first commit

RS_system/Controllers/ConfiguracionController.cs

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+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using Rs_system.Data;
+using Rs_system.Models;
+
+using Microsoft.AspNetCore.Authorization;
+
+namespace Rs_system.Controllers;
+
+[Authorize]
+public class ConfiguracionController : Controller
+{
+    private readonly ApplicationDbContext _context;
+
+    public ConfiguracionController(ApplicationDbContext context)
+    {
+        _context = context;
+    }
+
+    // GET: Configuracion
+    public async Task<IActionResult> Index(string? categoria)
+    {
+        var query = _context.Configuraciones.AsQueryable();
+
+        if (!string.IsNullOrEmpty(categoria))
+        {
+            query = query.Where(c => c.Categoria == categoria);
+        }
+
+        var configuraciones = await query
+            .OrderBy(c => c.Categoria)
+            .ThenBy(c => c.Grupo)
+            .ThenBy(c => c.Orden)
+            .ToListAsync();
+
+        ViewBag.Categorias = await _context.Configuraciones
+            .Select(c => c.Categoria)
+            .Distinct()
+            .ToListAsync();
+            
+        ViewBag.SelectedCategoria = categoria;
+
+        return View(configuraciones);
+    }
+
+    // GET: Configuracion/Edit/5
+    public async Task<IActionResult> Edit(int? id)
+    {
+        if (id == null) return NotFound();
+
+        var config = await _context.Configuraciones.FindAsync(id);
+        if (config == null || !config.EsEditable) return NotFound();
+
+        return View(config);
+    }
+
+    // POST: Configuracion/Edit/5
+    [HttpPost]
+    [ValidateAntiForgeryToken]
+    public async Task<IActionResult> Edit(int id, [Bind("Id,Valor")] ConfiguracionSistema model)
+    {
+        if (id != model.Id) return NotFound();
+
+        var config = await _context.Configuraciones.FindAsync(id);
+        if (config == null || !config.EsEditable) return NotFound();
+
+        try
+        {
+            config.Valor = model.Valor;
+            config.ActualizadoEn = DateTime.UtcNow;
+            
+            _context.Update(config);
+            await _context.SaveChangesAsync();
+            
+            return RedirectToAction(nameof(Index), new { categoria = config.Categoria });
+        }
+        catch (DbUpdateConcurrencyException)
+        {
+            if (!ConfiguracionExists(model.Id)) return NotFound();
+            else throw;
+        }
+    }
+
+    private bool ConfiguracionExists(int id)
+    {
+        return _context.Configuraciones.Any(e => e.Id == id);
+    }
+}