using Newtonsoft.Json;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Dbas;
using Saxonite.Net.Standard.Base.Bus;
using Saxonite.Net.Standard.Base.App;
using System;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using Sarand.Net.Standard.Base.Utils;
using Newtonsoft.Json.Converters;

namespace Saxonite.Net.Standard.Base.App
{
	//=======================================================================
	public class SaxSessionData
	{
		//-------------------------------------------------------------------
		// Protected construction.
		protected SaxSessionData()
		{
		}

		//-------------------------------------------------------------------
		// Construction.
		/// <summary>Hidden constructor for deserialisation only.</summary>
		private SaxSessionData(SaxSessionContext sessionContext)
		{
			SessionContext = sessionContext;
			User = new UserData(SessionContext, null, null);
		}
		/// <summary>
		/// Primary constructor - on user login.
		/// <para>SessionContext and UserAccount must be supplied.</para>
		/// <para>Roles list is optional.</para>
		/// </summary>
		protected SaxSessionData(SaxSessionContext sessionContext, SaxUserAccount userAccount, List<SaxUserRole> userRoles)
		{
			SessionContext = sessionContext;
			User = new UserData(SessionContext, userAccount, userRoles);
		}

		//-------------------------------------------------------------------
		// Properties.
		public SaxSessionContext SessionContext { get; }
		[JsonIgnore]
		public bool ValidUserSession { get { return SysId.IsValid(User.UserAccountId) && SysId.IsValid(User.UserAccountId); } }
		[JsonIgnore]
		public DbUpdateInfo DbUpdateInfo
		{
			get
			{
				return new DbUpdateInfo(User.UserAccountId, StringUtil.OnEmpty(User.DisplayName, User.EmailAddress), SaxSystem.ComputerName);
			}
		}

		//-------------------------------------------------------------------
		// User.
		public class UserData
		{
			protected UserData() { }
			public UserData(SaxSessionContext sessionContext, SaxUserAccount userAccount, List<SaxUserRole> userRoles)
			{
				if (userAccount != null)
				{
					UserAccountId = userAccount.Id;
					FirstName = userAccount.FirstName;
					LastName = userAccount.LastName;
					DisplayName = userAccount.GetDisplayName();
					EmailAddress = userAccount.EmailAddress;
					if (sessionContext.Application == Sax.Application.Admin)
						KeepLoggedIn = userAccount.KeepLoggedIn_Admin;
					else if (sessionContext.Application == Sax.Application.Online)
						KeepLoggedIn = userAccount.KeepLoggedIn_Online;
					else Debugger.Break();

					if (userRoles != null)
					{
						foreach (SaxUserRole userRole in userRoles.FindAll(item => item.IsStatusActive))
							roles.Add(new RoleData(userRole));
					}
				}
			}
			public SysId UserAccountId { get; protected set; }
			public String FirstName { get; protected set; }
			public String LastName { get; protected set; }
			public String DisplayName { get; protected set; }
			public String EmailAddress { get; protected set; }
			public bool KeepLoggedIn { get; protected set; }
			public bool UserAccountSupplied { get; protected set; }
			// Roles.
			public class RoleData
			{
				private RoleData() { }
				public RoleData(SaxUserRole userRole)
				{
					if (userRole != null)
					{
						Role = userRole.UserRole;
						Status = userRole.Status;
					}
				}
				public Sax.UserRole Role { get; protected set; }
				public SaStatus Status { get; protected set; }
			}
			[JsonIgnore]
			private readonly List<RoleData> roles = new List<RoleData>();
			public List<RoleData> Roles { get { return new List<RoleData>(roles); } protected set { roles.Clear(); roles.AddRange(value); } }
			/// <summary>User - JSON deserialisation route.</summary>
			protected void SetRoles(List<RoleData> roles)
			{
				if (this.roles.Count > 0)
					throw new NotSupportedException("Session Data Roles cannot be replaced.");
				this.roles.AddRange(roles);
			}
			[JsonIgnore]
			public bool IsJournalist { get { return roles?.Exists(item => item.Role == Sax.UserRole.Journalist) ?? false; } }
		}
		public UserData User { get; private set; }
		/// <summary>User - JSON deserialisation route.</summary>
		protected void SetUser(UserData user)
		{
			if (User != null && User.UserAccountSupplied)
				throw new NotSupportedException("Session Data User cannot be replaced.");
			User = user;
		}

		//-------------------------------------------------------------------
	}
	//=======================================================================
}