using Microsoft.AspNetCore.Components;
using System.Drawing;

namespace Egw.Core.Razor.Comp
{
    public partial class CalendarWeek
    {
        #region Public Properties

        /// <summary>
        /// Periodo da mostrare (tipicamente 1 settimana)
        /// </summary>
        [Parameter]
        public List<DateTime> DateList { get; set; } = new List<DateTime>();

        /// <summary>
        /// Eventi da inserire
        /// </summary>
        [Parameter]
        public List<CalendarEvent> EventList { get; set; } = new List<CalendarEvent>();

        /// <summary>
        /// Evento selezione data valida (= entro il periodo selezionato)
        /// </summary>
        [Parameter]
        public EventCallback<DateTime> DateSelected { get; set; }

        [Parameter]
        public EventCallback<bool> backToCalendar{ get; set; }


        [Parameter]
        public int EndHour { get; set; } = 20;

        /// <summary>
        /// Css titolo
        /// default: color: red
        /// </summary>
        [Parameter]
        public string HeadStyle { get; set; } = "color: #E67E22";

        /// <summary>
        /// Altezza di ogni blocco ora da mostrare
        /// </summary>
        [Parameter]
        public int HeightHour { get; set; } = 20;

        /// <summary>
        /// Larghezza calcolata delle etichette, minimo tra
        /// </summary>
        [Parameter]
        public int labelWidth { get; set; } = 15;

        [Parameter]
        public int StartHour { get; set; } = 8;

        /// <summary>
        /// Dimensioni viewbox GLOBALE
        /// </summary>
        [Parameter]
        public Size vBox { get; set; } = new Size(1200, 1600);

        /// <summary>
        /// Evento richiesta modifica settimana
        /// </summary>
        [Parameter]
        public EventCallback<int> WeekChanged { get; set; }

        #endregion Public Properties

        #region Protected Fields

        protected List<int> HourSlot = new List<int>();

        #endregion Protected Fields

        #region Protected Properties

        protected int calcColSpan
        {
            get => numDays + 1;
        }

        protected DateTime DtRif
        {
            get
            {
                DateTime answ = DateTime.Today;
                if (DateList != null && DateList.Count > 0)
                {
                    answ = DateList[0];
                }
                return answ;
            }
        }

        protected int numDays
        {
            get => DateList.Count;
        }

        protected int contWidth
        {
            get => (vBox.Width * 2) / (2 * numDays + 1);
        }

        private string lblWidth
        {
            get => $"{(double)(vBox.Width - (contWidth * numDays)) / vBox.Width:P2}".Replace(",", ".");
        }
        private string dataWidth
        {
            get => $"{(double)contWidth / vBox.Width:P2}".Replace(",", ".");
        }

        protected Size vBoxLabel
        {
            get
            {
                // label � MENO di 1/tot columns
                Size answ = new Size(contWidth / 2, vBox.Height);
                return answ;
            }
        }
        protected Size vBoxCont
        {
            get
            {
                // label � MENO di 1/tot columns
                Size answ = new Size(contWidth, vBox.Height);
                return answ;
            }
        }

        //protected Size vBoxLabel
        //{
        //    get
        //    {
        //        // label � MENO di 1/tot columns
        //        Size answ = new Size(labelWidth, vBox.Height);
        //        return answ;
        //    }
        //}

        #endregion Protected Properties

        #region Protected Methods

        /// <summary>
        /// Richiesta cambio sett di riferimento --&gt; riporta evento
        /// </summary>
        /// <param name="delta"></param>
        /// <returns></returns>
        protected async Task changeWeek(int delta)
        {
            await WeekChanged.InvokeAsync(delta);
        }

        protected override async Task OnParametersSetAsync()
        {
            HourSlot = new List<int>();
            for (int i = StartHour; i <= EndHour; i++)
            {
                HourSlot.Add(i);
            }
            await InvokeAsync(StateHasChanged);
        }

        /// <summary>
        /// GetIso8601WeekOfYear
        /// </summary>
        /// <param name="DtReq"></param>
        /// <returns></returns>
        protected int weekNum(DateTime DtReq)
        {
            int wNum = WeekData.GetIso8601WeekOfYear(DtReq);
            return wNum;
        }

        protected List<CalendarEvent> DayEvent(DateTime DtReq)
        {
            List<CalendarEvent> answ = new List<CalendarEvent>();
            if (EventList != null)
            {
                answ = EventList.Where(x => x.Inizio.Date == DtReq.Date).ToList();
            }
            return answ;
        }

        /// <summary>
        /// Genera etichette orarie (1 x ora)
        /// </summary>
        /// <returns></returns>
        protected List<CalendarEvent> LabelList()
        {
            int idx = 0;
            List<CalendarEvent> answ = HourSlot.Select(x => new CalendarEvent()
            {
                id = idx++,
                Inizio = DtRif.AddHours(x),
                Fine = DtRif.AddHours(x),
                CssClass = "text-light",
                Title = $"{x:00}:00",
                Description = $"{x:00}:00"
            }).ToList();
            return answ;
        }

        protected async Task openCalendarMonth()
        {
            await backToCalendar.InvokeAsync(true);
        }
        #endregion Protected Methods
    }
}