, 9, 26), 25),
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new TimeSeriesSales(new DateTime(2017, 10, 3), 100),
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new TimeSeriesSales(new DateTime(2017, 10, 10), 75),
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];
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*/
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List<TimeSeriesSpend> timeSeriesSpendList = new List<TimeSeriesSpend>();
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for (int i = 0; i < labels.length; i++) {
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print(DateTime.parse(labels[i]));
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timeSeriesSpendList.add(new TimeSeriesSpend(i, DateTime(i)));
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// timeSeriesSpendList.add(new TimeSeriesSpend(data[i], DateTime.parse(labels[i])));
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}
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return [
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new charts.Series<TimeSeriesSpend, DateTime>(
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id: 'Spend',
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colorFn: (_, __) => charts.MaterialPalette.blue.shadeDefault,
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domainFn: (TimeSeriesSpend spend, _) => spend.time,
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measureFn: (TimeSeriesSpend spend, _) => spend.spend,
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data: timeSeriesSpendList,
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)
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];
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/*
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new charts.Series<TimeSeriesSales, DateTime>(
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id: 'Sales',
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colorFn: (_, __) => charts.MaterialPalette.blue.shadeDefault,
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domainFn: (TimeSeriesSales sales, _) => sales.time,
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measureFn: (TimeSeriesSales sales, _) => sales.sales,
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data: data,
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)*/
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// print(labels[5]);
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// print(data[5]);
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} else {
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final errorMessage = json.decode(response.body)['message'];
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print("Error: " + errorMessage);
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return null;
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}
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}
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}
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class TimeSeriesSpend {
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final DateTime time;
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final int spend;
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TimeSeriesSpend(this.spend, this.time);
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}
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