using System.Linq;
using Xunit;

namespace Wabbajack.Paths.Test
{
    public class RelativePathTests
    {
        [Fact]
        public void CanReplaceExtensions()
        {
            Assert.Equal(new Extension(".dds"), ((RelativePath)@"foo\bar.dds").Extension);
            Assert.Equal((RelativePath)@"foo\bar.zip",
                ((RelativePath)@"foo\bar.dds").ReplaceExtension(new Extension(".zip")));
            Assert.NotEqual((RelativePath)@"foo\bar\z.zip",
                ((RelativePath)@"foo\bar.dds").ReplaceExtension(new Extension(".zip")));
            Assert.Equal((RelativePath)@"foo\bar.zip",
                ((RelativePath)@"foo\bar").ReplaceExtension(new Extension(".zip")));
        }

        [Fact]
        public void PathsAreValidated()
        {
            Assert.Throws<PathException>(() => @"c:\foo".ToRelativePath());
        }

        [Fact]
        public void CanCreatePathsRelativeTo()
        {
            Assert.Equal((AbsolutePath)@"c:\foo\bar\baz.zip",
                ((RelativePath)@"baz.zip").RelativeTo((AbsolutePath)@"c:\foo\bar"));
        }

        [Fact]
        public void ObjectMethods()
        {
            Assert.Equal(@"foo\bar", ((RelativePath)@"foo\bar").ToString());

            Assert.Equal((RelativePath)@"foo\bar", (RelativePath)@"foo/bar");
            Assert.NotEqual((RelativePath)@"foo\bar", (object)42);
            Assert.True((RelativePath)@"foo\bar" == (RelativePath)@"foo/bar");
            Assert.True((RelativePath)@"foo\bar" != (RelativePath)@"foo/baz");

            Assert.Equal(((RelativePath)@"foo\bar").GetHashCode(), ((RelativePath)@"Foo\bar").GetHashCode());
        }


        [Fact]
        public void CanGetPathHashCodes()
        {
            Assert.Equal(@"foo\bar.baz".ToRelativePath().GetHashCode(), @"Foo\Bar.bAz".ToRelativePath().GetHashCode());
        }


        [Fact]
        public void CaseInsensitiveEquality()
        {
            Assert.Equal(@"foo\bar.baz".ToRelativePath(), @"Foo\Bar.bAz".ToRelativePath());
            Assert.NotEqual(@"foo\bar.baz".ToRelativePath(), (object)42);
        }

        [Fact]
        public void CanGetFilenameFromRelativePath()
        {
            Assert.Equal((RelativePath)"bar.dds", @"foo\bar.dds".ToRelativePath().FileName);
        }

        [Fact]
        public void PathsAreComparable()
        {
            var data = new[]
            {
                (RelativePath)@"a",
                (RelativePath)@"b\c",
                (RelativePath)@"d\e\f",
                (RelativePath)@"b"
            };
            var data2 = data.OrderBy(a => a).ToArray();

            var data3 = new[]
            {
                (RelativePath)@"a",
                (RelativePath)@"b",
                (RelativePath)@"b\c",
                (RelativePath)@"d\e\f"
            };
            Assert.Equal(data3, data2);
        }
    }
}