using NSubstitute;
using Octokit.Reactive.Clients;
using Octokit.Tests.Helpers;
using System;
using System.Collections.Generic;
using System.Reactive.Linq;
using System.Threading.Tasks;
using Xunit;

namespace Octokit.Tests.Reactive
{
    public class ObservableDeploymentStatusClientTests
    {
        public class TheGetAllMethod
        {
            readonly IGitHubClient _githubClient;
            readonly ObservableDeploymentStatusClient _client;

            public TheGetAllMethod()
            {
                _githubClient = new GitHubClient(Substitute.For<IConnection>());
                _client = new ObservableDeploymentStatusClient(_githubClient);
            }

            [Fact]
            public void RequestsCorrectUrl()
            {
                var expectedUri = string.Format("repos/{0}/{1}/deployments/{2}/statuses", "owner", "repo", 1);

                _client.GetAll("owner", "repo", 1);

                _githubClient.Connection.Received(1)
                    .Get<List<DeploymentStatus>>(Arg.Is<Uri>(uri => uri.ToString() == expectedUri), Args.EmptyDictionary);
            }

            [Fact]
            public void RequestsCorrectUrlWithRepositoryId()
            {
                var expectedUri = string.Format("repositories/{0}/deployments/{1}/statuses", 1, 1);

                _client.GetAll(1, 1);

                _githubClient.Connection.Received(1)
                    .Get<List<DeploymentStatus>>(Arg.Is<Uri>(uri => uri.ToString() == expectedUri), Args.EmptyDictionary);
            }

            [Fact]
            public void RequestsCorrectUrlWithApiOptions()
            {
                var expectedUri = string.Format("repos/{0}/{1}/deployments/{2}/statuses", "owner", "repo", 1);

                var options = new ApiOptions
                {
                    StartPage = 1,
                    PageCount = 1,
                    PageSize = 1
                };

                _client.GetAll("owner", "repo", 1, options);

                _githubClient.Connection.Received(1)
                    .Get<List<DeploymentStatus>>(Arg.Is<Uri>(uri => uri.ToString() == expectedUri), Arg.Is<Dictionary<string, string>>(dictionary => dictionary.Count == 2));
            }

            [Fact]
            public void RequestsCorrectUrlWithRepositoryIdWithApiOptions()
            {
                var expectedUri = string.Format("repositories/{0}/deployments/{1}/statuses", 1, 1);

                var options = new ApiOptions
                {
                    StartPage = 1,
                    PageCount = 1,
                    PageSize = 1
                };

                _client.GetAll(1, 1, options);

                _githubClient.Connection.Received(1)
                    .Get<List<DeploymentStatus>>(Arg.Is<Uri>(uri => uri.ToString() == expectedUri), Arg.Is<Dictionary<string, string>>(dictionary => dictionary.Count == 2));
            }

            [Fact]
            public void EnsuresNonNullArguments()
            {
                Assert.Throws<ArgumentNullException>(() => _client.GetAll(null, "repo", 1));
                Assert.Throws<ArgumentNullException>(() => _client.GetAll("owner", null, 1));
                Assert.Throws<ArgumentNullException>(() => _client.GetAll(null, "repo", 1, ApiOptions.None));
                Assert.Throws<ArgumentNullException>(() => _client.GetAll("owner", null, 1, ApiOptions.None));
                Assert.Throws<ArgumentNullException>(() => _client.GetAll("owner", "repo", 1, null));

                Assert.Throws<ArgumentNullException>(() => _client.GetAll(1, 1, null));

                Assert.Throws<ArgumentException>(() => _client.GetAll("", "repo", 1));
                Assert.Throws<ArgumentException>(() => _client.GetAll("owner", "", 1));
                Assert.Throws<ArgumentException>(() => _client.GetAll("", "repo", 1, ApiOptions.None));
                Assert.Throws<ArgumentException>(() => _client.GetAll("owner", "", 1, ApiOptions.None));
            }

            [Fact]
            public async Task EnsureNonWhitespaceArguments()
            {
                await AssertEx.ThrowsWhenGivenWhitespaceArgument(
                    async whitespace => await _client.GetAll(whitespace, "repo", 1));
                await AssertEx.ThrowsWhenGivenWhitespaceArgument(
                    async whitespace => await _client.GetAll("owner", whitespace, 1));

                await AssertEx.ThrowsWhenGivenWhitespaceArgument(
                    async whitespace => await _client.GetAll(whitespace, "repo", 1, ApiOptions.None));
                await AssertEx.ThrowsWhenGivenWhitespaceArgument(
                    async whitespace => await _client.GetAll("owner", whitespace, 1, ApiOptions.None));
            }
        }

        public class TheCreateMethod
        {
            readonly IGitHubClient _githubClient = Substitute.For<IGitHubClient>();
            ObservableDeploymentStatusClient _client;

            private void SetupWithoutNonReactiveClient()
            {
                _client = new ObservableDeploymentStatusClient(_githubClient);
            }

            private void SetupWithNonReactiveClient()
            {
                var deploymentStatusClient = new DeploymentStatusClient(Substitute.For<IApiConnection>());
                _githubClient.Repository.Deployment.Status.Returns(deploymentStatusClient);
                _client = new ObservableDeploymentStatusClient(_githubClient);
            }

            [Fact]
            public void CallsIntoDeploymentStatusClient()
            {
                SetupWithoutNonReactiveClient();

                var newStatus = new NewDeploymentStatus(DeploymentState.Success);

                _client.Create("owner", "repo", 1, newStatus);

                _githubClient.Repository.Deployment.Status.Received(1)
                    .Create("owner", "repo", 1, newStatus);
            }

            [Fact]
            public void CallsIntoDeploymentStatusClientWithRepositoryId()
            {
                SetupWithoutNonReactiveClient();

                var newStatus = new NewDeploymentStatus(DeploymentState.Success);

                _client.Create(1, 1, newStatus);

                _githubClient.Repository.Deployment.Status.Received(1)
                    .Create(1, 1, newStatus);
            }

            [Fact]
            public async Task EnsuresNonNullArguments()
            {
                SetupWithNonReactiveClient();

                Assert.Throws<ArgumentNullException>(() => _client.Create(null, "repo", 1, new NewDeploymentStatus(DeploymentState.Success)));
                Assert.Throws<ArgumentNullException>(() => _client.Create("owner", null, 1, new NewDeploymentStatus(DeploymentState.Success)));
                Assert.Throws<ArgumentNullException>(() => _client.Create("owner", "repo", 1, null));

                Assert.Throws<ArgumentNullException>(() => _client.Create(1, 1, null));

                Assert.Throws<ArgumentException>(() => _client.Create("", "repo", 1, new NewDeploymentStatus(DeploymentState.Success)));
                Assert.Throws<ArgumentException>(() => _client.Create("owner", "", 1, new NewDeploymentStatus(DeploymentState.Success)));
            }

            [Fact]
            public async Task EnsureNonWhitespaceArguments()
            {
                SetupWithNonReactiveClient();

                await AssertEx.ThrowsWhenGivenWhitespaceArgument(
                    async whitespace => await _client.Create(whitespace, "repo", 1, new NewDeploymentStatus(DeploymentState.Success)));
                await AssertEx.ThrowsWhenGivenWhitespaceArgument(
                    async whitespace => await _client.Create("owner", whitespace, 1, new NewDeploymentStatus(DeploymentState.Success)));
            }
        }

        public class TheCtor
        {
            [Fact]
            public void EnsuresNonNullArguments()
            {
                Assert.Throws<ArgumentNullException>(
                    () => new ObservableDeploymentStatusClient(null));
            }
        }
    }
}
