Add flags currency

Gem.xcodeproj/project.pbxproj

@@ -10,6 +10,7 @@
 		481152C22B54F46800377C75 /* Gemstone in Frameworks */ = {isa = PBXBuildFile; productRef = 481152C12B54F46800377C75 /* Gemstone */; };
 		481152C82B566AC200377C75 /* Gemstone in Frameworks */ = {isa = PBXBuildFile; productRef = 481152C72B566AC200377C75 /* Gemstone */; };
 		487A27EB2B633FED00BEEADB /* GemstoneSwift in Frameworks */ = {isa = PBXBuildFile; productRef = 487A27EA2B633FED00BEEADB /* GemstoneSwift */; };
+		8325539A2C0FB11C00C9CA0C /* CurrencySceneViewModelTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = 832553992C0FB11C00C9CA0C /* CurrencySceneViewModelTests.swift */; };
 		832553982C0F27F000C9CA0C /* ChartScene.swift in Sources */ = {isa = PBXBuildFile; fileRef = 832553972C0F27F000C9CA0C /* ChartScene.swift */; };
 		C30952B4299C39D70004C0F9 /* App.swift in Sources */ = {isa = PBXBuildFile; fileRef = C30952B3299C39D70004C0F9 /* App.swift */; };
 		C30952B8299C39D80004C0F9 /* Images.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = C30952B7299C39D80004C0F9 /* Images.xcassets */; };
@@ -250,6 +251,7 @@
 
 /* Begin PBXFileReference section */
 		487A27E82B632CCE00BEEADB /* Gemstone */ = {isa = PBXFileReference; lastKnownFileType = wrapper; path = Gemstone; sourceTree = "<group>"; };
+		832553992C0FB11C00C9CA0C /* CurrencySceneViewModelTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CurrencySceneViewModelTests.swift; sourceTree = "<group>"; };
 		832553972C0F27F000C9CA0C /* ChartScene.swift */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.swift; path = ChartScene.swift; sourceTree = "<group>"; };
 		C30952B0299C39D70004C0F9 /* Gem.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = Gem.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		C30952B3299C39D70004C0F9 /* App.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = App.swift; sourceTree = "<group>"; };
@@ -531,6 +533,22 @@
 /* End PBXFrameworksBuildPhase section */
 
 /* Begin PBXGroup section */
+		8325539B2C0FB22000C9CA0C /* Settings */ = {
+			isa = PBXGroup;
+			children = (
+				8325539C2C0FB23500C9CA0C /* ViewModels */,
+			);
+			path = Settings;
+			sourceTree = "<group>";
+		};
+		8325539C2C0FB23500C9CA0C /* ViewModels */ = {
+			isa = PBXGroup;
+			children = (
+				832553992C0FB11C00C9CA0C /* CurrencySceneViewModelTests.swift */,
+			);
+			path = ViewModels;
+			sourceTree = "<group>";
+		};
 		832553962C0F27D300C9CA0C /* Scenes */ = {
 			isa = PBXGroup;
 			children = (
@@ -594,6 +612,7 @@
 		C30952C4299C39D80004C0F9 /* GemTests */ = {
 			isa = PBXGroup;
 			children = (
+				8325539B2C0FB22000C9CA0C /* Settings */,
 				D8A1F8832B17F8E900B15F54 /* Core */,
 				C3549B3229C4395B00B4BE01 /* Assets */,
 				C3549B2E29C42E6C00B4BE01 /* Wallet */,
@@ -1855,6 +1874,7 @@
 				C30952C6299C39D80004C0F9 /* walletTests.swift in Sources */,
 				C3A7CB9929D35EC200431341 /* WalletSceneViewModelTests.swift in Sources */,
 				C3A7CB9729D3569C00431341 /* PriceViewModelTests.swift in Sources */,
+				8325539A2C0FB11C00C9CA0C /* CurrencySceneViewModelTests.swift in Sources */,
 				C3549B3529C4396A00B4BE01 /* AssetViewModelTests.swift in Sources */,
 				C3549B3129C42E8F00B4BE01 /* AssetListViewModelTests.swift in Sources */,
 			);

Gem/Settings/Scenes/CurrencyScene.swift

@@ -36,8 +36,6 @@ struct CurrencyScene: View {
     }
 }
 
-//struct CurrencyScene_Previews: PreviewProvider {
-//    static var previews: some View {
-//        CurrencyScene()
-//    }
-//}
+#Preview {
+    CurrencyScene(model: .init())
+}

Gem/Settings/Scenes/SettingsScene.swift

@@ -41,7 +41,7 @@ struct SettingsScene: View {
                     ListItemView(title: Localized.Settings.Notifications.title, image: Image(.settingsNotifications))
                 }
                 NavigationLink(value: Scenes.Currency()) {
-                    ListItemView(title: Localized.Settings.currency, subtitle: model.currencyModel.currency, image: Image(.settingsCurrency))
+                    ListItemView(title: Localized.Settings.currency, subtitle: model.currencyValue, image: Image(.settingsCurrency))
                 }
                 NavigationLink(value: Scenes.Chains()) {
                     ListItemView(title: Localized.Settings.Networks.title, image: Image(.settingsNetworks))

Gem/Settings/ViewModels/CurrencySceneViewModel.swift

@@ -6,26 +6,30 @@ import Components
 import Store
 
 class CurrencySceneViewModel: ObservableObject {
-    
+
     let preferences: Preferences
-    
+
     @Published var currency: String {
         didSet {
             preferences.currency = currency
         }
     }
-    
+
     init(
         preferences: Preferences = .standard
     ) {
         self.currency = preferences.currency
         self.preferences = preferences
     }
-    
+
     var title: String {
         return Localized.Settings.currency
     }
-
+
+    var emojiFlag: String? {
+        Locale.Currency.flag(for: currency)
+    }
+
     var defaultCurrencies: [String] {
         return [
             Currency.usd.rawValue,
@@ -38,14 +42,14 @@ class CurrencySceneViewModel: ObservableObject {
             currency,
         ]
     }
-    
+
     var recommendedCurrencies: [Locale.Currency] {
         let values = defaultCurrencies.map {
             Locale.Currency($0)
         }
         return ([Locale.current.currency] + values).compactMap { $0 }.unique()
     }
-    
+
     var list: [ListItemValueSection<String>] {
         return [
             ListItemValueSection(
@@ -66,6 +70,71 @@ class CurrencySceneViewModel: ObservableObject {
 
 extension Locale.Currency {
     var title: String {
-        return String(format: "%@ - %@", identifier, Locale.current.localizedString(forCurrencyCode: identifier) ?? .empty)
+        let localizedCurrencyId = Locale.current.localizedString(forCurrencyCode: identifier) ?? .empty
+        let currencyIdenifier = identifier
+
+        if let emojiFlag = emojiFlag {
+            return "\(emojiFlag) \(currencyIdenifier) - \(localizedCurrencyId)"
+        } else {
+            return "\(currencyIdenifier) - \(localizedCurrencyId)"
+        }
+    }
+
+    private var emojiFlag: String? {
+        return Self.flag(for: identifier)
+    }
+
+    fileprivate static func flag(for identifier: String) -> String? {
+        return Self.emojiFlags[identifier]
     }
+
+    fileprivate static let emojiFlags: [String: String] = [
+        "MXN": "🇲🇽",
+        "CHF": "🇨🇭",
+        "CNY": "🇨🇳",
+        "THB": "🇹🇭",
+        "HUF": "🇭🇺",
+        "AUD": "🇦🇺",
+        "IDR": "🇮🇩",
+        "RUB": "🇷🇺",
+        "ZAR": "🇿🇦",
+        "EUR": "🇪🇺",
+        "NZD": "🇳🇿",
+        "SAR": "🇸🇦",
+        "SGD": "🇸🇬",
+        "BMD": "🇧🇲",
+        "KWD": "🇰🇼",
+        "HKD": "🇭🇰",
+        "JPY": "🇯🇵",
+        "GBP": "🇬🇧",
+        "DKK": "🇩🇰",
+        "KRW": "🇰🇷",
+        "PHP": "🇵🇭",
+        "CLP": "🇨🇱",
+        "TWD": "🇹🇼",
+        "PKR": "🇵🇰",
+        "BRL": "🇧🇷",
+        "CAD": "🇨🇦",
+        "BHD": "🇧🇭",
+        "MMK": "🇲🇲",
+        "VEF": "🇻🇪",
+        "VND": "🇻🇳",
+        "CZK": "🇨🇿",
+        "TRY": "🇹🇷",
+        "INR": "🇮🇳",
+        "ARS": "🇦🇷",
+        "BDT": "🇧🇩",
+        "NOK": "🇳🇴",
+        "USD": "🇺🇸",
+        "LKR": "🇱🇰",
+        "ILS": "🇮🇱",
+        "PLN": "🇵🇱",
+        "NGN": "🇳🇬",
+        "UAH": "🇺🇦",
+        "XDR": "🏳️",
+        "MYR": "🇲🇾",
+        "AED": "🇦🇪",
+        "SEK": "🇸🇪",
+        "BTC": "₿"
+    ]
 }

Gem/Settings/ViewModels/SettingsViewModel.swift

@@ -41,7 +41,16 @@ class SettingsViewModel: ObservableObject {
     var walletsText: String {
         "\(keystore.wallets.count)"
     }
-
+
+    var currencyValue: String {
+        let currentCurrency = currencyModel.currency
+
+        if let currentFlag = currencyModel.emojiFlag {
+            return "\(currentFlag) \(currentCurrency)"
+        }
+        return currentCurrency
+    }
+
     var versionText: String {
         return String(format: "%@ (%d)", Bundle.main.releaseVersionNumber, Bundle.main.buildVersionNumber)
     }

GemTests/Settings/ViewModels/CurrencySceneViewModelTests.swift

@@ -0,0 +1,56 @@
+import XCTest
+import Primitives
+@testable import Gem
+
+final class CurrencySceneViewModelTests: XCTestCase {
+    func testCurrencyText() {
+        let usdCurrency = CurrencySceneViewModelTests.nativeCurrency(currency: .usd)
+
+        let usdCurrencyTitle = usdCurrency?.title
+        let mockUsdCurrencyTitle = "🇺🇸 USD - US Dollar"
+        XCTAssertEqual(usdCurrencyTitle, mockUsdCurrencyTitle)
+
+        let uahCurrency = CurrencySceneViewModelTests.nativeCurrency(identifier: "UAH")
+        let uahCurrencyTitle = uahCurrency?.title
+
+        let mockUAHCurrencyTitle = "🇺🇦 UAH - Ukrainian Hryvnia"
+        XCTAssertEqual(uahCurrencyTitle, mockUAHCurrencyTitle)
+    }
+
+    func testCurrencyTextWithXDREmojiFlag() {
+        let xdrCurrency = CurrencySceneViewModelTests.nativeCurrency(identifier: "XDR")
+        let xdrCurrencyTitle = xdrCurrency?.title
+
+        let mockXdrCurrencyTitle = "🏳️ XDR - Special Drawing Rights"
+        XCTAssertEqual(xdrCurrencyTitle, mockXdrCurrencyTitle)
+    }
+
+    func testUnknownCurrency() {
+        let unknownCurrency = CurrencySceneViewModelTests.nativeCurrency(identifier: "XYZ")
+        let unknownCurrencyTitle = unknownCurrency?.title
+
+        // unknown currency not supported, it's managed by Currency raw vlaue from primitives
+        XCTAssertEqual(unknownCurrencyTitle, nil)
+    }
+
+    func testBitcoinCurrency() {
+        let btcCurrency = CurrencySceneViewModelTests.nativeCurrency(identifier: "BTC")
+        let btcCurrencyTitle = btcCurrency?.title
+
+        /* not supported yet
+         let mockBtcCurrencyTitle = "₿ BTC - Bitcoin"
+         XCTAssertEqual(btcCurrencyTitle, mockBtcCurrencyTitle)
+         */
+        XCTAssertEqual(btcCurrencyTitle, nil)
+    }
+}
+
+extension CurrencySceneViewModelTests {
+    static func nativeCurrency(identifier: String.ID) -> Locale.Currency? {
+        Currency.nativeCurrencies.first(where: { $0.identifier == identifier })
+    }
+
+    static func nativeCurrency(currency: Currency) -> Locale.Currency? {
+        Currency.nativeCurrencies.first(where: { $0.identifier == currency.rawValue })
+    }
+}