using Terminal.Gui;
using NStack;
using System;
using System.Collections.Generic;
using System.Xml.Linq;
using Terminal.Gui.Graphs;
using Xunit;
using Xunit.Abstractions;
//using GraphViewTests = Terminal.Gui.Views.GraphViewTests;

// Alias Console to MockConsole so we don't accidentally use Console
using Console = Terminal.Gui.FakeConsole;

namespace Terminal.Gui.CoreTests {
	public class ThicknessTests {

		readonly ITestOutputHelper output;

		public ThicknessTests (ITestOutputHelper output)
		{
			this.output = output;
		}

		[Fact ()]
		public void Constructor_Defaults ()
		{
			var t = new Thickness ();
			Assert.Equal (0, t.Left);
			Assert.Equal (0, t.Top);
			Assert.Equal (0, t.Right);
			Assert.Equal (0, t.Bottom);
		}

		[Fact ()]
		public void Empty_Is_empty ()
		{
			var t = Thickness.Empty;
			Assert.Equal (0, t.Left);
			Assert.Equal (0, t.Top);
			Assert.Equal (0, t.Right);
			Assert.Equal (0, t.Bottom);
		}

		[Fact ()]
		public void Constructor_Width ()
		{
			var t = new Thickness (1);
			Assert.Equal (1, t.Left);
			Assert.Equal (1, t.Top);
			Assert.Equal (1, t.Right);
			Assert.Equal (1, t.Bottom);
		}


		[Fact ()]
		public void Constructor_params ()
		{
			var t = new Thickness (1, 2, 3, 4);
			Assert.Equal (1, t.Left);
			Assert.Equal (2, t.Top);
			Assert.Equal (3, t.Right);
			Assert.Equal (4, t.Bottom);

			t = new Thickness (0, 0, 0, 0);
			Assert.Equal (0, t.Left);
			Assert.Equal (0, t.Top);
			Assert.Equal (0, t.Right);
			Assert.Equal (0, t.Bottom);

			t = new Thickness (-1, 0, 0, 0);
			Assert.Equal (-1, t.Left);
			Assert.Equal (0, t.Top);
			Assert.Equal (0, t.Right);
			Assert.Equal (0, t.Bottom);
		}

		[Fact ()]
		public void Vertical_get ()
		{
			var t = new Thickness (1, 2, 3, 4);
			Assert.Equal (6, t.Vertical);

			t = new Thickness (0);
			Assert.Equal (0, t.Vertical);
		}

		[Fact ()]
		public void Horizontal_get ()
		{
			var t = new Thickness (1, 2, 3, 4);
			Assert.Equal (4, t.Horizontal);

			t = new Thickness (0);
			Assert.Equal (0, t.Horizontal);
		}

		[Fact ()]
		public void Vertical_set ()
		{
			var t = new Thickness ();
			t.Vertical = 10;
			Assert.Equal (10, t.Vertical);
			Assert.Equal (0, t.Left);
			Assert.Equal (5, t.Top);
			Assert.Equal (0, t.Right);
			Assert.Equal (5, t.Bottom);
			Assert.Equal (0, t.Horizontal);

			t.Vertical = 11;
			Assert.Equal (10, t.Vertical);
			Assert.Equal (0, t.Left);
			Assert.Equal (5, t.Top);
			Assert.Equal (0, t.Right);
			Assert.Equal (5, t.Bottom);
			Assert.Equal (0, t.Horizontal);

			t.Vertical = 1;
			Assert.Equal (0, t.Vertical);
			Assert.Equal (0, t.Left);
			Assert.Equal (0, t.Top);
			Assert.Equal (0, t.Right);
			Assert.Equal (0, t.Bottom);
			Assert.Equal (0, t.Horizontal);
		}

		[Fact ()]
		public void Horizontal_set ()
		{
			var t = new Thickness ();
			t.Horizontal = 10;
			Assert.Equal (10, t.Horizontal);
			Assert.Equal (5, t.Left);
			Assert.Equal (0, t.Top);
			Assert.Equal (5, t.Right);
			Assert.Equal (0, t.Bottom);
			Assert.Equal (0, t.Vertical);

			t.Horizontal = 11;
			Assert.Equal (10, t.Horizontal);
			Assert.Equal (5, t.Left);
			Assert.Equal (0, t.Top);
			Assert.Equal (5, t.Right);
			Assert.Equal (0, t.Bottom);
			Assert.Equal (0, t.Vertical);

			t.Horizontal = 1;
			Assert.Equal (0, t.Horizontal);
			Assert.Equal (0, t.Left);
			Assert.Equal (0, t.Top);
			Assert.Equal (0, t.Right);
			Assert.Equal (0, t.Bottom);
			Assert.Equal (0, t.Vertical);

		}


		[Fact ()]
		public void GetInsideTest ()
		{
			var t = new Thickness (1, 2, 3, 4);
			var r = new Rect (10, 20, 30, 40);
			var r2 = t.GetInside (r);
			Assert.Equal (11, r2.X);
			Assert.Equal (22, r2.Y);
			Assert.Equal (26, r2.Width);
			Assert.Equal (34, r2.Height);
		}

		[Fact (), AutoInitShutdown]
		public void DrawTests ()
		{
			((FakeDriver)Application.Driver).SetBufferSize (60, 60);
			var t = new Thickness (0, 0, 0, 0);
			var r = new Rect (5, 5, 40, 15);
			ConsoleDriver.Diagnostics |= ConsoleDriver.DiagnosticFlags.FramePadding;
			Application.Driver.FillRect (new Rect (0, 0, Application.Driver.Cols, Application.Driver.Rows), ' ');
			t.Draw (r, "Test");
			ConsoleDriver.Diagnostics = ConsoleDriver.DiagnosticFlags.Off;
			TestHelpers.AssertDriverContentsWithFrameAre (@"
       Test (Left=0,Top=0,Right=0,Bottom=0)", output);


			t = new Thickness (1, 1, 1, 1);
			r = new Rect (5, 5, 40, 15);
			ConsoleDriver.Diagnostics |= ConsoleDriver.DiagnosticFlags.FramePadding;
			Application.Driver.FillRect (new Rect (0, 0, Application.Driver.Cols, Application.Driver.Rows), ' ');
			t.Draw (r, "Test");
			ConsoleDriver.Diagnostics = ConsoleDriver.DiagnosticFlags.Off;
			TestHelpers.AssertDriverContentsWithFrameAre (@"
     TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     T                                      T
     TTTest (Left=1,Top=1,Right=1,Bottom=1)TT", output);
			
			t = new Thickness (1, 2, 3, 4);
			r = new Rect (5, 5, 40, 15);
			ConsoleDriver.Diagnostics |= ConsoleDriver.DiagnosticFlags.FramePadding;
			Application.Driver.FillRect (new Rect (0,0, Application.Driver.Cols, Application.Driver.Rows), ' ');
			t.Draw (r, "Test");
			ConsoleDriver.Diagnostics = ConsoleDriver.DiagnosticFlags.Off;
			TestHelpers.AssertDriverContentsWithFrameAre (@"
     TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
     TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
     T                                    TTT
     T                                    TTT
     T                                    TTT
     T                                    TTT
     T                                    TTT
     T                                    TTT
     T                                    TTT
     T                                    TTT
     T                                    TTT
     TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
     TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
     TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
     TTTest (Left=1,Top=2,Right=3,Bottom=4)TT", output);


			t = new Thickness (-1, 1, 1, 1);
			r = new Rect (5, 5, 40, 15);
			ConsoleDriver.Diagnostics |= ConsoleDriver.DiagnosticFlags.FramePadding;
			Application.Driver.FillRect (new Rect (0, 0, Application.Driver.Cols, Application.Driver.Rows), ' ');
			t.Draw (r, "Test");
			ConsoleDriver.Diagnostics = ConsoleDriver.DiagnosticFlags.Off;
			TestHelpers.AssertDriverContentsWithFrameAre (@"
     TTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTT
                                            T
                                            T
                                            T
                                            T
                                            T
                                            T
                                            T
                                            T
                                            T
                                            T
                                            T
                                            T
                                            T
     TTest (Left=-1,Top=1,Right=1,Bottom=1)TT", output);

		}

		[Fact ()]
		public void EqualsTest ()
		{
			var t = new Thickness (1, 2, 3, 4);
			var t2 = new Thickness (1, 2, 3, 4);
			Assert.True (t.Equals (t2));
			Assert.True (t == t2);
			Assert.False (t != t2);
		}

		[Fact ()]
		public void ToStringTest ()
		{
			var t = new Thickness (1, 2, 3, 4);
			Assert.Equal ("(Left=1,Top=2,Right=3,Bottom=4)", t.ToString ());
		}

		[Fact ()]
		public void GetHashCodeTest ()
		{
			var t = new Thickness (1, 2, 3, 4);
			Assert.Equal (t.GetHashCode (), t.GetHashCode ());
		}
	}
}