using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Authorization;
using Microsoft.EntityFrameworkCore;
using rockfishCore.Models;
using rockfishCore.Util;
using System.ComponentModel.DataAnnotations;

namespace rockfishCore.Controllers
{
    [Produces("text/plain")]
    [Route("rvr")]
    public class RvrController : Controller //RAVEN trial license request 
    {
        private readonly rockfishContext ct;

        public RvrController(rockfishContext context)
        {
            ct = context;
        }

        public class dtoRequest
        {
            [Required]
            public Guid DbId { get; set; }
            [Required, EmailAddress]
            public string Email { get; set; }
            [Required]
            public string Company { get; set; }
            [Required]
            public string Contact { get; set; }
        }

        [HttpPost]
        public async Task<IActionResult> Post([FromBody] dtoRequest r)
        {
            if (!ModelState.IsValid)
            {
                return BadRequest(ModelState);
            }

            if (r.DbId == Guid.Empty)
            {
                return BadRequest("E1000 - DBId invalid");
            }

            //can't do this if there is a purchased license with this dbid already
            if (await ct.License.Where(z => z.DbId == r.DbId).AnyAsync())
            {
                return BadRequest("E1000 - Can't trial; there is already a purchased license issued for this database Id");
            }

            System.Diagnostics.Debug.WriteLine("RvRController:Post - TODO: Test MustBeOlderThan date code");

            //if there is an active trial for this db then can't do this they must request we re-release it or completely zap the database instead
            var MustBeOlderThan = DateUtil.DateToEpoch(DateTime.Now.AddDays(-45));
            if (await ct.TrialRequest.Where(z => z.DbId == r.DbId && z.DtProcessed != null && z.DtProcessed > MustBeOlderThan).AnyAsync())
            {
                return BadRequest("E1000 - Can't trial; there is already an active trial license issued for this database Id");             
            }

            //Everything seems to be in order, save the request and return ok
            var NewRequest=new TrialRequest();
            NewRequest.Email=r.Email;
            



            //TODO: closer to release as ROCKFISH might change before then

            //Attempt to match customer by dbid if not then create new customer of trial type for the indicated dbid and regto
            //ensure this email goes into the adminEmail array if not already there

            //Flag customer record has having an unfulfilled trial request 

            //If it's a new customer or an existing one with non-matching email then send a verification email to the customer

            //When a response is spotted in email then Rockfish should see it and flag the customer as verified
            //Probably some general purpose email Verify code would be helpful here as it would likely be useful for all manner of things

            //When user releases trial in Rockfish a license key will be generated ready for the customers RAVEN to retrieve

            return Ok("Request accepted. Awaiting email verification and approval.");


        }


    }//eoc
}//eons