Fix: date and time values were not localized when a different locale is specified using the in-app locale switcher

Trust/Extensions/Date.swift

@@ -11,6 +11,7 @@ import Foundation
 public extension Date {
 
     private static var formatsMap: [String: DateFormatter] = [:]
+    private static var formatsMapLocale: String?
 
     public init?(string: String, format: String) {
         let date = Date.formatter(with: format).date(from: string)
@@ -21,16 +22,30 @@ public extension Date {
         return nil
     }
 
-    public func format(_ format: String) -> String {
-        return Date.formatter(with: format).string(from: self)
+    public func format(_ format: String, overrideWithTimezoneIdentifier timezoneIdentifier: String? = nil) -> String {
+        return Date.formatter(with: format, overrideWithTimezoneIdentifier: timezoneIdentifier).string(from: self)
     }
-    
-    public static func formatter(with format: String) -> DateFormatter {
-        var foundFormatter = Date.formatsMap[format]
+
+    public static func formatter(with format: String, overrideWithTimezoneIdentifier timezoneIdentifier: String? = nil) -> DateFormatter {
+        let config = Config()
+        if config.locale != formatsMapLocale {
+            formatsMapLocale = config.locale
+            formatsMap = Dictionary()
+        }
+
+        var foundFormatter = formatsMap[format]
         if foundFormatter == nil {
             foundFormatter = DateFormatter()
-            foundFormatter?.dateFormat = format
-            Date.formatsMap[format] = foundFormatter!
+            if let locale = config.locale {
+                foundFormatter?.locale = Locale(identifier: locale)
+            }
+            foundFormatter?.setLocalizedDateFormatFromTemplate(format)
+            formatsMap[format] = foundFormatter!
+        }
+        if let timezoneIdentifier = timezoneIdentifier, let timeZone = TimeZone(identifier: timezoneIdentifier) {
+            foundFormatter?.timeZone = timeZone
+        } else {
+            foundFormatter?.timeZone = .current
         }
         return foundFormatter!
     }
@@ -43,7 +58,7 @@ public extension Date {
         return Calendar.current.date(byAdding: .day, value: 1, to: Date())!
     }
 
-    public func formatAsShortDateString() -> String {
-        return format("dd MMM yyyy")
+    public func formatAsShortDateString(overrideWithTimezoneIdentifier timezoneIdentifier: String? = nil) -> String {
+        return format("dd MMM yyyy", overrideWithTimezoneIdentifier: timezoneIdentifier)
     }
 }

Trust/Foundation/XMLHandler.swift

@@ -14,18 +14,6 @@ public class XMLHandler {
 
     private let xml = try! XML.parse(AssetDefinitionXML().assetDefinitionString)
 
-    private func formatDateToMoscow(_ timestamp: Int) -> Date {
-        let formatter = DateFormatter()
-        formatter.timeZone = TimeZone(secondsFromGMT: 10800)
-        formatter.dateFormat = "dd/MM/yyyy hh:mm:ss a"
-        let unFormattedDate = Date(timeIntervalSince1970: TimeInterval(timestamp))
-        let dateString = formatter.string(from: unFormattedDate)
-        if let date = Date(string: dateString, format: "dd/MM/yyyy hh:mm:ss a") {
-            return date
-        }
-        return unFormattedDate
-    }
-
     //TODO remove once parser is properly dynamic
     public static func parseTicket(ticket: String) -> String
     {
@@ -58,6 +46,8 @@ public class XMLHandler {
         let match = Int(tokenHex.substring(with: Range(uncheckedBounds: (24, 26))), radix: 16) ?? 0
         let category = Int(tokenHex.substring(with: Range(uncheckedBounds: (26, 28))), radix: 16) ?? 0
         let number = Int(tokenHex.substring(with: Range(uncheckedBounds: (28, 32))), radix: 16) ?? 0
+        //TODO derive/extract from XML
+        let timeZoneIdentifier = Constants.eventTimeZone
 
         return Ticket(
                 id: MarketQueueHandler.bytesToHexa(tokenId.serialize().array),
@@ -66,11 +56,12 @@ public class XMLHandler {
                 name: getName(lang: lang),
                 venue: venue,
                 match: match,
-                date: formatDateToMoscow(time),
+                date: Date(timeIntervalSince1970: TimeInterval(time)),
                 seatId: number,
                 category: getCategory(category, lang: lang),
                 countryA: countryAString,
-                countryB: countryBString
+                countryB: countryBString,
+                timeZoneIdentifier: timeZoneIdentifier
         )
     }
 

Trust/Market/ViewModels/ImportTicketViewControllerViewModel.swift

@@ -98,8 +98,7 @@ struct ImportTicketViewControllerViewModel {
         if case let .validating = state {
             return ""
         } else {
-            //TODO Should format be localized?
-            return ticketHolder.date.format("hh:mm")
+            return ticketHolder.date.format("hh:mm", overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
         }
     }
 
@@ -131,8 +130,7 @@ struct ImportTicketViewControllerViewModel {
         if case let .validating = state {
             return ""
         } else {
-            //TODO Should format be localized?
-            return ticketHolder.date.format("dd MMM yyyy")
+            return ticketHolder.date.format("dd MMM yyyy", overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
         }
     }
 

Trust/Redeem/ViewModels/BaseTicketTableViewCellViewModel.swift

@@ -33,7 +33,7 @@ struct BaseTicketTableViewCellViewModel {
 
     var time: String {
         //TODO Should format be localized?
-        return ticketHolder.date.format("h:mm a")
+        return ticketHolder.date.format("h:mm a", overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 
     var teams: String {
@@ -49,7 +49,7 @@ struct BaseTicketTableViewCellViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 
     var backgroundColor: UIColor {

Trust/Redeem/ViewModels/RedeemTicketsQuantitySelectionViewModel.swift

@@ -87,6 +87,6 @@ struct RedeemTicketsQuantitySelectionViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 }

Trust/Redeem/ViewModels/TicketRedemptionViewModel.swift

@@ -62,6 +62,6 @@ struct TicketRedemptionViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 }

Trust/Sell/ViewModels/EnterSellTicketsPriceQuantityViewControllerViewModel.swift

@@ -83,7 +83,7 @@ struct EnterSellTicketsPriceQuantityViewControllerViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 
     var pricePerTicketLabelText: String {

Trust/Sell/ViewModels/GenerateSellMagicLinkViewControllerViewModel.swift

@@ -58,7 +58,6 @@ struct GenerateSellMagicLinkViewControllerViewModel {
     }
 
     var descriptionLabelText: String {
-        //TODO Should format be localized?
         return R.string.localizable.aWalletTicketTokenSellConfirmExpiryDateDescription(linkExpiryDate.format("dd MMM yyyy  hh:mm"))
     }
 

Trust/Sell/ViewModels/GenerateTransferMagicLinkViewControllerViewModel.swift

@@ -57,7 +57,6 @@ struct GenerateTransferMagicLinkViewControllerViewModel {
     }
 
     var descriptionLabelText: String {
-        //TODO Should format be localized?
         return R.string.localizable.aWalletTicketTokenSellConfirmExpiryDateDescription(linkExpiryDate.format("dd MMM yyyy  hh:mm"))
     }
 

Trust/Sell/ViewModels/SetSellTicketsExpiryDateViewControllerViewModel.swift

@@ -70,7 +70,7 @@ struct SetSellTicketsExpiryDateViewControllerViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 
     var linkExpiryDateLabelText: String {

Trust/Sell/Views/DateEntryField.swift

@@ -87,7 +87,6 @@ class DateEntryField: UIControl {
     }
 
     private func displayDateString() {
-        //TODO Should format be localized?
         let dateString = value.format("dd MMM yyyy")
         leftButton.setTitle(dateString, for: .normal)
     }

Trust/Sell/Views/TimeEntryField.swift

@@ -87,10 +87,6 @@ class TimeEntryField: UIControl {
     }
 
     private func displayTimeString() {
-        //TODO Should format be localized?
-        let formatter = DateFormatter()
-        formatter.timeStyle = .short
-        let timeString = formatter.string(from: value)
-        leftButton.setTitle(timeString, for: .normal)
+        leftButton.setTitle(value.format("hh:mm"), for: .normal)
     }
 }

Trust/Settings/Types/Constants.swift

@@ -33,6 +33,7 @@ public struct Constants {
     public static let nullTicket = "0x0000000000000000000000000000000000000000000000000000000000000000"
     public static let burnAddressString = "0x000000000000000000000000000000000000dEaD"
     public static let event = "FIFA WC2018"
+    public static let eventTimeZone = "Europe/Moscow"
 }
 
 public struct UnitConfiguration {

Trust/Tokens/Types/Ticket.swift

@@ -20,6 +20,7 @@ struct Ticket {
     let category: String
     let countryA: String
     let countryB: String
+    var timeZoneIdentifier: String?
     static var empty: Ticket {
         return Ticket(
                 id: Constants.nullTicket,
@@ -32,7 +33,8 @@ struct Ticket {
                 seatId: 0,
                 category: "N/A",
                 countryA: "N/A",
-                countryB: "N/A"
+                countryB: "N/A",
+                timeZoneIdentifier: nil
         )
     }
 }

Trust/Tokens/Types/TicketHolder.swift

@@ -22,6 +22,7 @@ class TicketHolder {
     var category: String { return tickets[0].category }
     var countryA: String { return tickets[0].countryA }
     var countryB: String { return tickets[0].countryB }
+    var timeZoneIdentifier: String? { return tickets[0].timeZoneIdentifier }
     var status: TicketHolderStatus
     var isSelected = false
     var areDetailsVisible = false

Trust/Transfer/ViewModels/ChooseTicketTransferModeViewControllerViewModel.swift

@@ -65,6 +65,6 @@ struct ChooseTicketTransferModeViewControllerViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 }

Trust/Transfer/ViewModels/SetTransferTicketsExpiryDateViewControllerViewModel.swift

@@ -61,7 +61,7 @@ struct SetTransferTicketsExpiryDateViewControllerViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 
     var descriptionLabelText: String {

Trust/Transfer/ViewModels/TransferTicketsQuantitySelectionViewModel.swift

@@ -81,6 +81,6 @@ struct TransferTicketsQuantitySelectionViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 }

Trust/Transfer/ViewModels/TransferTicketsViaWalletAddressViewControllerViewModel.swift

@@ -61,6 +61,6 @@ struct TransferTicketsViaWalletAddressViewControllerViewModel {
     }
 
     var date: String {
-        return ticketHolder.date.formatAsShortDateString()
+        return ticketHolder.date.formatAsShortDateString(overrideWithTimezoneIdentifier: ticketHolder.timeZoneIdentifier)
     }
 }

TrustTests/Tokens/Helpers/TicketAdaptorTest.swift

@@ -9,9 +9,9 @@ class TicketAdaptorTest: XCTestCase {
     func testBundlesAreBrokenIntoContinousSeatRanges() {
         let date = Date()
         let tickets = [
-            Ticket(id: "1", index: 1, city: "City", name: "Name", venue: "Venue", match: 1, date: date, seatId: 1, category: "1", countryA: "Team A", countryB: "Team B"),
-            Ticket(id: "2", index: 2, city: "City", name: "Name", venue: "Venue", match: 1, date: date, seatId: 2, category: "1", countryA: "Team A", countryB: "Team B"),
-            Ticket(id: "3", index: 3, city: "City", name: "Name", venue: "Venue", match: 1, date: date, seatId: 4, category: "1", countryA: "Team A", countryB: "Team B"),
+            Ticket(id: "1", index: 1, city: "City", name: "Name", venue: "Venue", match: 1, date: date, seatId: 1, category: "1", countryA: "Team A", countryB: "Team B", timeZoneIdentifier: nil),
+            Ticket(id: "2", index: 2, city: "City", name: "Name", venue: "Venue", match: 1, date: date, seatId: 2, category: "1", countryA: "Team A", countryB: "Team B", timeZoneIdentifier: nil),
+            Ticket(id: "3", index: 3, city: "City", name: "Name", venue: "Venue", match: 1, date: date, seatId: 4, category: "1", countryA: "Team A", countryB: "Team B", timeZoneIdentifier: nil),
         ]
         let bundles = TicketAdaptor(token: TokenObject()).bundle(tickets: tickets)
         XCTAssertEqual(bundles.count, 2)

TrustTests/Transfer/ViewControllers/TransferTicketsQuantitySelectionViewControllerTests.swift

@@ -8,7 +8,7 @@ class TransferTicketsQuantitySelectionViewControllerTests: XCTestCase  {
     func testTransferTicketQuantitySelectionViewControllerCanBeCreated() {
         let token = TokenObject()
         let type = PaymentFlow.send(type: .stormBird(token))
-        let ticket = Ticket(id: "1", index: 1, city: "", name: "", venue: "", match: 1, date: Date(), seatId: 1, category: "MATCH CLUB", countryA: "", countryB: "")
+        let ticket = Ticket(id: "1", index: 1, city: "", name: "", venue: "", match: 1, date: Date(), seatId: 1, category: "MATCH CLUB", countryA: "", countryB: "", timeZoneIdentifier: nil)
         let ticketHolder = TicketHolder(tickets: [ticket], status: .available)
         let controller = TransferTicketsQuantitySelectionViewController(paymentFlow: type)
         let viewModel = TransferTicketsQuantitySelectionViewModel(token: TokenObject(), ticketHolder: ticketHolder)