TourIAm/TIAM.Database/DbSets/Users/AssignedUserDbSetExtensions.cs

using TIAM.Database.DbContexts.ServiceProviders;
using TIAM.Entities.Users;

namespace TIAM.Database.DbSets.Users;

public static class AssignedUserDbSetExtensions
{
    public static IQueryable<AssignedUser> GetAssignedUsersByPermissionGroupId(this ServiceProviderDbContext ctx, Guid permissionGroupId)
    {
        return ctx.AssignedUsers
            .Where(user => ctx.PermissionGroupUserMappings
                .Where(x => x.PermissionGroupId == permissionGroupId)
                .Select(x => x.AssignedUserId)
                .Contains(user.Id));
    }

    public static AssignedUser? GetAssignedUserById(this IAssignedUserDbSet ctx, Guid assignedUserId)
        => ctx.AssignedUsers.FirstOrDefault(x => x.Id == assignedUserId);

    public static IQueryable<AssignedUser> GetAssignedUsersByContextId(this IAssignedUserDbSet ctx, Guid contextId)
        => ctx.AssignedUsers.Where(x => x.ContextId == contextId);
}