using _2021_backend.Models;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;
using Microsoft.EntityFrameworkCore;
using System;
using System.Linq;
using System.Security.Claims;
using System.Threading.Tasks;
using System.Collections.Generic;
using System.ComponentModel.DataAnnotations;

namespace _2021_backend.Pages.Students
{
    public class DetailsModel : PageModel
    {
        public _2021_backend.Data.BackendContext Context;

        public DetailsModel(_2021_backend.Data.BackendContext context)
        {
            Context = context;
        }
        [BindProperty]
        public Student Student { get; set; }

        [BindProperty]
        public int score { get; set; }
        public List<Session> Sessions { get; set; }

        public List<Submission> Submissions { get; set; }

        public List<Comment> CurComments { get; set; }
        public Session Interviewtime { get; set; }
        public Comment CommentSample { get; set; }
        public Submission SubmissionSample { get; set; }
        [Display(Name = "评论内容")]
        [BindProperty]
        [Required(ErrorMessage = "该项不能为空")]
        public string NewComment { get; set; }

        public List<SMS> Messages { get; set; }

        public IActionResult Construct(string? idstr)
        {
            if (idstr == null)
            {
                return NotFound();
            }
            Guid id = Guid.Parse(idstr);
            Student = Context.Students.Find(id);
            if (Student == null)
            {
                Console.WriteLine("Student not found.");
                return NotFound();
            }
            Sessions = new List<Session>();
            Submissions = new List<Submission>();
            Interviewtime = Context.Sessions.Find(Student.InterviewTime);
            foreach (var it in Student.Timelist)
            {
                var tm = Context.Sessions.Find(it);
                if (tm == null) Console.WriteLine("null encountered in timelist!");
                Sessions.Add(tm);
            }
            Messages = Context.SMS.Where(it => it.Host == id).ToList();
            CurComments = Context.Comments.Where(cmt => cmt.Student == Student.Guid).ToList();
            Sessions.Sort((Session a, Session b) => {
                var x = a.Day.CompareTo(b.Day);
                var y = a.BeginTime.CompareTo(b.BeginTime);
                var z = a.Place.CompareTo(b.Place);
                return (x != 0 ? x : y != 0 ? y : z != 0 ? z : 0);
            
            });
            Console.WriteLine("Page construction finished.");
            return Page();
        }

        public async Task<IActionResult> OnGetAsync(string? idstr)
        {
            Console.WriteLine("getting student " + idstr);
            return Construct(idstr);
        }
        public async Task<IActionResult> OnPostAsync()
        {
            if (!string.IsNullOrWhiteSpace(NewComment))
            {
                var cmt = new Comment();
                cmt.Student = Student.Guid;
                cmt.Content = NewComment;
                cmt.Operator = Guid.Parse(User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Sid).Value);
                var stu = Context.Students.Find(Student.Guid);
                stu.Comments.Add(cmt.Guid);
                Context.Comments.Add(cmt);
                Context.SaveChanges();
            }
            Construct(Student.Guid.ToString());
            return RedirectToPage(new { idstr = Student.Guid.ToString() });
        }

        public async Task<IActionResult> OnPostAcceptAsync()
        {
            Student = Context.Students.Find(Student.Guid);
            Student.Status = status.通过;
            Context.SaveChanges();
            CurComments = Context.Comments.Where(cmt => cmt.Student == Student.Guid).ToList();
            Messages = Context.SMS.Where(it => it.Host == Student.Guid).ToList();
            Construct(Student.Guid.ToString());
            return RedirectToPage(new { idstr = Student.Guid.ToString() });
        }

      

        public async Task<IActionResult> OnPostRejectAsync()
        {
            Student = Context.Students.Find(Student.Guid);
            Student.Status = status.不通过;
            Context.SaveChanges();
            Student.Score = 0;
            CurComments = Context.Comments.Where(cmt => cmt.Student == Student.Guid).ToList();
            Messages = Context.SMS.Where(it => it.Host == Student.Guid).ToList();
            Construct(Student.Guid.ToString());
            return RedirectToPage(new { idstr = Student.Guid.ToString() });
        }

        public async Task<IActionResult> OnPostSelectAsync(Guid stu, Guid time)
        {
            var st = Context.Students.Find(stu);
            if (st != null)
            {
                
                if (Context.Sessions.Any(it => it.Guid == time))
                {
                    var tm = Context.Sessions.Find(time);
                    if (tm.Students.Count < tm.Capacity)
                    {
                        if (st.InterviewTime != Guid.Empty)
                        {
                            var tmold = Context.Sessions.Find(st.InterviewTime);
                            if (tmold != null)
                            {
                                tmold.Students.RemoveAll(it => it == st.Guid);
                                Context.SaveChanges();
                            }
                        }
                        tm.Students.Add(stu);
                        st.InterviewTime = time;
                        if (st.Status != status.不通过 && st.Status != status.通过) st.Status = status.已选时间;
                        Context.SaveChanges();
                    }
                }
            }
            return Construct(Student.Guid.ToString());
        }

        public async Task<IActionResult> OnPostPullAsync()
        {
            await Utils.TencentSMS.Pull(Context, Context.Students.Find(Student.Guid), true);
            return Construct(Student.Guid.ToString());
        }

        public async Task<IActionResult> OnPostRankAsync()
        {
            var s = Context.Students.Find(Student.Guid);
            s.Score = score;
            s.Status = status.已评分;
            Context.SaveChanges();
            return Construct(Student.Guid.ToString());
        }


        public async Task<IActionResult> OnPostResultAsync()
        {
            var stu = Context.Students.Find(Student.Guid);
            if (stu.Status == status.通过)
                await Utils.TencentSMS.Send(Context, SMSType.Accept, stu, Context.Users.Find(Guid.Parse(User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Sid).Value)).Name);
            else if (stu.Status == status.不通过)
                await Utils.TencentSMS.Send(Context, SMSType.Reject, stu, Context.Users.Find(Guid.Parse(User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Sid).Value)).Name);
            return Construct(Student.Guid.ToString());
        }

        public async Task<IActionResult> OnPostSignAsync()
        {
            var stu = Context.Students.Find(Student.Guid);
            await Utils.TencentSMS.Send(Context, SMSType.Signed, stu, Context.Users.Find(Guid.Parse(User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Sid).Value)).Name);
            return Construct(Student.Guid.ToString());
        }

        public async Task<IActionResult> OnPostSelectTimeAsync()
        {
            var stu = Context.Students.Find(Student.Guid);
            await Utils.TencentSMS.Send(Context, SMSType.TimeSelect, stu, Context.Users.Find(Guid.Parse(User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Sid).Value)).Name);
            stu.Status = status.需调整时间;
            Context.SaveChanges();
            return Construct(Student.Guid.ToString());
        }

        public async Task<IActionResult> OnPostTimeAsync()
        {
            var stu = Context.Students.Find(Student.Guid);
            await Utils.TencentSMS.Send(Context, SMSType.TimeSet, stu, Context.Users.Find(Guid.Parse(User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Sid).Value)).Name);
            stu.Status = status.已确认时间;
            Context.SaveChanges();
            return Construct(Student.Guid.ToString());
        }
    }
}