// RUN: %empty-directory(%t)
// RUN: %target-build-swift -swift-version 4 %s -o %t/a.out4 && %target-codesign %t/a.out4 && %target-run %t/a.out4
// RUN: %target-build-swift -swift-version 4.2 %s -o %t/a.out4_2 && %target-codesign %t/a.out4_2 && %target-run %t/a.out4_2
// REQUIRES: executable_test
// UNSUPPORTED: OS=macosx
// REQUIRES: objc_interop

import UIKit
import StdlibUnittest
import StdlibUnittestFoundationExtras

#if swift(>=4.2)
  let UIKitTests = TestSuite("UIKit_Swift4_2")
#else
  let UIKitTests = TestSuite("UIKit_Swift4")
#endif

#if !os(watchOS) && !os(tvOS)
private func printDevice(_ o: UIDeviceOrientation) -> String {
  return "\(o.isPortrait) \(o.isLandscape) \(o.isFlat) \(o.isValidInterfaceOrientation)"
}

private func printInterface(_ o: UIInterfaceOrientation) -> String {
  return "\(o.isPortrait) \(o.isLandscape)"
}

UIKitTests.test("UIDeviceOrientation") {
  expectEqual("false false false false", printDevice(.unknown))
  expectEqual("true false false true", printDevice(.portrait))
  expectEqual("true false false true", printDevice(.portraitUpsideDown))
  expectEqual("false true false true", printDevice(.landscapeLeft))
  expectEqual("false true false true", printDevice(.landscapeRight))
  expectEqual("false false true false", printDevice(.faceUp))
  expectEqual("false false true false", printDevice(.faceDown))
#if !swift(>=4.2)
  // Orientation functions should still be available
  _ = UIDeviceOrientationIsLandscape
  _ = UIDeviceOrientationIsPortrait
  _ = UIDeviceOrientationIsValidInterfaceOrientation
#endif
}

UIKitTests.test("UIInterfaceOrientation") {
  expectEqual("false false", printInterface(.unknown))
  expectEqual("true false", printInterface(.portrait))
  expectEqual("true false", printInterface(.portraitUpsideDown))
  expectEqual("false true", printInterface(.landscapeLeft))
  expectEqual("false true", printInterface(.landscapeRight))
#if !swift(>=4.2)
  // Orientation functions should still be available
  _ = UIInterfaceOrientationIsLandscape
  _ = UIInterfaceOrientationIsPortrait
#endif
}
#endif // !os(watchOS) && !os(tvOS)

UIKitTests.test("UIEdgeInsets") {
  let insets = [
    UIEdgeInsets(top: 1.0, left: 2.0, bottom: 3.0, right: 4.0),
    UIEdgeInsets(top: 1.0, left: 2.0, bottom: 3.1, right: 4.0),
    UIEdgeInsets.zero
  ]
  checkEquatable(insets, oracle: { $0 == $1 })
  expectFalse(UIEdgeInsetsEqualToEdgeInsets(insets[0], insets[1]))

  let encodedInsets = try! JSONEncoder().encode(insets[0])
  let decodedInsets = try! JSONDecoder().decode(UIEdgeInsets.self, from: encodedInsets)
  expectTrue(decodedInsets == insets[0])
}

UIKitTests.test("NSDirectionalEdgeInsets") {
  guard #available(iOS 11.0, tvOS 11.0, watchOS 5.0, *) else { return }
  let insets = [
    NSDirectionalEdgeInsets(top: 1.0, leading: 2.0, bottom: 3.0, trailing: 4.0),
    NSDirectionalEdgeInsets(top: 1.0, leading: 2.0, bottom: 3.1, trailing: 4.0),
    NSDirectionalEdgeInsets.zero
  ]
  checkEquatable(insets, oracle: { $0 == $1 })
  // NSDirectionalEdgeInsetsEqualToDirectionalEdgeInsets was never exposed in Swift

  let encodedInsets = try! JSONEncoder().encode(insets[0])
  let decodedInsets = try! JSONDecoder().decode(NSDirectionalEdgeInsets.self, from: encodedInsets)
  expectTrue(decodedInsets == insets[0])
}

UIKitTests.test("UIOffset") {
  let offsets = [
    UIOffset(horizontal: 1.0, vertical: 2.0),
    UIOffset(horizontal: 1.0, vertical: 3.0),
    UIOffset.zero
  ]
  checkEquatable(offsets, oracle: { $0 == $1 })
  expectFalse(UIOffsetEqualToOffset(offsets[0], offsets[1]))

  let encodedOffset = try! JSONEncoder().encode(offsets[0])
  let decodedOffset = try! JSONDecoder().decode(UIOffset.self, from: encodedOffset)
  expectTrue(decodedOffset == offsets[0])
}

#if os(iOS) || os(tvOS)
UIKitTests.test("UIFloatRange") {
  guard #available(iOS 9.0, tvOS 9.0, *) else { return }
  #if swift(>=4.2)
    let zero = UIFloatRange.zero
  #else
    let zero = UIFloatRangeZero
  #endif

  let ranges = [
    UIFloatRange(minimum: 1.0, maximum: 2.0),
    UIFloatRange(minimum: 1.0, maximum: 3.0),
    zero
  ]
  checkEquatable(ranges, oracle: { $0 == $1 })
  expectFalse(UIFloatRangeIsEqualToRange(ranges[0], ranges[1]))

  let encodedRange = try! JSONEncoder().encode(ranges[0])
  let decodedRange = try! JSONDecoder().decode(UIFloatRange.self, from: encodedRange)
  expectTrue(decodedRange == ranges[0])
}
#endif

UIKitTests.test("UIFont.Weight") {
  guard #available(iOS 8.2, *) else { return }
  #if swift(>=4) // Swift 4
    let regularFontWeight: UIFont.Weight = .regular

    expectTrue(regularFontWeight == .regular)
    expectTrue(regularFontWeight > .light)
    expectTrue(regularFontWeight < .heavy)
    expectTrue(regularFontWeight + 0.1 == 0.1 + regularFontWeight)
  #else // Swift 3
    let regularFontWeight: UIFontWeight = UIFontWeightRegular

    expectTrue(regularFontWeight == UIFontWeightRegular)
    expectTrue(regularFontWeight > UIFontWeightLight)
    expectTrue(regularFontWeight < UIFontWeightHeavy)
    expectTrue(regularFontWeight + 0.1 == 0.1 + UIFontWeightRegular)
  #endif
}

#if !os(watchOS)
UIKitTests.test("UILayoutPriority") {
  let lowLayoutPriority: UILayoutPriority = .defaultLow
  let highLayoutPriority: UILayoutPriority = .defaultHigh

  expectTrue(lowLayoutPriority < highLayoutPriority)

  expectTrue(lowLayoutPriority + 2.0 == UILayoutPriority(lowLayoutPriority.rawValue + 2.0))
  expectTrue(2.0 + lowLayoutPriority == UILayoutPriority(lowLayoutPriority.rawValue + 2.0))
  expectTrue(lowLayoutPriority - 2.0 == UILayoutPriority(lowLayoutPriority.rawValue - 2.0))
  expectTrue(highLayoutPriority - lowLayoutPriority == highLayoutPriority.rawValue - lowLayoutPriority.rawValue)

  expectTrue(lowLayoutPriority + (highLayoutPriority - lowLayoutPriority) == highLayoutPriority)

  var mutablePriority = lowLayoutPriority
  mutablePriority -= 1.0
  mutablePriority += 2.0
  expectTrue(mutablePriority == lowLayoutPriority + 1.0)

  let priorotyRange = lowLayoutPriority...highLayoutPriority
  expectTrue(priorotyRange.contains(.defaultLow))
  expectFalse(priorotyRange.contains(.required))
}
#endif

#if !os(watchOS)
UIKitTests.test("UIWindow.Level") {
  #if swift(>=4.2) // Swift 4.2
    let normalWindowLevel: UIWindow.Level = .normal
    
    expectTrue(normalWindowLevel == .normal)
    expectTrue(normalWindowLevel < .alert)
    expectTrue(normalWindowLevel + 1 == 1 + normalWindowLevel)
  #else // Swift 3 and 4
    let normalWindowLevel: UIWindowLevel = UIWindowLevelNormal
    
    expectTrue(normalWindowLevel == UIWindowLevelNormal)
    expectTrue(normalWindowLevel < UIWindowLevelAlert)
    expectTrue(normalWindowLevel + 1 == 1 + UIWindowLevelNormal)
  #endif
}
#endif

#if !os(watchOS)
class TestChildView : UIView, CustomPlaygroundQuickLookable {
  convenience init() {
    self.init(frame: CGRect(x: 0, y: 0, width: 10, height: 10))
  }
  var customPlaygroundQuickLook: PlaygroundQuickLook {
    return .text("child")
  }
}

UIKitTests.test("CustomPlaygroundQuickLookable") {
  switch PlaygroundQuickLook(reflecting: TestChildView()) {
  case .text("child"): break
  default: expectUnreachable(
    "TestChildView custom quicklookable should have been invoked")
  }
}
#endif

UIKitTests.test("NSValue bridging") {
  expectBridgeToNSValue(UIEdgeInsets(top: 17, left: 38, bottom: 6, right: 79),
                        nsValueInitializer: { NSValue(uiEdgeInsets: $0) },
                        nsValueGetter: { $0.uiEdgeInsetsValue },
                        equal: (==))
  if #available(iOS 11.0, tvOS 11.0, watchOS 5.0, *) {
    expectBridgeToNSValue(NSDirectionalEdgeInsets(top: 86, leading: 75, bottom: 30, trailing: 9),
                          nsValueInitializer: { NSValue(directionalEdgeInsets: $0) },
                          nsValueGetter: { $0.directionalEdgeInsetsValue },
                          equal: (==))
  }
  expectBridgeToNSValue(UIOffset(horizontal: 17, vertical: 38),
                        nsValueInitializer: { NSValue(uiOffset: $0) },
                        nsValueGetter: { $0.uiOffsetValue },
                        equal: (==))
}

#if os(iOS) || os(tvOS)
UIKitTests.test("UIContentSizeCategory comparison") {
    if #available(iOS 11.0, tvOS 11.0, *) {
        expectTrue(UIContentSizeCategory.large < UIContentSizeCategory.extraLarge)
        expectTrue(UIContentSizeCategory.large <= UIContentSizeCategory.extraLarge)
        expectFalse(UIContentSizeCategory.large >= UIContentSizeCategory.extraLarge)
        expectFalse(UIContentSizeCategory.large > UIContentSizeCategory.extraLarge)
        expectFalse(UIContentSizeCategory.large == UIContentSizeCategory.extraLarge)
        
        expectTrue(UIContentSizeCategory.extraLarge > UIContentSizeCategory.large)
        expectTrue(UIContentSizeCategory.extraLarge >= UIContentSizeCategory.large)
        expectFalse(UIContentSizeCategory.extraLarge < UIContentSizeCategory.large)
        expectFalse(UIContentSizeCategory.extraLarge <= UIContentSizeCategory.large)
        expectFalse(UIContentSizeCategory.extraLarge == UIContentSizeCategory.large)
        
        expectTrue(UIContentSizeCategory.large == UIContentSizeCategory.large)
        expectTrue(UIContentSizeCategory.large >= UIContentSizeCategory.large)
        expectTrue(UIContentSizeCategory.large <= UIContentSizeCategory.large)
        expectFalse(UIContentSizeCategory.large > UIContentSizeCategory.large)
        expectFalse(UIContentSizeCategory.large < UIContentSizeCategory.large)
        
        expectTrue(UIContentSizeCategory.accessibilityExtraExtraExtraLarge.isAccessibilityCategory)
        expectFalse(UIContentSizeCategory.extraSmall.isAccessibilityCategory)
    }
}
#endif

#if os(iOS) || os(watchOS) || os(tvOS)
UIKitTests.test("UIFontMetrics scaling") {
    if #available(iOS 11.0, watchOS 4.0, tvOS 11.0, *) {
        let metrics = UIFont.TextStyle.headline.metrics
        expectTrue(metrics != nil)
#if !swift(>=4.2)
        _ = UIFontTextStyle.headline.metrics
#endif
    }
}
#endif

#if os(iOS) || os(tvOS)
UIKitTests.test("UIFocusEnvironment") {
  if #available(iOS 11.0, tvOS 11.0, *) {
    let item1 = UIView()
    let item2 = UIView()
    _ = item1.contains(item2)
    _ = item1.isFocused
  }
}
#endif

#if os(iOS)

UIKitTests.test("NSItemProviderReadingWriting support") {
  if #available(iOS 11.0, *) {
    func f<T : UIDragDropSession>(session: T) {
      _ = session.canLoadObjects(ofClass: String.self)
      _ = session.canLoadObjects(ofClass: URL.self)
    }
    func g<T : UIDropSession>(session: T) {
      _ = session.loadObjects(ofClass: String.self) { _ in ()}
      _ = session.loadObjects(ofClass: URL.self) { _ in () }
    }

    let pc0 = UIPasteConfiguration(forAccepting: String.self)
    let pc1 = UIPasteConfiguration(forAccepting: URL.self)
    pc0.addTypeIdentifiers(forAccepting: URL.self)
    pc1.addTypeIdentifiers(forAccepting: String.self)

    var pb = UIPasteboard.general
    pb.setObjects(["Hello"])
    pb.setObjects([URL(string: "https://www.apple.com")!])
    pb.setObjects(["Hello"], localOnly: true, expirationDate: nil)
    pb.setObjects([URL(string: "https://www.apple.com")!], localOnly: true, expirationDate: nil)
  }
}

#endif

#if os(iOS)
UIKitTests.test("UIPrintError compatibility") {
  #if swift(>=4.2)
  _ = UIPrintError.Code.notAvailable
  _ = UIPrintError.Code.noContent
  _ = UIPrintError.Code.unknownImageFormat
  _ = UIPrintError.Code.jobFailed
  #else
  _ = UIPrintingNotAvailableError
  _ = UIPrintNoContentError
  _ = UIPrintUnknownImageFormatError
  _ = UIPrintJobFailedError
  #endif
}
#endif

#if !os(watchOS)
UIKitTests.test("UIApplicationMain") {
  #if swift(>=4.2)
  _ = { UIApplicationMain(CommandLine.argc, CommandLine.unsafeArgv, nil, nil) }
  #endif
  _ = { UIApplicationMain(CommandLine.argc, UnsafeMutableRawPointer(CommandLine.unsafeArgv).bindMemory(to: UnsafeMutablePointer<Int8>.self, capacity: Int(CommandLine.argc)), nil, nil) }
}
#endif

UIKitTests.test("UIAccessibilityTraits") {
  #if swift(>=4.2)
  let traits: UIAccessibilityTraits = [.link, .button]
  expectTrue(traits.contains(.link))
  expectFalse(traits.contains(.header))
  #else
  let _: UIAccessibilityTraits = UIAccessibilityTraitLink | UIAccessibilityTraitButton
  #endif
}

#if !os(watchOS)
UIKitTests.test("UITextDirection") {
  #if swift(>=4.2)
  let _: UITextDirection = .storage(.forward)
  let _: UITextDirection = .layout(.right)
  #else
  let _: UITextDirection = UITextStorageDirection.backward.rawValue
  #endif
}
#endif


runAllTests()