using System;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Ink;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Collections.ObjectModel;
using Juick.Classes;
using RestSharp;

namespace Juick.ViewModels
{
    public class AppViewModel : ViewModelBase
    {
        private ObservableCollection<PageViewModel> _pages;
        public ObservableCollection<PageViewModel> Pages 
        {
            get 
            {
                if (_pages == null)
                    _pages = new ObservableCollection<PageViewModel>();
                return _pages;
            }            
        }

        static readonly string IsDataLoadingPropertyName = ExpressionHelper.GetPropertyName<AppViewModel>(x => x.IsDataLoading);
        bool isDataLoading;

        public bool IsDataLoading
        {
            get { return isDataLoading; }
            set
            {
                isDataLoading = value;
                NotifyPropertyChanged(IsDataLoadingPropertyName);
                foreach (var page in Pages)
                {
                    page.LoadMessagesPageCommand.NotifyCanExecuteChanged();
                }
            }
        }

        private AccountManager _acc;

        public AccountManager Account
        {
            get { return _acc ?? (_acc = new AccountManager()); }
        }

        private RestClient _cl;
        public RestClient Client
        {
            get
            {
                return _cl ?? (_cl = new RestClient("http://api.juick.com")
                {
                    UserAgent = "Juick 1.1/Windows Phone " + Environment.OSVersion.Version
                });
            }
        }

    }
}