using System;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Net.Http.Json;
using System.Threading.Tasks;
using AsbCloudApp.Data;
using AsbCloudApp.Services;
using Microsoft.Extensions.DependencyInjection;
using Xunit;

namespace AsbCloudWebApi.Tests.IntegrationTests.Controllers;

public abstract class CrudControllerTests<T, TRepository> : BaseIntegrationTest
	where T : class, IId
	where TRepository : ICrudRepository<T>
{
	private readonly TRepository repository;

	protected abstract string Uri { get; }

	protected abstract T GetFakerData();

	protected CrudControllerTests(TestWebApplicationFactory factory)
		: base(factory)
	{
		repository = scope.ServiceProvider.GetRequiredService<TRepository>();
	}
	
	[Fact]
	public virtual async Task InsertAsync_Should_ReturnsSuccess()
	{
		//arrange
		var fakerData = GetFakerData();

		var request = new HttpRequestMessage
		{
			Content = JsonContent.Create(fakerData),
			Method = HttpMethod.Post,
			RequestUri = new Uri(Uri, UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);
		var result = await response.Content.ReadFromJsonAsync<int>();

		//assert
		Assert.True(result > 0);
		Assert.True(response.IsSuccessStatusCode);
	}

	[Fact]
	public virtual async Task InsertRangeAsync_Should_ReturnsSuccess()
	{
		//arrange
		var fakerData = GetFakerData();

		var request = new HttpRequestMessage
		{
			Content = JsonContent.Create(new[] { fakerData }),
			Method = HttpMethod.Post,
			RequestUri = new Uri($"{Uri}/range", UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);
		var result = await response.Content.ReadFromJsonAsync<int>();

		//assert
		Assert.True(result > 0);
		Assert.True(response.IsSuccessStatusCode);
	}

	[Fact]
	public virtual async Task InsertRangeAsync_Should_ReturnsBadRequest_WhenInputCollectionFakerDataIsEmpty()
	{
		//arrange
		var request = new HttpRequestMessage
		{
			Content = JsonContent.Create(Enumerable.Empty<T>()),
			Method = HttpMethod.Post,
			RequestUri = new Uri($"{Uri}/range", UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);
		
		//assert
		Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
	}

	[Fact]
	public virtual async Task UpdateAsync_Should_ReturnsSuccess()
	{
		//arrange
		var fakerData = GetFakerData();
		fakerData.Id = await repository.InsertAsync(fakerData, default);

		var request = new HttpRequestMessage
		{
			Content = JsonContent.Create(fakerData),
			Method = HttpMethod.Put,
			RequestUri = new Uri(Uri, UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);
		var result = await response.Content.ReadFromJsonAsync<int>();

		//assert
		Assert.Equal(fakerData.Id, result);
		Assert.True(response.IsSuccessStatusCode);
	}

	[Fact]
	public virtual async Task UpdateAsync_Should_ReturnsBadRequest_WhenFakerDataHasInvalidId()
	{
		//arrange
		var fakerData = GetFakerData();

		var request = new HttpRequestMessage
		{
			Content = JsonContent.Create(fakerData),
			Method = HttpMethod.Put,
			RequestUri = new Uri(Uri, UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);

		//assert
		Assert.Equal(HttpStatusCode.BadRequest, response.StatusCode);
	}

	[Fact]
	public virtual async Task DeleteAsync_Should_ReturnsSuccess()
	{
		//arrange
		var fakerData = GetFakerData();
		fakerData.Id = await repository.InsertAsync(fakerData, default);

		var request = new HttpRequestMessage
		{
			Method = HttpMethod.Delete,
			RequestUri = new Uri($"{Uri}/{fakerData.Id}", UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);
		var result = await response.Content.ReadFromJsonAsync<int>();

		//assert
		Assert.True(result > 0);
		Assert.True(response.IsSuccessStatusCode);
	}

	[Fact]
	public virtual async Task DeleteAsync_Should_ReturnsNoContent_WhenFakerDataHasInvalidId()
	{
		//arrange
		const int fakerInvalidId = 0;

		var request = new HttpRequestMessage
		{
			Method = HttpMethod.Delete,
			RequestUri = new Uri($"{Uri}/{fakerInvalidId}", UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);

		//assert
		Assert.Equal(HttpStatusCode.NoContent, response.StatusCode);
	}

	[Fact]
	public virtual async Task GetOrDefaultAsync_Should_ReturnsSuccess()
	{
		//arrange
		var fakerData = GetFakerData();
		fakerData.Id = await repository.InsertAsync(fakerData, default);

		var request = new HttpRequestMessage
		{
			Method = HttpMethod.Get,
			RequestUri = new Uri($"{Uri}/{fakerData.Id}", UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);
		var result = await response.Content.ReadFromJsonAsync<T>();

		//assert
		Assert.NotNull(result);
		Assert.Equal(fakerData.Id, result.Id);
		Assert.True(response.IsSuccessStatusCode);
	}

	[Fact]
	public virtual async Task GetOrDefaultAsync_Should_ReturnsNoContent_WhenFakerDataHasInvalidId()
	{
		//arrange
		const int fakerInvalidId = 0;

		var request = new HttpRequestMessage
		{
			Method = HttpMethod.Get,
			RequestUri = new Uri($"{Uri}/{fakerInvalidId}", UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);

		//assert
		Assert.Equal(HttpStatusCode.NoContent, response.StatusCode);
	}

	[Fact]
	public virtual async Task GetAllAsync_Should_ReturnsSuccess()
	{
		//arrange
		var existingFakerDataIds = (await repository.GetAllAsync(default)).Select(f => f.Id);

		foreach (var existingFakerDataId in existingFakerDataIds)
			await repository.DeleteAsync(existingFakerDataId, default);

		var fakerData = GetFakerData();
		fakerData.Id = await repository.InsertAsync(fakerData, default);

		var request = new HttpRequestMessage
		{
			Method = HttpMethod.Get,
			RequestUri = new Uri(Uri, UriKind.Relative)
		};

		var user = await RegisterUserAsync();
		SetToken(user.Token);

		//act
		var response = await httpClient.SendAsync(request);
		var result = await response.Content.ReadFromJsonAsync<T[]>();

		//assert
		Assert.NotNull(result);
		Assert.Single(result);
		Assert.True(response.IsSuccessStatusCode);
	}
}