using System;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Linq;
using System.Text.RegularExpressions;
using MahTweets.Mango.Core;
using MahTweets.Mango.Core.Models;
using MahTweets.Mango.Core.Services;
using MahTweets.Mango.Models;
using MahTweets.Mango.ViewModels.Status;
using WindowsPhoneMVC;
using WindowsPhoneMVC.ActionResults;

namespace MahTweets.Mango.Controllers
{
    public class StatusController : Controller
    {
        private readonly IConnectionManager _connectionManager;
        private readonly Func<IEnumerable<AccountRegistration>> _accounts;

        public StatusController(IConnectionManager connectionManager, Func<IEnumerable<AccountRegistration>> accounts)
        {
            _connectionManager = connectionManager;
            _accounts = accounts;
        }

        public PageResult Compose(StatusUpdate replyTo)
        {
            var words = replyTo.Text.Split(' ');

            var additionalContacts = words.Where(w => w.StartsWith("@")).Aggregate(string.Empty, (current, w) => current + (" " + w));

            additionalContacts = replyTo.Accounts.Aggregate(additionalContacts, (current, account) => Regex.Replace(current, " @" + account.AccountName, "", RegexOptions.IgnoreCase));

            var tweetText = string.Format("@{0} {1}", replyTo.Contact.Name, additionalContacts.Trim());

            var composeViewModel = new ComposeViewModel(
                new ObservableCollection<AccountRegistration>(_accounts()), replyTo.Accounts, replyTo.Id, tweetText);

            return Page(composeViewModel);
        }

        public ActionResult Compose()
        {
            return Page(new ComposeViewModel(new ObservableCollection<AccountRegistration>(_accounts())));
        }

        public ActionResult SendStatusUpdate(IEnumerable<AccountCredentials> accountCredentials, string text, string id)
        {
            foreach (var connection in _connectionManager.GetConnections<IMicroblogConnection>(accountCredentials))
            {
                connection.NewStatusUpdate(text, id, null);
            }

            //TODO don't go back if status update fails..
            return Back();
        }
    }
}