// <copyright file="WP7DataCollector.cs" company="Microsoft Corporation">

// Copyright (c) 2010 Microsoft Corporation All Rights Reserved

// </copyright>

// <author>Michael S. Scherotter</author>

// <email>mischero@microsoft.com</email>

// <date>2010-07-19</date>

// <summary>Windows Phone 7 Data collector</summary>



namespace Microsoft.WebAnalytics

{

    using System;

    using System.ComponentModel.Composition;

    using System.Globalization;

    using System.Windows;

    using System.Xml;

    using Microsoft.WebAnalytics.Contracts;



    /// <summary>

    /// Data collector for Windows Phone 7

    /// </summary>

    [Export(typeof(IDataCollector))]

    public class WP7DataCollector : DataCollector, IDisposable

    {

        #region Fields

        /// <summary>

        /// The ProductID application from the Windows Phone App Manifest

        /// </summary>

        private string productId;

        #endregion



        #region Constructors

        /// <summary>

        /// Initializes a new instance of the WP7DataCollector class.

        /// </summary>

        /// <remarks>this constructor is called by MEF</remarks>

        public WP7DataCollector()

        {

        }

        #endregion



        #region Properties

        /// <summary>

        /// Gets the App.ProductID from the Windows Phone WMAppManifest

        /// </summary>

        private string ProductId

        {

            get

            {

                if (string.IsNullOrEmpty(this.productId))

                {

                    this.productId = GetAppAttribute("ProductID");

                }



                return this.productId;

            }

        }



        #endregion



        #region Methods

        /// <summary>

        /// Log an event

        /// </summary>

        /// <param name="logEvent">the event to log</param>

        /// <remarks>This is exported via MEF</remarks>

        [Export("Log")]

        public new void Log(AnalyticsEvent logEvent)

        {

            base.Log(logEvent);

        }



        /// <summary>

        /// Dispose of the GeoCoordinateWatcher

        /// </summary>

        public void Dispose()

        {

            this.Dispose(true);



            GC.SuppressFinalize(this);

        }



        /// <summary>

        /// Dispose of the watcher

        /// </summary>

        /// <param name="managedAndNative">dispose of both managed and native</param>

        protected virtual void Dispose(bool managedAndNative)

        {

            ////if (this.watcher != null)

            ////{

            ////    this.watcher.Dispose();



            ////    this.watcher = null;

            ////}

        }



        ////public bool IsLocationTrackingEnabled

        ////{

        ////    get

        ////    {

        ////        return this.isLocationTrackingEnabled;

        ////    }

        ////    set

        ////    {

        ////        this.isLocationTrackingEnabled = value;



        ////        if (this.isLocationTrackingEnabled)

        ////        {

        ////            if (this.watcher == null)

        ////            {

        ////                this.watcher = new GeoCoordinateWatcher(GeoPositionAccuracy.Default)

        ////                {

        ////                    MovementThreshold = 20

        ////                };



        ////                this.watcher.Start();

        ////            }

        ////        }

        ////        else

        ////        {

        ////            if (this.watcher != null)

        ////            {

        ////                this.watcher.Stop();



        ////                this.watcher.Dispose();



        ////                this.watcher = null;

        ////            }

        ////        }

        ////    }

        ////}



        /// <summary>

        /// Initialize the events and properties

        /// </summary>

        [System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Reliability", "CA2000:Dispose objects before losing scope", Justification = "Object is disposed in Dispose method.")]

        protected override void OnInitialize()

        {

            this.Title = GetAppAttribute("Title");



            this.Version = GetAppAttribute("Version");



            var root = Application.Current.RootVisual as Microsoft.Phone.Controls.PhoneApplicationFrame;



            if (root != null)

            {

                root.Navigated += new System.Windows.Navigation.NavigatedEventHandler(this.OnRootNavigated);



                root.FragmentNavigation += new System.Windows.Navigation.FragmentNavigationEventHandler(this.OnRootFragmentNavigation);

            }

        }



        /// <summary>

        /// attach phone-specific data to each event

        /// </summary>

        /// <param name="logEvent">the logEvent</param>

        protected override void OnLog(AnalyticsEvent logEvent)

        {

            logEvent.EventArgs.Add(new Microsoft.WebAnalytics.Data.PropertyValue { PropertyName = "ProductID", Value = this.ProductId });

            logEvent.DocumentUri = new Uri(this.Title, UriKind.Relative);



            ////if (this.IsLocationTrackingEnabled)

            ////{

            ////    if (this.watcher == null)

            ////    {

            ////        this.OnInitialize();

            ////    }



            ////    if (this.watcher.Status == GeoPositionStatus.Ready)

            ////    {

            ////        var location = string.Format(

            ////            CultureInfo.InvariantCulture,

            ////            "{0},{1}",

            ////            this.watcher.Position.Location.Latitude,

            ////            this.watcher.Position.Location.Longitude);



            ////        logEvent.EventArgs.Add(new Data.PropertyValue { PropertyName = "Location", Value = location });

            ////    }

            ////}

        }



        #endregion



        #region Implementation



        /// <summary>

        /// Gets an attribute from the Windows Phone App Manifest App element

        /// </summary>

        /// <param name="attributeName">the attribute name</param>

        /// <returns>the attribute value</returns>

        private static string GetAppAttribute(string attributeName)

        {

            string appManifestName = "WMAppManifest.xml";

            string appNodeName = "App";



            var settings = new XmlReaderSettings();

            settings.XmlResolver = new XmlXapResolver();



            using (XmlReader rdr = XmlReader.Create(appManifestName, settings))

            {

                rdr.ReadToDescendant(appNodeName);

                if (!rdr.IsStartElement())

                {

                    throw new System.FormatException(appManifestName + " is missing " + appNodeName);

                }



                return rdr.GetAttribute(attributeName);

            }

        }



        /// <summary>

        /// Root Fragment Navigation event handler

        /// </summary>

        /// <param name="sender">the NavigationService</param>

        /// <param name="e">the fragment navigation event arguments</param>

        private void OnRootFragmentNavigation(object sender, System.Windows.Navigation.FragmentNavigationEventArgs e)

        {

            var logEvent = new AnalyticsEvent

            {

                HitType = Data.HitType.PageView,

                Name = "FragmentNavigation",

                ObjectType = sender.GetType().Name

            };



            this.Log(logEvent);

        }



        /// <summary>

        /// Root Navigated event handler

        /// </summary>

        /// <param name="sender"> the NavigationService</param>

        /// <param name="e">the navigation event arguments</param>

        private void OnRootNavigated(object sender, System.Windows.Navigation.NavigationEventArgs e)

        {

            var logEvent = new AnalyticsEvent

            {

                ActionValue = e.Uri.ToString(),

                HitType = Data.HitType.PageView,

                Name = "Navigated",

                ObjectType = sender.GetType().Name

            };



            this.Log(logEvent);

        }



        #endregion

    }

}