using System.Linq;
using Autofac;
using Nitride.IO.Contents;
using Nitride.IO.Paths;
using Xunit;
using Xunit.Abstractions;
using Zio;
using Zio.FileSystems;

namespace Nitride.IO.Tests
{
    public class RemovePathPrefixTests : NitrideIOTestsBase
    {
        private readonly MemoryFileSystem fileSystem;

        public RemovePathPrefixTests(ITestOutputHelper output)
            : base(output)
        {
            this.fileSystem = new MemoryFileSystem();
            this.fileSystem.CreateDirectory("/a");
            this.fileSystem.CreateDirectory("/a/a");
            this.fileSystem.CreateFile("/a/b1.txt");
            this.fileSystem.CreateFile("/a/a/c1.md");
        }

        [Fact]
        public void PrefixAllFiles()
        {
            // Set up the operation.
            var readFiles = this.Container.Resolve<ReadFiles.Factory>();
            var op = new RemovePathPrefix("/a");

            // Read and replace the paths.
            IOrderedEnumerable<string> output = readFiles(this.fileSystem)
                .Read()
                .Run(op)
                .Select(x => x.Get<UPath>().ToString())
                .OrderBy(x => x);

            // Verify the results.
            Assert.Equal(
                new[]
                {
                    "/a/c1.md",
                    "/b1.txt",
                },
                output);
        }
    }
}