using _2021_backend.Models;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using System.Linq;
using System.Threading.Tasks;

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

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

        public IActionResult OnGet()
        {
            Submission = new Submission();
            return Page();
        }

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

        // To protect from overposting attacks, see https://aka.ms/RazorPagesCRUD
        public async Task<IActionResult> OnPostAsync()
        {
            if (!ModelState.IsValid)
            {
                return Page();
            }
            var q = Context.Students.Where(stu => (stu.Name == Submission.Name || stu.Tel == Submission.Tel || stu.Stuid == Submission.Stuid));
            Student stu;
            if (q.Count() == 0)
            {
                stu = Student.create(Submission);
                stu.Status = status.刚报名;
                var q2 = from e in Context.Sessions select e.Id;
                var lst = q2.ToList();
                stu.Timelist = lst;
                Context.Students.Add(stu);
            }
            else
            {
                stu = q.FirstOrDefault();
                stu.Update(Submission);
            }
            Submission.Host = stu.Id;
            Context.Submissions.Add(Submission);
            Context.SaveChanges();

            return RedirectToPage("./Index");
        }
    }
}