Open statistics from home screen stats area (#564)

* Open statistics from home screen by tapping the stats area

Closes #563

Modal (home screen tap) shows Done button, menu uses navigation push
with native back chevron, and tab shows only Refresh.

---------

Co-authored-by: codebymini <daniel@codebymini.se>

LoopFollow/Settings/SettingsMenuView.swift

@@ -195,7 +195,7 @@ struct AggregatedStatsViewWrapper: View {
     var body: some View {
         Group {
             if let mainVC = mainViewController {
-                AggregatedStatsView(viewModel: AggregatedStatsViewModel(mainViewController: mainVC))
+                AggregatedStatsContentView(mainViewController: mainVC)
             } else {
                 Text("Loading stats...")
                     .onAppear {

LoopFollow/Stats/AggregatedStatsView.swift

@@ -7,6 +7,7 @@ import UIKit
 struct AggregatedStatsView: View {
     @ObservedObject var viewModel: AggregatedStatsViewModel
     @Environment(\.dismiss) var dismiss
+    var onDismiss: (() -> Void)?
     @State private var showGMI: Bool
     @State private var showStdDev: Bool
     @State private var startDate: Date
@@ -17,8 +18,9 @@ struct AggregatedStatsView: View {
     @State private var loadingTimer: Timer?
     @State private var timeoutTimer: Timer?
 
-    init(viewModel: AggregatedStatsViewModel) {
+    init(viewModel: AggregatedStatsViewModel, onDismiss: (() -> Void)? = nil) {
         self.viewModel = viewModel
+        self.onDismiss = onDismiss
         _showGMI = State(initialValue: Storage.shared.showGMI.value)
         _showStdDev = State(initialValue: Storage.shared.showStdDev.value)
 
@@ -105,6 +107,11 @@ struct AggregatedStatsView: View {
         }
         .navigationBarTitleDisplayMode(.inline)
         .toolbar {
+            if let onDismiss {
+                ToolbarItem(placement: .navigationBarLeading) {
+                    Button("Done", action: onDismiss)
+                }
+            }
             ToolbarItem(placement: .navigationBarTrailing) {
                 Button("Refresh") {
                     loadingError = false
@@ -163,6 +170,38 @@ struct AggregatedStatsView: View {
     }
 }
 
+struct AggregatedStatsContentView: View {
+    @StateObject private var viewModel: AggregatedStatsViewModel
+    private let onDismiss: (() -> Void)?
+
+    init(mainViewController: MainViewController?, onDismiss: (() -> Void)? = nil) {
+        _viewModel = StateObject(wrappedValue: AggregatedStatsViewModel(mainViewController: mainViewController))
+        self.onDismiss = onDismiss
+    }
+
+    var body: some View {
+        AggregatedStatsView(viewModel: viewModel, onDismiss: onDismiss)
+            .preferredColorScheme(Storage.shared.appearanceMode.value.colorScheme)
+    }
+}
+
+struct AggregatedStatsModalView: View {
+    @Environment(\.dismiss) private var dismiss
+
+    let mainViewController: MainViewController?
+
+    var body: some View {
+        NavigationView {
+            AggregatedStatsContentView(
+                mainViewController: mainViewController,
+                onDismiss: { dismiss() }
+            )
+            .navigationBarTitleDisplayMode(.inline)
+        }
+        .preferredColorScheme(Storage.shared.appearanceMode.value.colorScheme)
+    }
+}
+
 struct StatCard: View {
     let title: String
     let value: String

LoopFollow/ViewControllers/MainViewController.swift

@@ -196,6 +196,10 @@ class MainViewController: UIViewController, UITableViewDataSource, ChartViewDele
         updateGraphVisibility()
         statsView.isHidden = !Storage.shared.showStats.value
 
+        // Tap on stats view to open full statistics screen
+        let statsTap = UITapGestureRecognizer(target: self, action: #selector(statsViewTapped))
+        statsView.addGestureRecognizer(statsTap)
+
         BGChart.delegate = self
         BGChartFull.delegate = self
 
@@ -667,7 +671,7 @@ class MainViewController: UIViewController, UITableViewDataSource, ChartViewDele
             return treatmentsVC
 
         case .stats:
-            let statsVC = UIHostingController(rootView: AggregatedStatsView(viewModel: AggregatedStatsViewModel(mainViewController: nil)))
+            let statsVC = UIHostingController(rootView: AggregatedStatsContentView(mainViewController: nil))
             let navController = UINavigationController(rootViewController: statsVC)
             navController.tabBarItem = UITabBarItem(title: item.displayName, image: UIImage(systemName: item.icon), tag: tag)
             return navController
@@ -722,6 +726,22 @@ class MainViewController: UIViewController, UITableViewDataSource, ChartViewDele
         return nil
     }
 
+    @objc private func statsViewTapped() {
+        #if !targetEnvironment(macCatalyst)
+            let position = Storage.shared.position(for: .stats).normalized
+            if position != .menu, let tabIndex = position.tabIndex, let tbc = tabBarController {
+                tbc.selectedIndex = tabIndex
+                return
+            }
+        #endif
+
+        let statsModalView = AggregatedStatsModalView(mainViewController: self)
+        let hostingController = UIHostingController(rootView: statsModalView)
+        hostingController.overrideUserInterfaceStyle = Storage.shared.appearanceMode.value.userInterfaceStyle
+        hostingController.modalPresentationStyle = .fullScreen
+        present(hostingController, animated: true)
+    }
+
     private func createViewController(for item: TabItem, position: TabPosition, storyboard: UIStoryboard) -> UIViewController? {
         let tag = position.tabIndex ?? 0
 
@@ -756,7 +776,7 @@ class MainViewController: UIViewController, UITableViewDataSource, ChartViewDele
             return treatmentsVC
 
         case .stats:
-            let statsVC = UIHostingController(rootView: AggregatedStatsView(viewModel: AggregatedStatsViewModel(mainViewController: self)))
+            let statsVC = UIHostingController(rootView: AggregatedStatsContentView(mainViewController: self))
             let navController = UINavigationController(rootViewController: statsVC)
             navController.tabBarItem = UITabBarItem(title: item.displayName, image: UIImage(systemName: item.icon), tag: tag)
             return navController

LoopFollow/ViewControllers/MoreMenuViewController.swift

@@ -314,9 +314,8 @@ class MoreMenuViewController: UIViewController {
             return
         }
 
-        let statsVC = UIHostingController(
-            rootView: AggregatedStatsView(viewModel: AggregatedStatsViewModel(mainViewController: mainVC))
-        )
+        let statsView = AggregatedStatsContentView(mainViewController: mainVC)
+        let statsVC = UIHostingController(rootView: statsView)
         statsVC.overrideUserInterfaceStyle = Storage.shared.appearanceMode.value.userInterfaceStyle
         navigationController?.pushViewController(statsVC, animated: true)
     }