using System.Text.RegularExpressions;
using Microsoft.Playwright;
using Microsoft.Playwright.NUnit;
using Tests.PageObjects;

namespace Tests;

[Parallelizable(ParallelScope.Self)]
[TestFixture]
public class PasskeyTests : PageTest
{
    private const string BaseUrl = "http://localhost:5256";
    private LoginPage _loginPage = null!;

    [SetUp]
    public async Task SetUp()
    {
        _loginPage = new LoginPage(Page);
        // Clear any auth cookies and wipe all stored credentials for a clean slate
        await Page.Context.ClearCookiesAsync();
        using var http = new HttpClient();
        await http.DeleteAsync($"{BaseUrl}/api/auth/credentials");
    }

    [TearDown]
    public async Task TearDown()
    {
        using var http = new HttpClient();
        await http.DeleteAsync($"{BaseUrl}/api/auth/credentials");
        await Page.Context.ClearCookiesAsync();
    }

    [Test]
    public async Task LoginPage_WhenNoCredentials_ShowsEnrollButton()
    {
        await _loginPage.GotoAsync();
        await _loginPage.WaitForInteractiveAsync();

        await Expect(_loginPage.EnrollButton).ToBeVisibleAsync(new() { Timeout = 10_000 });
        await Expect(_loginPage.SignInButton).Not.ToBeVisibleAsync();
    }

    [Test]
    public async Task EnrollPasskey_CompletesSuccessfully_AndRedirectsHome()
    {
        var authenticatorId = await Page.Context.AddVirtualAuthenticatorAsync(new VirtualAuthenticatorOptions
        {
            Protocol = "ctap2",
            Transport = "internal",
            HasResidentKey = true,
            HasUserVerification = true,
            IsUserVerified = true,
        });

        try
        {
            await _loginPage.GotoAsync();
            await _loginPage.WaitForInteractiveAsync();

            await Expect(_loginPage.EnrollButton).ToBeVisibleAsync(new() { Timeout = 10_000 });
            await _loginPage.EnrollButton.ClickAsync();

            // After enrollment + auto sign-in, redirects away from /login
            await Page.WaitForURLAsync(new Regex(@"^http://localhost:5256(?!/login)"), new() { Timeout = 20_000 });
        }
        finally
        {
            await Page.Context.RemoveVirtualAuthenticatorAsync(authenticatorId);
        }
    }

    [Test]
    public async Task LoginPage_AfterEnrollment_ShowsSignInButton()
    {
        var authenticatorId = await Page.Context.AddVirtualAuthenticatorAsync(new VirtualAuthenticatorOptions
        {
            Protocol = "ctap2",
            Transport = "internal",
            HasResidentKey = true,
            HasUserVerification = true,
            IsUserVerified = true,
        });

        try
        {
            // Enroll first
            await _loginPage.GotoAsync();
            await _loginPage.WaitForInteractiveAsync();
            await _loginPage.EnrollButton.ClickAsync();
            await Page.WaitForURLAsync(new Regex(@"^http://localhost:5256(?!/login)"), new() { Timeout = 20_000 });

            // Clear the auth cookie and navigate back to /login
            await Page.Context.ClearCookiesAsync();
            await _loginPage.GotoAsync();
            await _loginPage.WaitForInteractiveAsync();

            // Should show Sign In button (credential is enrolled)
            await Expect(_loginPage.SignInButton).ToBeVisibleAsync(new() { Timeout = 10_000 });
        }
        finally
        {
            await Page.Context.RemoveVirtualAuthenticatorAsync(authenticatorId);
        }
    }

    [Test]
    public async Task SignInWithPasskey_AfterEnrollment_AuthenticatesSuccessfully()
    {
        var authenticatorId = await Page.Context.AddVirtualAuthenticatorAsync(new VirtualAuthenticatorOptions
        {
            Protocol = "ctap2",
            Transport = "internal",
            HasResidentKey = true,
            HasUserVerification = true,
            IsUserVerified = true,
        });

        try
        {
            // Enroll
            await _loginPage.GotoAsync();
            await _loginPage.WaitForInteractiveAsync();
            await _loginPage.EnrollButton.ClickAsync();
            await Page.WaitForURLAsync(new Regex(@"^http://localhost:5256(?!/login)"), new() { Timeout = 20_000 });

            // Sign out (clear cookie) and return to login
            await Page.Context.ClearCookiesAsync();
            await _loginPage.GotoAsync();
            await _loginPage.WaitForInteractiveAsync();

            await Expect(_loginPage.SignInButton).ToBeVisibleAsync(new() { Timeout = 10_000 });
            await _loginPage.SignInButton.ClickAsync();

            // After sign-in, redirects away from /login
            await Page.WaitForURLAsync(new Regex(@"^http://localhost:5256(?!/login)"), new() { Timeout = 20_000 });
        }
        finally
        {
            await Page.Context.RemoveVirtualAuthenticatorAsync(authenticatorId);
        }
    }
}