marechai/Marechai/Areas/Admin/Controllers/InstructionSetExtensionsByProcessorController.cs

using System.Linq;
using System.Threading.Tasks;
using Marechai.Areas.Admin.Models;
using Marechai.Database.Models;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using Microsoft.EntityFrameworkCore.Query;

namespace Marechai.Areas.Admin.Controllers
{
    [Area("Admin"), Authorize]
    public class InstructionSetExtensionsByProcessorController : Controller
    {
        readonly MarechaiContext _context;

        public InstructionSetExtensionsByProcessorController(MarechaiContext context) => _context = context;

        // GET: InstructionSetExtensionsByProcessor
        public async Task<IActionResult> Index()
        {
            IIncludableQueryable<InstructionSetExtensionsByProcessor, Processor> marechaiContext =
                _context.InstructionSetExtensionsByProcessor.Include(i => i.Extension).Include(i => i.Processor);

            return View(await marechaiContext.OrderBy(e => e.Processor.Name).ThenBy(e => e.Extension.Extension).
                                              Select(e => new InstructionSetExtensionsByProcessorViewModel
                                              {
                                                  Id        = e.Id, Extension = e.Extension.Extension,
                                                  Processor = e.Processor.Name
                                              }).ToListAsync());
        }

        // GET: InstructionSetExtensionsByProcessor/Details/5
        public async Task<IActionResult> Details(int? id)
        {
            if(id == null)
                return NotFound();

            InstructionSetExtensionsByProcessor instructionSetExtensionsByProcessor =
                await _context.InstructionSetExtensionsByProcessor.Include(i => i.Extension).Include(i => i.Processor).
                               FirstOrDefaultAsync(m => m.Id == id);

            if(instructionSetExtensionsByProcessor == null)
                return NotFound();

            return View(instructionSetExtensionsByProcessor);
        }

        // GET: InstructionSetExtensionsByProcessor/Create
        public IActionResult Create()
        {
            ViewData["ExtensionId"] = new SelectList(_context.InstructionSetExtensions, "Id", "Extension");
            ViewData["ProcessorId"] = new SelectList(_context.Processors, "Id", "Name");

            return View();
        }

        // POST: InstructionSetExtensionsByProcessor/Create
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost, ValidateAntiForgeryToken]
        public async Task<IActionResult> Create(
            [Bind("Id,ProcessorId,ExtensionId")]
            InstructionSetExtensionsByProcessor instructionSetExtensionsByProcessor)
        {
            if(ModelState.IsValid)
            {
                _context.Add(instructionSetExtensionsByProcessor);
                await _context.SaveChangesAsync();

                return RedirectToAction(nameof(Index));
            }

            ViewData["ExtensionId"] = new SelectList(_context.InstructionSetExtensions, "Id", "Extension",
                                                     instructionSetExtensionsByProcessor.ExtensionId);

            ViewData["ProcessorId"] = new SelectList(_context.Processors, "Id", "Name",
                                                     instructionSetExtensionsByProcessor.ProcessorId);

            return View(instructionSetExtensionsByProcessor);
        }

        // GET: InstructionSetExtensionsByProcessor/Edit/5
        public async Task<IActionResult> Edit(int? id)
        {
            if(id == null)
                return NotFound();

            InstructionSetExtensionsByProcessor instructionSetExtensionsByProcessor =
                await _context.InstructionSetExtensionsByProcessor.FirstOrDefaultAsync(e => e.Id == id);

            if(instructionSetExtensionsByProcessor == null)
                return NotFound();

            ViewData["ExtensionId"] = new SelectList(_context.InstructionSetExtensions, "Id", "Extension",
                                                     instructionSetExtensionsByProcessor.ExtensionId);

            ViewData["ProcessorId"] = new SelectList(_context.Processors, "Id", "Name",
                                                     instructionSetExtensionsByProcessor.ProcessorId);

            return View(instructionSetExtensionsByProcessor);
        }

        // POST: InstructionSetExtensionsByProcessor/Edit/5
        // To protect from overposting attacks, please enable the specific properties you want to bind to, for
        // more details see http://go.microsoft.com/fwlink/?LinkId=317598.
        [HttpPost, ValidateAntiForgeryToken]
        public async Task<IActionResult> Edit(
            int id,
            [Bind("Id,ProcessorId,ExtensionId")]
            InstructionSetExtensionsByProcessor instructionSetExtensionsByProcessor)
        {
            if(id != instructionSetExtensionsByProcessor.Id)
                return NotFound();

            if(ModelState.IsValid)
            {
                try
                {
                    _context.Update(instructionSetExtensionsByProcessor);
                    await _context.SaveChangesAsync();
                }
                catch(DbUpdateConcurrencyException)
                {
                    if(!InstructionSetExtensionsByProcessorExists(instructionSetExtensionsByProcessor.Id))
                        return NotFound();

                    throw;
                }

                return RedirectToAction(nameof(Index));
            }

            ViewData["ExtensionId"] = new SelectList(_context.InstructionSetExtensions, "Id", "Extension",
                                                     instructionSetExtensionsByProcessor.ExtensionId);

            ViewData["ProcessorId"] = new SelectList(_context.Processors, "Id", "Name",
                                                     instructionSetExtensionsByProcessor.ProcessorId);

            return View(instructionSetExtensionsByProcessor);
        }

        // GET: InstructionSetExtensionsByProcessor/Delete/5
        public async Task<IActionResult> Delete(int? id)
        {
            if(id == null)
                return NotFound();

            InstructionSetExtensionsByProcessor instructionSetExtensionsByProcessor =
                await _context.InstructionSetExtensionsByProcessor.Include(i => i.Extension).Include(i => i.Processor).
                               FirstOrDefaultAsync(m => m.Id == id);

            if(instructionSetExtensionsByProcessor == null)
                return NotFound();

            return View(instructionSetExtensionsByProcessor);
        }

        // POST: InstructionSetExtensionsByProcessor/Delete/5
        [HttpPost, ActionName("Delete"), ValidateAntiForgeryToken]
        public async Task<IActionResult> DeleteConfirmed(int id)
        {
            InstructionSetExtensionsByProcessor instructionSetExtensionsByProcessor =
                await _context.InstructionSetExtensionsByProcessor.FirstOrDefaultAsync(e => e.Id == id);

            _context.InstructionSetExtensionsByProcessor.Remove(instructionSetExtensionsByProcessor);
            await _context.SaveChangesAsync();

            return RedirectToAction(nameof(Index));
        }

        bool InstructionSetExtensionsByProcessorExists(int id) =>
            _context.InstructionSetExtensionsByProcessor.Any(e => e.Id == id);

        [AcceptVerbs("Get", "Post")]
        public async Task<IActionResult> VerifyUnique(int processorId, int extensionId) =>
            await _context.InstructionSetExtensionsByProcessor.FirstOrDefaultAsync(i => i.ProcessorId == processorId &&
                                                                                        i.ExtensionId == extensionId) is
                null ? Json(true) : Json("The selected processor already has the selected extension.");
    }
}