using System.Net;
using System.Net.Http.Json;
using PnvPanel.IntegrationTests.TestSupport;
using Xunit;

namespace PnvPanel.IntegrationTests.Auth;

[Collection(IntegrationTestCollection.Name)]
public class AuthFlowTests(PnvPanelWebApplicationFactory factory)
{
    private sealed record RegisterResponse(Guid Id, string UserName);

    private sealed record CurrentUserResponse(Guid Id, string UserName, string Role, bool IsActivated, bool TelegramLinked);

    private sealed record LoginResponse(string AccessToken, DateTimeOffset ExpiresAt, CurrentUserResponse User);

    [Fact]
    public async Task RegisterLoginMeRefreshLogout_FullFlow_Succeeds()
    {
        using var client = factory.CreateClient();
        var userName = $"alice_{Guid.NewGuid():N}"[..20];
        const string password = "P@ssw0rd123";

        var registerResponse = await client.PostJsonAsync("/api/auth/register", new { userName, password });
        Assert.Equal(HttpStatusCode.OK, registerResponse.StatusCode);
        var registered = await registerResponse.ReadAsAsync<RegisterResponse>();
        Assert.NotNull(registered);
        Assert.Equal(userName, registered!.UserName);

        var loginResponse = await client.PostJsonAsync("/api/auth/login", new { userName, password });
        Assert.Equal(HttpStatusCode.OK, loginResponse.StatusCode);
        var login = await loginResponse.ReadAsAsync<LoginResponse>();
        Assert.NotNull(login);
        Assert.False(login!.User.IsActivated);
        Assert.False(login.User.TelegramLinked);
        Assert.Equal("user", login.User.Role);

        client.UseBearerToken(login.AccessToken);
        var meResponse = await client.GetAsync("/api/auth/me");
        Assert.Equal(HttpStatusCode.OK, meResponse.StatusCode);
        var me = await meResponse.ReadAsAsync<CurrentUserResponse>();
        Assert.Equal(userName, me!.UserName);

        var refreshResponse = await client.PostAsync("/api/auth/refresh", content: null);
        Assert.Equal(HttpStatusCode.OK, refreshResponse.StatusCode);
        var refreshed = await refreshResponse.ReadAsAsync<LoginResponse>();
        Assert.NotNull(refreshed);
        Assert.NotEqual(login.AccessToken, refreshed!.AccessToken);

        var logoutResponse = await client.PostAsync("/api/auth/logout", content: null);
        Assert.Equal(HttpStatusCode.NoContent, logoutResponse.StatusCode);

        // Использованный refresh-токен отозван при logout — повторный refresh должен провалиться.
        var refreshAfterLogout = await client.PostAsync("/api/auth/refresh", content: null);
        Assert.Equal(HttpStatusCode.Unauthorized, refreshAfterLogout.StatusCode);
    }

    [Fact]
    public async Task Login_WithWrongPassword_ReturnsUnauthorized()
    {
        using var client = factory.CreateClient();
        var userName = $"bob_{Guid.NewGuid():N}"[..20];

        await client.PostJsonAsync("/api/auth/register", new { userName, password = "CorrectPassword123" });

        var loginResponse = await client.PostJsonAsync("/api/auth/login", new { userName, password = "WrongPassword123" });

        Assert.Equal(HttpStatusCode.Unauthorized, loginResponse.StatusCode);
    }

    [Fact]
    public async Task Register_WithDuplicateUserName_ReturnsConflict()
    {
        using var client = factory.CreateClient();
        var userName = $"carol_{Guid.NewGuid():N}"[..20];

        var first = await client.PostJsonAsync("/api/auth/register", new { userName, password = "P@ssw0rd123" });
        Assert.Equal(HttpStatusCode.OK, first.StatusCode);

        var second = await client.PostJsonAsync("/api/auth/register", new { userName, password = "AnotherPass123!" });

        Assert.Equal(HttpStatusCode.Conflict, second.StatusCode);
    }
}