using Microsoft.AspNetCore.Mvc;
using Microsoft.Extensions.Logging;
using Sarand.Net.Standard.Base.Bus;
using Sarand.Net.Standard.Base.Core;
using Sarand.Net.Standard.Base.Dbas;
using Sarand.Net.Standard.Base.Utils;
using Saxonite.Net.Core.Web.Base.App;
using Saxonite.Net.Core.Web.Online.Models;
using Saxonite.Net.Standard.Base.Bus;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;

namespace Saxonite.Net.Core.Web.Online.Controllers
{
	//=======================================================================
	// Online Organisation Controller.
	//=======================================================================
	public partial class OrganisationController : SaxController_Online
	{
		//-------------------------------------------------------------------
		// Construction.
		public OrganisationController(SaxLocaliser localiser, ILogger<HomeController> logger) :
			base(localiser, logger)
		{
		}

		//-------------------------------------------------------------------
		[HttpGet]
		public IActionResult Index()
		{
			// Validate session.
			if (!ValidUserSession)
				return RedirectToAction("", "");

			// No 'Index' view as yet - default to 'Opportunities' view.
			return RedirectToAction("Opportunities", "Organisation");
		}

		//-------------------------------------------------------------------
		[HttpGet]
		public IActionResult Opportunities()
		{
			// Validate session.
			if (!ValidUserSession)
				return RedirectToAction("", "");

			// Model.
			Model_Organisation_Opportunities model = new Model_Organisation_Opportunities(Localiser);

			// Get a suitable organisation for the filter.
			SysId filterOrganisationId = SessionData_Online.Filter.OrganisationIdMember;
			String filterOrganisationCaption = SessionData_Online.Filter.OrganisationCaptionMember;
			OrganisationData organisationData = GetOrganisationForFilter(filterOrganisationId, filterOrganisationCaption);
			if (organisationData == null)
				return RedirectToAction("", "");

			// Make a note of the filter values.
			model.Filter.OrganisationId = SysId.ToString(organisationData.Id);
			model.Filter.OrganisationCaption = organisationData.Caption;
			SessionData_Online.Filter.OrganisationIdMember = organisationData.Id;
			SessionData_Online.Filter.OrganisationCaptionMember = organisationData.Caption;

			return View(model);
		}

		//-------------------------------------------------------------------
		[HttpGet]
		public IActionResult Members()
		{
			// Validate session.
			if (!ValidUserSession)
				return RedirectToAction("", "");

			// Model.
			Model_Organisation_Members model = new Model_Organisation_Members(Localiser);

			// Get a suitable organisation for the filter.
			SysId filterOrganisationId = SessionData_Online.Filter.OrganisationIdMember;
			String filterOrganisationCaption = SessionData_Online.Filter.OrganisationCaptionMember;
			OrganisationData organisationData = GetOrganisationForFilter(filterOrganisationId, filterOrganisationCaption);
			if (organisationData == null)
				return RedirectToAction("", "");

			// Make a note of the filter values.
			model.Filter.OrganisationId = SysId.ToString(organisationData.Id);
			model.Filter.OrganisationCaption = organisationData.Caption;
			SessionData_Online.Filter.OrganisationIdMember = organisationData.Id;
			SessionData_Online.Filter.OrganisationCaptionMember = organisationData.Caption;

			return View(model);
		}

		//-------------------------------------------------------------------
		public class OrganisationData
		{
			public OrganisationData(SysId id) { Id = id; }
			public SysId Id { get; }
			public String Caption { get; set; }
		}
		private OrganisationData GetOrganisationForFilter(SysId filterOrganisationId, String filterOrganisationCaption)
		{
			// Check that user is associated with organisations.
			SaxUserOrganisation.Params prmUserOrganisation = new SaxUserOrganisation.Params();
			prmUserOrganisation.UserAccountIdsIncluded.Add(SessionData.User.UserAccountId);
			prmUserOrganisation.StatusCat = SaxUserOrganisation.StatusCat.ActiveOnly;
			if (AccountMgr.GetUserOrganisationCount(prmUserOrganisation) < 1)
				return null;

			// Filter organisation.
			OrganisationData organisationData = new OrganisationData(filterOrganisationId);
			organisationData.Caption = filterOrganisationCaption;
			if (!SysId.IsValid(filterOrganisationId) || StringUtil.IsEmpty(filterOrganisationCaption))
			{
				// Pick the first Organisation that the user is a member of.
				ColumnDfn colOrganisationId = AccountMgr.GetUserOrganisationColumnDfn(SaxUserOrganisation.Column.OrganisationId);
				ColumnDfn colOrganisationName = AccountMgr.GetUserOrganisationColumnDfn(SaxUserOrganisation.Column.Organisation_Name);
				prmUserOrganisation = new SaxUserOrganisation.Params();
				prmUserOrganisation.UserAccountIdsIncluded.Add(SessionData.User.UserAccountId);
				if (SysId.IsValid(filterOrganisationId))
					prmUserOrganisation.OrganisationIdsIncluded.Add(filterOrganisationId);
				prmUserOrganisation.OrganisationMembersOnly = true;
				prmUserOrganisation.StatusCat = SaxUserOrganisation.StatusCat.ActiveOnly;
				prmUserOrganisation.SortColumns.Add(colOrganisationName);
				prmUserOrganisation.ResultsPaging.PageLength = 1;
				prmUserOrganisation.ResultsPaging.PageNo = 1;
				using (DbResultSet resultSet = AccountMgr.ExecuteUserOrganisationQuery(new List<ColumnDfn>() { colOrganisationId, colOrganisationName }, prmUserOrganisation))
				{
					while (resultSet != null && resultSet.HasRows && resultSet.NextRecord())
					{
						NamedValue.Map values = resultSet.GetRecordValues();
						SysId organisationId = new SysId(values.GetLong(colOrganisationId.DataName));
						if (SysId.IsValid(organisationId))
						{
							organisationData = new OrganisationData(organisationId);
							organisationData.Caption = values.GetString(colOrganisationName.DataName);
							break;
						}
					}
				}
			}
			if (SysId.IsValid(organisationData.Id) && StringUtil.IsEmpty(organisationData.Caption))
			{
				// Organisation has been identified but no caption available as yet.
				using (SaxOrganisation organisation = AccountMgr.GetOrganisationById(organisationData.Id))
				{
					if (organisation != null)
						organisationData.Caption = organisation.Name;
				}
			}
			return organisationData;
		}

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