create tapable header that will switch between bar chart and percentage

WIP - add secondary header for 7 days

closed #21

Shared/views/HeaderPercView.swift

@@ -0,0 +1,82 @@
+//
+//  HeaderPercView.swift
+//  Feels (iOS)
+//
+//  Created by Trey Tartt on 1/29/22.
+//
+
+import SwiftUI
+
+struct HeaderPercView: View {
+    typealias model = (mood: Mood, total: Int, percent: Float)
+    var entries = [model]()
+    let backDays: Int
+    
+    init(fakeData: Bool, backDays: Int) {
+        self.backDays = backDays
+        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])
+        }
+        
+        let totalEntryCount = moodEntries?.count ?? 0
+        
+        if let moodEntries = moodEntries {
+            for (_, mood) in Mood.allValues.enumerated() {
+               
+                let moodEntries = moodEntries.filter({
+                    Int($0.moodValue) == mood.rawValue
+                })
+                
+                let total = moodEntries.count
+                
+                let perc = (Float(total) / Float(totalEntryCount)) * 100
+                
+                
+                entries.append((mood, total, perc))
+            }
+        }
+        
+        entries = entries.sorted(by: {
+            $0.0.rawValue > $1.0.rawValue
+        })
+    }
+    
+    var body: some View {
+        VStack {
+            Spacer()
+            HStack {
+                ForEach(entries.prefix(3), id: \.0) { model in
+                    Text("\(model.percent, specifier: "%.0f")%")
+                        .font(.title)
+                        .fontWeight(.bold)
+                        .foregroundColor(model.mood.color)
+                        .frame(maxWidth: .infinity)
+                }
+            }
+            Spacer()
+            HStack {
+                ForEach(entries.suffix(2), id: \.0) { model in
+                    Text("\(model.percent, specifier: "%.0f")%")
+                        .font(.title)
+                        .fontWeight(.bold)
+                        .foregroundColor(model.mood.color)
+                        .frame(maxWidth: .infinity)
+                }
+            }
+            Spacer()
+        }
+    }
+}
+
+struct HeaderPercView_Previews: PreviewProvider {
+    static var previews: some View {
+        SmallRollUpHeaderView(fakeData: true, backDays: 30)
+    }
+}