//
// Copyright 2014 Perforce Software Inc.
//

using Newtonsoft.Json;
using System;
using System.Collections.Generic;
using System.IO;
using System.Windows;

namespace Perforce.ViewModel {
    public class LoginFormViewModel : ViewModelBase {

        private LocationItem _selectedLocation;
        private List<LocationItem> _locationItems;
        private string _detailsText;
        private string _usernameText;
        private string _message;

        public void Init(string message = null) {
            _message = message;
            UsernameText = Environment.UserName;
            _locationItems = new List<LocationItem>();
            var configFile = AppDomain.CurrentDomain.BaseDirectory + "hosts.json";

            if (File.Exists(configFile)) {
                var json = File.ReadAllText(configFile);
                _locationItems = JsonConvert.DeserializeObject<List<LocationItem>>(json);
            }

            var prefs = Utility.GetUserPreferences();
            if (!string.IsNullOrEmpty(prefs.LastP4Port)) {
                DetailsText = prefs.LastP4Port;
                Log.Debug(string.Format("LoginFormViewModel: setting DetailsText to {0}", prefs.LastP4Port));
            }
            if (!string.IsNullOrEmpty(prefs.LastP4User)) {
                UsernameText = prefs.LastP4User;
                Log.Debug(string.Format("LoginFormViewModel: setting UsernameText to {0}", prefs.LastP4User));
            }
        }

        public string Message {
            get { return _message; }
            set {
                _message = value;
                OnPropertyChanged("Message");
                OnPropertyChanged("MessageVisibility");
            }
        }

        public Visibility MessageVisibility {
            get {
                return String.IsNullOrEmpty(_message) ? Visibility.Collapsed : Visibility.Visible;
            }
        }

        public LocationItem SelectedLocation {
            get { return _selectedLocation; }
            set {
                _selectedLocation = value;
                OnPropertyChanged("SelectedLocation");
                DetailsText = _selectedLocation.P4Port;
            }
        }

        public List<LocationItem> LocationItems {
            get { return _locationItems; }
            set {
                _locationItems = value;
                OnPropertyChanged("LocationItems");
            }
        }

        public string DetailsText {
            get { return _detailsText; }
            set {
                _detailsText = value;
                OnPropertyChanged("DetailsText");
            }
        }

        public string UsernameText {
            get { return _usernameText; }
            set {
                _usernameText = value;
                OnPropertyChanged("UsernameText");
            }
        }

    }

    public class LocationItem {
        public string Hostname { get; set; }
        public string P4Port { get; set; }
    }
}