using Moq;
using NTERA.Core;
using NUnit.Framework;

namespace NTERA.Interpreter.Tests
{
    [TestFixture]
    public class KeywordTests
    {
        #region Console

        [TestCase("PRINTV")]
        public void WriteV(string keyword)
        {
            var console = new Mock<IConsole>();

            string code = $@"{keyword} 69";

            Common.Run(code, console.Object);

            console.Verify(x => x.Write("69"), Moq.Times.Once);
        }
        
        [TestCase("PRINTFORM", "%LOCALS%")]
        public void WriteS(string keyword, string operand)
        {
            var console = new Mock<IConsole>();

            string code =
                $@"LOCALS = big guy 4 u
                  {keyword} {operand}";

            Common.Run(code, console.Object);

            console.Verify(x => x.Write("big guy 4 u"), Moq.Times.Once);
        }

        [TestCase("PRINT", "{LOCALS}", "{LOCALS}")]
        [TestCase("PRINTFORMS", "\"TEXT\"", "TEXT")]
        public void WriteLiteral(string keyword, string input, string output)
        {
            var console = new Mock<IConsole>();

            string code = $"{keyword} {input}";

            Common.Run(code, console.Object);
            
            console.Verify(x => x.Write(output), Moq.Times.Once);
        }
        
        [TestCase("PRINTFORML", "{LOCALS}")]
        public void Print(string keyword, string operand)
        {
            var console = new Mock<IConsole>();

            string code =
                $@"LOCALS = big guy 4 u
                  {keyword} {operand}";

            Common.Run(code, console.Object);

            console.Verify(x => x.PrintSingleLine("big guy 4 u", false), Moq.Times.Once);
        }

        [Test]
        public void PrintImg()
        {
            var console = new Mock<IConsole>();

            Common.Run("PRINT_IMG image", console.Object);

            console.Verify(x => x.PrintImg("image"), Moq.Times.Once);
        }

        [Test]
        public void PrintButton()
        {
            var console = new Mock<IConsole>();

            Common.Run("PRINTBUTTON \"button to press\", 50", console.Object);

            console.Verify(x => x.PrintButton("button to press", 50), Moq.Times.Once);
        }
        
        public void ClearLine(string keyword, string operand)
        {
            var console = new Mock<IConsole>();

            string code =
                  @"PRINT something
                    CLEARLINE 1";

            Common.Run(code, console.Object);

            console.Verify(x => x.Write("something"), Moq.Times.Once);
            console.Verify(x => x.deleteLine(1), Moq.Times.Once);
        }

        [Test]
        public void DrawLine()
        {
            var console = new Mock<IConsole>();

            Common.Run("DRAWLINE", console.Object);

            console.Verify(x => x.PrintBar(), Moq.Times.Once);
        }

        [TestCase("-")]
        [TestCase("=")]
        [TestCase("━")]
        public void DrawLineCustom(string character)
        {
            var console = new Mock<IConsole>();

            Common.Run($"CUSTOMDRAWLINE {character}", console.Object);

            console.Verify(x => x.printCustomBar(character), Moq.Times.Once);
        }

        #endregion

        #region Arithmetic

        [Test]

        public void Times()
        {
            string code =
                @"LOCAL = 5
                  TIMES LOCAL, 1.5";

            var interpreter = Common.Run(code);

            Common.AssertLocal(interpreter, 7.5);
        }

        #endregion
    }
}