// Copyright (c) .NET Foundation. All rights reserved.
// Licensed under the Apache License, Version 2.0. See License.txt in the project root for license information.

using System.Collections.Generic;
using System.Text;
using System.Threading.Tasks;
using Moq;
using Xunit;

namespace Microsoft.AspNetCore.SignalR.Tests
{
    public class ClientHubProxyTests
    {
        public class FakeHub : Hub
        {
        }

        [Fact]
        public async Task UserProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendUserAsync(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<object[]>()))
                .Callback<string, string, object[]>((userId, methodName, args) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new UserProxy<FakeHub>(o.Object, string.Empty);

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[]) Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }

        [Fact]
        public async Task MultipleUserProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendUsersAsync(It.IsAny<IReadOnlyList<string>>(), It.IsAny<string>(), It.IsAny<object[]>()))
                .Callback<IReadOnlyList<string>, string, object[]>((userIds, methodName, args) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new MultipleUserProxy<FakeHub>(o.Object, new List<string>());

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[])Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }

        [Fact]
        public async Task GroupProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendGroupAsync(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<object[]>()))
                .Callback<string, string, object[]>((groupName, methodName, args) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new GroupProxy<FakeHub>(o.Object, string.Empty);

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[])Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }

        [Fact]
        public async Task MultipleGroupProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendGroupsAsync(It.IsAny<IReadOnlyList<string>>(), It.IsAny<string>(), It.IsAny<object[]>()))
                .Callback<IReadOnlyList<string>, string, object[]>((groupNames, methodName, args) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new MultipleGroupProxy<FakeHub>(o.Object, new List<string>());

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[])Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }

        [Fact]
        public async Task GroupExceptProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendGroupExceptAsync(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<object[]>(), It.IsAny<IReadOnlyList<string>>()))
                .Callback<string, string, object[], IReadOnlyList<string>>((groupName, methodName, args, excludedIds) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new GroupExceptProxy<FakeHub>(o.Object, string.Empty, new List<string>());

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[])Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }

        [Fact]
        public async Task AllClientProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendAllAsync(It.IsAny<string>(), It.IsAny<object[]>()))
                .Callback<string, object[]>((methodName, args) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new AllClientProxy<FakeHub>(o.Object);

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[])Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }

        [Fact]
        public async Task AllClientsExceptProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendAllExceptAsync(It.IsAny<string>(), It.IsAny<object[]>(), It.IsAny<IReadOnlyList<string>>()))
                .Callback<string, object[], IReadOnlyList<string>>((methodName, args, excludedIds) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new AllClientsExceptProxy<FakeHub>(o.Object, new List<string>());

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[])Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }

        [Fact]
        public async Task SingleClientProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendConnectionAsync(It.IsAny<string>(), It.IsAny<string>(), It.IsAny<object[]>()))
                .Callback<string, string, object[]>((connectionId, methodName, args) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new SingleClientProxy<FakeHub>(o.Object, string.Empty);

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[])Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }

        [Fact]
        public async Task MultipleClientProxy_SendAsync_ArrayArgumentNotExpanded()
        {
            object[] resultArgs = null;

            var o = new Mock<HubLifetimeManager<FakeHub>>();
            o.Setup(m => m.SendConnectionsAsync(It.IsAny<IReadOnlyList<string>>(), It.IsAny<string>(), It.IsAny<object[]>()))
                .Callback<IReadOnlyList<string>, string, object[]>((connectionIds, methodName, args) => { resultArgs = args; })
                .Returns(Task.CompletedTask);

            var proxy = new MultipleClientProxy<FakeHub>(o.Object, new List<string>());

            var data = Encoding.UTF8.GetBytes("Hello world");
            await proxy.SendAsync("Method", data);

            Assert.NotNull(resultArgs);
            var arg = (byte[])Assert.Single(resultArgs);

            Assert.Same(data, arg);
        }
    }
}