using MoonWorks.Graphics;

namespace MoonWorks.Test
{
	public static class TestUtils
	{
		public static Backend DefaultBackend = Backend.D3D11; // change this to test different backends

		public static WindowCreateInfo GetStandardWindowCreateInfo()
		{
			return new WindowCreateInfo(
				"Main Window",
				640,
				480,
				ScreenMode.Windowed,
				PresentMode.FIFO
			);
		}

		public static FrameLimiterSettings GetStandardFrameLimiterSettings()
		{
			return new FrameLimiterSettings(
				FrameLimiterMode.Capped,
				60
			);
		}

		public static GraphicsPipelineCreateInfo GetStandardGraphicsPipelineCreateInfo(
			TextureFormat swapchainFormat,
			ShaderModule vertShaderModule,
			ShaderModule fragShaderModule
		) {
			return new GraphicsPipelineCreateInfo
			{
				AttachmentInfo = new GraphicsPipelineAttachmentInfo(
					new ColorAttachmentDescription(
						swapchainFormat,
						ColorAttachmentBlendState.Opaque
					)
				),
				DepthStencilState = DepthStencilState.Disable,
				MultisampleState = MultisampleState.None,
				PrimitiveType = PrimitiveType.TriangleList,
				RasterizerState = RasterizerState.CCW_CullNone,
				VertexInputState = VertexInputState.Empty,
				VertexShaderInfo = GraphicsShaderInfo.Create(vertShaderModule, "main", 0),
				FragmentShaderInfo = GraphicsShaderInfo.Create(fragShaderModule, "main", 0)
			};
		}

		public static string GetShaderPath(string shaderName)
		{
			return SDL2.SDL.SDL_GetBasePath() + "Content/Shaders/Compiled/" + shaderName + ".refresh";
		}

		public static string GetTexturePath(string textureName)
		{
			return SDL2.SDL.SDL_GetBasePath() + "Content/Textures/" + textureName;
		}

		public static string GetVideoPath(string videoName)
		{
			return SDL2.SDL.SDL_GetBasePath() + "Content/Videos/" + videoName;
		}

		public enum ButtonType
		{
			Left,	// A/left arrow on keyboard, left face button on gamepad
			Bottom,	// S/down arrow on keyboard, bottom face button on gamepad
			Right	// D/right arrow on keyboard, right face button on gamepad
		}

		public static bool CheckButtonPressed(Input.Inputs inputs, ButtonType buttonType)
		{
			bool pressed = false;

			if (buttonType == ButtonType.Left)
			{
				pressed = (
					(inputs.GamepadExists(0) && inputs.GetGamepad(0).DpadLeft.IsPressed) ||
					inputs.Keyboard.IsPressed(Input.KeyCode.A) ||
					inputs.Keyboard.IsPressed(Input.KeyCode.Left)
				);
			}
			else if (buttonType == ButtonType.Bottom)
			{
				pressed = (
					(inputs.GamepadExists(0) && inputs.GetGamepad(0).DpadDown.IsPressed) ||
					inputs.Keyboard.IsPressed(Input.KeyCode.S) ||
					inputs.Keyboard.IsPressed(Input.KeyCode.Down)
				);
			}
			else if (buttonType == ButtonType.Right)
			{
				pressed = (
					(inputs.GamepadExists(0) && inputs.GetGamepad(0).DpadRight.IsPressed) ||
					inputs.Keyboard.IsPressed(Input.KeyCode.D) ||
					inputs.Keyboard.IsPressed(Input.KeyCode.Right)
				);
			}

			return pressed;
		}

		public static bool CheckButtonDown(Input.Inputs inputs, ButtonType buttonType)
		{
			bool down = false;

			if (buttonType == ButtonType.Left)
			{
				down = (
					(inputs.GamepadExists(0) && inputs.GetGamepad(0).DpadLeft.IsDown) ||
					inputs.Keyboard.IsDown(Input.KeyCode.A) ||
					inputs.Keyboard.IsDown(Input.KeyCode.Left)
				);
			}
			else if (buttonType == ButtonType.Bottom)
			{
				down = (
					(inputs.GamepadExists(0) && inputs.GetGamepad(0).DpadDown.IsDown) ||
					inputs.Keyboard.IsDown(Input.KeyCode.S) ||
					inputs.Keyboard.IsDown(Input.KeyCode.Down)
				);
			}
			else if (buttonType == ButtonType.Right)
			{
				down = (
					(inputs.GamepadExists(0) && inputs.GetGamepad(0).DpadRight.IsDown) ||
					inputs.Keyboard.IsDown(Input.KeyCode.D) ||
					inputs.Keyboard.IsDown(Input.KeyCode.Right)
				);
			}

			return down;
		}
	}
}