using System.Threading.Tasks;
using System;
using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Routing;
using Microsoft.AspNetCore.Authorization;
using Microsoft.Extensions.Logging;
using AyaNova.Models;
using AyaNova.Api.ControllerHelpers;
using AyaNova.Biz;
using Microsoft.EntityFrameworkCore;
using System.Linq;
using System.Collections.Generic;

namespace AyaNova.Api.Controllers
{
    [ApiController]
    [ApiVersion("8.0")]
    [Route("api/v{version:apiVersion}/schedule")]
    [Produces("application/json")]
    [Authorize]
    public class ScheduleController : ControllerBase
    {
        private readonly AyContext ct;
        private readonly ILogger<ScheduleController> log;
        private readonly ApiServerState serverState;

        /// <summary>
        /// ctor
        /// </summary>
        /// <param name="dbcontext"></param>
        /// <param name="logger"></param>
        /// <param name="apiServerState"></param>  
        public ScheduleController(AyContext dbcontext, ILogger<ScheduleController> logger, ApiServerState apiServerState)
        {
            ct = dbcontext;
            log = logger;
            serverState = apiServerState;
        }

        /// <summary>
        /// Get personal schedule for parameters specified
        /// </summary>
        /// <param name="p">Personal schedule parameters</param>
        /// <param name="apiVersion">From route path</param>
        /// <returns></returns>
        [HttpPost("personal")]
        public async Task<IActionResult> PostPersonalSchedule([FromBody] PersonalScheduleParams p, ApiVersion apiVersion)
        {
            if (!serverState.IsOpen)
                return StatusCode(503, new ApiErrorResponse(serverState.ApiErrorCode, null, serverState.Reason));
            if (!ModelState.IsValid)
                return BadRequest(new ApiErrorResponse(ModelState));

            List<PersonalScheduleListItem> r = new List<PersonalScheduleListItem>();

            var UserId = UserIdFromContext.Id(HttpContext.Items);
            var UType = UserTypeFromContext.Type(HttpContext.Items);
            //this covers the largest possible window that could display due to nearly a week of the last or next month showing
            DateTime dtStart = p.Start.AddDays(-6);
            DateTime dtEnd = p.End.AddDays(6);



            //WORKORDERS
            if (p.WorkOrders && (UType == UserType.Service || UType == UserType.ServiceContractor))
            {
                r.AddRange(await ct.ViewSchedulePersonalWorkOrder.Where(x => x.SchedUserId == UserId && x.StartDate > dtStart && x.StopDate < dtEnd)
                    .Select(x => new PersonalScheduleListItem() { Id = x.WoItemSchedUserId, Color = ColorFromWOItem(x, p), Start = EpochSeconds(x.StartDate), End = EpochSeconds(x.StopDate), Type = AyaType.WorkOrderItemScheduledUser, Name = NameFromWOItem(x, p) })
                    .ToListAsync());
            }
            return Ok(ApiOkResponse.Response(r));
        }

        private static long? EpochSeconds(DateTime? dt)
        {
            if (dt == null) return null;
            DateTimeOffset dto = new DateTimeOffset((DateTime)dt);
            return dto.ToUnixTimeMilliseconds();
        }

        private static string ColorFromWOItem(ViewSchedulePersonalWorkOrder v, PersonalScheduleParams p)
        {
            switch (p.ColorSource)
            {
                case PersonalScheduleWorkOrderColorSource.WorkOrderStatus:
                    return v.WorkOrderStatusColor;
                case PersonalScheduleWorkOrderColorSource.WorkOrderItemStatus:
                    return v.WorkOrderItemStatusColor;
                case PersonalScheduleWorkOrderColorSource.WorkOrderItemPriority:
                    return v.WorkOrderItemPriorityColor;
            }
            return string.Empty;
        }

        private static string NameFromWOItem(ViewSchedulePersonalWorkOrder v, PersonalScheduleParams p)
        {
            // Name=[wonumber customername]
            return v.Serial.ToString() + " " + v.CustomerName;
        }


        public enum PersonalScheduleWorkOrderColorSource : int
        {
            None = 0,
            WorkOrderStatus = 2,
            WorkOrderItemStatus = 3,
            WorkOrderItemPriority = 4

        }

        public class PersonalScheduleParams
        {
            public DateTime Start { get; set; }
            public DateTime End { get; set; }
            public PersonalScheduleWorkOrderColorSource ColorSource { get; set; }
            public bool WorkOrders { get; set; }
            public bool Reviews { get; set; }
            public bool Reminders { get; set; }
        }

        public class PersonalScheduleListItem
        {
            public long? Start { get; set; }
            public long? End { get; set; }
            public bool Timed { get { return true; } }
            public string Name { get; set; }
            public string Color { get; set; }
            public AyaType Type { get; set; }
            public long Id { get; set; }

        }
        //------------


    }//eoc
}//eons