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Shared2/Views/HeaderStatsView.swift

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+//
+//  HeaderStatsView.swift
+//  Feels
+//
+//  Created by Trey Tartt on 1/8/22.
+//
+
+import SwiftUI
+import Charts
+
+struct HeaderStatsView : UIViewRepresentable {
+    //Bar chart accepts data as array of BarChartDataEntry objects
+    var entries : [BarChartDataEntry]
+    var moodTints: [Color]
+    var textColor: Color
+    
+    var tmpHolderToMakeViewDiffefrent: Color
+    
+    init(fakeData: Bool, backDays: Int, moodTint: [Color], textColor: Color) {
+        self.moodTints = moodTint
+        self.textColor = textColor
+        guard moodTints.count == 5 else {
+            fatalError("mood tint count dont match")
+        }
+        self.tmpHolderToMakeViewDiffefrent = Color.random()
+        entries = [BarChartDataEntry]()
+        
+        var moodEntries: [MoodEntry]?
+
+        if fakeData {
+            moodEntries = PersistenceController.shared.randomEntries(count: 10)
+        } else {
+            var daysAgo = Calendar.current.date(byAdding: .day, value: -backDays, to: Date())!
+            daysAgo = Calendar.current.date(bySettingHour: 0, minute: 0, second: 0, of: daysAgo)!
+            
+            moodEntries = PersistenceController.shared.getData(startDate: daysAgo, endDate: Date(), includedDays: [1,2,3,4,5,6,7])
+        }
+        if let moodEntries = moodEntries {
+            for (index, mood) in Mood.allValues.enumerated() {
+                entries.append(
+                    BarChartDataEntry(x: Double(index + 1),
+                                      y: Double(moodEntries.filter({
+                                          Int($0.moodValue) == mood.rawValue
+                                      }).count))
+                )
+            }
+        }
+    }
+    
+    // this func is required to conform to UIViewRepresentable protocol
+    func makeUIView(context: Context) -> BarChartView {
+        //crate new chart
+        let chart = BarChartView()
+        chart.drawGridBackgroundEnabled = false
+        chart.drawValueAboveBarEnabled = false
+
+        chart.xAxis.drawAxisLineEnabled = false
+        chart.xAxis.labelTextColor = .clear
+
+        chart.rightAxis.drawAxisLineEnabled = false
+        chart.rightAxis.labelTextColor = .clear
+
+        chart.leftAxis.drawAxisLineEnabled = false
+        chart.leftAxis.labelTextColor = .clear
+
+        chart.xAxis.drawGridLinesEnabled = false
+        chart.leftAxis.drawGridLinesEnabled = false
+        chart.rightAxis.drawGridLinesEnabled = false
+
+        chart.leftAxis.axisLineColor = .clear
+        chart.rightAxis.axisLineColor = .clear
+
+        chart.legend.textColor = .clear
+        chart.legend.enabled = false
+
+        chart.drawBordersEnabled = false
+        chart.drawMarkers = false
+        chart.borderColor = .clear
+
+        chart.doubleTapToZoomEnabled = false
+        chart.leftAxis.axisMinimum = 0
+        
+        chart.minOffset = 0
+        
+        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) {
+        let data = BarChartData()
+        let dataSet = dataSet()
+        data.append(dataSet)
+        uiView.data = data
+        
+        dataSet.valueFormatter = DefaultValueFormatter(decimals: 0)
+    }
+    
+    func dataSet() -> BarChartDataSet {
+        let dataSet = BarChartDataSet(entries: entries)
+
+        // change bars color to green
+        dataSet.colors = moodTints.map({ NSUIColor( $0 ) })
+        dataSet.secondaryTextColor = UIColor(textColor)
+        dataSet.valueColors = [UIColor(textColor)]
+        dataSet.highlightAlpha = 0.0
+        dataSet.roundedCornerValue = 10
+        
+        if let descriptor = UIFontDescriptor.preferredFontDescriptor(
+          withTextStyle: .title1).withSymbolicTraits([.traitBold]) {
+            dataSet.valueFont = UIFont(descriptor: descriptor, size: 0)
+        } else {
+            dataSet.valueFont = UIFont.preferredFont(forTextStyle: .title1)
+        }
+        
+        return dataSet
+    }
+    
+    typealias UIViewType = BarChartView
+    
+}
+
+
+
+struct HeaderStatsView_Previews: PreviewProvider {
+    static var previews: some View {
+        HeaderStatsView(fakeData: true, backDays: 30, moodTint: [Color.green, Color.blue, Color.yellow, Color.red, Color.orange], textColor: .white).frame(minHeight: 85, maxHeight: 90)
+    }
+}