using _2021_backend.Data;
using _2021_backend.Models;
using _2021_backend.Utils;
using Microsoft.AspNetCore.Mvc;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.Json;
using System.Threading.Tasks;

namespace _2021_backend.Controllers
{
    [Route("api/submit")]
    public class SubmissionController : Controller
    {
        public BackendContext Context;

        public SubmissionController(BackendContext context)
        {
            Context = context;
        }
        [HttpPost]
        public async Task<IActionResult> Post([FromForm] string dto)
        {
            var aDto = JsonSerializer.Deserialize<SubmissionDto>(dto);
            string ip = Request.Headers["X-Real-IP"].FirstOrDefault();
            if (aDto.Iscomplete() == false)
                return StatusCode(400, ApiResponse.Error("TICKET_INFO_INCOMPLETE"));
            if (aDto.Check() == false)
                return StatusCode(400, ApiResponse.Error("TICKET_NOT_LEGEAL"));
            Submission sub = new Submission(aDto, ip);
            foreach (var tm in Context.Sessions)
            {
                if (aDto.Timelist.Any(it => it.Day.Day == tm.Day.Day && it.BeginTime.TimeOfDay == tm.BeginTime.TimeOfDay))
                {
                    sub.Timelist.Add(tm.Guid);
                }
            }
            var q = Context.Students.Where(stu => (stu.Name == aDto.Name || stu.Stuid == aDto.Stuid));
            Student stu;
            if (q.Count() == 0)
            {
                stu = Student.create(sub);
                stu.Status = status.刚报名;
                Context.Students.Add(stu);
            }
            else
            {
                stu = q.FirstOrDefault();
                stu.Update(sub);
            }
            sub.Host = stu.Guid;
            Context.Submissions.Add(sub);
            Context.SaveChanges();
            await TencentSMS.Send(Context, SMSType.Signed, stu, _2021_backend.Models.User.Bot.stuID);
            return Ok(ApiResponse.Success("success"));

        }
    }
    [ApiController]
    [Route("api/sessionlist")]
    public class SessionlistContoller : Controller
    {
        private readonly BackendContext _context;
        public SessionlistContoller(BackendContext context)
        {
            _context = context;
        }
        [HttpGet]

        public IActionResult GetSessions()
        {
            var query = _context.Sessions.OrderBy(r => r.Day).ThenBy(r => r.BeginTime).ThenBy(r => r.Place).Where(e => e.Capacity > e.Students.Count + 1).Select(r => new SessionDto
            {
                BeginTime = r.BeginTime,
                Day = r.Day,
            });
            return Ok(ApiResponse.Success(query.ToList().FindAll(it => it.Day.Add(it.BeginTime.TimeOfDay).CompareTo(DateTime.Now) > 0).Distinct(new SessionDtoComparer()).ToList()));
            //return Ok(ApiResponse.Success("报名结束了"));
        }
    }
}