using NSubstitute;
using PnvPanel.Application.Auth;
using PnvPanel.Application.Auth.Me;
using PnvPanel.Application.Common.Interfaces;
using PnvPanel.Application.Common.Models;
using PnvPanel.Application.Tests.TestSupport;
using Xunit;

namespace PnvPanel.Application.Tests.Auth;

public class GetCurrentUserQueryHandlerTests
{
    private readonly IIdentityService _identityService = Substitute.For<IIdentityService>();

    [Fact]
    public async Task Handle_Unauthenticated_ReturnsUnauthorized()
    {
        var handler = new GetCurrentUserQueryHandler(_identityService, FakeCurrentUser.Anonymous());

        var result = await handler.Handle(new GetCurrentUserQuery(), CancellationToken.None);

        Assert.False(result.IsSuccess);
        Assert.Equal(AuthErrors.Unauthorized, result.Error);
    }

    [Fact]
    public async Task Handle_ProfileMissing_ReturnsUnauthorized()
    {
        var userId = Guid.NewGuid();
        _identityService
            .GetProfileAsync(userId, Arg.Any<CancellationToken>())
            .Returns((CurrentUserProfile?)null);

        var handler = new GetCurrentUserQueryHandler(
            _identityService,
            FakeCurrentUser.Authenticated(userId)
        );

        var result = await handler.Handle(new GetCurrentUserQuery(), CancellationToken.None);

        Assert.False(result.IsSuccess);
        Assert.Equal(AuthErrors.Unauthorized, result.Error);
    }

    [Fact]
    public async Task Handle_AuthenticatedWithProfile_ReturnsCurrentUserDto()
    {
        var userId = Guid.NewGuid();
        var profile = new CurrentUserProfile(
            userId,
            "alice",
            Guid.NewGuid(),
            "user",
            true,
            false,
            3,
            RoleQuota.Unlimited,
            "sub-token",
            false,
            null,
            false
        );
        _identityService.GetProfileAsync(userId, Arg.Any<CancellationToken>()).Returns(profile);
        _identityService
            .GetTelegramLinkInfoAsync(userId, Arg.Any<CancellationToken>())
            .Returns(new TelegramLinkInfo(true, 42, "alice_tg"));

        var handler = new GetCurrentUserQueryHandler(
            _identityService,
            FakeCurrentUser.Authenticated(userId, "alice")
        );

        var result = await handler.Handle(new GetCurrentUserQuery(), CancellationToken.None);

        Assert.True(result.IsSuccess);
        Assert.Equal(userId, result.Value.Id);
        Assert.Equal("alice", result.Value.UserName);
        Assert.Equal("user", result.Value.Role);
        Assert.True(result.Value.IsActivated);
        Assert.True(result.Value.TelegramLinked);
    }
}