using System;
using Bit.Core.Services;
using Bit.Core.Settings;
using NSubstitute;
using Xunit;
using System.IO;
using Bit.Core.Test.AutoFixture.Attributes;
using Bit.Core.Test.AutoFixture;
using Bit.Core.Test.AutoFixture.CipherFixtures;
using Bit.Core.Models.Data;
using System.Threading.Tasks;
using Bit.Core.Models.Table;
using U2F.Core.Utils;
using Bit.Core.Test.AutoFixture.CipherAttachmentMetaData;
using AutoFixture;

namespace Bit.Core.Test.Services
{
    public class LocalAttachmentStorageServiceTests
    {

        private void AssertFileCreation(string expectedPath, string expectedFileContents)
        {
            Assert.True(File.Exists(expectedPath));
            Assert.Equal(expectedFileContents, File.ReadAllText(expectedPath));
        }

        [Theory]
        [InlineCustomAutoData(new[] { typeof(UserCipher), typeof(MetaData) })]
        [InlineCustomAutoData(new[] { typeof(UserCipher), typeof(MetaDataWithoutContainer) })]
        [InlineCustomAutoData(new[] { typeof(UserCipher), typeof(MetaDataWithoutKey) })]
        public async Task UploadNewAttachmentAsync_Success(string stream, Cipher cipher, CipherAttachment.MetaData attachmentData)
        {
            using (var tempDirectory = new TempDirectory())
            {
                var sutProvider = GetSutProvider(tempDirectory);

                await sutProvider.Sut.UploadNewAttachmentAsync(new MemoryStream(stream.GetBytes()), cipher, attachmentData);

                AssertFileCreation($"{tempDirectory}/{cipher.Id}/{attachmentData.AttachmentId}", stream);
            }
        }

        [Theory]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaData) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutContainer) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutKey) })]
        public async Task UploadShareAttachmentAsync_Success(string stream, Cipher cipher, CipherAttachment.MetaData attachmentData)
        {
            using (var tempDirectory = new TempDirectory())
            {
                var sutProvider = GetSutProvider(tempDirectory);

                await sutProvider.Sut.UploadShareAttachmentAsync(new MemoryStream(stream.GetBytes()), cipher.Id,
                    cipher.OrganizationId.Value, attachmentData);

                AssertFileCreation($"{tempDirectory}/temp/{cipher.Id}/{cipher.OrganizationId}/{attachmentData.AttachmentId}", stream);
            }
        }

        [Theory]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaData) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutContainer) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutKey) })]
        public async Task StartShareAttachmentAsync_NoSource_NoWork(Cipher cipher, CipherAttachment.MetaData attachmentData)
        {
            using (var tempDirectory = new TempDirectory())
            {
                var sutProvider = GetSutProvider(tempDirectory);

                await sutProvider.Sut.StartShareAttachmentAsync(cipher.Id, cipher.OrganizationId.Value, attachmentData);

                Assert.False(File.Exists($"{tempDirectory}/{cipher.Id}/{attachmentData.AttachmentId}"));
                Assert.False(File.Exists($"{tempDirectory}/{cipher.Id}/{attachmentData.AttachmentId}"));
            }
        }

        [Theory]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaData) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutContainer) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutKey) })]
        public async Task StartShareAttachmentAsync_NoDest_NoWork(string source, Cipher cipher, CipherAttachment.MetaData attachmentData)
        {
            using (var tempDirectory = new TempDirectory())
            {
                var sutProvider = GetSutProvider(tempDirectory);

                var sourcePath = $"{tempDirectory}/temp/{cipher.Id}/{cipher.OrganizationId}/{attachmentData.AttachmentId}";
                var destPath = $"{tempDirectory}/{cipher.Id}/{attachmentData.AttachmentId}";
                var rollBackPath = $"{tempDirectory}/temp/{cipher.Id}/{attachmentData.AttachmentId}";
                Directory.CreateDirectory(Path.GetDirectoryName(sourcePath));
                File.WriteAllText(sourcePath, source);

                await sutProvider.Sut.StartShareAttachmentAsync(cipher.Id, cipher.OrganizationId.Value, attachmentData);

                Assert.True(File.Exists(sourcePath));
                Assert.Equal(source, File.ReadAllText(sourcePath));
                Assert.False(File.Exists(destPath));
                Assert.False(File.Exists(rollBackPath));
            }
        }


        [Theory]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaData) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutContainer) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutKey) })]
        public async Task StartShareAttachmentAsync_Success(string source, string destOriginal, Cipher cipher, CipherAttachment.MetaData attachmentData)
        {
            using (var tempDirectory = new TempDirectory())
            {
                await StartShareAttachmentAsync(source, destOriginal, cipher, attachmentData, tempDirectory);
            }
        }

        [Theory]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaData) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutContainer) })]
        [InlineCustomAutoData(new[] { typeof(OrganizationCipher), typeof(MetaDataWithoutKey) })]
        public async Task RollbackShareAttachmentAsync_Success(string source, string destOriginal, Cipher cipher, CipherAttachment.MetaData attachmentData)
        {
            using (var tempDirectory = new TempDirectory())
            {
                var sutProvider = GetSutProvider(tempDirectory);

                var sourcePath = $"{tempDirectory}/temp/{cipher.Id}/{cipher.OrganizationId}/{attachmentData.AttachmentId}";
                var destPath = $"{tempDirectory}/{cipher.Id}/{attachmentData.AttachmentId}";
                var rollBackPath = $"{tempDirectory}/temp/{cipher.Id}/{attachmentData.AttachmentId}";

                await StartShareAttachmentAsync(source, destOriginal, cipher, attachmentData, tempDirectory);
                await sutProvider.Sut.RollbackShareAttachmentAsync(cipher.Id, cipher.OrganizationId.Value, attachmentData, "Not Used Here");

                Assert.True(File.Exists(destPath));
                Assert.Equal(destOriginal, File.ReadAllText(destPath));
                Assert.False(File.Exists(sourcePath));
                Assert.False(File.Exists(rollBackPath));
            }
        }

        [Theory]
        [InlineCustomAutoData(new[] { typeof(UserCipher), typeof(MetaData) })]
        [InlineCustomAutoData(new[] { typeof(UserCipher), typeof(MetaDataWithoutContainer) })]
        [InlineCustomAutoData(new[] { typeof(UserCipher), typeof(MetaDataWithoutKey) })]
        public async Task DeleteAttachmentAsync_Success(Cipher cipher, CipherAttachment.MetaData attachmentData)
        {
            using (var tempDirectory = new TempDirectory())
            {
                var sutProvider = GetSutProvider(tempDirectory);

                var expectedPath = $"{tempDirectory}/{cipher.Id}/{attachmentData.AttachmentId}";
                Directory.CreateDirectory(Path.GetDirectoryName(expectedPath));
                File.Create(expectedPath).Close();

                await sutProvider.Sut.DeleteAttachmentAsync(cipher.Id, attachmentData);

                Assert.False(File.Exists(expectedPath));
            }
        }

        [Theory]
        [InlineUserCipherAutoData]
        [InlineOrganizationCipherAutoData]
        public async Task CleanupAsync_Succes(Cipher cipher)
        {
            using (var tempDirectory = new TempDirectory())
            {
                var sutProvider = GetSutProvider(tempDirectory);

                var tempPath = $"{tempDirectory}/temp/{cipher.Id}";
                var permPath = $"{tempDirectory}/{cipher.Id}";
                Directory.CreateDirectory(tempPath);
                Directory.CreateDirectory(permPath);

                await sutProvider.Sut.CleanupAsync(cipher.Id);

                Assert.False(Directory.Exists(tempPath));
                Assert.True(Directory.Exists(permPath));
            }
        }

        [Theory]
        [InlineUserCipherAutoData]
        [InlineOrganizationCipherAutoData]
        public async Task DeleteAttachmentsForCipherAsync_Succes(Cipher cipher)
        {
            using (var tempDirectory = new TempDirectory())
            {
                var sutProvider = GetSutProvider(tempDirectory);

                var tempPath = $"{tempDirectory}/temp/{cipher.Id}";
                var permPath = $"{tempDirectory}/{cipher.Id}";
                Directory.CreateDirectory(tempPath);
                Directory.CreateDirectory(permPath);

                await sutProvider.Sut.DeleteAttachmentsForCipherAsync(cipher.Id);

                Assert.True(Directory.Exists(tempPath));
                Assert.False(Directory.Exists(permPath));
            }
        }

        private async Task StartShareAttachmentAsync(string source, string destOriginal, Cipher cipher,
            CipherAttachment.MetaData attachmentData, TempDirectory tempDirectory)
        {
            var sutProvider = GetSutProvider(tempDirectory);

            var sourcePath = $"{tempDirectory}/temp/{cipher.Id}/{cipher.OrganizationId}/{attachmentData.AttachmentId}";
            var destPath = $"{tempDirectory}/{cipher.Id}/{attachmentData.AttachmentId}";
            var rollBackPath = $"{tempDirectory}/temp/{cipher.Id}/{attachmentData.AttachmentId}";
            Directory.CreateDirectory(Path.GetDirectoryName(sourcePath));
            Directory.CreateDirectory(Path.GetDirectoryName(destPath));
            File.WriteAllText(sourcePath, source);
            File.WriteAllText(destPath, destOriginal);

            await sutProvider.Sut.StartShareAttachmentAsync(cipher.Id, cipher.OrganizationId.Value, attachmentData);

            Assert.False(File.Exists(sourcePath));
            Assert.True(File.Exists(destPath));
            Assert.Equal(source, File.ReadAllText(destPath));
            Assert.True(File.Exists(rollBackPath));
            Assert.Equal(destOriginal, File.ReadAllText(rollBackPath));
        }

        private SutProvider<LocalAttachmentStorageService> GetSutProvider(TempDirectory tempDirectory)
        {
            var fixture = new Fixture().WithAutoNSubstitutions();
            fixture.Freeze<IGlobalSettings>().Attachment.BaseDirectory.Returns(tempDirectory.Directory);
            fixture.Freeze<IGlobalSettings>().Attachment.BaseUrl.Returns(Guid.NewGuid().ToString());

            return new SutProvider<LocalAttachmentStorageService>(fixture).Create();
        }
    }
}