using LibHac.Common;
using LibHac.Fs;
using LibHac.Fs.Shim;
using Xunit;

namespace LibHac.Tests.Fs.FileSystemClientTests.ShimTests
{
    public class Bis
    {
        [Fact]
        public void MountBis_MountCalibrationPartition_OpensCorrectDirectory()
        {
            FileSystemClient fs = FileSystemServerFactory.CreateClient(out IFileSystem rootFs);

            Assert.Success(fs.MountBis("calib".ToU8Span(), BisPartitionId.CalibrationFile));

            // Create a file in the opened file system
            Assert.Success(fs.CreateFile("calib:/file".ToU8Span(), 0));

            // Make sure the file exists on the root file system
            Assert.Success(rootFs.GetEntryType(out DirectoryEntryType type, "/bis/cal/file".ToU8Span()));
            Assert.Equal(DirectoryEntryType.File, type);
        }
        [Fact]
        public void MountBis_MountSafePartition_OpensCorrectDirectory()
        {
            FileSystemClient fs = FileSystemServerFactory.CreateClient(out IFileSystem rootFs);

            Assert.Success(fs.MountBis("safe".ToU8Span(), BisPartitionId.SafeMode));

            // Create a file in the opened file system
            Assert.Success(fs.CreateFile("safe:/file".ToU8Span(), 0));

            // Make sure the file exists on the root file system
            Assert.Success(rootFs.GetEntryType(out DirectoryEntryType type, "/bis/safe/file".ToU8Span()));
            Assert.Equal(DirectoryEntryType.File, type);
        }

        [Fact]
        public void MountBis_MountSystemPartition_OpensCorrectDirectory()
        {
            FileSystemClient fs = FileSystemServerFactory.CreateClient(out IFileSystem rootFs);

            Assert.Success(fs.MountBis("system".ToU8Span(), BisPartitionId.System));

            // Create a file in the opened file system
            Assert.Success(fs.CreateFile("system:/file".ToU8Span(), 0));

            // Make sure the file exists on the root file system
            Assert.Success(rootFs.GetEntryType(out DirectoryEntryType type, "/bis/system/file".ToU8Span()));
            Assert.Equal(DirectoryEntryType.File, type);
        }

        [Fact]
        public void MountBis_MountUserPartition_OpensCorrectDirectory()
        {
            FileSystemClient fs = FileSystemServerFactory.CreateClient(out IFileSystem rootFs);

            Assert.Success(fs.MountBis("user".ToU8Span(), BisPartitionId.User));

            // Create a file in the opened file system
            Assert.Success(fs.CreateFile("user:/file".ToU8Span(), 0));

            // Make sure the file exists on the root file system
            Assert.Success(rootFs.GetEntryType(out DirectoryEntryType type, "/bis/user/file".ToU8Span()));
            Assert.Equal(DirectoryEntryType.File, type);
        }

        [Fact]
        public void MountBis_WithRootPath_IgnoresRootPath()
        {
            FileSystemClient fs = FileSystemServerFactory.CreateClient(out IFileSystem rootFs);

            Assert.Success(fs.MountBis(BisPartitionId.User, "/sub".ToU8Span()));

            // Create a file in the opened file system
            Assert.Success(fs.CreateFile("@User:/file".ToU8Span(), 0));

            // Make sure the file wasn't created in the sub path
            Assert.Result(ResultFs.PathNotFound, rootFs.GetEntryType(out _, "/bis/user/sub/file".ToU8Span()));

            // Make sure the file was created in the main path
            Assert.Success(rootFs.GetEntryType(out DirectoryEntryType type, "/bis/user/file".ToU8Span()));
            Assert.Equal(DirectoryEntryType.File, type);
        }

        [Fact]
        public void MountBis_InvalidPartition_ReturnsInvalidArgument()
        {
            FileSystemClient fs = FileSystemServerFactory.CreateClient(out IFileSystem rootFs);

            Assert.Result(ResultFs.InvalidArgument, fs.MountBis("boot1".ToU8Span(), BisPartitionId.BootPartition1Root));
        }
    }
}