Added "add/delete/get skill"

WebApp/Endpoints/AuthEndpoints.cs

@@ -1,8 +1,9 @@
-using Microsoft.AspNetCore.Http.HttpResults;
-using Microsoft.EntityFrameworkCore;
-using System.Runtime.Intrinsics.Arm;
+using System.Runtime.Intrinsics.Arm;
 using System.Security.Cryptography;
 using System.Text;
+using Microsoft.AspNetCore.Http;
+using Microsoft.AspNetCore.Http.HttpResults;
+using Microsoft.EntityFrameworkCore;
 using WebApp.Data;
 using WebApp.DTOs;
 using WebApp.Entities;
@@ -160,6 +161,73 @@ namespace WebApp.Endpoints
                 return Results.Json(new { message = "Skill added successfully!" }, statusCode: 201);
             });
 
+
+            group.MapDelete("/delete_skill", async (SingleSkillDto dto, HttpContext httpContext, ApplicationDbContext context, GeneralUseHelpers guh) =>
+            {
+                // Uzyskaj użytkownika z tokenu
+                Token? token = await guh.GetTokenFromHTTPContext(httpContext);
+                User? user = await guh.GetUserFromToken(token);
+
+                // Tylko wolontariusze powinien móc usuwac swoje skille
+                if (user == null || user.IsOrganisation)
+                {
+                    return Results.Json(new { message = "Unauthorized" }, statusCode: 401);
+                }
+
+                // Szukamy skilla w bazie o ID takim, jak w otrzymanym DTO
+                Skill? skill = await context.Skills.FindAsync(dto.Skill);
+                if (skill is null)
+                {
+                    return Results.Json(new { message = "Skill not found" }, statusCode: 404);
+                }
+
+                // Sprawdzamy, czy ten użytkownik ma już taki skill. Jeżeli nie ma, nie ma sensu usuwac go kilkukrotnie.
+                VolunteerSkill? vs = await context.VolunteerSkills.FirstOrDefaultAsync(v => v.UserId == user.UserId && v.SkillId == dto.Skill);
+                if (vs is not null)
+                {
+                    // Nie ma - zatem musimy dodać nowy VolunteerSkill do bazy
+                    VolunteerSkill newVs = dto.ToVolunteerSkillEntity(user.UserId);
+                    
+
+                    await context.VolunteerSkills.Where(v => v.SkillId == dto.Skill)
+                        .ExecuteDeleteAsync();
+
+                }
+                else
+                {
+                    // Ma - (ta para UserId <-> SkillId już istnieje w bazie) użytkownik już ma ten skill
+                    return Results.Json(new { message = "User already has deleted this skill" }, statusCode: 400);
+                }
+
+                return Results.Json(new { message = "Skill deleted successfully!" }, statusCode: 201);
+            });
+
+            group.MapGet("/get_skills", async (SingleSkillDto dto, HttpContext httpContext, ApplicationDbContext context, GeneralUseHelpers guh) =>
+            {
+                // Uzyskaj użytkownika z tokenu
+                Token? token = await guh.GetTokenFromHTTPContext(httpContext);
+                User? user = await guh.GetUserFromToken(token);
+
+                // Sprawdź, czy użytkownik istnieje i nie jest organizacją
+                if (user == null || user.IsOrganisation)
+                {
+                    return Results.Json(new { message = "Unauthorized" }, statusCode: 401);
+                }
+
+                // Pobierz skille wolontariusza
+                var skills = await context.VolunteerSkills
+                    .Where(vs => vs.UserId == user.UserId)
+                    .Include(vs => vs.Skill)
+                    .Select(vs => new
+                    {
+                        skillId = vs.Skill.SkillId,
+                        skillName = vs.Skill.Name
+                    })
+                    .ToListAsync();
+
+                return Results.Json(skills);
+            });
+
             return group;
         }