using System.Diagnostics.CodeAnalysis;
using System.Security.Cryptography;

using FrostFS.SDK.Client;
using FrostFS.SDK.Client.Interfaces;
using FrostFS.SDK.Cryptography;
using FrostFS.SDK.SmokeTests;

namespace FrostFS.SDK.Tests.Smoke;

[SuppressMessage("Reliability", "CA2007:Consider calling ConfigureAwait on the awaited task", Justification = "Default Value is correct for tests")]
[SuppressMessage("Security", "CA5394:Do not use insecure randomness", Justification = "No secure purpose")]
public class MultithreadSmokeClientTests : SmokeTestsBase
{
    [Fact]
    public async void AccountTest()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        var result = await client.GetBalanceAsync(default);

        Assert.NotNull(result);
        Assert.True(result.Value == 0);
    }

    [Fact]
    public async void NetworkMapTest()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        var result = await client.GetNetmapSnapshotAsync(default);

        Assert.True(result.Epoch > 0);
        Assert.Single(result.NodeInfoCollection);

        var item = result.NodeInfoCollection[0];
        Assert.Equal(2, item.Version.Major);
        Assert.Equal(13, item.Version.Minor);
        Assert.Equal(NodeState.Online, item.State);
        Assert.True(item.PublicKey.Length > 0);
        Assert.Single(item.Addresses);
        Assert.Equal(9, item.Attributes.Count);
    }


    [Fact]
    public async void NodeInfoTest()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        var result = await client.GetNodeInfoAsync(default);

        Assert.Equal(2, result.Version.Major);
        Assert.Equal(13, result.Version.Minor);
        Assert.Equal(NodeState.Online, result.State);
        Assert.Equal(33, result.PublicKey.Length);
        Assert.Single(result.Addresses);
        Assert.Equal(9, result.Attributes.Count);
    }

    [Fact]
    public async void NodeInfoStatisticsTest()
    {
        var options = ClientOptions;

        var callbackContent = string.Empty;
        options.Value.Callback = (cs) => callbackContent = $"{cs.MethodName} took {cs.ElapsedMicroSeconds} microseconds";

        var client = FrostFSClient.GetInstance(options, GrpcChannel);

        var result = await client.GetNodeInfoAsync(default);

        Assert.NotEmpty(callbackContent);
    }

    [Fact]
    public async void GetSessionTest()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        var token = await client.CreateSessionAsync(new(100), default);

        Assert.NotNull(token);
        Assert.NotEqual(Guid.Empty, token.Id);
        Assert.Equal(33, token.SessionKey.Length);
    }

    [Fact]
    public async void CreateObjectWithSessionToken()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        await Cleanup(client);

        var token = await client.CreateSessionAsync(new PrmSessionCreate(int.MaxValue), default);

        var createContainerParam = new PrmContainerCreate(
            new FrostFsContainerInfo(new FrostFsPlacementPolicy(true, 1, [], [], new FrostFsReplica(1))),
            PrmWait.DefaultParams,
            xheaders: ["key1", "value1"]);

        var containerId = await client.PutContainerAsync(createContainerParam, default);

        var bytes = GetRandomBytes(1024);

        var param = new PrmObjectPut(
            new FrostFsObjectHeader(
                containerId: containerId,
                type: FrostFsObjectType.Regular,
                [new FrostFsAttributePair("fileName", "test")]),
            sessionToken: token);

        var stream = await client.PutObjectAsync(param, default).ConfigureAwait(true);

        await stream.WriteAsync(bytes.AsMemory());
        var objectId = await stream.CompleteAsync();

        var @object = await client.GetObjectAsync(new PrmObjectGet(containerId, objectId), default)
            .ConfigureAwait(true);

        var downloadedBytes = new byte[@object.Header.PayloadLength];
        MemoryStream ms = new(downloadedBytes);

        ReadOnlyMemory<byte>? chunk = null;
        while ((chunk = await @object.ObjectReader!.ReadChunk().ConfigureAwait(true)) != null)
        {
            ms.Write(chunk.Value.Span);
        }

        Assert.Equal(SHA256.HashData(bytes), SHA256.HashData(downloadedBytes));

        await Cleanup(client).ConfigureAwait(true);
    }

    [Fact]
    public async void FilterTest()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        await Cleanup(client);

        var createContainerParam = new PrmContainerCreate(
            new FrostFsContainerInfo(new FrostFsPlacementPolicy(true, 1, [], [], new FrostFsReplica(1))),
            lightWait);

        var containerId = await client.PutContainerAsync(createContainerParam, default);

        var bytes = new byte[] { 1, 2, 3 };

        var ParentHeader = new FrostFsObjectHeader(
                containerId: containerId,
                type: FrostFsObjectType.Regular)
        {
            PayloadLength = 3
        };

        var param = new PrmObjectPut(
            new FrostFsObjectHeader(
                containerId: containerId,
                type: FrostFsObjectType.Regular,
                [new FrostFsAttributePair("fileName", "test")],
                new FrostFsSplit()));

        var stream = await client.PutObjectAsync(param, default).ConfigureAwait(true);

        await stream.WriteAsync(bytes.AsMemory());
        var objectId = await stream.CompleteAsync();

        var head = await client.GetObjectHeadAsync(new PrmObjectHeadGet(containerId, objectId), default);

        var ecdsaKey = keyString.LoadWif();

        var networkInfo = await client.GetNetmapSnapshotAsync(default);

        await CheckFilter(client, containerId, new FilterByContainerId(FrostFsMatchType.Equals, containerId));

        await CheckFilter(client, containerId, new FilterByOwnerId(FrostFsMatchType.Equals, FrostFsOwner.FromKey(ecdsaKey)));

        await CheckFilter(client, containerId, new FilterBySplitId(FrostFsMatchType.Equals, param.Header!.Split!.SplitId));

        await CheckFilter(client, containerId, new FilterByAttributePair(FrostFsMatchType.Equals, "fileName", "test"));

        await CheckFilter(client, containerId, new FilterByObjectId(FrostFsMatchType.Equals, objectId));

        await CheckFilter(client, containerId, new FilterByVersion(FrostFsMatchType.Equals, networkInfo.NodeInfoCollection[0].Version));

        await CheckFilter(client, containerId, new FilterByEpoch(FrostFsMatchType.Equals, networkInfo.Epoch));

        await CheckFilter(client, containerId, new FilterByPayloadLength(FrostFsMatchType.Equals, 3));

        var checkSum = CheckSum.CreateCheckSum(bytes);

        await CheckFilter(client, containerId, new FilterByPayloadHash(FrostFsMatchType.Equals, checkSum));

        await CheckFilter(client, containerId, new FilterByPhysicallyStored());
    }

    private static async Task CheckFilter(IFrostFSClient client, FrostFsContainerId containerId, IObjectFilter filter)
    {
        var resultObjectsCount = 0;

        PrmObjectSearch searchParam = new(containerId, null, [], filter);

        await foreach (var objId in client.SearchObjectsAsync(searchParam, default))
        {
            resultObjectsCount++;
            var objHeader = await client.GetObjectHeadAsync(new PrmObjectHeadGet(containerId, objId), default);
        }

        Assert.True(0 < resultObjectsCount, $"Filter for {filter.Key} doesn't work");
    }

    [Theory]
    [InlineData(1)]
    [InlineData(3 * 1024 * 1024)]            // exactly one chunk size - 3MB
    [InlineData(6 * 1024 * 1024 + 100)]
    public async void SimpleScenarioTest(int objectSize)
    {
        bool callbackInvoked = false;

        var options = ClientOptions;

        options.Value.Callback = new((cs) =>
        {
            callbackInvoked = true;
            Assert.True(cs.ElapsedMicroSeconds > 0);
        });

        var client = FrostFSClient.GetInstance(options, GrpcChannel);

        await Cleanup(client);

        var ctx = new CallContext(TimeSpan.FromSeconds(20));

        var createContainerParam = new PrmContainerCreate(
            new FrostFsContainerInfo(new FrostFsPlacementPolicy(true, 1, [], [], new FrostFsReplica(1))),
            PrmWait.DefaultParams,
            xheaders: ["testKey", "testValue"]);

        var createdContainer = await client.PutContainerAsync(createContainerParam, ctx);

        var container = await client.GetContainerAsync(new PrmContainerGet(createdContainer), default);
        Assert.NotNull(container);
        Assert.True(callbackInvoked);

        var bytes = GetRandomBytes(objectSize);

        var param = new PrmObjectPut(
            new FrostFsObjectHeader(
                containerId: createdContainer,
                type: FrostFsObjectType.Regular,
                [new FrostFsAttributePair("fileName", "test")]));

        var stream = await client.PutObjectAsync(param, default).ConfigureAwait(true);

        await stream.WriteAsync(bytes.AsMemory());
        var objectId = await stream.CompleteAsync();

        var filter = new FilterByAttributePair(FrostFsMatchType.Equals, "fileName", "test");

        bool hasObject = false;
        await foreach (var objId in client.SearchObjectsAsync(new PrmObjectSearch(createdContainer, null, [], filter), default))
        {
            hasObject = true;

            var res = await client.GetObjectHeadAsync(new PrmObjectHeadGet(createdContainer, objectId), default);
            var objHeader = res.HeaderInfo;
            Assert.NotNull(objHeader);
            Assert.Equal((ulong)bytes.Length, objHeader.PayloadLength);
            Assert.NotNull(objHeader.Attributes);
            Assert.Single(objHeader.Attributes);
            Assert.Equal("fileName", objHeader.Attributes.First().Key);
            Assert.Equal("test", objHeader.Attributes.First().Value);
        }

        Assert.True(hasObject);

        var @object = await client.GetObjectAsync(new PrmObjectGet(createdContainer, objectId), default);

        var downloadedBytes = new byte[@object.Header.PayloadLength];
        MemoryStream ms = new(downloadedBytes);

        ReadOnlyMemory<byte>? chunk = null;
        while ((chunk = await @object.ObjectReader!.ReadChunk()) != null)
        {
            ms.Write(chunk.Value.Span);
        }

        Assert.Equal(SHA256.HashData(bytes), SHA256.HashData(downloadedBytes));

        await Cleanup(client);

        await foreach (var _ in client.ListContainersAsync(default, default))
        {
            Assert.Fail("Containers exist");
        }
    }

    [Fact]
    public async void PatchTest()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        await Cleanup(client);

        var createContainerParam = new PrmContainerCreate(
            new FrostFsContainerInfo(new FrostFsPlacementPolicy(true, 1, [], [], new FrostFsReplica(1))),
            PrmWait.DefaultParams,
            xheaders: ["testKey", "testValue"]);

        var createdContainer = await client.PutContainerAsync(createContainerParam, default);

        var container = await client.GetContainerAsync(new PrmContainerGet(createdContainer), default);
        Assert.NotNull(container);

        var bytes = new byte[1024];
        for (int i = 0; i < 1024; i++)
        {
            bytes[i] = 31;
        }

        var param = new PrmObjectPut(
            new FrostFsObjectHeader(
                containerId: createdContainer,
                type: FrostFsObjectType.Regular,
                [new FrostFsAttributePair("fileName", "test")]));

        var stream = await client.PutObjectAsync(param, default).ConfigureAwait(true);

        await stream.WriteAsync(bytes.AsMemory());
        var objectId = await stream.CompleteAsync();

        var patch = new byte[16];
        for (int i = 0; i < 16; i++)
        {
            patch[i] = 32;
        }

        var range = new FrostFsRange(8, (ulong)patch.Length);

        var patchParams = new PrmObjectPatch(
            new FrostFsAddress(createdContainer, objectId),
            payload: new MemoryStream(patch),
            maxChunkLength: 32,
            range: range);

        var newIbjId = await client.PatchObjectAsync(patchParams, default);

        var @object = await client.GetObjectAsync(new PrmObjectGet(createdContainer, newIbjId), default);

        var downloadedBytes = new byte[@object.Header.PayloadLength];
        MemoryStream ms = new(downloadedBytes);

        ReadOnlyMemory<byte>? chunk = null;
        while ((chunk = await @object.ObjectReader!.ReadChunk()) != null)
        {
            ms.Write(chunk.Value.Span);
        }

        for (int i = 0; i < (int)range.Offset; i++)
            Assert.Equal(downloadedBytes[i], bytes[i]);

        var rangeEnd = range.Offset + range.Length;

        for (int i = (int)range.Offset; i < (int)rangeEnd; i++)
            Assert.Equal(downloadedBytes[i], patch[i - (int)range.Offset]);

        for (int i = (int)rangeEnd; i < bytes.Length; i++)
            Assert.Equal(downloadedBytes[i], bytes[i]);

        await Cleanup(client);

        await foreach (var _ in client.ListContainersAsync(default, default))
        {
            Assert.Fail("Containers exist");
        }
    }

    [Fact]
    public async void RangeTest()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        await Cleanup(client);

        var createContainerParam = new PrmContainerCreate(
            new FrostFsContainerInfo(new FrostFsPlacementPolicy(true, 1, [], [], new FrostFsReplica(1))),
            PrmWait.DefaultParams,
            xheaders: ["testKey", "testValue"]);

        var createdContainer = await client.PutContainerAsync(createContainerParam, default);

        var container = await client.GetContainerAsync(new PrmContainerGet(createdContainer), default);
        Assert.NotNull(container);

        var bytes = new byte[256];
        for (int i = 0; i < 256; i++)
        {
            bytes[i] = (byte)i;
        }

        var param = new PrmObjectPut(
            new FrostFsObjectHeader(containerId: createdContainer, type: FrostFsObjectType.Regular));

        var stream = await client.PutObjectAsync(param, default).ConfigureAwait(true);

        await stream.WriteAsync(bytes.AsMemory());
        var objectId = await stream.CompleteAsync();

        var rangeParam = new PrmRangeGet(createdContainer, objectId, new FrostFsRange(100, 64));

        var rangeReader = await client.GetRangeAsync(rangeParam, default);

        var downloadedBytes = new byte[rangeParam.Range.Length];
        MemoryStream ms = new(downloadedBytes);

        ReadOnlyMemory<byte>? chunk = null;
        while ((chunk = await rangeReader!.ReadChunk()) != null)
        {
            ms.Write(chunk.Value.Span);
        }

        Assert.Equal(SHA256.HashData(bytes.AsSpan().Slice(100, 64)), SHA256.HashData(downloadedBytes));

        await Cleanup(client);

        await foreach (var _ in client.ListContainersAsync(default, default))
        {
            Assert.Fail("Containers exist");
        }
    }

    [Fact]
    public async void RangeHashTest()
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);

        await Cleanup(client);

        var createContainerParam = new PrmContainerCreate(
            new FrostFsContainerInfo(new FrostFsPlacementPolicy(true, 1, [], [], new FrostFsReplica(1))),
            PrmWait.DefaultParams,
            xheaders: ["testKey", "testValue"]);

        var createdContainer = await client.PutContainerAsync(createContainerParam, default);

        var container = await client.GetContainerAsync(new PrmContainerGet(createdContainer), default);
        Assert.NotNull(container);

        var bytes = new byte[256];
        for (int i = 0; i < 256; i++)
        {
            bytes[i] = (byte)i;
        }

        var param = new PrmObjectPut(
            new FrostFsObjectHeader(
                containerId: createdContainer,
                type: FrostFsObjectType.Regular));

        var stream = await client.PutObjectAsync(param, default).ConfigureAwait(true);

        await stream.WriteAsync(bytes.AsMemory());
        var objectId = await stream.CompleteAsync();

        var rangeParam = new PrmRangeHashGet(createdContainer, objectId, [new FrostFsRange(100, 64)], bytes);

        var hashes = await client.GetRangeHashAsync(rangeParam, default);

        foreach (var hash in hashes)
        {
            var x = hash[..32].ToArray();
        }

        await Cleanup(client);

        await foreach (var _ in client.ListContainersAsync(default, default))
        {
            Assert.Fail("Containers exist");
        }
    }

    [Theory]
    [InlineData(1)]
    [InlineData(3 * 1024 * 1024)]            // exactly one chunk size - 3MB
    [InlineData(6 * 1024 * 1024 + 100)]
    public async void SimpleScenarioWithSessionTest(int objectSize)
    {
        var client = FrostFSClient.GetInstance(ClientOptions, GrpcChannel);
        //Callback = new((CallStatistics cs) => Assert.True(cs.ElapsedMicroSeconds > 0))
        var token = await client.CreateSessionAsync(new PrmSessionCreate(int.MaxValue), default);

        await Cleanup(client);

        var ctx = new CallContext(TimeSpan.FromSeconds(20));

        var createContainerParam = new PrmContainerCreate(
            new FrostFsContainerInfo(new FrostFsPlacementPolicy(true, 1, [], [], new FrostFsReplica(1))),
            PrmWait.DefaultParams);

        var container = await client.PutContainerAsync(createContainerParam, ctx);

        var containerInfo = await client.GetContainerAsync(new PrmContainerGet(container), ctx);
        Assert.NotNull(containerInfo);

        var bytes = GetRandomBytes(objectSize);

        var param = new PrmObjectPut(
            new FrostFsObjectHeader(
                containerId: container,
                type: FrostFsObjectType.Regular,
                [new FrostFsAttributePair("fileName", "test")]),
            sessionToken: token);

        var stream = await client.PutObjectAsync(param, default).ConfigureAwait(true);

        await stream.WriteAsync(bytes.AsMemory());
        var objectId = await stream.CompleteAsync();

        var filter = new FilterByAttributePair(FrostFsMatchType.Equals, "fileName", "test");

        bool hasObject = false;
        await foreach (var objId in client.SearchObjectsAsync(
            new PrmObjectSearch(container, token, [], filter), default))
        {
            hasObject = true;

            var res = await client.GetObjectHeadAsync(new PrmObjectHeadGet(container, objectId, false, token), default);

            var objHeader = res.HeaderInfo;
            Assert.NotNull(objHeader);
            Assert.Equal((ulong)bytes.Length, objHeader.PayloadLength);
            Assert.NotNull(objHeader.Attributes);
            Assert.Single(objHeader.Attributes);
            Assert.Equal("fileName", objHeader.Attributes.First().Key);
            Assert.Equal("test", objHeader.Attributes.First().Value);
        }

        Assert.True(hasObject);

        var @object = await client.GetObjectAsync(new PrmObjectGet(container, objectId, token), default);

        var downloadedBytes = new byte[@object.Header.PayloadLength];
        MemoryStream ms = new(downloadedBytes);

        ReadOnlyMemory<byte>? chunk = null;
        while ((chunk = await @object.ObjectReader!.ReadChunk()) != null)
        {
            ms.Write(chunk.Value.Span);
        }

        Assert.Equal(SHA256.HashData(bytes), SHA256.HashData(downloadedBytes));

        await Cleanup(client);

        await foreach (var _ in client.ListContainersAsync(default, default))
        {
            Assert.Fail("Containers exist");
        }
    }

    [Theory]
    [InlineData(1)]
    [InlineData(64 * 1024 * 1024)]      // exactly 1 block size - 64MB
    [InlineData(64 * 1024 * 1024 - 1)]
    [InlineData(64 * 1024 * 1024 + 1)]
    [InlineData(2 * 64 * 1024 * 1024 + 256)]
    [InlineData(200)]
    public async void ClientCutScenarioTest(int objectSize)
    {
        var options = ClientOptions;
        options.Value.Interceptors.Add(new CallbackInterceptor());

        var client = FrostFSClient.GetInstance(options, GrpcChannel);

        await Cleanup(client);

        var createContainerParam = new PrmContainerCreate(
            new FrostFsContainerInfo(new FrostFsPlacementPolicy(true, 1, [], [], new FrostFsReplica(1))),
            lightWait);

        var containerId = await client.PutContainerAsync(createContainerParam, default);

        var ctx = new CallContext(TimeSpan.FromSeconds(10));

        var container = await client.GetContainerAsync(new PrmContainerGet(containerId), ctx);

        Assert.NotNull(container);

        byte[] bytes = GetRandomBytes(objectSize);

        var param = new PrmObjectClientCutPut(
            new FrostFsObjectHeader(
                containerId: containerId,
                type: FrostFsObjectType.Regular,
                [new FrostFsAttributePair("fileName", "test")]),
            payload: new MemoryStream(bytes));

        var objectId = await client.PutClientCutObjectAsync(param, default).ConfigureAwait(true);

        var filter = new FilterByAttributePair(FrostFsMatchType.Equals, "fileName", "test");

        bool hasObject = false;
        await foreach (var objId in client.SearchObjectsAsync(new PrmObjectSearch(containerId, null, [], filter), default))
        {
            hasObject = true;

            var res = await client.GetObjectHeadAsync(new PrmObjectHeadGet(containerId, objectId), default);

            var objHeader = res.HeaderInfo;
            Assert.NotNull(objHeader);
            Assert.Equal((ulong)bytes.Length, objHeader.PayloadLength);
            Assert.NotNull(objHeader.Attributes);
            Assert.Single(objHeader.Attributes);
            Assert.Equal("fileName", objHeader.Attributes[0].Key);
            Assert.Equal("test", objHeader.Attributes[0].Value);
        }

        Assert.True(hasObject);

        var @object = await client.GetObjectAsync(new PrmObjectGet(containerId, objectId), default);

        var downloadedBytes = new byte[@object.Header.PayloadLength];
        MemoryStream ms = new(downloadedBytes);

        ReadOnlyMemory<byte>? chunk = null;
        while ((chunk = await @object.ObjectReader!.ReadChunk()) != null)
        {
            ms.Write(chunk.Value.Span);
        }

        Assert.Equal(SHA256.HashData(bytes), SHA256.HashData(downloadedBytes));

        await CheckFilter(client, containerId, new FilterByRootObject());

        await Cleanup(client);

        var deadline = DateTime.UtcNow.Add(TimeSpan.FromSeconds(5));

        IAsyncEnumerator<FrostFsContainerId>? enumerator = null;
        do
        {
            if (deadline <= DateTime.UtcNow)
            {
                Assert.Fail("Containers exist");
                break;
            }

            enumerator = client.ListContainersAsync(default, default).GetAsyncEnumerator();
            await Task.Delay(500);
        }
        while (await enumerator!.MoveNextAsync());
    }

    [Fact]
    public async void NodeInfoCallbackAndInterceptorTest()
    {
        bool callbackInvoked = false;
        bool intercepterInvoked = false;

        var options = ClientOptions;
        options.Value.Callback = (cs) =>
        {
            callbackInvoked = true;
            Assert.True(cs.ElapsedMicroSeconds > 0);
        };

        options.Value.Interceptors.Add(new CallbackInterceptor(s => intercepterInvoked = true));

        var client = FrostFSClient.GetInstance(options, GrpcChannel);

        var result = await client.GetNodeInfoAsync(default);

        Assert.True(callbackInvoked);
        Assert.True(intercepterInvoked);

        Assert.Equal(2, result.Version.Major);
        Assert.Equal(13, result.Version.Minor);
        Assert.Equal(NodeState.Online, result.State);
        Assert.Equal(33, result.PublicKey.Length);
        Assert.Single(result.Addresses);
        Assert.Equal(9, result.Attributes.Count);
    }
}