Users Controller added and developed GetPermissions HttpGet Action to fetch all the permissions of a user just by providing a userid. WeatherForeCast default controller removed

Author: HasanJaved-Developer

UserManagementApi/Controllers/UsersController.cs

@@ -0,0 +1,47 @@
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using UserManagementApi.Data;
+using UserManagementApi.DTO;
+
+namespace UserManagementApi.Controllers
+{
+
+    [ApiController]
+    [Route("api/users")]
+    public class UsersController : ControllerBase
+    {
+        private readonly AppDbContext _db;
+        public UsersController(AppDbContext db) => _db = db;
+
+        // GET: api/users/{userId}/permissions
+        [HttpGet("{userId:int}/permissions")]
+        public async Task<ActionResult<UserPermissionsDto>> GetPermissions(int userId)
+        {
+            var user = await _db.Users.FirstOrDefaultAsync(u => u.Id == userId);
+            if (user == null) return NotFound($"User {userId} not found.");
+
+            // Build a single LINQ query that filters functions to those reachable
+            // via the user's roles (no client-side filtering).
+            var categories = await _db.Categories
+                .Select(c => new CategoryDto(
+                    c.Id,
+                    c.Name,
+                    c.Modules
+                      .Select(m => new ModuleDto(
+                          m.Id, m.Name, m.Area, m.Controller, m.Action,
+                          m.Functions
+                           .Where(f => f.RoleFunctions
+                               .Any(rf => rf.Role.UserRoles.Any(ur => ur.UserId == userId)))
+                           .Select(f => new FunctionDto(f.Id, f.Code, f.DisplayName))
+                           .ToList()
+                      ))
+                      .Where(md => md.Functions.Any()) // keep only modules with at least one permitted function
+                      .ToList()
+                ))
+                .Where(cd => cd.Modules.Any()) // keep only categories with at least one permitted module
+                .ToListAsync();
+
+            var dto = new UserPermissionsDto(user.Id, user.UserName, categories);
+            return Ok(dto);
+        }
+    }