first commit

RS_system/Controllers/RolController.cs

@@ -0,0 +1,199 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using Rs_system.Data;
+using Rs_system.Models;
+
+namespace Rs_system.Controllers;
+
+[Authorize]
+public class RolController : Controller
+{
+    private readonly ApplicationDbContext _context;
+
+    public RolController(ApplicationDbContext context)
+    {
+        _context = context;
+    }
+
+    // GET: Rol
+    public async Task<IActionResult> Index()
+    {
+        return View(await _context.RolesSistema
+            .Include(r => r.RolesPermisos)
+            .OrderBy(r => r.Nombre)
+            .ToListAsync());
+    }
+
+    // GET: Rol/Create
+    public IActionResult Create()
+    {
+        return View();
+    }
+
+    // POST: Rol/Create
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> Create([Bind("Codigo,Nombre,Descripcion")] RolSistema rol)
+    {
+        if (ModelState.IsValid)
+        {
+            if (await _context.RolesSistema.AnyAsync(r => r.Codigo == rol.Codigo))
+            {
+                ModelState.AddModelError("Codigo", "El código de rol ya existe.");
+                return View(rol);
+            }
+
+            rol.CreadoEn = DateTime.UtcNow;
+            _context.Add(rol);
+            await _context.SaveChangesAsync();
+            return RedirectToAction(nameof(Index));
+        }
+        return View(rol);
+    }
+
+    // GET: Rol/Edit/5
+    public async Task<IActionResult> Edit(int? id)
+    {
+        if (id == null) return NotFound();
+
+        var rol = await _context.RolesSistema.FindAsync(id);
+        if (rol == null) return NotFound();
+        return View(rol);
+    }
+
+    // POST: Rol/Edit/5
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> Edit(int id, [Bind("Id,Codigo,Nombre,Descripcion")] RolSistema rol)
+    {
+        if (id != rol.Id) return NotFound();
+
+        if (ModelState.IsValid)
+        {
+            try
+            {
+                _context.Update(rol);
+                await _context.SaveChangesAsync();
+            }
+            catch (DbUpdateConcurrencyException)
+            {
+                if (!RolExists(rol.Id)) return NotFound();
+                else throw;
+            }
+            return RedirectToAction(nameof(Index));
+        }
+        return View(rol);
+    }
+
+    // GET: Rol/Permissions/5
+    public async Task<IActionResult> Permissions(int? id)
+    {
+        if (id == null) return NotFound();
+
+        var rol = await _context.RolesSistema
+            .Include(r => r.RolesPermisos)
+                .ThenInclude(rp => rp.Permiso)
+            .FirstOrDefaultAsync(r => r.Id == id);
+
+        if (rol == null) return NotFound();
+
+        // Fetch all permissions from DB
+        var permissions = await _context.Permisos
+            .OrderBy(p => p.Modulo)
+            .ThenBy(p => p.Orden)
+            .ToListAsync();
+
+        ViewBag.Rol = rol;
+        ViewBag.AssignedControllerCodes = rol.RolesPermisos.Select(rp => rp.Permiso.Codigo).ToList();
+
+        return View(permissions);
+    }
+
+    // POST: Rol/UpdatePermissions
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+
+    public async Task<IActionResult> UpdatePermissions(int rolId, string[] selectedControllers)
+    {
+        var strategy = _context.Database.CreateExecutionStrategy();
+
+        try
+        {
+            await strategy.ExecuteAsync(async () =>
+            {
+                using var transaction = await _context.Database.BeginTransactionAsync();
+                
+                var rol = await _context.RolesSistema
+                    .Include(r => r.RolesPermisos)
+                    .FirstOrDefaultAsync(r => r.Id == rolId);
+
+                if (rol == null) throw new InvalidOperationException("Rol no encontrado");
+
+                // Remove existing permissions
+                _context.RolesPermisos.RemoveRange(rol.RolesPermisos);
+                await _context.SaveChangesAsync();
+
+                // Add new permissions
+                if (selectedControllers != null)
+                {
+                    foreach (var controllerCode in selectedControllers)
+                    {
+                        var permiso = await _context.Permisos.FirstOrDefaultAsync(p => p.Codigo == controllerCode);
+                        if (permiso != null)
+                        {
+                            _context.RolesPermisos.Add(new RolPermiso
+                            {
+                                RolId = rolId,
+                                PermisoId = permiso.Id,
+                                AsignadoEn = DateTime.UtcNow
+                            });
+                        }
+                    }
+                }
+
+                await _context.SaveChangesAsync();
+                await transaction.CommitAsync();
+            });
+            
+            TempData["SuccessMessage"] = "Permisos actualizados correctamente.";
+        }
+        catch (Exception ex)
+        {
+            TempData["ErrorMessage"] = "Ocurrió un error al actualizar los permisos: " + ex.Message;
+        }
+
+        return RedirectToAction(nameof(Index));
+    }
+
+    // POST: Rol/Delete/5
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> Delete(int id)
+    {
+        var rol = await _context.RolesSistema.FindAsync(id);
+        if (rol != null)
+        {
+            // Check if it's being used by users
+            var isUsed = await _context.RolesUsuario.AnyAsync(ru => ru.RolId == id);
+            if (isUsed)
+            {
+                TempData["ErrorMessage"] = "No se puede eliminar el rol porque está asignado a uno o más usuarios.";
+                return RedirectToAction(nameof(Index));
+            }
+
+            // Remove permissions first
+            var permissions = await _context.RolesPermisos.Where(rp => rp.RolId == id).ToListAsync();
+            _context.RolesPermisos.RemoveRange(permissions);
+
+            _context.RolesSistema.Remove(rol);
+            await _context.SaveChangesAsync();
+        }
+        return RedirectToAction(nameof(Index));
+    }
+
+    private bool RolExists(int id)
+    {
+        return _context.RolesSistema.Any(e => e.Id == id);
+    }
+}