add personal charts project

layout of header graph view

Shared/views/HeaderStatsView.swift

@@ -53,6 +53,8 @@ struct HeaderStatsView : UIViewRepresentable {
         
         chart.xAxis.drawGridLinesEnabled = false
         chart.leftAxis.drawGridLinesEnabled = false
+        chart.rightAxis.drawGridLinesEnabled = false
+
         chart.leftAxis.axisLineColor = .clear
         chart.rightAxis.axisLineColor = .clear
         
@@ -61,29 +63,43 @@ struct HeaderStatsView : UIViewRepresentable {
         
         chart.drawBordersEnabled = false
         chart.drawMarkers = false
-//        chart.yAxis.drawGridLinesEnabled = false
-        chart.rightAxis.drawGridLinesEnabled = false
         chart.borderColor = .clear
-        //it is convenient to form chart data in a separate func
-        chart.data = addData()
+        
+        let data = BarChartData()
+        let dataSet = dataSet()
+        data.append(dataSet)
+        
+        chart.data = data
+        dataSet.valueFormatter = DefaultValueFormatter(decimals: 0)
+        
         return chart
     }
     
     // this func is required to conform to UIViewRepresentable protocol
     func updateUIView(_ uiView: BarChartView, context: Context) {
-        //when data changes chartd.data update is required
-        uiView.data = addData()
+        let data = BarChartData()
+        let dataSet = dataSet()
+        data.append(dataSet)
+        uiView.data = data
+        
+        dataSet.valueFormatter = DefaultValueFormatter(decimals: 0)
     }
     
-    func addData() -> BarChartData{
-        let data = BarChartData()
-        //BarChartDataSet is an object that contains information about your data, styling and more
+    func dataSet() -> BarChartDataSet {
         let dataSet = BarChartDataSet(entries: entries)
+
         // change bars color to green
         dataSet.colors = Mood.allValues.map({ NSUIColor( $0.color ) })
-        //change data label
-        data.append(dataSet)
-        return data
+        dataSet.secondaryTextColor = UIColor.systemGray
+        dataSet.valueColors = [.white]
+        if let descriptor = UIFontDescriptor.preferredFontDescriptor(
+          withTextStyle: .body).withSymbolicTraits([.traitBold]) {
+            dataSet.valueFont = UIFont(descriptor: descriptor, size: 0)
+        } else {
+            dataSet.valueFont = UIFont.preferredFont(forTextStyle: .body)
+        }
+        
+        return dataSet
     }
     
     typealias UIViewType = BarChartView