--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/GeoQuiz/Logic/GuessTheCapital.swift	Tue Sep 20 08:13:26 2022 +0200
@@ -0,0 +1,115 @@
+//
+//  GuessTheCapital.swift
+//  GeoQuiz
+//
+//  Created by Dennis Concepción Martín on 18/9/22.
+//
+
+import Foundation
+
+class GuessTheCapital: Game, ObservableObject {
+    
+    struct Country: Hashable {
+        let capitalName: String
+        let flagSymbol: String
+    }
+    
+    let countries: [String: Country]
+    var countriesAsked = [String: Country]()
+    
+    @Published var userScore = 0
+    @Published var userLives = 3
+    @Published var questionCounter = 0
+    @Published var alertTitle = ""
+    @Published var alertMessage = ""
+    @Published var showingBuyLivesView = false
+    @Published var showingNoLivesAlert = false
+    @Published var showingWrongAnswerAlert = false
+    @Published var showingEndGameAlert = false
+    
+    @Published var userChoices = [String: Country]()
+    @Published var countryNameAsked = ""
+    
+    init() {
+        let flags: CountryFlags = load("CountryFlags.json")
+        let capitals: CountryCapitals = load("CountryCapitals.json")
+        
+        var countries = [String: Country]()
+        
+        for country in capitals.countries {
+            let countryName = country.key
+            let capitalName = country.value
+            
+            if let flagSymbol = flags.countries[countryName] {
+                countries[country.key] = Country(capitalName: capitalName, flagSymbol: flagSymbol)
+            } else {
+                fatalError()
+            }
+        }
+        
+        self.countries = countries
+        askQuestion()
+    }
+    
+    func askQuestion() {
+        guard questionCounter < countries.count else {
+            self.alertTitle = "Amazing!"
+            self.alertMessage = "You've completed the game."
+            self.showingEndGameAlert = true
+            
+            return
+        }
+        
+        var userChoices = [String: Country]()
+        
+        while userChoices.count < 2 {
+            if let country = countries.randomElement() {
+                userChoices[country.key] = country.value
+            } else {
+                fatalError("Couldn't get a random country")
+            }
+        }
+        
+        let countryAsked = countries.first(where: {
+            !userChoices.keys.contains($0.key) &&
+            !countriesAsked.keys.contains($0.key)
+        })
+        
+        if let countryAsked = countryAsked {
+            userChoices[countryAsked.key] = countryAsked.value
+            self.countriesAsked[countryAsked.key] = countryAsked.value
+            self.countryNameAsked = countryAsked.key
+        } else {
+            fatalError("Couldn't get countryAsked")
+        }
+        
+        self.userChoices = userChoices
+        self.questionCounter += 1
+    }
+    
+    func answered(userChoice userCapitalNameGuess: String) {
+        guard let correctCountry = countries[countryNameAsked] else {
+            fatalError("Couln't find \(countryNameAsked) in countries dictionary")
+        }
+        
+        guard userLives > 0 else {
+            self.alertTitle = "Not enough lives!"
+            self.alertMessage = "Please buy more lives to keep playing"
+            self.showingNoLivesAlert = true
+
+            return
+        }
+        
+        if correctCountry.capitalName == userCapitalNameGuess {
+            hapticSuccess()
+            self.userScore += 1
+            askQuestion()
+        } else {
+            hapticError()
+            self.userLives -= 1
+            self.alertTitle = "Wrong!"
+            self.alertMessage = "The capital of \(countryNameAsked) is \(correctCountry.capitalName). You have \(userLives) lives left"
+            self.showingWrongAnswerAlert = true
+        }
+    }
+}