using Xunit;
using Xunit.Abstractions;

namespace Terminal.Gui.ViewTests;
public class FrameTests {
	readonly ITestOutputHelper _output;

	public FrameTests (ITestOutputHelper output)
	{
		this._output = output;
	}

	// Test FrameToScreen
	[Theory]
	[InlineData (0, 0, 0, 0)]
	[InlineData (1, 0, 1, 0)]
	[InlineData (0, 1, 0, 1)]
	[InlineData (1, 1, 1, 1)]
	[InlineData (10, 10, 10, 10)]
	void FrameToScreen_NoSuperView (int frameX, int frameY, int expectedScreenX, int expectedScreenY)
	{
		var view = new View () {
			X = frameX,
			Y = frameY,
			Width = 10,
			Height = 10
		};
		var expected = new Rect (expectedScreenX, expectedScreenY, 10, 10);
		var actual = view.FrameToScreen ();
		Assert.Equal (expected, actual);
	}

	[Theory]
	[InlineData (0, 0, 0, 0, 0)]
	[InlineData (1, 0, 0, 1, 1)]
	[InlineData (2, 0, 0, 2, 2)]
	[InlineData (1, 1, 0, 2, 1)]
	[InlineData (1, 0, 1, 1, 2)]
	[InlineData (1, 1, 1, 2, 2)]
	[InlineData (1, 10, 10, 11, 11)]
	void FrameToScreen_SuperView (int superOffset, int frameX, int frameY, int expectedScreenX, int expectedScreenY)
	{
		var super = new View() {
			X = superOffset,
			Y = superOffset,
			Width = 20,
			Height = 20
		};
		
		var view = new View () {
			X = frameX,
			Y = frameY,
			Width = 10,
			Height = 10
		};
		super.Add (view);
		var expected = new Rect (expectedScreenX, expectedScreenY, 10, 10);
		var actual = view.FrameToScreen ();
		Assert.Equal (expected, actual);
	}

	[Theory]
	[InlineData (0, 0, 0, 1, 1)]
	[InlineData (1, 0, 0, 2, 2)]
	[InlineData (2, 0, 0, 3, 3)]
	[InlineData (1, 1, 0, 3, 2)]
	[InlineData (1, 0, 1, 2, 3)]
	[InlineData (1, 1, 1, 3, 3)]
	[InlineData (1, 10, 10, 12, 12)]
	void FrameToScreen_SuperView_WithBorder (int superOffset, int frameX, int frameY, int expectedScreenX, int expectedScreenY)
	{
		var super = new View () {
			X = superOffset,
			Y = superOffset,
			Width = 20,
			Height = 20,
			BorderStyle = LineStyle.Single
		};

		var view = new View () {
			X = frameX,
			Y = frameY,
			Width = 10,
			Height = 10
		};
		super.Add (view);
		var expected = new Rect (expectedScreenX, expectedScreenY, 10, 10);
		var actual = view.FrameToScreen ();
		Assert.Equal (expected, actual);
	}

	[Theory]
	[InlineData (0, 0, 0, 2, 2)]
	[InlineData (1, 0, 0, 4, 4)]
	[InlineData (2, 0, 0, 6, 6)]
	[InlineData (1, 1, 0, 5, 4)]
	[InlineData (1, 0, 1, 4, 5)]
	[InlineData (1, 1, 1, 5, 5)]
	[InlineData (1, 10, 10, 14, 14)]
	void FrameToScreen_NestedSuperView_WithBorder (int superOffset, int frameX, int frameY, int expectedScreenX, int expectedScreenY)
	{
		var superSuper = new View () {
			X = superOffset,
			Y = superOffset,
			Width = 30,
			Height = 30,
			BorderStyle = LineStyle.Single
		};

		var super = new View () {
			X = superOffset,
			Y = superOffset,
			Width = 20,
			Height = 20,
			BorderStyle = LineStyle.Single
		};
		superSuper.Add (super);

		var view = new View () {
			X = frameX,
			Y = frameY,
			Width = 10,
			Height = 10
		};
		super.Add (view);
		var expected = new Rect (expectedScreenX, expectedScreenY, 10, 10);
		var actual = view.FrameToScreen ();
		Assert.Equal (expected, actual);
	}


	[Fact]
	public void GetFramesThickness ()
	{
		var view = new View ();
		Assert.Equal (Thickness.Empty, view.GetFramesThickness ());

		view.Margin.Thickness = new Thickness (1);
		Assert.Equal (new Thickness (1), view.GetFramesThickness ());

		view.Border.Thickness = new Thickness (1);
		Assert.Equal (new Thickness (2), view.GetFramesThickness ());

		view.Padding.Thickness = new Thickness (1);
		Assert.Equal (new Thickness (3), view.GetFramesThickness ());

		view.Padding.Thickness = new Thickness (2);
		Assert.Equal (new Thickness (4), view.GetFramesThickness ());

		view.Padding.Thickness = new Thickness (1, 2, 3, 4);
		Assert.Equal (new Thickness (3, 4, 5, 6), view.GetFramesThickness ());

		view.Margin.Thickness = new Thickness (1, 2, 3, 4);
		Assert.Equal (new Thickness (3, 5, 7, 9), view.GetFramesThickness ());
		view.Dispose ();
	}

	[Theory, AutoInitShutdown]
	[InlineData (0)]
	[InlineData (1)]
	[InlineData (2)]
	[InlineData (3)]
	public void Border_With_Title_Size_Height (int height)
	{
		var win = new Window () {
			Title = "1234",
			Width = Dim.Fill (),
			Height = Dim.Fill ()
		};

		var rs = Application.Begin (win);
		bool firstIteration = false;

		((FakeDriver)Application.Driver).SetBufferSize (20, height);
		Application.RunIteration (ref rs, ref firstIteration);
		var expected = string.Empty;

		switch (height) {
		case 0:
			//Assert.Equal (new Rect (0, 0, 17, 0), subview.Frame);
			expected = @"
";
			break;
		case 1:
			//Assert.Equal (new Rect (0, 0, 17, 0), subview.Frame);
			expected = @"
────────────────────";
			break;
		case 2:
			//Assert.Equal (new Rect (0, 0, 17, 1), subview.Frame);
			expected = @"
┌┤1234├────────────┐
└──────────────────┘
";
			break;
		case 3:
			//Assert.Equal (new Rect (0, 0, 17, 2), subview.Frame);
			expected = @"
┌┤1234├────────────┐
│                  │
└──────────────────┘
";
			break;
		}
		_ = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Application.End (rs);
	}

	[Theory, AutoInitShutdown]
	[InlineData (0)]
	[InlineData (1)]
	[InlineData (2)]
	[InlineData (3)]
	[InlineData (4)]
	[InlineData (5)]
	[InlineData (6)]
	[InlineData (7)]
	[InlineData (8)]
	[InlineData (9)]
	[InlineData (10)]
	public void Border_With_Title_Size_Width (int width)
	{
		var win = new Window () {
			Title = "1234",
			Width = Dim.Fill (),
			Height = Dim.Fill ()
		};

		var rs = Application.Begin (win);
		bool firstIteration = false;

		((FakeDriver)Application.Driver).SetBufferSize (width, 3);
		Application.RunIteration (ref rs, ref firstIteration);
		var expected = string.Empty;

		switch (width) {
		case 1:
			//Assert.Equal (new Rect (0, 0, 17, 0), subview.Frame);
			expected = @"
│
│
│";
			break;
		case 2:
			//Assert.Equal (new Rect (0, 0, 17, 1), subview.Frame);
			expected = @"
┌┐
││
└┘";
			break;
		case 3:
			//Assert.Equal (new Rect (0, 0, 17, 2), subview.Frame);
			expected = @"
┌─┐
│ │
└─┘
";
			break;
		case 4:
			//Assert.Equal (new Rect (0, 0, 17, 3), subview.Frame);
			expected = @"
┌┤├┐
│  │
└──┘";
			break;
		case 5:
			//Assert.Equal (new Rect (0, 0, 17, 3), subview.Frame);
			expected = @"
┌┤1├┐
│   │
└───┘";
			break;
		case 6:
			//Assert.Equal (new Rect (0, 0, 17, 3), subview.Frame);
			expected = @"
┌┤12├┐
│    │
└────┘";
			break;
		case 7:
			//Assert.Equal (new Rect (0, 0, 17, 3), subview.Frame);
			expected = @"
┌┤123├┐
│     │
└─────┘";
			break;
		case 8:
			//Assert.Equal (new Rect (0, 0, 17, 3), subview.Frame);
			expected = @"
┌┤1234├┐
│      │
└──────┘";
			break;
		case 9:
			//Assert.Equal (new Rect (0, 0, 17, 3), subview.Frame);
			expected = @"
┌┤1234├─┐
│       │
└───────┘";
			break;
		case 10:
			//Assert.Equal (new Rect (0, 0, 17, 3), subview.Frame);
			expected = @"
┌┤1234├──┐
│        │
└────────┘";
			break;
		}
		_ = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
	}

	[Fact, AutoInitShutdown]
	public void NoSuperView ()
	{
		var win = new Window () {
			Width = Dim.Fill (),
			Height = Dim.Fill ()
		};

		var rs = Application.Begin (win);
		bool firstIteration = false;

		((FakeDriver)Application.Driver).SetBufferSize (3, 3);
		Application.RunIteration (ref rs, ref firstIteration);
		var expected = @"
┌─┐
│ │
└─┘";

		_ = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
	}

	[Fact, AutoInitShutdown]
	public void HasSuperView ()
	{
		Application.Top.BorderStyle = LineStyle.Double;

		var frame = new FrameView () {
			Width = Dim.Fill (),
			Height = Dim.Fill ()
		};

		Application.Top.Add (frame);
		var rs = Application.Begin (Application.Top);
		bool firstIteration = false;

		((FakeDriver)Application.Driver).SetBufferSize (5, 5);
		Application.RunIteration (ref rs, ref firstIteration);
		var expected = @"
╔═══╗
║┌─┐║
║│ │║
║└─┘║
╚═══╝";

		_ = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Application.End (rs);
	}

	[Fact, AutoInitShutdown]
	public void HasSuperView_Title ()
	{
		Application.Top.BorderStyle = LineStyle.Double;

		var frame = new FrameView () {
			Title = "1234",
			Width = Dim.Fill (),
			Height = Dim.Fill ()
		};

		Application.Top.Add (frame);
		var rs = Application.Begin (Application.Top);
		bool firstIteration = false;

		((FakeDriver)Application.Driver).SetBufferSize (10, 4);
		Application.RunIteration (ref rs, ref firstIteration);
		var expected = @"
╔════════╗
║┌┤1234├┐║
║└──────┘║
╚════════╝";

		_ = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Application.End (rs);
	}

	[Theory, AutoInitShutdown]
	[InlineData (0)]
	[InlineData (1)]
	[InlineData (2)]
	[InlineData (3)]
	[InlineData (4)]
	[InlineData (5)]
	[InlineData (6)]
	[InlineData (7)]
	[InlineData (8)]
	[InlineData (9)]
	[InlineData (10)]
	public void Border_With_Title_Border_Double_Thickness_Top_Two_Size_Width (int width)
	{
		var win = new Window () {
			Title = "1234",
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			BorderStyle = LineStyle.Double,
		};
		win.Border.Thickness.Top = 2;

		var rs = Application.Begin (win);
		bool firstIteration = false;

		((FakeDriver)Application.Driver).SetBufferSize (width, 4);
		Application.RunIteration (ref rs, ref firstIteration);
		var expected = string.Empty;

		switch (width) {
		case 1:
			Assert.Equal (new Rect (0, 0, 1, 4), win.Frame);
			expected = @"
║
║
║";
			break;
		case 2:
			Assert.Equal (new Rect (0, 0, 2, 4), win.Frame);
			expected = @"
╔╗
║║
╚╝";
			break;
		case 3:
			Assert.Equal (new Rect (0, 0, 3, 4), win.Frame);
			expected = @"
╔═╗
║ ║
╚═╝";
			break;
		case 4:
			Assert.Equal (new Rect (0, 0, 4, 4), win.Frame);
			expected = @"
 ╒╕ 
╔╛╘╗
║  ║
╚══╝";
			break;
		case 5:
			Assert.Equal (new Rect (0, 0, 5, 4), win.Frame);
			expected = @"
 ╒═╕ 
╔╛1╘╗
║   ║
╚═══╝";
			break;
		case 6:
			Assert.Equal (new Rect (0, 0, 6, 4), win.Frame);
			expected = @"
 ╒══╕ 
╔╛12╘╗
║    ║
╚════╝";
			break;
		case 7:
			Assert.Equal (new Rect (0, 0, 7, 4), win.Frame);
			expected = @"
 ╒═══╕ 
╔╛123╘╗
║     ║
╚═════╝";
			break;
		case 8:
			Assert.Equal (new Rect (0, 0, 8, 4), win.Frame);
			expected = @"
 ╒════╕ 
╔╛1234╘╗
║      ║
╚══════╝";
			break;
		case 9:
			Assert.Equal (new Rect (0, 0, 9, 4), win.Frame);
			expected = @"
 ╒════╕  
╔╛1234╘═╗
║       ║
╚═══════╝";
			break;
		case 10:
			Assert.Equal (new Rect (0, 0, 10, 4), win.Frame);
			expected = @"
 ╒════╕   
╔╛1234╘══╗
║        ║
╚════════╝";
			break;
		}
		_ = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Application.End (rs);
	}

	[Theory, AutoInitShutdown]
	[InlineData (0)]
	[InlineData (1)]
	[InlineData (2)]
	[InlineData (3)]
	[InlineData (4)]
	[InlineData (5)]
	[InlineData (6)]
	[InlineData (7)]
	[InlineData (8)]
	[InlineData (9)]
	[InlineData (10)]
	public void Border_With_Title_Border_Double_Thickness_Top_Three_Size_Width (int width)
	{
		var win = new Window () {
			Title = "1234",
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			BorderStyle = LineStyle.Double,
		};
		win.Border.Thickness.Top = 3;

		var rs = Application.Begin (win);
		bool firstIteration = false;

		((FakeDriver)Application.Driver).SetBufferSize (width, 4);
		Application.RunIteration (ref rs, ref firstIteration);
		var expected = string.Empty;

		switch (width) {
		case 1:
			Assert.Equal (new Rect (0, 0, 1, 4), win.Frame);
			expected = @"
║
║
║";
			break;
		case 2:
			Assert.Equal (new Rect (0, 0, 2, 4), win.Frame);
			expected = @"
╔╗
║║
╚╝";
			break;
		case 3:
			Assert.Equal (new Rect (0, 0, 3, 4), win.Frame);
			expected = @"
╔═╗
║ ║
╚═╝";
			break;
		case 4:
			Assert.Equal (new Rect (0, 0, 4, 4), win.Frame);
			expected = @"
 ╒╕ 
╔╡╞╗
║╘╛║
╚══╝";
			break;
		case 5:
			Assert.Equal (new Rect (0, 0, 5, 4), win.Frame);
			expected = @"
 ╒═╕ 
╔╡1╞╗
║╘═╛║
╚═══╝";
			break;
		case 6:
			Assert.Equal (new Rect (0, 0, 6, 4), win.Frame);
			expected = @"
 ╒══╕ 
╔╡12╞╗
║╘══╛║
╚════╝";
			break;
		case 7:
			Assert.Equal (new Rect (0, 0, 7, 4), win.Frame);
			expected = @"
 ╒═══╕ 
╔╡123╞╗
║╘═══╛║
╚═════╝";
			break;
		case 8:
			Assert.Equal (new Rect (0, 0, 8, 4), win.Frame);
			expected = @"
 ╒════╕ 
╔╡1234╞╗
║╘════╛║
╚══════╝";
			break;
		case 9:
			Assert.Equal (new Rect (0, 0, 9, 4), win.Frame);
			expected = @"
 ╒════╕  
╔╡1234╞═╗
║╘════╛ ║
╚═══════╝";
			break;
		case 10:
			Assert.Equal (new Rect (0, 0, 10, 4), win.Frame);
			expected = @"
 ╒════╕   
╔╡1234╞══╗
║╘════╛  ║
╚════════╝";
			break;
		}
		_ = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Application.End (rs);
	}

	[Theory, AutoInitShutdown]
	[InlineData (0)]
	[InlineData (1)]
	[InlineData (2)]
	[InlineData (3)]
	[InlineData (4)]
	[InlineData (5)]
	[InlineData (6)]
	[InlineData (7)]
	[InlineData (8)]
	[InlineData (9)]
	[InlineData (10)]
	public void Border_With_Title_Border_Double_Thickness_Top_Four_Size_Width (int width)
	{
		var win = new Window () {
			Title = "1234",
			Width = Dim.Fill (),
			Height = Dim.Fill (),
			BorderStyle = LineStyle.Double,
		};
		win.Border.Thickness.Top = 4;

		var rs = Application.Begin (win);
		bool firstIteration = false;

		((FakeDriver)Application.Driver).SetBufferSize (width, 5);
		Application.RunIteration (ref rs, ref firstIteration);
		var expected = string.Empty;

		switch (width) {
		case 1:
			Assert.Equal (new Rect (0, 0, 1, 5), win.Frame);
			expected = @"
║
║
║";
			break;
		case 2:
			Assert.Equal (new Rect (0, 0, 2, 5), win.Frame);
			expected = @"
╔╗
║║
╚╝";
			break;
		case 3:
			Assert.Equal (new Rect (0, 0, 3, 5), win.Frame);
			expected = @"
╔═╗
║ ║
╚═╝";
			break;
		case 4:
			Assert.Equal (new Rect (0, 0, 4, 5), win.Frame);
			expected = @"
 ╒╕ 
╔╡╞╗
║╘╛║
╚══╝";
			break;
		case 5:
			Assert.Equal (new Rect (0, 0, 5, 5), win.Frame);
			expected = @"
 ╒═╕ 
╔╡1╞╗
║╘═╛║
╚═══╝";
			break;
		case 6:
			Assert.Equal (new Rect (0, 0, 6, 5), win.Frame);
			expected = @"
 ╒══╕ 
╔╡12╞╗
║╘══╛║
╚════╝";
			break;
		case 7:
			Assert.Equal (new Rect (0, 0, 7, 5), win.Frame);
			expected = @"
 ╒═══╕ 
╔╡123╞╗
║╘═══╛║
╚═════╝";
			break;
		case 8:
			Assert.Equal (new Rect (0, 0, 8, 5), win.Frame);
			expected = @"
 ╒════╕ 
╔╡1234╞╗
║╘════╛║
╚══════╝";
			break;
		case 9:
			Assert.Equal (new Rect (0, 0, 9, 5), win.Frame);
			expected = @"
 ╒════╕  
╔╡1234╞═╗
║╘════╛ ║
╚═══════╝";
			break;
		case 10:
			Assert.Equal (new Rect (0, 0, 10, 5), win.Frame);
			expected = @"
 ╒════╕   
╔╡1234╞══╗
║╘════╛  ║
╚════════╝";
			break;
		}
		_ = TestHelpers.AssertDriverContentsWithFrameAre (expected, _output);
		Application.End (rs);
	}
}