add ActiveWorkoutSession logic, refactor Home, add additional sample data, add isDebug

WorkoutsPlus/Home/ActivityLog.swift

@@ -0,0 +1,129 @@
+//
+//  ActivityLog.swift
+//  WorkoutsPlus
+//
+//  Created by Felix Förtsch on 09.09.24.
+//
+// https://www.artemnovichkov.com/blog/github-contribution-graph-swift-charts
+// https://github.com/artemnovichkov/awesome-swift-charts
+
+import SwiftUI
+import Charts
+
+struct ActivityLog: View {
+		@State var activities: [Activity] = Activity.generate()
+		
+		var body: some View {
+				Chart(activities) { contribution in
+						RectangleMark(
+								xStart: .value("Start week", contribution.date, unit: .weekOfYear),
+								xEnd: .value("End week", contribution.date, unit: .weekOfYear),
+								yStart: .value("Start weekday", weekday(for: contribution.date)),
+								yEnd: .value("End weekday", weekday(for: contribution.date) + 1)
+						)
+						.clipShape(RoundedRectangle(cornerRadius: 4).inset(by: 2))
+						.foregroundStyle(by: .value("Count", contribution.count))
+				}
+				.chartPlotStyle { content in
+						content
+								.aspectRatio(aspectRatio, contentMode: .fit)
+				}
+				.chartForegroundStyleScale(range: Gradient(colors: colors))
+				.chartXAxis {
+						AxisMarks(position: .top, values: .stride(by: .month)) {
+								AxisValueLabel(format: .dateTime.month())
+										.foregroundStyle(Color(.label))
+						}
+				}
+				.chartYAxis {
+						AxisMarks(position: .leading, values: [1, 3, 5]) { value in
+								if let value = value.as(Int.self) {
+										AxisValueLabel {
+												// Symbols from Calendar.current starting with Monday
+//												Text(shortWeekdaySymbols[value - 1])
+										}
+										.foregroundStyle(Color(.label))
+								}
+						}
+				}
+				.chartYScale(domain: .automatic(includesZero: false, reversed: true))
+				.chartLegend {
+						HStack(spacing: 4) {
+								Text("Less")
+								ForEach(legendColors, id: \.self) { color in
+										color
+												.frame(width: 10, height: 10)
+												.cornerRadius(2)
+								}
+								Text("More")
+						}
+						.padding(4)
+						.foregroundStyle(Color(.label))
+						.font(.caption2)
+				}
+				
+				
+		}
+		
+		private func weekday(for date: Date) -> Int {
+				let weekday = Calendar.current.component(.weekday, from: date)
+				let adjustedWeekday = (weekday == 1) ? 7 : (weekday - 1)
+				return adjustedWeekday
+		}
+		
+		private var aspectRatio: Double {
+				if activities.isEmpty {
+						return 1
+				}
+				let firstDate = activities.first!.date
+				let lastDate = activities.last!.date
+				let firstWeek = Calendar.current.component(.weekOfYear, from: firstDate)
+				let lastWeek = Calendar.current.component(.weekOfYear, from: lastDate)
+				return Double(lastWeek - firstWeek + 1) / 7
+		}
+		
+		private var colors: [Color] {
+				(0...10).map { index in
+						if index == 0 {
+								return Color(.systemGray5)
+						}
+						return Color(.systemGreen).opacity(Double(index) / 10)
+				}
+		}
+		
+		private var legendColors: [Color] {
+				Array(stride(from: 0, to: colors.count, by: 2).map { colors[$0] })
+		}
+}
+
+#Preview {
+		ActivityLog()
+}
+
+struct Activity: Identifiable {
+		
+		let date: Date
+		let count: Int
+		
+		var id: Date {
+				date
+		}
+}
+
+extension Activity {
+		
+		static func generate() -> [Activity] {
+				var contributions: [Activity] = []
+				let toDate = Date.now
+				let fromDate = Calendar.current.date(byAdding: .day, value: -60, to: toDate)!
+				
+				var currentDate = fromDate
+				while currentDate <= toDate {
+						let contribution = Activity(date: currentDate, count: .random(in: 0...10))
+						contributions.append(contribution)
+						currentDate = Calendar.current.date(byAdding: .day, value: 1, to: currentDate)!
+				}
+				
+				return contributions
+		}
+}