using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Windows.Input;
using MahTweets.Mango.Controllers;
using MahTweets.Mango.Core.Models;
using MahTweets.Mango.Models;
using WindowsPhoneMVC;

namespace MahTweets.Mango.ViewModels.Status
{
    public class ComposeViewModel : ViewModelBase
    {
        private readonly ObservableCollection<AccountRegistration> _accounts;
        private readonly string _id;

        public ComposeViewModel(ObservableCollection<AccountRegistration> accounts, IEnumerable<AccountCredentials> fromAccounts, string id, string tweetText)
        {
            _accounts = accounts;
            _id = id;
            SelectedAccounts = new ObservableCollection<AccountRegistration>(accounts.Where(a => fromAccounts.Any(f => f == a.Credentials)));
            Text = tweetText;
            Transient(() => Text);
            SendCommand = Controller<StatusController>().NavigationCommand(c => c.SendStatusUpdate(AccountCredentials, Text, Id));
        }

        public ComposeViewModel(ObservableCollection<AccountRegistration> accounts)
        {
            _accounts = accounts;
            SelectedAccounts = new ObservableCollection<AccountRegistration>(accounts);
            Transient(() => Text);
            SendCommand = Controller<StatusController>().NavigationCommand(c => c.SendStatusUpdate(AccountCredentials, Text, null));
        }

        public IEnumerable<AccountCredentials> AccountCredentials
        {
            get { return SelectedAccounts.Select(s => s.Credentials); }
        }

        public ICommand SendCommand { get; private set; }

        public string Text { get; set; }

        public ObservableCollection<AccountRegistration> SelectedAccounts { get; private set; }

        public ObservableCollection<AccountRegistration> Accounts
        {
            get { return _accounts; }
        }

        public string Id
        {
            get { return _id; }
        }
    }
}