using Caliburn.Micro;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using TrackerLibrary;
using TrackerLibrary.Models;

namespace TrackerWPFUI.ViewModels
{
    public class CreateTeamViewModel : Conductor<object>, IHandle<PersonModel>
    {
        private string _teamName = "";
        private BindableCollection<PersonModel> _availableTeamMembers;
        private PersonModel _selectedTeamMemberToAdd;
        private BindableCollection<PersonModel> _selectedTeamMembers = new BindableCollection<PersonModel>();
        private PersonModel _selectedTeamMemberToRemove;
        private bool _selectedTeamMembersIsVisible = true;
        private bool _addPersonIsVisible = false;


        public CreateTeamViewModel()
        {
            AvailableTeamMembers = new BindableCollection<PersonModel>(GlobalConfig.Connection.GetPerson_All());
            EventAggregationProvider.TrackerEventAggregator.Subscribe(this);
        }


        public string TeamName
        {
            get { return _teamName; }
            set
            {
                _teamName = value;
                NotifyOfPropertyChange(() => TeamName);
                NotifyOfPropertyChange(() => CanCreateTeam);
            }
        }

        public bool SelectedTeamMembersIsVisible
        {
            get { return _selectedTeamMembersIsVisible; }
            set
            {
                _selectedTeamMembersIsVisible = value;
                NotifyOfPropertyChange(() => SelectedTeamMembersIsVisible);
            }
        }

        public bool AddPersonIsVisible
        {
            get { return _addPersonIsVisible; }
            set
            {
                _addPersonIsVisible = value;
                NotifyOfPropertyChange(() => AddPersonIsVisible);
            }
        }

        public BindableCollection<PersonModel> AvailableTeamMembers
        {
            get { return _availableTeamMembers; }
            set { _availableTeamMembers = value; }
        }


        public BindableCollection<PersonModel> SelectedTeamMembers
        {
            get { return _selectedTeamMembers; }
            set
            {
                _selectedTeamMembers = value;
                NotifyOfPropertyChange(() => CanCreateTeam);
            }
        }


        public PersonModel SelectedTeamMemberToAdd
        {
            get { return _selectedTeamMemberToAdd; }
            set
            {
                _selectedTeamMemberToAdd = value;
                NotifyOfPropertyChange(() => SelectedTeamMemberToAdd);
                NotifyOfPropertyChange(() => CanAddMember);
            }
        }

        public bool CanAddMember
        {
            get
            {
                return SelectedTeamMemberToAdd != null;
            }
        }

        public void AddMember()
        {
            SelectedTeamMembers.Add(SelectedTeamMemberToAdd);
            AvailableTeamMembers.Remove(SelectedTeamMemberToAdd);
            NotifyOfPropertyChange(() => CanCreateTeam);
        }
        public PersonModel SelectedTeamMemberToRemove
        {
            get { return _selectedTeamMemberToRemove; }
            set
            {
                _selectedTeamMemberToRemove = value;
                NotifyOfPropertyChange(() => SelectedTeamMemberToRemove);
                NotifyOfPropertyChange(() => CanRemoveMember);
            }
        }

        public bool CanRemoveMember
        {
            get
            {
                return SelectedTeamMemberToRemove != null;
            }
        }

        public void RemoveMember()
        {
            AvailableTeamMembers.Add(SelectedTeamMemberToRemove);
            SelectedTeamMembers.Remove(SelectedTeamMemberToRemove);
            NotifyOfPropertyChange(() => CanCreateTeam);
        }

        public void CreateMember()
        {
            ActivateItem(new CreatePersonViewModel());
            SelectedTeamMembersIsVisible = false;
            AddPersonIsVisible = true;
        }
        public bool CanCreateTeam
        {
            get
            {
                if (SelectedTeamMembers != null)
                {
                    if (TeamName.Length > 0 && SelectedTeamMembers.Count > 0)
                    {
                        return true;
                    }
                    else
                    {
                        return false;
                    }
                }
                else
                {
                    return false;
                }
            }
        }

        public void CreateTeam()
        {
            TeamModel t = new TeamModel();
            t.TeamName = TeamName;
            t.TeamMembers = SelectedTeamMembers.ToList();

            GlobalConfig.Connection.CreateTeam(t);

            //TODO - Pass the team back to the parent and close the form
        }

        public void Handle(PersonModel message)
        {
            if (!string.IsNullOrWhiteSpace(message.FullName))
            {
                SelectedTeamMembers.Add(message);
                NotifyOfPropertyChange(() => CanCreateTeam);
            }

            SelectedTeamMembersIsVisible = true;
            AddPersonIsVisible = false;

        }
    }
}