fix s.

PSManagement.Domain/Customers/DomainErrors/CustomerErrors.cs

-using PSManagement.SharedKernel.DomainErrors;
+using ErrorOr;
+using PSManagement.SharedKernel.DomainErrors;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,6 +10,6 @@ namespace PSManagement.Domain.Customers.DomainErrors
 {
     public static class CustomerErrors 
     {
-        public static DomainError InvalidEntryError { get;  } = new DomainError("Invalid Customer Entry.",new DomainError("Invalid Customer Data"));  
+        public static DomainError InvalidEntryError { get;  } = new ("Customer.InvalidEntry.","Invalid Customer Data");  
     }
 }

PSManagement.Domain/Customers/Aggregate/Customer.cs → PSManagement.Domain/Customers/Entities/Customer.cs

 using PSManagement.Domain.Customers.DomainEvents;
-using PSManagement.Domain.Customers.Entities;
 using PSManagement.Domain.Customers.ValueObjects;
 using PSManagement.Domain.Projects.Entities;
 using PSManagement.SharedKernel.Aggregate;
@@ -8,13 +7,13 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Linq.Expressions;
 
-namespace PSManagement.Domain.Customers.Aggregate
+namespace PSManagement.Domain.Customers.Entities
 {
     public class Customer : IAggregateRoot
     {
-        public String CustomerName { get; set; }
+        public string CustomerName { get; set; }
         public Address Address { get; set; }
-        public String Email { get; set; }
+        public string Email { get; set; }
         public ICollection<ContactInfo> ContactInfo { get; private set; }
         public ICollection<Project> Projects { get; private set; }
 
@@ -23,7 +22,7 @@ namespace PSManagement.Domain.Customers.Aggregate
 
         }
 
-        public Customer(String customerName, Address address, string email)
+        public Customer(string customerName, Address address, string email)
         {
             CustomerName = customerName;
             Address = address;
@@ -32,7 +31,7 @@ namespace PSManagement.Domain.Customers.Aggregate
 
         public void AddContactInfo(ContactInfo contactInfo)
         {
-            if(ContactInfo is null)
+            if (ContactInfo is null)
             {
                 ContactInfo = new List<ContactInfo>();
             }

PSManagement.Domain/Customers/Repositories/ICustomersRepository.cs

-using PSManagement.Domain.Customers.Aggregate;
+using PSManagement.Domain.Customers.Entities;
 using PSManagement.SharedKernel.Repositories;
 
 

PSManagement.Domain/Employees/Specification/EmployeesSpecification.cs

+using PSManagement.Domain.Employees.Entities;
+using PSManagement.SharedKernel.Specification;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PSManagement.Domain.Employees.Specification
+{
+    public class EmployeesSpecification : BaseSpecification<Employee>
+    {
+        public EmployeesSpecification(Expression<Func<Employee, bool>> criteria=null) : base(criteria)
+        {
+          
+            AddInclude(e => e.User);
+        }
+    }
+}

PSManagement.Domain/Identity/DomainErrors/UserErrors.cs

@@ -9,8 +9,9 @@ namespace PSManagement.Domain.Identity.DomainErrors
 {
     public class UserErrors
     {
-        public static readonly DomainError AlreadyUserExist = new ("The User Email Already Exist.", new DomainError("User email is already exist"));
-        public static readonly DomainError InvalidLoginAttempt = new ("The User Email or Password Are Incorrect.",new DomainError( "invalid credentails for login"));
+        public static readonly DomainError AlreadyUserExist =  new ("The User Email Already Exist.", "User email is already exist");
+        public static readonly DomainError InvalidLoginAttempt = new ("The User Email or Password Are Incorrect.", "invalid credentails for login");
+        public static readonly DomainError UnExistUser =new  ("The User Dosn't Exist.","invalid credentails ,the provieded credential doesn't match any record");
 
     }
 }

PSManagement.Domain/Identity/Entities/User.cs

@@ -13,6 +13,7 @@ namespace PSManagement.Domain.Identity.Entities
         public string HashedPassword { get; set; }
         public ICollection<Role> Roles { get; set; }
 
+
     }
 
 

PSManagement.Domain/Identity/Repositories/IRolesRepository.cs

+using PSManagement.Domain.Identity.Entities;
+using PSManagement.SharedKernel.Interfaces;
+using PSManagement.SharedKernel.Repositories;
+using System.Threading.Tasks;
+
+namespace PSManagement.Domain.Identity.Repositories
+{
+    public interface IRolesRepository : IRepository<Role>
+    {
+        public Task<Role> GetByRoleName(string roleName, ISpecification<Role> specification = null);
+    }
+}

PSManagement.Domain/Identity/Specification/UserSpecification.cs

+using PSManagement.Domain.Identity.Entities;
+using PSManagement.SharedKernel.Specification;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Linq.Expressions;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace PSManagement.Domain.Identity.Specification
+{
+    public class UserSpecification : BaseSpecification<User>
+    {
+        public  UserSpecification(Expression<Func<User, bool>> criteria = null) : base(criteria)
+        {
+            AddInclude(u => u.Roles);
+            AddInclude(u => u.Employee);
+
+        }
+    }
+}

PSManagement.Domain/Projects/Builders/ProjectBuilder.cs

@@ -15,7 +15,6 @@ namespace PSManagement.Domain.Projects.Builders
     {
         private ProposalInfo _proposalInfo;
         private ProjectInfo _projectInfo;
-        private ProjectStatus _projectStatus;
         private FinancialFund _financialFund;
         private Aggreement _projectAggreement;
 
@@ -26,22 +25,57 @@ namespace PSManagement.Domain.Projects.Builders
         private int _proposerId;
 
         private ICollection<Step> _steps;
-        private ICollection<Employee> _participants;
+        private ICollection<EmployeeParticipate> _participants;
         private ICollection<Attachment> _attachments;
 
-        public ICollection<FinancialSpending> FinancialSpending { get; set; }
+        private ICollection<FinancialSpending> _financialSpending;
 
+        public ProjectBuilder WithParticipants(ICollection<EmployeeParticipate> participates)
+        {
+            _participants = participates;
+            return this;
+        }
+
+            public ProjectBuilder WithFinancialSpending(ICollection<FinancialSpending> financialSpending)
+        {
+            _financialSpending = financialSpending;
+            return this;
+        }
+        public ProjectBuilder WithSteps(ICollection<Step> steps)
+        {
+            _steps = steps;
+            return this;
+        }
         public ProjectBuilder WithProposalInfo(ProposalInfo proposalInfo)
         {
             _proposalInfo = proposalInfo;
             return this;
         }
-
+        public ProjectBuilder WithTeamLeader(int  teamLeaderId)
+        {
+            _teamLeaderId = teamLeaderId;
+            return this;
+        }
+        public ProjectBuilder WithProjectManager(int projectManagerId)
+        {
+            _projectManagerId = projectManagerId;
+            return this;
+        }
+        public ProjectBuilder WithExecuter(int executerId)
+        {
+            _executerId = executerId;
+            return this;
+        }
         public ProjectBuilder WithProjectInfo(ProjectInfo projectInfo)
         {
             _projectInfo = projectInfo;
             return this;
         }
+        public ProjectBuilder WithProposer(int proposerId)
+        {
+            _proposerId = proposerId;
+            return this;
+        }
 
         public ProjectBuilder WithFinancialFund(FinancialFund financialFund)
         {
@@ -63,7 +97,9 @@ namespace PSManagement.Domain.Projects.Builders
 
         public Project Build()
         {
-            Project project= new Project(_proposalInfo, _projectInfo,_projectAggreement,_proposerId,_teamLeaderId,_projectManagerId ,_executerId);
+            Project project= new (_proposalInfo, _projectInfo,_projectAggreement,_proposerId,_teamLeaderId,_projectManagerId ,_executerId);
+            project.FinancialFund = _financialFund;
+
             if (_attachments is not null) {
 
                 foreach (Attachment attachment in _attachments) {
@@ -81,7 +117,15 @@ namespace PSManagement.Domain.Projects.Builders
 
                 }
             }
+            if (_participants is not null)
+            {
 
+                foreach (EmployeeParticipate participate in _participants)
+                {
+                    project.EmployeeParticipates.Add(participate);
+
+                }
+            }
             return project;
         }
     }

PSManagement.Domain/Projects/DomainErrors/ProjectsErrors.cs

-using PSManagement.SharedKernel.DomainErrors;
+using ErrorOr;
+using PSManagement.SharedKernel.DomainErrors;
 using System;
 using System.Collections.Generic;
 using System.Linq;
@@ -9,7 +10,7 @@ namespace PSManagement.Domain.Projects.DomainErrors
 {
     public class ProjectsErrors
     {
-        public static DomainError InvalidEntryError { get; } = new DomainError("Invalid Project Entry.", new DomainError("Invalid Project Data"));
+        public static Error InvalidEntryError { get; } = Error.Validation("ProjectError.InvalidEntry.", "Invalid Project Data");
 
     }
 }

PSManagement.Domain/Projects/Entities/Project.cs

-using PSManagement.Domain.Customers.Aggregate;
+using PSManagement.Domain.Customers.Entities;
 using PSManagement.Domain.Employees.Entities;
 using PSManagement.Domain.Projects.ValueObjects;
 using PSManagement.Domain.ProjectsStatus.Entites;

PSManagement.Domain/Projects/Repositories/IProjectsRepository.cs

-using System;
+using PSManagement.Domain.Projects.Entities;
+using PSManagement.SharedKernel.Repositories;
+using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Text;
@@ -6,7 +8,7 @@ using System.Threading.Tasks;
 
 namespace PSManagement.Domain.Projects.Repositories
 {
-    public interface IProjectsRepository
+    public interface IProjectsRepository :IRepository<Project>
     {
        
     }

PSManagement.Domain/Projects/ValueObjects/ProposalInfo.cs

-using PSManagement.Domain.Customers.Aggregate;
-using System;
+using System;
 
 namespace PSManagement.Domain.Projects.ValueObjects
 {