AfRApay/AfRApay.Web/Pages/EditUser.cshtml.cs

using System.Net;
using AfRApay.Web.Backend.Database;
using AfRApay.Web.Backend.Database.Tables;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace AfRApay.Web.Pages;

public class EditUserModel : PageModel {
	public void OnGet() { }

	public async void OnPost() {
		await using var db     = new DatabaseContext();
		var             userId = long.Parse(RouteData.Values["id"]!.ToString()!);
		var             user   = db.Users.First(p => p.Id == userId);

		if (Request.Form["action"] == "delete") {
			db.Remove(user);
			await db.SaveChangesAsync();
			Response.Redirect("/");
			return;
		}

		if (Request.Form["action"] == "deleteCard" && Request.Form.ContainsKey("cardId")) {
			var card = db.Cards.First(p => p.Id == Request.Form["cardId"].ToString());
			db.Remove(card);
			await db.SaveChangesAsync();
			Response.Redirect($"/EditUser/{userId}");
			return;
		}

		if (Request.Form["action"] == "linkCard") {
			var linkFlag  = db.Config.FirstOrDefault(p => p.Name == "link");
			var lTimeFlag = db.Config.FirstOrDefault(p => p.Name == "lTime");

			Response.Redirect($"/EditUser/{userId}");

			if (lTimeFlag == null) {
				lTimeFlag = new Config { Name = "lTime", Value = DateTime.UtcNow.ToString("s") };
				db.Add(lTimeFlag);
				await db.SaveChangesAsync();
			}
			else {
				lTimeFlag.Value = DateTime.UtcNow.ToString("s");
				await db.SaveChangesAsync();
			}

			if (linkFlag == null) {
				linkFlag = new Config { Name = "link", Value = user.Id.ToString() };
				db.Add(linkFlag);
				await db.SaveChangesAsync();
				return;
			}

			if (linkFlag.Value.Equals(user.Id.ToString())) {
				return;
			}

			linkFlag.Value = user.Id.ToString();
			await db.SaveChangesAsync();
			return;
		}

		if (Request.Form["action"] == "save" && Request.Form.ContainsKey("nickname") && !string.IsNullOrWhiteSpace(Request.Form["nickname"])) {
			var nick = Request.Form["nickname"].ToString();
			if (db.Users.Any(p => p.Nickname == nick && p.Id != userId)) {
				Response.Redirect($"/ErrorRedirect?redir=EditUser/{userId}&message=" + WebUtility.UrlEncode("User with nick already exists."));
				return;
			}

			user.Nickname = nick;
			await db.SaveChangesAsync();
		}

		Response.Redirect($"/#{user.Nickname}");
	}

	public enum CardType {
		Normal               = 1,
		LinkPlaceholder      = 2,
		DeletionConfirmation = 3
	}
}