Add Identity configuration, DTOs and Mappers

-Configured Identity using a custom User model to manage authentication and authorization, to be used in the project.
- Added multiple DTOs (Data Transfer Objects).
- Added multiple Mappers ( manual mapping).
- Updated AppDbContext and User model to fully integrate with Identity framework for user management.
-Added relationships between models.
Note : no migration yet

survey-beta/DTOs/Create/CreateAnswerDto.cs

@@ -0,0 +1,9 @@
+namespace survey_beta.DTOs.Create
+{
+    public class CreateAnswerDto
+    {
+        public string ResponseId { get; set; }
+        public string QuestionId { get; set; }
+        public string ChoiceId { get; set; }
+    }
+}

survey-beta/DTOs/Create/CreateChoiceDto.cs

@@ -0,0 +1,9 @@
+namespace survey_beta.DTOs.Create
+{
+    public class CreateChoiceDto
+    {
+        public string Letter { get; set; }
+        public string Content { get; set; }
+        public string QuestionId { get; set; } = Guid.NewGuid().ToString();
+    }
+}

survey-beta/DTOs/Create/CreateQuestionDto.cs

@@ -0,0 +1,9 @@
+namespace survey_beta.DTOs.Create
+{
+    public class CreateQuestionDto
+    {
+        public string Content { get; set; }
+        public string SurveyId { get; set; } = Guid.NewGuid().ToString();
+        public ICollection<CreateChoiceDto> Choices { get; set; }
+    }
+}

survey-beta/DTOs/Create/CreateResponseDto.cs

@@ -0,0 +1,9 @@
+namespace survey_beta.DTOs.Create
+{
+    public class CreateResponseDto
+    {
+        public string IpAddress { get; set; }
+        public string SurveyId { get; set; }
+        public ICollection<CreateAnswerDto> Answers { get; set; }
+    }
+}

survey-beta/DTOs/Create/CreateSurveyDto.cs

@@ -0,0 +1,12 @@
+namespace survey_beta.DTOs.Create
+{
+    public class CreateSurveyDto
+    {
+        public string Id { get; set; } = Guid.NewGuid().ToString();
+        public string Title { get; set; }
+        public string Description { get; set; }
+        public string Category { get; set; }
+        public DateTime ExpirationDate { get; set; }
+        public ICollection<CreateQuestionDto> Questions { get; set; }
+    }
+}

survey-beta/DTOs/Create/CreateUserDto.cs

@@ -0,0 +1,10 @@
+namespace survey_beta.DTOs.Create
+{
+    public class CreateUserDto
+    {
+        public string? Email { get; set; }
+        public string? Username { get; set; }
+        public string? Fullname { get; set; }
+        public string? Password { get; set; }
+    }
+}

survey-beta/DTOs/Create/LoginDto.cs

@@ -0,0 +1,8 @@
+namespace survey_beta.DTOs.Create
+{
+    public class LoginDto
+    {
+        public string UserName { get; set; }
+        public string Password { get; set; }
+    }
+}

survey-beta/DTOs/Default/AnswerDto.cs

@@ -0,0 +1,10 @@
+namespace survey_beta.DTOs.Default
+{
+    public class AnswerDto
+    {
+        public string Id { get; set; }
+        public string ResponseId { get; set; }
+        public string QuestionId { get; set; }
+        public string ChoiceId { get; set; }
+    }
+}

survey-beta/DTOs/Default/ChoiceDto.cs

@@ -0,0 +1,10 @@
+namespace survey_beta.DTOs.Default
+{
+    public class ChoiceDto
+    {
+        public string Id { get; set; }
+        public string Letter { get; set; }
+        public string Content { get; set; }
+        public string QuestionId { get; set; }
+    }
+}

survey-beta/DTOs/Default/QuestionDto.cs

@@ -0,0 +1,10 @@
+namespace survey_beta.DTOs.Default
+{
+    public class QuestionDto
+    {
+        public string Id { get; set; }
+        public string Content { get; set; }
+        public string SurveyId { get; set; }
+        public ICollection<ChoiceDto> Choices { get; set; }
+    }
+}

survey-beta/DTOs/Default/ResponseDto.cs

@@ -0,0 +1,10 @@
+namespace survey_beta.DTOs.Default
+{
+    public class ResponseDto
+    {
+        public string Id { get; set; }
+        public string IpAddress { get; set; }
+        public string SurveyId { get; set; }
+        public ICollection<AnswerDto> Answers { get; set; }
+    }
+}

survey-beta/DTOs/Default/SurveyDto.cs

@@ -0,0 +1,15 @@
+namespace survey_beta.DTOs.Default
+{
+    public class SurveyDto
+    {
+        public string Id { get; set; }
+        public string Title { get; set; }
+        public string Description { get; set; }
+        public string Category { get; set; }
+        public DateTime ExpirationDate { get; set; }
+        public bool IsPublished { get; set; }
+        public string AuthorId { get; set; }
+        public ICollection<QuestionDto> Questions { get; set; }
+        public ICollection<ResponseDto> Responses { get; set; }
+    }
+}

survey-beta/DTOs/Default/UserDto.cs

@@ -0,0 +1,11 @@
+namespace survey_beta.DTOs.Default
+{
+    public class UserDto
+    {
+        public string? Id { get; set; }
+        public string? Email { get; set; }
+        public string? Username { get; set; }
+        public string? Fullname { get; set; }
+        public ICollection<SurveyDto> AuthoredSurveys { get; set; }
+    }
+}

survey-beta/DataBaseContext/AppDbContext.cs

@@ -1,10 +1,13 @@
-using Microsoft.EntityFrameworkCore;
+using Microsoft.AspNetCore.Identity.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore;
 using survey_beta.Models;
+
 namespace survey_beta.DataBaseContext
 {
-    public class AppDbContext : DbContext
+    public class AppDbContext : IdentityDbContext<User>
+
     {
-        public DbSet<User> Users { get; set; }
+        public override DbSet<User> Users { get; set; }
         public DbSet<Survey> Surveys { get; set; }
         public DbSet<Question> Questions { get; set; }
         public DbSet<Choice> Choices { get; set; }

survey-beta/Mappers/AnswerMapper.cs

@@ -0,0 +1,30 @@
+using survey_beta.DTOs.Create;
+using survey_beta.DTOs.Default;
+using survey_beta.Models;
+
+namespace survey_beta.Mappers
+{
+    public class AnswerMapper
+    {
+        public static AnswerDto ToDto(Answer answer)
+        {
+            return new AnswerDto
+            {
+                Id = answer.Id,
+                ResponseId = answer.ResponseId,
+                QuestionId = answer.QuestionId,
+                ChoiceId = answer.ChoiceId
+            };
+        }
+        public static Answer ToEntity(CreateAnswerDto dto)
+        {
+            return new Answer
+            {
+                Id = Guid.NewGuid().ToString(),
+                ResponseId = dto.ResponseId,
+                QuestionId = dto.QuestionId,
+                ChoiceId = dto.ChoiceId
+            };
+        }
+    }
+}

survey-beta/Mappers/ChoiceMapper.cs

@@ -0,0 +1,31 @@
+using survey_beta.DTOs.Create;
+using survey_beta.DTOs.Default;
+using survey_beta.Models;
+
+namespace survey_beta.Mappers
+{
+    public class ChoiceMapper
+    {
+        public static ChoiceDto ToDto(Choice choice)
+        {
+            return new ChoiceDto
+            {
+                Id = choice.Id,
+                Letter = choice.Letter,
+                Content = choice.Content,
+                QuestionId = choice.QuestionId
+            };
+        }
+
+        public static Choice ToEntity(CreateChoiceDto dto)
+        {
+            return new Choice
+            {
+                Id = Guid.NewGuid().ToString(),
+                Letter = dto.Letter,
+                Content = dto.Content,
+                QuestionId = dto.QuestionId
+            };
+        }
+    }
+}

survey-beta/Mappers/QuestionMapper.cs

@@ -0,0 +1,29 @@
+using survey_beta.DTOs.Create;
+using survey_beta.DTOs.Default;
+using survey_beta.Models;
+
+namespace survey_beta.Mappers
+{
+    public class QuestionMapper
+    {
+        public static QuestionDto ToDto(Question question)
+        {
+            return new QuestionDto
+            {
+                Id = question.Id,
+                Content = question.Content,
+                SurveyId = question.SurveyId
+            };
+        }
+
+        public static Question ToEntity(CreateQuestionDto dto)
+        {
+            return new Question
+            {
+                Id = Guid.NewGuid().ToString(),
+                Content = dto.Content,
+                SurveyId = dto.SurveyId
+            };
+        }
+    }
+}

survey-beta/Mappers/ResponseMapper.cs

@@ -0,0 +1,29 @@
+using survey_beta.DTOs.Create;
+using survey_beta.DTOs.Default;
+using survey_beta.Models;
+
+namespace survey_beta.Mappers
+{
+    public class ResponseMapper
+    {
+        public static ResponseDto ToDto(Response response)
+        {
+            return new ResponseDto
+            {
+                Id = response.Id,
+                IpAddress = response.IpAddress,
+                SurveyId = response.SurveyId
+            };
+        }
+
+        public static Response ToEntity(CreateResponseDto dto)
+        {
+            return new Response
+            {
+                Id = Guid.NewGuid().ToString(),
+                IpAddress = dto.IpAddress,
+                SurveyId = dto.SurveyId
+            };
+        }
+    }
+}

survey-beta/Mappers/SurveyMapper.cs

@@ -0,0 +1,37 @@
+using survey_beta.DTOs.Create;
+using survey_beta.DTOs.Default;
+using survey_beta.Models;
+
+namespace survey_beta.Mappers
+{
+    public class SurveyMapper
+    {
+        public static SurveyDto ToDto(Survey survey)
+        {
+            return new SurveyDto
+            {
+                Id = survey.Id,
+                Title = survey.Title,
+                Description = survey.Description,
+                Category = survey.Category,
+                ExpirationDate = survey.ExpirationDate,
+                IsPublished = survey.IsPublished,
+                AuthorId = survey.AuthorId
+            };
+        }
+
+        public static Survey ToEntity(CreateSurveyDto dto, string authorId)
+        {
+            return new Survey
+            {
+                Id = Guid.NewGuid().ToString(),
+                Title = dto.Title,
+                Description = dto.Description,
+                Category = dto.Category,
+                ExpirationDate = dto.ExpirationDate,
+                IsPublished = false,
+                AuthorId = authorId
+            };
+        }
+    }
+}

survey-beta/Mappers/UserMapper.cs

@@ -0,0 +1,42 @@
+using survey_beta.DTOs.Create;
+using survey_beta.DTOs.Default;
+using survey_beta.Models;
+using System.Security.Cryptography;
+namespace survey_beta.Mappers
+{
+    public class UserMapper
+    {
+        public static UserDto ToDto(User user)
+        {
+            return new UserDto
+            {
+                Id = user.Id,
+                Email = user.Email,
+                Username = user.Username,
+                Fullname = user.Fullname
+            };
+        }
+        public static User ToEntity(CreateUserDto dto)
+        {
+            return new User
+            {
+                Id = Guid.NewGuid().ToString(),
+                Email = dto.Email,
+                Username = dto.Username,
+                Fullname = dto.Fullname,
+                PasswordHash = HashPassword(dto.Password)
+            };
+        }
+        public static string HashPassword(string password)
+        {
+            using (var sha256 = SHA256.Create())
+            {
+                var passwordBytes = System.Text.Encoding.UTF8.GetBytes(password);
+
+                var hashBytes = sha256.ComputeHash(passwordBytes);
+
+                return Convert.ToBase64String(hashBytes);
+            }
+        }
+    }
+}

survey-beta/Models/User.cs

@@ -1,6 +1,8 @@
-namespace survey_beta.Models
+using Microsoft.AspNetCore.Identity;
+
+namespace survey_beta.Models
 {
-    public class User
+    public class User : IdentityUser
     {
         public string? Id { get; set; }
         public string? Username { get; set; }

survey-beta/Program.cs

@@ -1,21 +1,30 @@
+using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
 using survey_beta.DataBaseContext;
+using survey_beta.Models;
+using survey_beta.Services;
 
 var builder = WebApplication.CreateBuilder(args);
 
 // Add services to the container
 builder.Services.AddDbContext<AppDbContext>(options =>
     options.UseNpgsql(builder.Configuration.GetConnectionString("DefaultConnection")));
-
 builder.Services.AddControllers(); 
 builder.Services.AddEndpointsApiExplorer(); 
 
 var app = builder.Build();
 
 // Configure the HTTP request pipeline.
+builder.Services.AddIdentity<User, IdentityRole>()
+            .AddEntityFrameworkStores<AppDbContext>()
+            .AddDefaultTokenProviders();
+
+builder.Services.AddScoped<UserService>();
 
 app.UseHttpsRedirection();
 
+app.UseAuthentication();
+
 app.UseAuthorization();
 
 app.MapControllers();