using System.Security.Claims;
using Bunit;
using Microsoft.AspNetCore.Components.Authorization;
using Microsoft.Extensions.DependencyInjection;
using NSubstitute;
using ScadaLink.Commons.Entities.Notifications;
using ScadaLink.Commons.Interfaces.Repositories;
using SmtpConfigurationPage = ScadaLink.CentralUI.Components.Pages.Notifications.SmtpConfiguration;

namespace ScadaLink.CentralUI.Tests.Pages;

/// <summary>
/// bUnit rendering tests for the SMTP Configuration page — specifically the TlsMode
/// field added so the UI exposes all five user-relevant SmtpConfiguration fields.
/// </summary>
public class SmtpConfigurationPageTests : BunitContext
{
    private void WireAuth()
    {
        var claims = new[]
        {
            new Claim("Username", "tester"),
            new Claim(ClaimTypes.Role, "Admin"),
        };
        var user = new ClaimsPrincipal(new ClaimsIdentity(claims, "TestAuth"));
        Services.AddSingleton<AuthenticationStateProvider>(new TestAuthStateProvider(user));
        Services.AddAuthorizationCore();
    }

    private static SmtpConfiguration Sample() =>
        new("smtp.example.com", "Basic", "noreply@example.com")
        {
            Id = 1,
            Port = 587,
            TlsMode = "StartTLS",
            Credentials = "user:pass",
        };

    [Fact]
    public void EditForm_RendersTlsModeSelectWithAllThreeModes()
    {
        var repo = Substitute.For<INotificationRepository>();
        repo.GetAllSmtpConfigurationsAsync()
            .Returns(Task.FromResult<IReadOnlyList<SmtpConfiguration>>(
                new List<SmtpConfiguration> { Sample() }));
        Services.AddSingleton(repo);
        WireAuth();

        var cut = Render<SmtpConfigurationPage>();
        cut.WaitForState(() => cut.Markup.Contains("smtp.example.com"));

        cut.FindAll("button").First(b => b.TextContent.Contains("Edit")).Click();

        cut.WaitForAssertion(() =>
        {
            var selects = cut.FindAll("select");
            var tlsSelect = selects.Single(s => s.QuerySelectorAll("option")
                .Any(o => o.TextContent == "StartTLS"));
            var modes = tlsSelect.QuerySelectorAll("option").Select(o => o.TextContent).ToList();
            Assert.Equal(new[] { "None", "StartTLS", "SSL" }, modes);
        });
    }

    [Fact]
    public void ReadOnlyView_ShowsTlsMode()
    {
        var repo = Substitute.For<INotificationRepository>();
        repo.GetAllSmtpConfigurationsAsync()
            .Returns(Task.FromResult<IReadOnlyList<SmtpConfiguration>>(
                new List<SmtpConfiguration> { Sample() }));
        Services.AddSingleton(repo);
        WireAuth();

        var cut = Render<SmtpConfigurationPage>();

        cut.WaitForAssertion(() =>
        {
            Assert.Contains("TLS Mode", cut.Markup);
            Assert.Contains("StartTLS", cut.Markup);
        });
    }

    [Fact]
    public void SavingEdit_PersistsChosenTlsMode()
    {
        var config = Sample();
        var repo = Substitute.For<INotificationRepository>();
        repo.GetAllSmtpConfigurationsAsync()
            .Returns(Task.FromResult<IReadOnlyList<SmtpConfiguration>>(
                new List<SmtpConfiguration> { config }));
        Services.AddSingleton(repo);
        WireAuth();

        var cut = Render<SmtpConfigurationPage>();
        cut.WaitForState(() => cut.Markup.Contains("smtp.example.com"));

        cut.FindAll("button").First(b => b.TextContent.Contains("Edit")).Click();

        var tlsSelect = cut.FindAll("select")
            .Single(s => s.QuerySelectorAll("option").Any(o => o.TextContent == "StartTLS"));
        tlsSelect.Change("SSL");

        cut.FindAll("button").First(b => b.TextContent.Contains("Save")).Click();

        cut.WaitForAssertion(() =>
        {
            repo.Received().UpdateSmtpConfigurationAsync(
                Arg.Is<SmtpConfiguration>(c => c.TlsMode == "SSL"));
            repo.Received().SaveChangesAsync();
        });
    }
}