using System;
using System.Net.Http;
using System.Threading.Tasks;
using FluentAssertions;
using Website.Data;
using Website.Models;
using Xunit;

namespace Website.Tests.Data {
	public class BlogApiTests {
		[Fact]
		public async Task GetPostByUrlAsync_WithUrl_ReturnsBlogPost() {
			const string json = @"{""id"":1,""title"":""title"",""content"":""content"",""timestamp"":""2020-04-10T13:00:42"",""draft"":""draft"",""url"":""url"",""userId"":0}";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Get)
			                 .WithUrl("/get/test")
			                 .WithResponse(json)
			                 .Build();

			var expectation = new BlogPost {
				Id = 1,
				Title = "title",
				Content = "content",
				Draft = "draft",
				Timestamp = new DateTime(2020, 04, 10, 13, 00, 42),
				Url = "url",
				UserId = 0
			};

			var api = new BlogApi(httpClient);
			(await api.GetPostByUrlAsync("test")).Should().BeEquivalentTo(expectation);
		}

		[Fact]
		public async Task GetLatestPostsAsync_WithNoParameters_ReturnsBlogPostCollection() {
			const string json = @"[{""id"":1,""title"":""title"",""content"":""content"",""timestamp"":""2020-04-10T13:00:42"",""draft"":""draft"",""url"":""url"",""userId"":0}]";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Get)
			                 .WithUrl("/getlatestposts")
			                 .WithResponse(json)
			                 .Build();

			var expectation = new[] {
				new BlogPost {
					Id = 1,
					Title = "title",
					Content = "content",
					Draft = "draft",
					Timestamp = new DateTime(2020, 04, 10, 13, 00, 42),
					Url = "url",
					UserId = 0
				}
			};

			var api = new BlogApi(httpClient);
			(await api.GetLatestPostsAsync()).Should().BeEquivalentTo(expectation);
		}

		[Fact]
		public async Task GetLatestPostsAsync_WithCount_ReturnsBlogPostCollection() {
			const string json = @"[{""id"":1,""title"":""title"",""content"":""content"",""timestamp"":""2020-04-10T13:00:42"",""draft"":""draft"",""url"":""url"",""userId"":0}]";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Get)
			                 .WithUrl("/getlatestposts?count=1")
			                 .WithResponse(json)
			                 .Build();

			var expectation = new[] {
				new BlogPost {
					Id = 1,
					Title = "title",
					Content = "content",
					Draft = "draft",
					Timestamp = new DateTime(2020, 04, 10, 13, 00, 42),
					Url = "url",
					UserId = 0
				}
			};

			var api = new BlogApi(httpClient);
			(await api.GetLatestPostsAsync(1)).Should().BeEquivalentTo(expectation);
		}

		[Fact]
		public async Task GetLatestPostsAsync_WithCountAndOffset_ReturnsBlogPostCollection() {
			const string json = @"[{""id"":1,""title"":""title"",""content"":""content"",""timestamp"":""2020-04-10T13:00:42"",""draft"":""draft"",""url"":""url"",""userId"":0}]";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Get)
			                 .WithUrl("/getlatestposts")
			                 .WithQueryString("count", "1")
			                 .WithQueryString("offset", "1")
			                 .WithResponse(json)
			                 .Build();

			var expectation = new[] {
				new BlogPost {
					Id = 1,
					Title = "title",
					Content = "content",
					Draft = "draft",
					Timestamp = new DateTime(2020, 04, 10, 13, 00, 42),
					Url = "url",
					UserId = 0
				}
			};

			var api = new BlogApi(httpClient);
			(await api.GetLatestPostsAsync(1, 1)).Should().BeEquivalentTo(expectation);
		}

		[Fact]
		public async Task GetLatestPostAsync_ReturnsBlogPost() {
			const string json = @"{""id"":1,""title"":""title"",""content"":""content"",""timestamp"":""2020-04-10T13:00:42"",""draft"":""draft"",""url"":""url"",""userId"":0}";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Get)
			                 .WithUrl("/getlatestpost")
			                 .WithResponse(json)
			                 .Build();

			var expectation = new BlogPost {
				Id = 1,
				Title = "title",
				Content = "content",
				Draft = "draft",
				Timestamp = new DateTime(2020, 04, 10, 13, 00, 42),
				Url = "url",
				UserId = 0
			};

			var api = new BlogApi(httpClient);
			(await api.GetLatestPostAsync()).Should().BeEquivalentTo(expectation);
		}

		[Fact]
		public async Task GetCountAsync_ReturnsCount() {
			const string json = @"23";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Get)
			                 .WithUrl("/getcount")
			                 .WithResponse(json)
			                 .Build();

			var api = new BlogApi(httpClient);
			(await api.GetCountAsync()).Should().Be(23);
		}

		[Fact]
		public async Task GetPostByIdAsync_WithUrl_ReturnsBlogPost() {
			const string json = @"{""id"":1,""title"":""title"",""content"":""content"",""timestamp"":""2020-04-10T13:00:42"",""draft"":""draft"",""url"":""url"",""userId"":0}";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Get)
			                 .WithUrl("/get/1")
			                 .WithResponse(json)
			                 .Build();

			var expectation = new BlogPost {
				Id = 1,
				Title = "title",
				Content = "content",
				Draft = "draft",
				Timestamp = new DateTime(2020, 04, 10, 13, 00, 42),
				Url = "url",
				UserId = 0
			};

			var api = new BlogApi(httpClient);
			(await api.GetPostByIdAsync(1)).Should().BeEquivalentTo(expectation);
		}

		[Fact]
		public async Task SavePost_WithPost_ReturnsNothing() {
			const string requestJson = @"{""Id"":1,""Title"":""title"",""Content"":""content""}";
			const string responseJson = @"{""id"":1,""title"":""title"",""content"":""content"",""timestamp"":""2020-04-10T13:00:42"",""draft"":""draft"",""url"":""url"",""userId"":0}";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Post)
			                 .WithUrl("/savepost")
			                 .WithPostBody(requestJson)
			                 .WithResponse(responseJson)
			                 .Build();

			var post = new BlogPostSubmission {Id = 1, Title = "title", Content = "content"};

			var expectation = new BlogPost {
				Id = 1,
				Title = "title",
				Content = "content",
				Draft = "draft",
				Timestamp = new DateTime(2020, 04, 10, 13, 00, 42),
				Url = "url",
				UserId = 0
			};

			var api = new BlogApi(httpClient);
			(await api.SavePost(post)).Should().BeEquivalentTo(expectation);
		}

		[Fact]
		public async Task GetAllPostsAsync_ReturnsBlogPostCollection() {
			const string json =
				@"[{""id"":1,""title"":""title"",""content"":""content"",""timestamp"":""2020-04-10T13:00:42"",""draft"":""draft"",""url"":""url"",""userId"":0}]";
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Get)
			                 .WithUrl("/getallposts")
			                 .WithResponse(json)
			                 .Build();

			var expectation = new[] {
				new BlogPost {
					Id = 1,
					Title = "title",
					Content = "content",
					Draft = "draft",
					Timestamp = new DateTime(2020, 04, 10, 13, 00, 42),
					Url = "url",
					UserId = 0
				}
			};

			var api = new BlogApi(httpClient);
			(await api.GetAllPostsAsync()).Should().BeEquivalentTo(expectation);
		}

		[Fact]
		public async Task DeletePost_WithId_ReturnsNothing() {
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Post)
			                 .WithUrl("/deletepost")
			                 .WithPostBody("1")
			                 .Build(out var mockHttpMessageHandler);

			var api = new BlogApi(httpClient);
			await api.DeletePostAsync(1);
			mockHttpMessageHandler.VerifyNoOutstandingExpectation();
		}

		[Fact]
		public async Task PublishPost_WithId_ReturnsNothing() {
			var httpClient = new HttpClientBuilder()
			                 .WithMethod(HttpMethod.Post)
			                 .WithUrl("/publishpost")
			                 .WithPostBody("1")
			                 .Build(out var mockHttpMessageHandler);

			var api = new BlogApi(httpClient);
			await api.PublishPostAsync(1);
			mockHttpMessageHandler.VerifyNoOutstandingExpectation();
		}
	}
}