using Shouldly;
using Xunit;
using ZB.MOM.WW.OtOpcUa.Driver.Ab.Transport.Cip;
namespace ZB.MOM.WW.OtOpcUa.Driver.Ab.Transport.Tests.Cip;

public sealed class CipPathTests
{
    [Theory]
    [InlineData("1,0", "0100")]
    [InlineData("", "")]
    [InlineData("1,0,2,10.0.0.5", "0100" + "1208" + "31302E302E302E35")]
    [InlineData("2,10.0.0.55", "1209" + "31302E302E302E3535" + "00")]
    [InlineData("15,3", "0F0F0003")]
    [InlineData("16,10.0.0.5", "1F08" + "1000" + "31302E302E302E35")]
    public void Encodes_route(string path, string hex) =>
        Convert.ToHexString(CipPath.EncodeRoute(path)).ShouldBe(hex);

    [Fact]
    public void Odd_route_parts_throw() =>
        Should.Throw<ArgumentException>(() => CipPath.EncodeRoute("1,0,2"));

    [Theory]
    [InlineData("TestDINT", "9108546573744449 4E54")]
    [InlineData("Abc", "910341626300")]
    [InlineData("Program:Main.Arr[3].Val", "910C50726F6772616D3A4D61696E" + "910341727200" + "2803" + "910356616C00")]
    [InlineData("Big[300]", "910342696700" + "29002C01")]
    [InlineData("Huge[70000]", "910448756765" + "2A00" + "70110100")]
    [InlineData("Grid[1,2]", "910447726964" + "2801" + "2802")]
    public void Encodes_symbolic(string name, string hex) =>
        Convert.ToHexString(CipPath.EncodeSymbolic(name)).ShouldBe(hex.Replace(" ", ""));

    [Fact]
    public void Symbolic_rejects_bit_selector() =>
        Should.Throw<ArgumentException>(() => CipPath.EncodeSymbolic("Tag.5"));

    [Fact]
    public void Splits_bit_selector()
    {
        CipPath.SplitBitSelector("Tag.5").ShouldBe(("Tag", 5));
        CipPath.SplitBitSelector("Tag.Member").ShouldBe(("Tag.Member", null));
        CipPath.SplitBitSelector("Tag").ShouldBe(("Tag", null));
    }

    [Theory]
    [InlineData(2, 1u, "20022401")]
    [InlineData(0x6B, 0x1234u, "206B25003412")]
    [InlineData(0x300, 1u, "21000003" + "2401")]
    [InlineData(2, 70000u, "2002" + "2600" + "70110100")]
    public void Encodes_class_instance(ushort cls, uint inst, string hex) =>
        Convert.ToHexString(CipPath.EncodeClassInstance(cls, inst)).ShouldBe(hex);

    [Fact]
    public void Prefixes_path_size_in_words() =>
        Convert.ToHexString(CipPath.WithPathSize([0x20, 0x02, 0x24, 0x01])).ShouldBe("0220022401");
}