MyDarling/Controllers/FigureController.cs

using System.Data;
using Microsoft.AspNetCore.Authorization;
using Microsoft.AspNetCore.Mvc;
using Microsoft.EntityFrameworkCore;
using MyDarling.Models;

namespace MyDarling.Controllers
{
	[Authorize]
	public class FigureController : Controller
	{
		private DataContext context;
		private IWebHostEnvironment environment;
		public FigureController(DataContext context, IWebHostEnvironment environment)
		{
			this.context = context;
			this.environment = environment;
		}

		public async Task<IActionResult> Details(string id)
		{
			var figure = await context.Figures
				.Where(f => f.Id.Equals(id))
				.FirstOrDefaultAsync();
			if (figure == null)
			{
				return NotFound();
			}
			var product = await context.Products
				.Where(b => b.Figures.Contains(figure))
				.FirstOrDefaultAsync();
			if (product == null)
			{
				return NotFound();
			}
			return View(figure);
		}

		[HttpPost]
		public async Task<IActionResult> Edit(string id)
		{
			if (id == null)
			{
				return NotFound();
			}

			var figure = await context.Figures
				.Where(f => f.Id.Equals(id))
				.FirstOrDefaultAsync();

			if (figure == null)
			{
				return NotFound();
			}

			var product = await context.Products
				.Where(b => b.Figures.Contains(figure))
				.FirstOrDefaultAsync();

			if (await TryUpdateModelAsync<Figure>(
				figure,
				"",
				f => f.Description))
			{
				try
				{
					await context.SaveChangesAsync();
					return RedirectToAction("Details", "Products", new { Id = product?.Id });
				}
				catch (SystemException)
				{
					ModelState.AddModelError("", "Unable to save changes");
				}
			}
			return View(figure);
		}

		[HttpPost]
		public async Task<ActionResult> Delete(string id)
		{
			var figure = await context.Figures.FindAsync(id);
			if (figure == null)
			{
				return NotFound();
			}
			var product = await context.Products
				.Where(b => b.Figures.Contains(figure))
				.FirstAsync();

			try
			{
				string filePath = $"/Content/{product.Id}/{figure.Id}.jpg";
				FileInfo figureFile = new FileInfo(environment.WebRootPath + filePath);
				if (figureFile.Exists)
				{
					figureFile.Delete();
				}
				
				string thumbFilePath = $"/Content/{product.Id}/{figure.Id}_thumb.jpg";
				FileInfo thumbFile = new FileInfo(environment.WebRootPath + thumbFilePath);
				if (thumbFile.Exists)
				{
					thumbFile.Delete();
				}

				context.Figures.Remove(figure);
				await context.SaveChangesAsync();
				return RedirectToAction("Details", "Products", new { Id = product?.Id });
			}
			catch (DbUpdateException)
			{
				return RedirectToAction(nameof(Delete), new { id = id, saveChangesError = true });
			}
		}
	}
}