using System.Security.Claims;
using Bunit;
using Microsoft.AspNetCore.Components;
using Microsoft.AspNetCore.Components.Authorization;
using Microsoft.Extensions.DependencyInjection;
using NSubstitute;
using ScadaLink.Commons.Entities.ExternalSystems;
using ScadaLink.Commons.Interfaces.Repositories;
using ScadaLink.Security;
using ExternalSystemForm = ScadaLink.CentralUI.Components.Pages.Design.ExternalSystemForm;

namespace ScadaLink.CentralUI.Tests.Design;

/// <summary>
/// Bundle D drill-in test (#23 M7-T12) for the External Systems edit page.
/// The page-header chip routes operators into the central Audit Log
/// pre-filtered by Target = external-system name. Create mode has nothing
/// to drill into yet, so the link is suppressed.
/// </summary>
public class ExternalSystemFormAuditDrillinTests : BunitContext
{
    private readonly IExternalSystemRepository _repo = Substitute.For<IExternalSystemRepository>();

    public ExternalSystemFormAuditDrillinTests()
    {
        Services.AddSingleton(_repo);

        var claims = new[]
        {
            new Claim("Username", "tester"),
            new Claim(JwtTokenService.RoleClaimType, "Design"),
        };
        var user = new ClaimsPrincipal(new ClaimsIdentity(claims, "TestAuth"));
        Services.AddSingleton<AuthenticationStateProvider>(new TestAuthStateProvider(user));
        Services.AddAuthorizationCore();
        AuthorizationPolicies.AddScadaLinkAuthorization(Services);
    }

    [Fact]
    public void EditPage_HasRecentAuditActivityLink_WithTargetEqualToSystemName()
    {
        _repo.GetExternalSystemByIdAsync(7, Arg.Any<CancellationToken>())
            .Returns(new ExternalSystemDefinition("ERP-Alpha", "https://erp.example.test", "ApiKey")
            {
                Id = 7,
            });

        var cut = Render<ExternalSystemForm>(p => p.Add(c => c.Id, 7));

        cut.WaitForAssertion(() =>
        {
            var link = cut.Find("a[data-test=\"audit-link\"]");
            Assert.Equal("/audit/log?target=ERP-Alpha", link.GetAttribute("href"));
            Assert.Contains("Recent audit activity", link.TextContent);
        });
    }

    [Fact]
    public void CreatePage_HasNoRecentAuditActivityLink()
    {
        // Create mode (Id is null) — there's no real external system to drill into,
        // so the link must not render.
        var cut = Render<ExternalSystemForm>();

        cut.WaitForAssertion(() =>
        {
            Assert.Empty(cut.FindAll("a[data-test=\"audit-link\"]"));
        });
    }
}