KisaniCal/Models/ExerciseModels.swift

@@ -262,6 +262,58 @@ class WorkoutViewModel: ObservableObject {
         Set(workoutDates).count
     }
 
+    // MARK: - Streak-banner breakdowns (this week / this year / comparison)
+
+    /// Workout days in the week `offset` weeks from now (0 = current, -1 = last).
+    private func workoutCount(inWeekOffset offset: Int) -> Int {
+        let cal = Calendar.current
+        guard let ref = cal.date(byAdding: .weekOfYear, value: offset, to: Date()),
+              let wk = cal.dateInterval(of: .weekOfYear, for: ref) else { return 0 }
+        let set = Set(workoutDates)
+        return (0..<7).reduce(0) { acc, i in
+            guard let d = cal.date(byAdding: .day, value: i, to: wk.start) else { return acc }
+            return acc + (set.contains(iso.string(from: d)) ? 1 : 0)
+        }
+    }
+
+    var workoutsThisWeek: Int { workoutCount(inWeekOffset: 0) }
+    var workoutsLastWeek: Int { workoutCount(inWeekOffset: -1) }
+
+    var workoutsThisYear: Int {
+        let cal = Calendar.current
+        let year = cal.component(.year, from: Date())
+        return Set(workoutDates).filter {
+            guard let d = iso.date(from: $0) else { return false }
+            return cal.component(.year, from: d) == year
+        }.count
+    }
+
+    /// 7 flags for the current week (calendar week order) — true if worked out that day.
+    var currentWeekDays: [Bool] {
+        let cal = Calendar.current
+        guard let wk = cal.dateInterval(of: .weekOfYear, for: Date()) else {
+            return Array(repeating: false, count: 7)
+        }
+        let set = Set(workoutDates)
+        return (0..<7).map { i in
+            guard let d = cal.date(byAdding: .day, value: i, to: wk.start) else { return false }
+            return set.contains(iso.string(from: d))
+        }
+    }
+
+    /// 12 flags for the current year — true if ≥1 workout that month.
+    var currentYearMonths: [Bool] {
+        let cal = Calendar.current
+        let year = cal.component(.year, from: Date())
+        var months = Array(repeating: false, count: 12)
+        for s in workoutDates {
+            guard let d = iso.date(from: s), cal.component(.year, from: d) == year else { continue }
+            let m = cal.component(.month, from: d) - 1
+            if (0..<12).contains(m) { months[m] = true }
+        }
+        return months
+    }
+
     private let iso: DateFormatter = {
         let f = DateFormatter(); f.dateFormat = "yyyy-MM-dd"; return f
     }()

KisaniCal/Views/WorkoutView.swift

@@ -146,7 +146,7 @@ struct WorkoutView: View {
                     .moveDisabled(true)
 
                 // ── Streak ──
-                StreakBannerView(streak: vm.streakDays)
+                StreakBannerView(vm: vm)
                     .listRowBackground(Color.clear)
                     .listRowSeparator(.hidden)
                     .listRowInsets(EdgeInsets(top: 0, leading: 14, bottom: 10, trailing: 14))
@@ -908,28 +908,28 @@ struct RestDayCard: View {
 }
 
 // MARK: - Streak Banner
+// Swipeable: this week → this year → this-week-vs-last-week.
 struct StreakBannerView: View {
     @Environment(\.colorScheme) private var cs
-    let streak: Int
+    @ObservedObject var vm: WorkoutViewModel
+    @State private var page = 0
 
     var body: some View {
-        HStack(spacing: 0) {
-            VStack(alignment: .leading, spacing: 2) {
-                Text("\(streak)")
-                    .font(AppFonts.mono(28, weight: .bold))
-                    .foregroundColor(AppColors.text(cs))
-                Text("day streak")
-                    .font(AppFonts.sans(11))
-                    .foregroundColor(AppColors.text3(cs))
+        VStack(spacing: 8) {
+            TabView(selection: $page) {
+                weekPage.tag(0)
+                yearPage.tag(1)
+                comparePage.tag(2)
             }
-            Spacer()
-            // 7-day tick bar — current week progress
-            HStack(spacing: 3) {
-                ForEach(0..<7, id: \.self) { i in
-                    let filled = streak > 0 && i < (streak % 7 == 0 ? 7 : streak % 7)
-                    RoundedRectangle(cornerRadius: 1.5)
-                        .fill(filled ? AppColors.accent : AppColors.borderHi(cs))
-                        .frame(width: 18, height: 3)
+            .tabViewStyle(.page(indexDisplayMode: .never))
+            .frame(height: 50)
+
+            // Page dots
+            HStack(spacing: 5) {
+                ForEach(0..<3, id: \.self) { i in
+                    Circle()
+                        .fill(i == page ? AppColors.accent : AppColors.borderHi(cs))
+                        .frame(width: 5, height: 5)
                 }
             }
         }
@@ -937,6 +937,76 @@ struct StreakBannerView: View {
         .padding(.vertical, 13)
         .cardStyle()
     }
+
+    // Page 1 — this week (per-day ticks)
+    private var weekPage: some View {
+        HStack(spacing: 0) {
+            statBlock(value: "\(vm.workoutsThisWeek)", label: "this week")
+            Spacer()
+            HStack(spacing: 3) {
+                ForEach(Array(vm.currentWeekDays.enumerated()), id: \.offset) { _, done in
+                    RoundedRectangle(cornerRadius: 1.5)
+                        .fill(done ? AppColors.accent : AppColors.borderHi(cs))
+                        .frame(width: 18, height: 3)
+                }
+            }
+        }
+    }
+
+    // Page 2 — this year (month ticks) + all-time total
+    private var yearPage: some View {
+        HStack(spacing: 0) {
+            statBlock(value: "\(vm.workoutsThisYear)", label: "this year")
+            Spacer()
+            VStack(alignment: .trailing, spacing: 5) {
+                HStack(spacing: 2) {
+                    ForEach(Array(vm.currentYearMonths.enumerated()), id: \.offset) { _, active in
+                        RoundedRectangle(cornerRadius: 1)
+                            .fill(active ? AppColors.accent : AppColors.borderHi(cs))
+                            .frame(width: 9, height: 3)
+                    }
+                }
+                Text("\(vm.streakDays) all-time")
+                    .font(AppFonts.mono(9))
+                    .foregroundColor(AppColors.text3(cs))
+            }
+        }
+    }
+
+    // Page 3 — this week vs last week
+    private var comparePage: some View {
+        let delta = vm.workoutsThisWeek - vm.workoutsLastWeek
+        let deltaColor = delta > 0 ? AppColors.green : (delta < 0 ? AppColors.accent : AppColors.text3(cs))
+        return HStack(spacing: 0) {
+            statBlock(value: "\(vm.workoutsThisWeek)", label: "this week")
+            Spacer()
+            VStack(alignment: .trailing, spacing: 3) {
+                HStack(spacing: 4) {
+                    Image(systemName: delta > 0 ? "arrow.up.right" : (delta < 0 ? "arrow.down.right" : "equal"))
+                        .font(.system(size: 10, weight: .bold))
+                    Text(delta == 0
+                         ? "same as last week"
+                         : "\(abs(delta)) \(delta > 0 ? "more" : "fewer") than last week")
+                        .font(AppFonts.mono(10, weight: .semibold))
+                }
+                .foregroundColor(deltaColor)
+                Text("last week: \(vm.workoutsLastWeek)")
+                    .font(AppFonts.mono(9))
+                    .foregroundColor(AppColors.text3(cs))
+            }
+        }
+    }
+
+    private func statBlock(value: String, label: String) -> some View {
+        VStack(alignment: .leading, spacing: 2) {
+            Text(value)
+                .font(AppFonts.mono(28, weight: .bold))
+                .foregroundColor(AppColors.text(cs))
+            Text(label)
+                .font(AppFonts.sans(11))
+                .foregroundColor(AppColors.text3(cs))
+        }
+    }
 }
 
 // MARK: - Exercise Card