using System.Net;
using System.Net.Http.Json;
using System.Text.Json;
using Azaion.E2E.Helpers;
using FluentAssertions;
using Xunit;

namespace Azaion.E2E.Tests;

[Collection("E2E")]
public sealed class HardwareBindingTests
{
    private static readonly JsonSerializerOptions ResponseJsonOptions = new()
    {
        PropertyNameCaseInsensitive = true
    };

    private const string TestUserPassword = "TestPass1234";
    private const string SampleHardware =
        "CPU: TestCPU. GPU: TestGPU. Memory: 16384. DriveSerial: TESTDRIVE001.";

    private sealed record ErrorResponse(int ErrorCode, string Message);

    private readonly TestFixture _fixture;

    public HardwareBindingTests(TestFixture fixture) => _fixture = fixture;

    [Fact]
    public async Task First_hardware_check_binds_and_returns_200_true()
    {
        // Arrange
        string? email = null;

        try
        {
            var candidateEmail = $"hwtest-{Guid.NewGuid()}@azaion.com";
            using (var adminClient = _fixture.CreateAuthenticatedClient(_fixture.AdminToken))
            {
                using var createResp = await adminClient.PostAsync("/users",
                    new { Email = candidateEmail, Password = TestUserPassword, Role = 10 });
                createResp.EnsureSuccessStatusCode();
            }

            email = candidateEmail;

            using var loginClient = _fixture.CreateApiClient();
            var userToken = await loginClient.LoginAsync(email, TestUserPassword);

            using var userClient = _fixture.CreateAuthenticatedClient(userToken);

            // Act
            using var response = await userClient.PostAsync("/resources/check", new { Hardware = SampleHardware });

            // Assert
            response.StatusCode.Should().Be(HttpStatusCode.OK);
            var body = await response.Content.ReadFromJsonAsync<bool>(ResponseJsonOptions);
            body.Should().BeTrue();
        }
        finally
        {
            if (email is not null)
            {
                using var adminCleanup = _fixture.CreateAuthenticatedClient(_fixture.AdminToken);
                using var del = await adminCleanup.DeleteAsync($"/users/{Uri.EscapeDataString(email)}");
                del.EnsureSuccessStatusCode();
            }
        }
    }

    [Fact]
    public async Task Repeat_hardware_check_with_same_hardware_returns_200_true()
    {
        // Arrange
        string? email = null;

        try
        {
            var candidateEmail = $"hwtest-{Guid.NewGuid()}@azaion.com";
            using (var adminClient = _fixture.CreateAuthenticatedClient(_fixture.AdminToken))
            {
                using var createResp = await adminClient.PostAsync("/users",
                    new { Email = candidateEmail, Password = TestUserPassword, Role = 10 });
                createResp.EnsureSuccessStatusCode();
            }

            email = candidateEmail;

            using var loginClient = _fixture.CreateApiClient();
            var userToken = await loginClient.LoginAsync(email, TestUserPassword);

            using var userClient = _fixture.CreateAuthenticatedClient(userToken);
            using (var first = await userClient.PostAsync("/resources/check", new { Hardware = SampleHardware }))
            {
                first.EnsureSuccessStatusCode();
            }

            // Act
            using var response = await userClient.PostAsync("/resources/check", new { Hardware = SampleHardware });

            // Assert
            response.StatusCode.Should().Be(HttpStatusCode.OK);
            var body = await response.Content.ReadFromJsonAsync<bool>(ResponseJsonOptions);
            body.Should().BeTrue();
        }
        finally
        {
            if (email is not null)
            {
                using var adminCleanup = _fixture.CreateAuthenticatedClient(_fixture.AdminToken);
                using var del = await adminCleanup.DeleteAsync($"/users/{Uri.EscapeDataString(email)}");
                del.EnsureSuccessStatusCode();
            }
        }
    }

    [Fact]
    public async Task Hardware_mismatch_returns_409_with_error_code_40()
    {
        // Arrange
        const string hardwareA = "HARDWARE_A";
        const string hardwareB = "HARDWARE_B";
        string? email = null;

        try
        {
            var candidateEmail = $"hwtest-{Guid.NewGuid()}@azaion.com";
            using (var adminClient = _fixture.CreateAuthenticatedClient(_fixture.AdminToken))
            {
                using var createResp = await adminClient.PostAsync("/users",
                    new { Email = candidateEmail, Password = TestUserPassword, Role = 10 });
                createResp.EnsureSuccessStatusCode();
            }

            email = candidateEmail;

            using var loginClient = _fixture.CreateApiClient();
            var userToken = await loginClient.LoginAsync(email, TestUserPassword);

            using var userClient = _fixture.CreateAuthenticatedClient(userToken);
            using (var bind = await userClient.PostAsync("/resources/check", new { Hardware = hardwareA }))
            {
                bind.EnsureSuccessStatusCode();
            }

            // Act
            using var response = await userClient.PostAsync("/resources/check", new { Hardware = hardwareB });

            // Assert
            response.StatusCode.Should().Be(HttpStatusCode.Conflict);
            var err = await response.Content.ReadFromJsonAsync<ErrorResponse>(ResponseJsonOptions);
            err.Should().NotBeNull();
            err!.ErrorCode.Should().Be(40);
        }
        finally
        {
            if (email is not null)
            {
                using var adminCleanup = _fixture.CreateAuthenticatedClient(_fixture.AdminToken);
                using var del = await adminCleanup.DeleteAsync($"/users/{Uri.EscapeDataString(email)}");
                del.EnsureSuccessStatusCode();
            }
        }
    }
}