| public static WriteInformation ( string message ) : void | ||
| message | string | The message to write to the Debug.log file |
| return | void | |
public static bool DownloadImage(string targetDirectory, string sourceUrl)
{
if (targetDirectory == null)
{
throw new ArgumentNullException("targetDirectory");
}
if (sourceUrl == null)
{
throw new ArgumentNullException("sourceUrl");
}
try
{
using (var client = new WebClient())
{
client.DownloadFile(sourceUrl, targetDirectory);
}
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Image download completed");
}
return(true);
}
catch (Exception ex)
{
ExceptionManager.WriteException(ex);
return(false);
}
}
private void imagesMenuItem_Click(object sender, EventArgs e)
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Images option selected.");
}
var processHelper = new ProcessHelper();
processHelper.BackgroundLoading(TestInternetConnection);
processHelper.Start();
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Checking internet connectivity");
}
//Present the message that an internet connection is required
if (!_internetAvailable)
{
MessageBox.Show(Resources.InternetRequiredMessage, Resources.InternetRequiredTitle, MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
var imagesForm = new ImagesForm();
imagesForm.ShowDialog();
UpdateControlContent();
}
public static bool UpdateIsAvailable()
{
//Read in the XML file
var configDocument = new XmlDocument();
try
{
configDocument.Load(ServerConfigFilePath);
}
catch (Exception ex)
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("An error occurred while checking for the update.");
}
ExceptionManager.WriteException(ex);
return(false);
}
//Extract configuration/applicationSettings/NasaPicOfDay.Properties.Settings/setting
var settingNode =
configDocument.SelectSingleNode(
"/configuration/applicationSettings/NasaPicOfDay.Properties.Settings/setting[@name='CurrentVersion']/value");
if (settingNode == null)
{
return(false);
}
var versionStrings = settingNode.InnerText.Split('.');
Int32.TryParse(versionStrings[0], out _serverMajorVersion);
Int32.TryParse(versionStrings[1], out _serverMinorVersion);
Int32.TryParse(versionStrings[2], out _serverBuildNumber);
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation(string.Format("Application version on GIT {0}.{1}.{2}", _serverMajorVersion, _serverMinorVersion, _serverBuildNumber));
ExceptionManager.WriteInformation(string.Format("Application version on this machine {0}.{1}.{2}", GlobalVariables.CurrentMajorVersion, GlobalVariables.CurrentMinorVersion, GlobalVariables.CurrentBuildNumber));
}
//Compare against global variables for version
if (GlobalVariables.CurrentMajorVersion < _serverMajorVersion)
{
//Update is required
return(true);
}
//Need to check other fields
if (GlobalVariables.CurrentMinorVersion < _serverMinorVersion)
{
//Update is required
return(true);
}
//Need to check the other fields
return(GlobalVariables.CurrentBuildNumber < _serverBuildNumber);
}
private void settingsMenuItem_Click(object sender, EventArgs e)
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Settings option selected.");
}
var settingForm = new SettingsForm();
settingForm.ShowDialog();
}
public PicofDay()
{
InitializeComponent();
try
{
//Creating a timer to retrieve the latest image once a day.
//We did it this way to avoid setting up a scheduled task on the user's machine.
_appTimer = new Timer();
//Checking for updates at 12 p.m. EST (GMT-5) everyday
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Checking the system time for 12 p.m. EST update.");
}
//Setting the current UTC time
DateTime utcNow = DateTime.UtcNow;
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation(string.Format("Current UTC time is [Hours:{0}, Minutes:{1}, Seconds:{2}]", utcNow.Hour, utcNow.Minute, utcNow.Second));
}
DateTime updateTime = new DateTime(DateTime.UtcNow.Year, DateTime.UtcNow.Month, DateTime.UtcNow.Day, 17, 0, 0);
//Get the amount of time between now and 12 p.m. EST
TimeSpan timeUntilEst12Pm = utcNow - updateTime;
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation(string.Format("Time until 12 p.m. EST [Hours:{0}, Minutes:{1}, Seconds:{2}]", Math.Abs(timeUntilEst12Pm.Hours), Math.Abs(timeUntilEst12Pm.Minutes), Math.Abs(timeUntilEst12Pm.Seconds)));
}
//set the interval for the timer
_appTimer.Interval = Math.Abs((int)timeUntilEst12Pm.TotalMilliseconds);
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation(string.Format("Next update will occur in [Hours:{0}, Minutes:{1}, Seconds:{2}]", Math.Abs(timeUntilEst12Pm.Hours), Math.Abs(timeUntilEst12Pm.Minutes), Math.Abs(timeUntilEst12Pm.Seconds)));
}
_appTimer.Tick += appTimer_Tick;
//Launch the main part of the data retrieval
LoadApplicationContent();
//Start the application timer
_appTimer.Start();
}
catch (Exception ex)
{
ExceptionManager.WriteException(ex);
}
}
private void btnSaveSettings_Click(object sender, EventArgs e)
{
//Save Settings
Settings.Default.LoggingEnabled = chkBoxLogging.Checked;
GlobalVariables.LoggingEnabled = chkBoxLogging.Checked;
Settings.Default.Save();
Settings.Default.Reload();
MessageBox.Show(Resources.SettingSaved, Resources.Saved, MessageBoxButtons.OK);
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("##################################\tLogging is Enabled\t##################################");
}
else
{
ExceptionManager.WriteInformation("##################################\tLogging is Disabled\t##################################");
}
}
public static bool InternetAccessIsAvailable()
{
const string url = "http://www.nasa.gov";
try
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Building internet connectivity request.");
}
WebRequest myRequest = WebRequest.Create(url);
//a 10 second timeout to limit the request attempt
myRequest.Timeout = 10000;
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Starting request.");
}
using (WebResponse myResponse = myRequest.GetResponse())
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation(myResponse.ToString());
}
myResponse.Close();
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Request completed.");
}
return(true);
}
}
catch (WebException wex)
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation(string.Format("Error occurred checking internet connection:\t{0}", wex.Message));
}
ExceptionManager.WriteException(wex);
return(false);
}
}
private void updateMenuItem_Click(object sender, EventArgs e)
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Update has been requested.");
}
var processHelper = new ProcessHelper();
processHelper.BackgroundLoading(TestInternetConnection);
processHelper.Start();
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Checking internet connectivity");
}
if (!_internetAvailable)
{
MessageBox.Show(Resources.InternetRequiredMessage, Resources.InternetRequiredTitle, MessageBoxButtons.OK, MessageBoxIcon.Information);
return;
}
UpdateContent();
}
/// <summary>
/// Set the desktop to the current picture of the day
/// <param name="fileName">Full file path to the image to set as the desktop background.</param>
/// </summary>
public void SetDesktopBackground(string fileName)
{
try
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Preparing to change desktop background");
}
SystemParametersInfo(SpiSetdeskwallpaper, 0, fileName, SpifUpdateinifile);
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Completed desktop background change");
}
}
catch (Exception ex)
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("An error occurred updating the desktop background.");
}
ExceptionManager.WriteException(ex);
}
}
static void Main()
{
//Checking to see if logging is enabled.
GlobalVariables.LoggingEnabled = Settings.Default.LoggingEnabled;
GlobalVariables.GetApplicationVersion();
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Application starting.");
}
//Checking to see if the application is running
if (Mutex.WaitOne(TimeSpan.Zero, true))
{
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Checking internet connection.");
}
if (!NetworkHelper.InternetAccessIsAvailable())
{
MessageBox.Show(Resources.InternetRequiredMessage, Resources.InternetRequiredTitle, MessageBoxButtons.OK, MessageBoxIcon.Information);
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("No internet connection. Application exiting.");
}
Environment.Exit(Environment.ExitCode);
}
else
{
//Application is not currently running and there is an available internet connection
//Check for updates
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Checking for application update.");
}
if (ApplicationUpdater.UpdateIsAvailable())
{
//Kick off the updater
var dlgResult = MessageBox.Show(Resources.UpdateQuestion, Resources.AnUpdateIsAvailable,
MessageBoxButtons.YesNo);
if (dlgResult == DialogResult.Yes)
{
//Need the 'runas' verb to allow admin privileges for update
var startInfo = new ProcessStartInfo("Updater.exe")
{
Verb = "runas"
};
Process.Start(startInfo);
}
else
{
Application.Run(new PicofDay());
}
}
else
{
Application.Run(new PicofDay());
}
}
}
else
{
//If application is already running and there is no internet connection available, close the application
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Application is already running. But there is no internet connection. Exiting the application.");
}
if (!NetworkHelper.InternetAccessIsAvailable())
{
MessageBox.Show(Resources.InternetRequiredMessage, Resources.InternetRequiredTitle, MessageBoxButtons.OK, MessageBoxIcon.Information);
Application.ExitThread();
}
}
}
/// <summary>
/// Overloaded GetImage that allows the retrieval of previous images based on their position in the XML document
/// provided from the nasa.gov website.
/// </summary>
/// <param name="selectedOffset">Position of the image within the node list of images, 1 being the very first (newest)</param>
/// <param name="selectedPage">Page number to retrieve the page that contains the selected image.</param>
public BackgroundImage GetImage(int?selectedOffset, int?selectedPage)
{
try
{
if (!NetworkHelper.InternetAccessIsAvailable())
{
throw new Exception("Attempted to retrieve image, but internet connection was not available.");
}
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Retrieving system screen resolution");
}
GetCurrentScreenResolution();
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation(string.Format("System screen resolution is: {0}", _currentScreenResolution));
}
if (selectedOffset == null)
{
selectedOffset = DefaultimageOffset;
}
//Get the JSON string data
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Preparing to download image information");
}
var nasaImages = JsonHelper.DownloadSerializedJsonData(string.Format(NasaLatestImagesUrl, selectedPage));
if (nasaImages == null || nasaImages.UberNodes.Length == 0)
{
throw new Exception("Unable to retrieve image data from JSON request");
}
//Get the image node
var imageId = nasaImages.UberNodes[(int)selectedOffset].UberNodeId;
var currentImageFullUrl = string.Format("{0}{1}.json", NasaApiUrl, imageId);
var currentImage = JsonHelper.DownloadImageData(currentImageFullUrl);
if (currentImage == null)
{
throw new Exception(string.Format("Unable to retrieve selected image: {0}", currentImageFullUrl));
}
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation("Selecting image based on current screen resolution");
}
switch (_currentScreenResolution)
{
case "100x75":
case "226x170":
currentImageFullUrl = string.Format("{0}{1}", NasaImageBaseUrl, currentImage.ImageData[0].LrThumbnail);
break;
case "346x260":
case "360x225":
case "466x248":
case "430x323":
currentImageFullUrl = string.Format("{0}{1}", NasaImageBaseUrl, currentImage.ImageData[0].Crop1X1);
break;
case "800x600":
currentImageFullUrl = string.Format("{0}{1}", NasaImageBaseUrl, currentImage.ImageData[0].Crop2X1);
break;
default:
currentImageFullUrl = string.Format("{0}{1}", NasaImageBaseUrl, currentImage.ImageData[0].FullWidthFeature);
break;
}
var localImageFolderPath = string.Format("{0}\\NASA\\PicOfTheDay", Environment.GetFolderPath(Environment.SpecialFolder.MyPictures));
if (!Directory.Exists(localImageFolderPath))
{
Directory.CreateDirectory(localImageFolderPath);
}
var imageName = currentImage.ImageData[0].FileName;
//Setting the full local image path to save the file
var fullImagePath = string.Format("{0}\\{1}", localImageFolderPath, imageName);
//Download the current image
if (GlobalVariables.LoggingEnabled)
{
ExceptionManager.WriteInformation(string.Format("Preparing to download image: {0}", currentImageFullUrl));
}
if (!DownloadHelper.DownloadImage(fullImagePath, currentImageFullUrl))
{
throw new Exception("Error downloading current image.");
}
//Create BackgroundImage object
var backgroundImage = new BackgroundImage
{
ImageUrl = currentImageFullUrl,
ImageDate = Convert.ToDateTime(currentImage.UberData.PromoDateTime),
ImageDescription = StripHtml(currentImage.UberData.Body),
DownloadedPath = fullImagePath,
ImageTitle =
!string.IsNullOrEmpty(currentImage.ImageData[0].Title)
? currentImage.ImageData[0].Title
: currentImage.UberData.Title
};
return(backgroundImage);
}
catch (Exception ex)
{
ExceptionManager.WriteException(ex);
return(null);
}
}
