///
/// Copyright (c) 2019 Sensus Slovensko a.s.
///
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using Common;

namespace Config.Entities
{
    /// <summary>
    /// Stores one test procedure, supports revisions and history log
    /// </summary>
	public class Profile : IHasName, IHasItemNr
    {
        public virtual int Id { get; protected set; }
		public virtual int ItemNr { get; set; }
		public virtual string Name { get; set; }
        public virtual string Description { get; set; }			    /// Short description
		public virtual string CreationUser { get; set; }		    /// Name of the user who has created or changed this procedure
		public virtual DateTime CreationTime { get; set; }		    /// Date and time of the creation or change
		public virtual string LastChgUser { get; set; }			    /// Name of the user who has created or changed this procedure
		public virtual DateTime LastChgTime { get; set; }		    /// Date and time of the creation or change
        public virtual ProfileType ProfileType { get; set; }
        public virtual ErrorLimitType ErrorLimitType { get; set; }

		public virtual IList<PTest> Tests { get; set; }

        /// ------------- Additional stuff not mapped into the database -------------

        public Profile()
        {
			Tests = new List<PTest>();

			///
			/// Default values
			/// 
            CreationUser = Users.CurrentUser.UserName();
			CreationTime = DateTime.Now;
			LastChgUser = CreationUser;
			LastChgTime = CreationTime;
			Description = string.Empty;
        }

		public Profile(string name, int itemNr)
			: this()
		{
			Name = name;
			ItemNr = itemNr;
		}

        public virtual Profile Clone()
        {
            Profile result = new Profile();

			result.ItemNr = ItemNr;
			result.Name = Name;
			result.Description = Description;
			result.CreationUser = CreationUser;
			result.CreationTime = CreationTime;
			result.LastChgUser = LastChgUser;
			result.LastChgTime = LastChgTime;
            result.ProfileType = ProfileType;
            result.ErrorLimitType = ErrorLimitType;

			foreach (var test in Tests) { result.Tests.Add(test.Clone()); }

            return result;
        }

        public virtual void Export(StreamWriter output)
        {
			output.WriteLine(ItemNr.ToString(CultureInfo.InvariantCulture));
            output.WriteLine(Name);
            output.WriteLine(Description);
            output.WriteLine(CreationUser);
			output.WriteLine(CreationTime.ToString(CultureInfo.InvariantCulture));
            output.WriteLine(LastChgUser);
			output.WriteLine(LastChgTime.ToString(CultureInfo.InvariantCulture));

            foreach (var test in Tests) { test.Export(output); }
            output.WriteLine();

            output.Close();
        }

        public static Profile Import(StreamReader input)
        {
            Profile result = new Profile();

			result.ItemNr = int.Parse(input.ReadLine(), CultureInfo.InvariantCulture);
            result.Name = input.ReadLine();
            result.Description = input.ReadLine();
            result.CreationUser = input.ReadLine();
			result.CreationTime = DateTime.Parse(input.ReadLine(), CultureInfo.InvariantCulture);
            result.LastChgUser = input.ReadLine();
			result.LastChgTime = DateTime.Parse(input.ReadLine(), CultureInfo.InvariantCulture);
            string line = input.ReadLine();

            while (true)
            {
                PTest tst = PTest.Import(input, result);
                if (tst == null)
                    break;
                else
                    result.Tests.Add(tst);
            }

            return result;
        }

        public virtual string Compare(StreamReader inp)
        {
            System.Text.StringBuilder diff = new System.Text.StringBuilder();
            const string fmt = "{0} = {1}\r\n (in the file {2})\r\n";
            string ln;

            ln = inp.ReadLine();            /// skip ItemNr
            ln = inp.ReadLine(); if (ln != Name)                          { diff.AppendFormat(fmt, "Name", Name, ln); };
            ln = inp.ReadLine(); if (ln != Description)                   { diff.AppendFormat(fmt, "Description", Description, ln); };
            ln = inp.ReadLine();            /// skip CreationUser
            ln = inp.ReadLine();            /// skip CreationTime
            ln = inp.ReadLine();            /// skip LastChgUser
            ln = inp.ReadLine();            /// skip LastChgTime

            //foreach (var test in Tests)
            //{
            //    string testDiff = test.Compare(inp);
            //    if (testDiff.Contains(
            //}

            //bool extraTestsInFile = true;
            //while (Test.Import(inp, null) != null) { extraTestsInFile = true; }

            return diff.ToString();
        }

		public override string ToString()
		{
			return string.Format("{0}", Name);
		}
    }
}