using Microsoft.Extensions.DependencyInjection;
using NSubstitute;
using ZB.MOM.WW.ScadaBridge.Commons.Entities.Notifications;
using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Repositories;
using ZB.MOM.WW.ScadaBridge.Commons.Interfaces.Services;
using ZB.MOM.WW.ScadaBridge.Commons.Messages.Management;
using ZB.MOM.WW.ScadaBridge.Commons.Types.Enums;
using ZB.MOM.WW.ScadaBridge.Security;

namespace ZB.MOM.WW.ScadaBridge.ManagementService.Tests;

public class NotificationRecipientPreservationTests
{
    [Theory]
    [InlineData(NotificationType.Email)]
    [InlineData(NotificationType.Sms)]
    public async Task DedicatedEdits_PreserveUnrelatedRecipientIdentityAndName(NotificationType channel)
    {
        var list = new NotificationList("Original") { Id = 7, Type = channel };
        var original = channel == NotificationType.Email
            ? NotificationRecipient.ForEmail("Existing Operator", "original@example.com")
            : NotificationRecipient.ForSms("Existing Operator", "+15551234567");
        original.Id = 41;
        original.NotificationListId = list.Id;
        list.Recipients.Add(original);
        var originalEmail = original.EmailAddress;
        var originalPhone = original.PhoneNumber;
        var repo = Substitute.For<INotificationRepository>();
        repo.GetNotificationListByIdAsync(7, Arg.Any<CancellationToken>()).Returns(list);
        repo.GetRecipientsByListIdAsync(7, Arg.Any<CancellationToken>())
            .Returns(_ => list.Recipients.ToList());
        repo.GetRecipientByIdAsync(Arg.Any<int>(), Arg.Any<CancellationToken>())
            .Returns(call => list.Recipients.SingleOrDefault(r => r.Id == call.Arg<int>()));
        // Model repository inserts/deletes in one persisted collection. Any accidental
        // whole-list replacement would remove or renumber the original row and fail below.
        repo.When(r => r.AddRecipientAsync(Arg.Any<NotificationRecipient>(), Arg.Any<CancellationToken>()))
            .Do(call =>
            {
                var row = call.Arg<NotificationRecipient>();
                row.Id = 42;
                list.Recipients.Add(row);
            });
        repo.When(r => r.DeleteRecipientAsync(Arg.Any<int>(), Arg.Any<CancellationToken>()))
            .Do(call => list.Recipients.Remove(list.Recipients.Single(r => r.Id == call.Arg<int>())));
        using var services = new ServiceCollection().AddTestConfigurationTransaction()
            .AddSingleton(repo).AddSingleton(Substitute.For<IAuditService>()).BuildServiceProvider();
        var user = new AuthenticatedUser("designer", "designer", new[] { Roles.Designer }, Array.Empty<string>());

        await ManagementActor.ExecuteConfigurationCommandAsync(services,
            new RenameNotificationListCommand(7, "Renamed"), user);
        Assert.Equal("Renamed", list.Name);
        AssertOriginalUnchanged();
        Assert.Single(list.Recipients);
        await repo.DidNotReceiveWithAnyArgs().AddRecipientAsync(default!, default);
        await repo.DidNotReceiveWithAnyArgs().DeleteRecipientAsync(default, default);

        await ManagementActor.ExecuteConfigurationCommandAsync(services,
            new AddNotificationRecipientCommand(7, "New Operator",
                channel == NotificationType.Email ? "new@example.com" : null,
                channel == NotificationType.Sms ? "+15557654321" : null), user);
        AssertOriginalUnchanged();
        Assert.Equal(2, list.Recipients.Count);
        var added = Assert.Single(list.Recipients, r => r.Id != original.Id);
        Assert.Equal(42, added.Id);
        Assert.Equal("New Operator", added.Name);
        Assert.Equal(7, added.NotificationListId);
        await repo.DidNotReceiveWithAnyArgs().DeleteRecipientAsync(default, default);

        await ManagementActor.ExecuteConfigurationCommandAsync(services,
            new DeleteNotificationRecipientCommand(42), user);
        AssertOriginalUnchanged();
        Assert.Single(list.Recipients);
        await repo.Received(1).AddRecipientAsync(Arg.Any<NotificationRecipient>(), Arg.Any<CancellationToken>());
        await repo.Received(1).DeleteRecipientAsync(42, Arg.Any<CancellationToken>());
        await repo.DidNotReceive().DeleteRecipientAsync(41, Arg.Any<CancellationToken>());
        await repo.DidNotReceiveWithAnyArgs().UpdateRecipientAsync(default!, default);
        await repo.Received(3).SaveChangesAsync(Arg.Any<CancellationToken>());

        void AssertOriginalUnchanged()
        {
            var retained = Assert.Single(list.Recipients, r => r.Id == 41);
            Assert.Same(original, retained);
            Assert.Equal("Existing Operator", retained.Name);
            Assert.Equal(7, retained.NotificationListId);
            Assert.Equal(originalEmail, retained.EmailAddress);
            Assert.Equal(originalPhone, retained.PhoneNumber);
        }
    }
}