using Microsoft.AspNetCore.Components.Authorization;
using ZB.MOM.WW.ScadaBridge.CentralUI.Services;
using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Services;
using ZB.MOM.WW.ScadaBridge.Commons.Messages.Management;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.DependencyInjection;
using Microsoft.Extensions.Options;
using NSubstitute;
using ZB.MOM.WW.Auth.Abstractions.Roles;
using ZB.MOM.WW.ScadaBridge.CentralUI.Auth;
using ZB.MOM.WW.ScadaBridge.Security;

namespace ZB.MOM.WW.ScadaBridge.CentralUI.Tests.Auth;

public class CircuitRevocationRegressionTests
{
    /// <summary>Verifies that an explicit server auto-login does not remap the synthetic cookie principal.</summary>
    /// <returns>A task that represents the asynchronous operation.</returns>
    [Fact]
    public async Task ExplicitServerAutoLogin_DoesNotRemapSyntheticCookiePrincipal()
    {
        var initial = SessionClaimBuilder.Build("developer", "Developer", [],
            new RoleMappingResult(Roles.All, [], true), DateTimeOffset.UtcNow);
        var mapper = Substitute.For<IGroupRoleMapper<string>>();
        mapper.MapAsync(Arg.Any<IReadOnlyList<string>>(), Arg.Any<CancellationToken>())
            .Returns(new GroupRoleMapping<string>([], Scope: new RoleMappingResult([], [], false)));
        var services = new ServiceCollection().AddLogging();
        services.AddSingleton(mapper);
        services.AddSingleton<TimeProvider>(TimeProvider.System);
        services.AddSingleton(Options.Create(new SecurityOptions()));
        services.AddSingleton(Options.Create(new ZB.MOM.WW.ScadaBridge.Security.Auth.AuthDisableLoginOptions { DisableLogin = true }));
        services.AddScoped<CookieSessionValidator>();
        services.AddSingleton<IHttpContextAccessor>(new HttpContextAccessor { HttpContext = new DefaultHttpContext { User = initial } });
        services.AddScoped<AuthenticationStateProvider, CookieAuthenticationStateProvider>();
        using var provider = services.BuildServiceProvider();
        using var scope = provider.CreateScope();
        var auth = scope.ServiceProvider.GetRequiredService<AuthenticationStateProvider>();
        var state = await auth.GetAuthoritativeStateAsync();
        Assert.Contains(state.User.Claims, claim => claim.Type == JwtTokenService.RoleClaimType && claim.Value == Roles.Administrator);
        await mapper.DidNotReceive().MapAsync(Arg.Any<IReadOnlyList<string>>(), Arg.Any<CancellationToken>());
    }

    /// <summary>Verifies that the same circuit rechecks role mapping and site scope after a grant is revoked.</summary>
    /// <returns>A task that represents the asynchronous operation.</returns>
    [Fact]
    public async Task SameCircuit_RechecksMappingAndScope_AfterGrantRevocation()
    {
        var mapping = new RoleMappingResult([Roles.Deployer, Roles.Administrator], ["1"], false);
        var mapper = Substitute.For<IGroupRoleMapper<string>>();
        mapper.MapAsync(Arg.Any<IReadOnlyList<string>>(), Arg.Any<CancellationToken>())
            .Returns(_ => new GroupRoleMapping<string>(mapping.Roles, Scope: mapping));
        var initial = SessionClaimBuilder.Build("alice", "Alice", ["group"], mapping, DateTimeOffset.UtcNow);
        var services = new ServiceCollection().AddLogging();
        services.AddSingleton(mapper);
        var transaction = Substitute.For<IConfigurationCommandTransaction>();
        services.AddSingleton(transaction);
        services.AddScoped<ConfigurationCommandService>();
        services.AddSingleton<TimeProvider>(TimeProvider.System);
        services.AddSingleton(Options.Create(new SecurityOptions()));
        services.AddScoped<CookieSessionValidator>();
        services.AddSingleton<IHttpContextAccessor>(new HttpContextAccessor { HttpContext = new DefaultHttpContext { User = initial } });
        services.AddScoped<AuthenticationStateProvider, CookieAuthenticationStateProvider>();
        using var provider = services.BuildServiceProvider();
        using var scope = provider.CreateScope();
        var auth = scope.ServiceProvider.GetRequiredService<AuthenticationStateProvider>();
        var sites = new SiteScopeService(auth);
        Assert.True(await sites.IsSiteAllowedAsync(1));
        mapping = new RoleMappingResult([Roles.Viewer], ["2"], false);
        var refreshed = await auth.GetAuthenticationStateAsync();
        Assert.DoesNotContain(Roles.Deployer, refreshed.User.FindAll(JwtTokenService.RoleClaimType).Select(c => c.Value));
        Assert.False(await sites.IsSiteAllowedAsync(1));
        Assert.True(await sites.IsSiteAllowedAsync(2));
        // The already-created circuit facade must deny before starting any save transaction.
        var commands = scope.ServiceProvider.GetRequiredService<ConfigurationCommandService>();
        await Assert.ThrowsAsync<UnauthorizedAccessException>(() => commands.ExecuteAsync(new CreateRoleMappingCommand("blocked", Roles.Viewer)));
        await transaction.DidNotReceive().ExecuteAsync(Arg.Any<Func<IServiceProvider, Task<object?>>>());
    }
}