Update QuizView.swift

Fixed a bug where a user could select another answer after an answer was previously selected.

Removed the Back button. There's no going back now! ;3

HAM Operator Quiz iPhone/HAM Operator Quiz iPhone.xcodeproj/project.pbxproj

@@ -0,0 +1,329 @@
+// !$*UTF8*$!
+{
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+			);
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+			projectRoot = "";
+			targets = (
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+				CLANG_ENABLE_OBJC_WEAK = YES;
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+				CLANG_WARN_BOOL_CONVERSION = YES;
+				CLANG_WARN_COMMA = YES;
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+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
+				CODE_SIGN_STYLE = Automatic;
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+				DEVELOPMENT_TEAM = 5RZLK3W7ZH;
+				ENABLE_PREVIEWS = YES;
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+				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
+				INFOPLIST_KEY_UILaunchScreen_Generation = YES;
+				INFOPLIST_KEY_UISupportedInterfaceOrientations_iPad = "UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight";
+				INFOPLIST_KEY_UISupportedInterfaceOrientations_iPhone = "UIInterfaceOrientationPortrait UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight";
+				LD_RUNPATH_SEARCH_PATHS = (
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+				MARKETING_VERSION = 1.0;
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+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
+			};
+			name = Debug;
+		};
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+			isa = XCBuildConfiguration;
+			buildSettings = {
+				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
+				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
+				CODE_SIGN_STYLE = Automatic;
+				CURRENT_PROJECT_VERSION = 1;
+				DEVELOPMENT_TEAM = 5RZLK3W7ZH;
+				ENABLE_PREVIEWS = YES;
+				GENERATE_INFOPLIST_FILE = YES;
+				INFOPLIST_KEY_UIApplicationSceneManifest_Generation = YES;
+				INFOPLIST_KEY_UIApplicationSupportsIndirectInputEvents = YES;
+				INFOPLIST_KEY_UILaunchScreen_Generation = YES;
+				INFOPLIST_KEY_UISupportedInterfaceOrientations_iPad = "UIInterfaceOrientationPortrait UIInterfaceOrientationPortraitUpsideDown UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight";
+				INFOPLIST_KEY_UISupportedInterfaceOrientations_iPhone = "UIInterfaceOrientationPortrait UIInterfaceOrientationLandscapeLeft UIInterfaceOrientationLandscapeRight";
+				LD_RUNPATH_SEARCH_PATHS = (
+					"$(inherited)",
+					"@executable_path/Frameworks",
+				);
+				MARKETING_VERSION = 1.0;
+				PRODUCT_BUNDLE_IDENTIFIER = "com.justinoros.HAM-Operator-Quiz-iPhone";
+				PRODUCT_NAME = "$(TARGET_NAME)";
+				SWIFT_EMIT_LOC_STRINGS = YES;
+				SWIFT_VERSION = 5.0;
+				TARGETED_DEVICE_FAMILY = "1,2";
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+			name = Release;
+		};
+/* End XCBuildConfiguration section */
+
+/* Begin XCConfigurationList section */
+		976F81852E16F953000D4A5B /* Build configuration list for PBXProject "HAM Operator Quiz iPhone" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				976F81932E16F955000D4A5B /* Debug */,
+				976F81942E16F955000D4A5B /* Release */,
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+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+		976F81952E16F955000D4A5B /* Build configuration list for PBXNativeTarget "HAM Operator Quiz iPhone" */ = {
+			isa = XCConfigurationList;
+			buildConfigurations = (
+				976F81962E16F955000D4A5B /* Debug */,
+				976F81972E16F955000D4A5B /* Release */,
+			);
+			defaultConfigurationIsVisible = 0;
+			defaultConfigurationName = Release;
+		};
+/* End XCConfigurationList section */
+	};
+	rootObject = 976F81822E16F953000D4A5B /* Project object */;
+}

HAM Operator Quiz iPhone/HAM Operator Quiz iPhone.xcodeproj/xcuserdata/justinoros.xcuserdatad/xcschemes/xcschememanagement.plist

@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>SchemeUserState</key>
+	<dict>
+		<key>HAM Operator Quiz iPhone.xcscheme_^#shared#^_</key>
+		<dict>
+			<key>orderHint</key>
+			<integer>0</integer>
+		</dict>
+	</dict>
+</dict>
+</plist>

HAM Operator Quiz iPhone/HAM Operator Quiz iPhone/Assets.xcassets/AppIcon.appiconset/Contents.json

@@ -0,0 +1,35 @@
+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "tinted"
+        }
+      ],
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

HAM Operator Quiz iPhone/HAM Operator Quiz iPhone/HAM_Operator_Quiz_iPhoneApp.swift

@@ -0,0 +1,12 @@
+import SwiftUI
+
+@main
+struct HamOperatorQuizApp: App {
+    var body: some Scene {
+        WindowGroup {
+            NavigationStack {
+                TestSelectionView()
+            }
+        }
+    }
+}

HAM Operator Quiz iPhone/HAM Operator Quiz iPhone/QuizView.swift

@@ -0,0 +1,241 @@
+import SwiftUI
+
+struct QuizQuestion: Codable, Identifiable {
+    let id: String
+    let question: String
+    let correct: Int
+    let answers: [String]
+}
+
+struct QuizView: View {
+    let testName: String
+
+    @State private var questions: [QuizQuestion] = []
+    @State private var currentIndex = 0
+    @State private var selectedAnswer: String? = nil
+    @State private var score = 0
+    @State private var feedbackText = ""
+    @State private var feedbackColor = Color.primary
+    @State private var loadError = false
+    @State private var showResults = false
+    @State private var showSummaryAlert = false
+
+    var body: some View {
+        VStack(alignment: .leading, spacing: 20) {
+            if loadError {
+                Text("Could not load questions for \(testName).")
+                    .foregroundColor(.red)
+                    .padding()
+            } else if questions.isEmpty {
+                Text("Loading questions...")
+                    .padding()
+            } else if currentIndex < questions.count {
+                Text(questions[currentIndex].question)
+                    .font(.headline)
+                    .fixedSize(horizontal: false, vertical: true)
+
+                ForEach(questions[currentIndex].answers, id: \.self) { answer in
+                    Button(action: {
+                        guard selectedAnswer == nil else { return }
+                        selectedAnswer = answer
+                        checkAnswer()
+
+                        let correctAnswer = questions[currentIndex].answers[questions[currentIndex].correct]
+                        let delay = (answer == correctAnswer) ? 3.0 : 5.0
+
+                        DispatchQueue.main.asyncAfter(deadline: .now() + delay) {
+                            if selectedAnswer != nil {
+                                nextQuestion()
+                            }
+                        }
+                    }) {
+                        Text(answer)
+                            .padding(10)
+                            .frame(maxWidth: .infinity, alignment: .leading)
+                            .background(
+                                RoundedRectangle(cornerRadius: 10)
+                                    .fill(bubbleColor(for: answer))
+                            )
+                            .foregroundColor(.white)
+                    }
+                    .buttonStyle(PlainButtonStyle())
+                    .disabled(selectedAnswer != nil)
+                }
+
+                Text(feedbackText)
+                    .foregroundColor(feedbackColor)
+
+                HStack {
+                    Button("Quit") {
+                        showSummaryAlert = true
+                    }
+                    .tint(Color.gray)
+
+                    Spacer()
+
+                    Button("Next") {
+                        nextQuestion()
+                    }
+                    .disabled(selectedAnswer == nil)
+                    .tint(Color.blue)
+                }
+                .padding(.top, 10)
+
+            } else {
+                VStack(spacing: 10) {
+                    Text("Quiz Complete!")
+                        .font(.title)
+
+                    let percentage = questions.count > 0 ? Int((Double(score) / Double(questions.count)) * 100) : 0
+                    Text("You got \(score) out of \(questions.count) correct. (\(percentage)%)")
+                }
+            }
+        }
+        .padding()
+        .onAppear(perform: syncAndLoadQuestions)
+        .navigationTitle(testName + " Test")
+            .navigationBarBackButtonHidden(true)
+        .alert(isPresented: $showSummaryAlert) {
+            let percentage = currentIndex > 0 ? Int((Double(score) / Double(currentIndex + 1)) * 100) : 0
+            return Alert(
+                title: Text("Quiz Summary"),
+                message: Text("You answered \(score) out of \(currentIndex + 1) correctly. (\(percentage)% correct)"),
+                dismissButton: .default(Text("OK"), action: {
+                    exit(0)
+                })
+            )
+        }
+    }
+
+    func bubbleColor(for answer: String) -> Color {
+        let imessageBlue = Color(red: 0.0, green: 122/255, blue: 1.0)
+        let correctAnswer = questions[currentIndex].answers[questions[currentIndex].correct]
+        if let selected = selectedAnswer {
+            if selected == answer && selected == correctAnswer {
+                return .green
+            } else if selected == answer && selected != correctAnswer {
+                return .red
+            } else if answer == correctAnswer && selected != correctAnswer {
+                return .green
+            }
+        }
+        return imessageBlue
+    }
+
+    func syncAndLoadQuestions() {
+        guard let documentsDir = getDocumentsDirectory() else {
+            loadError = true
+            return
+        }
+
+        let lowerName = testName.lowercased()
+        let filename = "\(lowerName).json"
+        let urlMap = [
+            "technician": "https://raw.githubusercontent.com/russolsen/ham_radio_question_pool/master/technician-2022-2026/technician.json",
+            "general": "https://raw.githubusercontent.com/russolsen/ham_radio_question_pool/master/general-2023-2027/general.json",
+            "extra": "https://raw.githubusercontent.com/russolsen/ham_radio_question_pool/master/extra-2024-2028/extra.json"
+        ]
+
+        guard let remoteUrlString = urlMap[lowerName],
+              let remoteUrl = URL(string: remoteUrlString) else {
+            loadError = true
+            return
+        }
+
+        let localFileURL = documentsDir.appendingPathComponent(filename)
+
+        let fileExists = FileManager.default.fileExists(atPath: localFileURL.path)
+
+        if !fileExists {
+            downloadAndSave(remoteUrl: remoteUrl, to: localFileURL)
+        } else {
+            URLSession.shared.dataTask(with: remoteUrl) { data, response, error in
+                if let data = data,
+                   let httpResponse = response as? HTTPURLResponse,
+                   httpResponse.statusCode == 200 {
+                    do {
+                        let remoteQuestions = try JSONDecoder().decode([QuizQuestion].self, from: data)
+                        if let localData = try? Data(contentsOf: localFileURL),
+                           let localQuestions = try? JSONDecoder().decode([QuizQuestion].self, from: localData),
+                           localQuestions.count == remoteQuestions.count {
+                            loadQuestions(from: localFileURL)
+                        } else {
+                            try data.write(to: localFileURL)
+                            loadQuestions(from: localFileURL)
+                        }
+                    } catch {
+                        print("Failed sync check: \(error)")
+                        loadQuestions(from: localFileURL)
+                    }
+                } else {
+                    print("Remote check failed: \(error?.localizedDescription ?? "Unknown")")
+                    loadQuestions(from: localFileURL)
+                }
+            }.resume()
+        }
+    }
+
+    func downloadAndSave(remoteUrl: URL, to localUrl: URL) {
+        URLSession.shared.dataTask(with: remoteUrl) { data, response, error in
+            if let data = data,
+               let httpResponse = response as? HTTPURLResponse,
+               httpResponse.statusCode == 200 {
+                do {
+                    try data.write(to: localUrl)
+                    loadQuestions(from: localUrl)
+                } catch {
+                    print("Failed to save downloaded JSON: \(error)")
+                    loadError = true
+                }
+            } else {
+                print("Download failed: \(error?.localizedDescription ?? "Unknown")")
+                loadError = true
+            }
+        }.resume()
+    }
+
+    func loadQuestions(from fileURL: URL) {
+        DispatchQueue.global(qos: .background).async {
+            do {
+                let data = try Data(contentsOf: fileURL)
+                let loadedQuestions = try JSONDecoder().decode([QuizQuestion].self, from: data)
+
+                DispatchQueue.main.async {
+                    if loadedQuestions.isEmpty {
+                        loadError = true
+                    } else {
+                        questions = loadedQuestions.shuffled()
+                        loadError = false
+                    }
+                }
+            } catch {
+                print("Failed to parse questions: \(error)")
+                DispatchQueue.main.async {
+                    loadError = true
+                }
+            }
+        }
+    }
+
+    func checkAnswer() {
+        let correctAnswer = questions[currentIndex].answers[questions[currentIndex].correct]
+        if selectedAnswer == correctAnswer {
+            score += 1
+            feedbackText = "Correct!"
+            feedbackColor = .green
+        } else {
+            feedbackText = "Incorrect! Correct answer: \(correctAnswer)"
+            feedbackColor = .red
+        }
+    }
+
+    func nextQuestion() {
+        currentIndex += 1
+        selectedAnswer = nil
+        feedbackText = ""
+    }
+
+    func getDocumentsDirectory() -> URL? {
+        FileManager.default.urls(for: .documentDirectory, in: .userDomainMask).first
+    }
+}

HAM Operator Quiz iPhone/HAM Operator Quiz iPhone/TestSelectionView.swift

@@ -0,0 +1,34 @@
+import SwiftUI
+
+struct TestSelectionView: View {
+    let testOptions = ["Technician Class", "General Class", "Extra Class"]
+
+    var body: some View {
+        NavigationStack {
+            VStack(spacing: 30) {
+                Spacer()  // Push content down for vertical centering
+                
+                ForEach(testOptions, id: \.self) { test in
+                    NavigationLink(value: test) {
+                        Text(test)
+                            .frame(width: 250, height: 50)
+                            .background(Color.blue.opacity(0.7))
+                            .foregroundColor(.white)
+                            .cornerRadius(8)
+                    }
+                }
+                
+                Link("Find an Exam Center", destination: URL(string: "https://www.arrl.org/find-an-amateur-radio-license-exam-session")!)
+                    .foregroundColor(.blue)
+                    .padding(.top, 20)
+
+                Spacer()  // Push content up for vertical centering
+            }
+            .navigationTitle("Select Test")
+            .navigationDestination(for: String.self) { selectedTest in
+                QuizView(testName: selectedTest.replacingOccurrences(of: " Class", with: ""))
+            }
+            .padding()
+        }
+    }
+}

HAM Operator Quiz/HAM Operator Quiz.xcodeproj/project.xcworkspace/contents.xcworkspacedata

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+   version = "1.0">
+   <FileRef
+      location = "self:">
+   </FileRef>
+</Workspace>

HAM Operator Quiz/HAM Operator Quiz/Assets.xcassets/AccentColor.colorset/Contents.json

@@ -0,0 +1,11 @@
+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

HAM Operator Quiz/HAM Operator Quiz/Assets.xcassets/Contents.json

@@ -0,0 +1,6 @@
+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

README.md

@@ -1 +1,5 @@
-Speedo -- A Speedometer application for iOS.
+Speedo: GPS Speedometer app for iPhone.
+
+HAM Operator Quiz: Amateur Radio License exam preparation for Mac.
+
+HAM Operator Quiz iPhone: Amateur Radio License exam preparation for iPhone.