using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.AspNetCore.Mvc.Rendering;
using Microsoft.EntityFrameworkCore;
using _2021_backend.Data;
using _2021_backend.Models;

namespace _2021_backend.Pages.Submissions
{
    public class EditModel : PageModel
    {
        public readonly _2021_backend.Data.BackendContext Context;

        public EditModel(_2021_backend.Data.BackendContext context)
        {
            Context = context;
        }

        [BindProperty]
        public Submission Submission { get; set; }

        public async Task<IActionResult> OnGetAsync(string? strid)
        {
            int id = int.Parse(strid);
            if (id == null)
            {
                return NotFound();
            }

            Submission = await Context.Submissions.FirstOrDefaultAsync(m => m.Id == id);

            if (Submission == null)
            {
                return NotFound();
            }
            return Page();
        }

        // To protect from overposting attacks, enable the specific properties you want to bind to.
        // For more details, see https://aka.ms/RazorPagesCRUD.
        public async Task<IActionResult> OnPostAsync()
        {
            if (!ModelState.IsValid)
            {
                return Page();
            }

            Context.Attach(Submission).State = EntityState.Modified;

            try
            {
                await Context.SaveChangesAsync();
            }
            catch (DbUpdateConcurrencyException)
            {
                if (!SubmissionExists(Submission.Id))
                {
                    return NotFound();
                }
                else
                {
                    throw;
                }
            }

            return RedirectToPage("./Index");
        }

        private bool SubmissionExists(int id)
        {
            return Context.Submissions.Any(e => e.Id == id);
        }
    }
}