Add "discoveries" chart

android/gradle.properties

 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
-app.versionName=0.0.19
-app.versionCode=19
+app.versionName=0.0.20
+app.versionCode=20

assets/translations/en.json

@@ -12,6 +12,8 @@
   "counts_by_day": "Counts by day ({daysCount} days)",
   "counts_by_hour": "Counts by hour ({daysCount} days)",
 
+  "discoveries_title": "Discoveries ({daysCount} days)",
+
   "MON": "MON",
   "TUE": "TUE",
   "WED": "WED",

assets/translations/fr.json

@@ -12,6 +12,8 @@
   "counts_by_day": "Écoutes par jour ({daysCount} jours)",
   "counts_by_hour": "Écoutes par heure ({daysCount} jours)",
 
+  "discoveries_title": "Découvertes ({daysCount} jours)",
+
   "MON": "LUN",
   "TUE": "MAR",
   "WED": "MER",

fastlane/metadata/android/en-US/changelogs/20.txt

+Add discoveries chart.

fastlane/metadata/android/fr-FR/changelogs/20.txt

+Ajout du graphique des découvertes.

lib/models/discoveries.dart

+import 'dart:convert';
+
+class DiscoveriesDataValue {
+  final int newArtistsCount;
+  final int newTracksCount;
+
+  const DiscoveriesDataValue({required this.newArtistsCount, required this.newTracksCount});
+
+  factory DiscoveriesDataValue.fromJson(Map<String, dynamic> json) {
+    return DiscoveriesDataValue(
+      newArtistsCount: json['new-artists'] as int,
+      newTracksCount: json['new-tracks'] as int,
+    );
+  }
+}
+
+class DiscoveriesData {
+  final Map<String, DiscoveriesDataValue> data;
+
+  const DiscoveriesData({
+    required this.data,
+  });
+
+  factory DiscoveriesData.fromJson(Map<String, dynamic> json) {
+    Map<String, DiscoveriesDataValue> data = {};
+
+    json.keys.forEach((date) {
+      DiscoveriesDataValue value = DiscoveriesDataValue(
+        newArtistsCount: json[date]['new-artists'] as int,
+        newTracksCount: json[date]['new-tracks'] as int,
+      );
+
+      data[date] = value;
+    });
+
+    return DiscoveriesData(data: data);
+  }
+
+  factory DiscoveriesData.createEmpty() {
+    return DiscoveriesData.fromJson({});
+  }
+
+  String toString() {
+    Map<String, Map<String, int>> map = {};
+
+    this.data.keys.forEach((element) {
+      DiscoveriesDataValue? item = this.data[element];
+      map[element] = {
+        'new-artists': item != null ? item.newArtistsCount : 0,
+        'new-tracks': item != null ? item.newTracksCount : 0,
+      };
+    });
+
+    return jsonEncode(map);
+  }
+}

lib/network/scrobbles_api.dart

@@ -3,6 +3,7 @@ import 'package:http/http.dart' as http;
 
 import '../models/counts_by_day.dart';
 import '../models/counts_by_hour.dart';
+import '../models/discoveries.dart';
 import '../models/statistics.dart';
 import '../models/timeline.dart';
 
@@ -56,4 +57,16 @@ class ScrobblesApi {
       throw Exception('Failed to get data from API.');
     }
   }
+
+  static Future<DiscoveriesData> fetchDiscoveries(int daysCount) async {
+    final String url = baseUrl + '/data/' + daysCount.toString() + '/news';
+    print('fetching ' + url);
+    final response = await http.get(Uri.parse(url));
+
+    if (response.statusCode == 200) {
+      return DiscoveriesData.fromJson(jsonDecode(response.body) as Map<String, dynamic>);
+    } else {
+      throw Exception('Failed to get data from API.');
+    }
+  }
 }

lib/ui/screens/main_screen.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 
 import '../widgets/main_screen/counts_by_day_card.dart';
 import '../widgets/main_screen/counts_by_hour_card.dart';
+import '../widgets/main_screen/discoveries_card.dart';
 import '../widgets/main_screen/statistics_card.dart';
 import '../widgets/main_screen/timeline_card.dart';
 
@@ -21,6 +22,8 @@ class MainScreen extends StatelessWidget {
           const SizedBox(height: 8),
           const ChartTimelineCard(),
           const SizedBox(height: 8),
+          const ChartDiscoveriesCard(),
+          const SizedBox(height: 8),
           const ChartCountsByDayCard(),
           const SizedBox(height: 8),
           const ChartCountsByHourCard(),

lib/ui/widgets/charts/custom_bar_chart.dart

@@ -54,15 +54,19 @@ class CustomBarChart extends StatelessWidget {
 
   BarChartGroupData getBarItem(
       {required int x,
-      required double value,
-      required Color barColor,
+      required List<double> values,
+      required List<Color> barColors,
       required double barWidth}) {
-    final gradient = this.getGradient(barColor, value, this.getMaxCountsValue());
-    final borderColor = barColor.darken(20);
+    List<BarChartRodData> barRods = [];
 
-    return BarChartGroupData(
-      x: x,
-      barRods: [
+    for (int i = 0; i < values.length; i++) {
+      double value = values[i];
+      Color barColor = barColors[i];
+
+      final gradient = this.getGradient(barColor, value, this.getMaxCountsValue());
+      final borderColor = barColor.darken(20);
+
+      barRods.add(
         BarChartRodData(
           toY: value,
           color: barColor,
@@ -73,7 +77,12 @@ class CustomBarChart extends StatelessWidget {
             color: borderColor,
           ),
         ),
-      ],
+      );
+    }
+
+    return BarChartGroupData(
+      x: x,
+      barRods: barRods,
     );
   }
 

lib/ui/widgets/main_screen/counts_by_day_chart.dart

@@ -82,8 +82,8 @@ class CountsByDayCardContentChart extends CustomBarChart {
 
         data.add(this.getBarItem(
           x: day,
-          value: counts,
-          barColor: barColor,
+          values: [counts],
+          barColors: [barColor],
           barWidth: barWidth,
         ));
       }

lib/ui/widgets/main_screen/counts_by_hour_chart.dart

@@ -53,8 +53,8 @@ class CountsByHourCardContentChart extends CustomBarChart {
       if (counts != null) {
         data.add(getBarItem(
           x: day,
-          value: counts,
-          barColor: barColor,
+          values: [counts],
+          barColors: [barColor],
           barWidth: barWidth,
         ));
       }

lib/ui/widgets/main_screen/discoveries_card.dart

+import 'dart:convert';
+
+import 'package:flutter/material.dart';
+
+import '../../../models/discoveries.dart';
+import '../../../network/scrobbles_api.dart';
+import '../../../ui/widgets/error.dart';
+import '../../../ui/widgets/main_screen/discoveries_content.dart';
+
+class ChartDiscoveriesCard extends StatelessWidget {
+  const ChartDiscoveriesCard({super.key});
+
+  @override
+  Widget build(BuildContext context) {
+    final int daysCount = 14;
+    late Future<DiscoveriesData> futureTimeline = ScrobblesApi.fetchDiscoveries(daysCount);
+
+    return FutureBuilder<DiscoveriesData>(
+      future: futureTimeline,
+      builder: (context, snapshot) {
+        if (snapshot.hasError) {
+          return ShowErrorWidget(message: '${snapshot.error}');
+        }
+
+        return Card(
+          elevation: 2,
+          shadowColor: Theme.of(context).colorScheme.shadow,
+          color: Theme.of(context).colorScheme.surface,
+          shape: const RoundedRectangleBorder(
+            borderRadius: BorderRadius.all(
+              Radius.circular(12),
+            ),
+          ),
+          child: Padding(
+            padding: const EdgeInsets.all(12.0),
+            child: ChartDiscoveriesCardContent(
+              daysCount: daysCount,
+              chartData: snapshot.hasData
+                  ? DiscoveriesData.fromJson(jsonDecode(snapshot.data.toString()))
+                  : DiscoveriesData.createEmpty(),
+              isLoading: !snapshot.hasData,
+            ),
+          ),
+        );
+      },
+    );
+  }
+}

lib/ui/widgets/main_screen/discoveries_chart.dart

+import 'package:flutter/material.dart';
+import 'package:fl_chart/fl_chart.dart';
+
+import '../../../config/app_colors.dart';
+import '../../../models/discoveries.dart';
+import '../../../utils/color_extensions.dart';
+import '../../../ui/widgets/charts/custom_bar_chart.dart';
+
+class ChartDiscoveries extends CustomBarChart {
+  final DiscoveriesData chartData;
+
+  ChartDiscoveries({super.key, required this.chartData});
+
+  final double chartHeight = 120.0;
+  final double verticalTicksInterval = 10;
+
+  @override
+  Widget build(BuildContext context) {
+    return Container(
+      height: this.chartHeight,
+      child: LayoutBuilder(builder: (context, constraints) {
+        return getBarChart(
+          barWidth: this.getBarWidth(constraints.maxWidth, this.chartData.data.keys.length),
+          backgroundColor: Theme.of(context).colorScheme.onSurface,
+        );
+      }),
+    );
+  }
+
+  double getMaxCountsValue() {
+    double maxValue = 0;
+
+    this.chartData.data.keys.forEach((key) {
+      DiscoveriesDataValue? value = this.chartData.data[key];
+      if (value != null) {
+        double newArtistsCount = value.newArtistsCount.toDouble();
+        double newTracksCount = value.newTracksCount.toDouble();
+
+        if (newArtistsCount > maxValue) {
+          maxValue = newArtistsCount;
+        }
+        if (newTracksCount > maxValue) {
+          maxValue = newTracksCount;
+        }
+      }
+    });
+
+    return maxValue;
+  }
+
+  List<BarChartGroupData> getDataCounts(double barWidth) {
+    List<BarChartGroupData> data = [];
+
+    final newArtistsBarColor = AppColors.contentColorGreen.darken(20);
+    final newTracksBarColor = AppColors.contentColorBlue.darken(20);
+
+    this.chartData.data.keys.forEach((key) {
+      DiscoveriesDataValue? value = this.chartData.data[key];
+      if (value != null) {
+        final int date = DateTime.parse(key).millisecondsSinceEpoch;
+
+        data.add(this.getBarItem(
+          x: date,
+          values: [
+            value.newArtistsCount.toDouble(),
+            value.newTracksCount.toDouble(),
+          ],
+          barColors: [
+            newArtistsBarColor,
+            newTracksBarColor,
+          ],
+          barWidth: barWidth / 2.5,
+        ));
+      }
+    });
+
+    return data;
+  }
+}

lib/ui/widgets/main_screen/discoveries_content.dart

+import 'dart:convert';
+
+import 'package:easy_localization/easy_localization.dart';
+import 'package:flutter/material.dart';
+
+import '../../../models/discoveries.dart';
+import '../../../ui/widgets/main_screen/discoveries_chart.dart';
+
+class ChartDiscoveriesCardContent extends StatelessWidget {
+  final int daysCount;
+  final DiscoveriesData chartData;
+  final bool isLoading;
+
+  const ChartDiscoveriesCardContent(
+      {super.key, required this.daysCount, required this.chartData, required this.isLoading});
+
+  @override
+  Widget build(BuildContext context) {
+    final TextTheme textTheme = Theme.of(context).primaryTextTheme;
+    final String placeholder = '⏳';
+
+    return Column(
+      mainAxisSize: MainAxisSize.min,
+      crossAxisAlignment: CrossAxisAlignment.start,
+      children: <Widget>[
+        Text(
+          'discoveries_title',
+          style: textTheme.titleLarge!.apply(fontWeightDelta: 2),
+        ).tr(
+          namedArgs: {
+            'daysCount': this.daysCount.toString(),
+          },
+        ),
+        const SizedBox(height: 8),
+        this.isLoading
+            ? Text(placeholder)
+            : ChartDiscoveries(
+                chartData: DiscoveriesData.fromJson(jsonDecode(this.chartData.toString())),
+              ),
+      ],
+    );
+  }
+}

lib/ui/widgets/main_screen/timeline_chart_counts.dart

@@ -55,8 +55,8 @@ class ChartTimelineCounts extends CustomBarChart {
 
         data.add(this.getBarItem(
           x: date,
-          value: counts,
-          barColor: barColor,
+          values: [counts],
+          barColors: [barColor],
           barWidth: barWidth,
         ));
       }

pubspec.yaml

@@ -3,7 +3,7 @@ description: Display scrobbles data and charts
 
 publish_to: 'none'
 
-version: 0.0.19+19
+version: 0.0.20+20
 
 environment:
   sdk: '^3.0.0'