using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace BoardR
{
    class BoardItem
    {

        string title;
        DateTime dueDate;
        StatusStages status = StatusStages.Open;

        List<EventLog> historyEvents = new List<EventLog>();

        public StatusStages Status
        {
            get
            {
                return this.status;
            }
            set
            {
                this.status = value;
            }
        }

        public DateTime DueDate
        {
            get { return this.dueDate; }

            set { this.dueDate = value; }
        }

        public string Title
        {
            get
            {
                return this.title;
            }
            set
            {
                // validate
                if (ValidateTitle(title) && ValidateDate(dueDate))
                {
                    this.title = value;
                }

            }
        }

        public BoardItem(string title, DateTime dueDate)
        {
            this.Title = title; //       ТУК НА МЕН ВИНАГИ МИ ДАВА exeption ?!??!?!?!??!
            this.DueDate = dueDate;

            this.historyEvents.Add(new EventLog("Board item was created"));
        }

        public void AdvanceStatus()
       {
            if (this.status != StatusStages.Verified)
                this.status++;

        }

        public void RevertStatus()
        {
            if (this.status != StatusStages.Open)
                this.status--;
        }

        public void AddingItems(string title, DateTime dueDate)
        {
            EventLog eventItself = new EventLog(title);
            historyEvents.Add(eventItself);
        }

        public string ViewHistory()
        {
            return string.Join("\n", this.historyEvents.Select(x => x.ViewInfo()));
        }

        public string ViewInfo()
        {
            return $"'{title}', [{status}|{dueDate.ToString("dd-MM-yyyy")}]";
        }

        private static bool ValidateDate(DateTime dueDate)
        {
            if (dueDate <= DateTime.Now)
            {
                throw new ArgumentException("Due date cannot be in the past");
            }
            else
            {
                return true;
            }
        }

        private static bool ValidateTitle(string itemTitle)
        {
            if (string.IsNullOrEmpty(itemTitle))
            {
                throw new ArgumentException("Title cannot be null or empty");
            }
            else if (itemTitle.Length < 5 || itemTitle.Length > 30)
            {
                throw new ArgumentException("Title must be between 5 and 30 chars");
            }
            else
            {
                return true;
            }
        }

    }
}