//-------------------------------------------------------------
//By: Ryan Moe
//Edited Last:
private void addNewAlbum_backend(generic_callback guiCallback, SimpleAlbumData albumData)
{
ErrorReport errorReport = new ErrorReport();
//get a new uid for the new album.
albumData.UID = util_getNextUID(_albumsDatabase, "album", 1);
//add the album to the memory database.
util_addAlbumToAlbumDB(errorReport, albumData);
//if adding to the album database failed
if (errorReport.reportID == ErrorReport.FAILURE)
{
guiCallback(errorReport);
return;
}
//save to disk.
saveAlbumsXML_backend(null);
guiCallback(errorReport);
}
// Commenting this out, its functionality has been merged with util_getNextUID()
// to replicate: util_getNextUID(_albumsDatabase, "album", 1)
//------------------------------------------------------
//By: Ryan Moe
//Edited Last:
//Returns a new VALID uid for a new album.
//NOTE: this is the slow way of doing it, but
// it does not leave holes in the uids.
// Ex: if an album is deleted, we reuse it's uid
// when a new album is added.
//RETURNS -1 if there was a problem getting a new uid.
//private int util_getNewAlbumUID(ErrorReport error)
//{
// int newUID = 1;
// Boolean uidNotFound = true;
// while (uidNotFound && newUID < UID_MAX_SIZE)
// {
// try
// {
// //if one or more (hope not more!) uid's are found
// //to match our testing uid, then incriment the testing
// //uid and try again.
// (from c in _albumsDatabase.Elements("album")
// where (int)c.Attribute("uid") == newUID
// select c).First();
// ++newUID;
// }
// //we found a unique one!
// catch
// {
// uidNotFound = false;
// }
// }//while
// if (newUID < UID_MAX_SIZE)
// return newUID;
// return -1;
//}
//-------------------------------------------------------------------
//By: Ryan Moe
//Edited Last:
//add an album to the database in memory ONLY.
private void util_addAlbumToAlbumDB(ErrorReport errorReport, SimpleAlbumData albumData)
{
//make sure the album database is valid.
if (!util_checkAlbumDatabase(errorReport))
{
return;
}
//construct the object we will be adding to the database.
XElement newAlbum = new XElement("album",
new XAttribute("uid", albumData.UID),
new XElement("albumName", albumData.albumName),
new XElement("albumPhotos"));
//add to the database in memory.
_albumsDatabase.Add(newAlbum);
}
//-----------------------------------------------------------------
// By: Bill Sanders, based on Ryan Moe's earlier function
// last edited: 3/24/13
/// <summary>
/// Retrieves a list of all albums in the albums.xml file, sent back via the callback.
/// </summary>
/// <param name="guiCallback">The callback to send the data back to the GUI</param>
private void getAllAlbums_backend(getAllAlbumNames_callback guiCallback)
{
ErrorReport error = new ErrorReport();
// Ensure the database is valid before proceeding
if (!util_checkAlbumDatabase(error))
{
error.reportID = ErrorReport.FAILURE;
error.description = "The album database was determined to be not valid.";
guiCallback(error, null);
return;
}
// An object to enumerate over the album XML nodes
IEnumerable<XElement> _albumSearchIE;
try
{
// get all the albums
_albumSearchIE = (from c in _albumsDatabase.Elements() select c);
}
catch
{
error.reportID = ErrorReport.FAILURE;
error.description = "PhotoBomb.getAllAlbumsByID_backend():Failed at finding albums in the database.";
guiCallback(error, null);
return;
}
foreach (XElement thisAlbum in _albumSearchIE)
{
SimpleAlbumData userAlbum = new SimpleAlbumData();
userAlbum.UID = (int)thisAlbum.Attribute("uid");
try
{
// Throws an exception if there is not exactly one albumName for a given album.
userAlbum.albumName = thisAlbum.Descendants("albumName").Single().Value;
}
catch
{
// This is ugly. If we're upgrading to .net 4.5 anyway we can replace all error code with a tracking class:
// http://msdn.microsoft.com/en-us/library/system.runtime.compilerservices.callermembernameattribute.aspx
error.reportID = ErrorReport.SUCCESS_WITH_WARNINGS;
StringBuilder sb = new StringBuilder();
sb.AppendFormat("{0}.{1} : {2}",
this.GetType().Name,
MethodBase.GetCurrentMethod().Name,
"Found an album with more than one name, or invalid name."
);
error.warnings.Add(sb.ToString());
continue; // We'll keep going if one album is invalid
}
_albumsToReturn.Add(userAlbum);
}
ReadOnlyObservableCollection<SimpleAlbumData> readOnlyAlbumList = new ReadOnlyObservableCollection<SimpleAlbumData>(_albumsToReturn);
guiCallback(error, readOnlyAlbumList);
}
/// By: Ryan Moe
/// Edited Julian Nguyen(4/27/13)
/// <summary>
/// Adds a new album to the album database.
/// </summary>
/// <param name="guiCallback">The callback for the GUI.</param>
/// <param name="albumData">a data class that you need to fill out with the new album's info.
/// NOTE: you don't need to worry about the UID, that gets set in here.</param>
public void addNewAlbum(generic_callback guiCallback, SimpleAlbumData albumData)
{
ErrorReport errReport = null;
errReport = _photoBombDatabase.addNewAlbum_backend(albumData);
guiCallback(errReport);
}
/*********************************************************************************************
* Author: Alejandro Sosa
* parameters:
* return type: void
* purpose:
*********************************************************************************************/
public void guiCreateThisAlbum(string userInput, generic_callback addNewAlbumDelegate)
{
SimpleAlbumData theNewAlbum = new SimpleAlbumData();
theNewAlbum.albumName = userInput;
bombaDeFotos.addNewAlbum(addNewAlbumDelegate, theNewAlbum);
}
//----------------------------------------------
//By: Ryan Moe
//Edited Last:
//
//Adds a new album to the album database.
//PARAM 2 = a data class that you need to fill out with the new album's info.
// NOTE: you don't need to worry about the UID, that gets set in here.
public void addNewAlbum(generic_callback guiCallback, SimpleAlbumData albumData)
{
addNewAlbum_backend(guiCallback, albumData);
}
//-------------------------------------------------------------------
//By: Ryan Moe
//Edited Last:
//add an album to the database in memory ONLY.
private void addAlbumNodeToAlbumsXml__(SimpleAlbumData albumData)
{
//construct the object we will be adding to the database.
XElement newAlbum = new XElement("album",
new XAttribute("uid", albumData.UID),
new XElement("thumbnailPath", new XAttribute("thumbAlbumID", albumData.thumbAlbumID), albumData.thumbnailPath),
new XElement("albumName", albumData.albumName),
new XElement("albumPhotos"));
//add to the database in memory.
_albumsRootXml.Add(newAlbum);
}
/**************************************************************************************************************************
* Author: Ryan Causey
* Created on: 4/3/13
* Function for creating a new album name. Only to be called after the album name is validated.
* @Param: albumName = the name for the new album being created
* Last Edited By:
* Last Edited Date:
**************************************************************************************************************************/
private void guiCreateNewAlbum(String albumName)
{
SimpleAlbumData newAlbum = new SimpleAlbumData();
newAlbum.albumName = albumName;
masterAndCommander.addNewAlbum(new generic_callback(guiCreateNewAlbum_Callback), newAlbum);
}
/// By: Ryan Moe
/// Edited: Julian Nguyen(4/28/13)
/// <summary>
/// This function blows out the existing database(normally due to it being corrupted)
/// and creates a new one, consolidating all the photos into a Recovery Album.
/// </summary>
/// <returns>The error report of this action.</returns>
public ErrorReport rebuildBackendOnFilesystem_backend()
{
ErrorReport errorReport = new ErrorReport();
bool recover = true;
//if the library folder does not exist, we are not recovering because there is nothing to recover. Sorry =(
if (!Directory.Exists(_imagelibraryDirPath))
{
//now make a new library folder
try
{
Directory.CreateDirectory(_imagelibraryDirPath);
}
catch
{
setErrorReportToFAILURE("Unable to create the new library folder.", ref errorReport);
return errorReport;
}
recover = false;
}
createDefaultXML(errorReport);
// Check the XML creation for bugs
if (errorReport.reportStatus == ReportStatus.FAILURE)
{
return errorReport;
}
//Load the new databases into memory.
// BS: These functions are being slated for merging together
_photoBomb_xml.loadXmlRootElement(_albumsXmlPath, out _albumsRootXml);
_photoBomb_xml.loadXmlRootElement(_albumsXmlPath, out _imagesRootXml);
//util_openAlbumsXML(errorReport);
//util_openImagesXML(errorReport);
if (errorReport.reportStatus == ReportStatus.FAILURE)
{
return errorReport;
}
// Not needed, createDefaultXML() saves these.
//saveAlbumsXML_backend();
//saveImagesXML_backend();
//build the backup album and add all the photos to that album if we can
if (recover)
{
addPhotoBackup(errorReport, buildBackupAlbum(errorReport));
}
else
{
SimpleAlbumData firstAlbum = new SimpleAlbumData();
firstAlbum.albumName = "My First Album";
addNewAlbum_backend(firstAlbum);
}
return errorReport;
}
/// By: Bill Sanders, based on Ryan Moe's earlier function.
/// Edited: Julian Nguyen(5/1/13)
/// <summary>
/// Retrieves a list of all albums in the albums.xml file, sent back via the callback.
/// </summary>
/// <param name="readOnlyAlbumList">A passback list of SimpleAlbumData.</param>
/// <returns>The error report of this action.</returns>
public ErrorReport getAllAlbums_backend(out ReadOnlyObservableCollection<SimpleAlbumData> readOnlyAlbumList)
{
ErrorReport error = new ErrorReport();
//clear the collection as we are refreshing it
_albumsCollection.Clear();
//Null for safely.
readOnlyAlbumList = null;
// Ensure the database is valid before proceeding
if (!util_checkAlbumDatabase(error))
{
setErrorReportToFAILURE("The album database was determined to be not valid", ref error);
return error;
}
// An object to enumerate over the album XML nodes
IEnumerable<XElement> _albumSearchIE;
try
{
// get all the albums
_albumSearchIE = (from c in _albumsRootXml.Elements() select c);
}
catch
{
setErrorReportToFAILURE("PhotoBomb.getAllAlbums_backend():Failed at finding albums in the database.", ref error);
return error;
}
foreach (XElement thisAlbum in _albumSearchIE)
{
SimpleAlbumData userAlbum = new SimpleAlbumData();
userAlbum.UID = (Guid)thisAlbum.Attribute("uid");
// Get the thumbnail path...
userAlbum.thumbnailPath = thisAlbum.Element("thumbnailPath").Value;
// An album may legally have an empty thumbnail path (if for example it is empty)...
// Get the idInAlbum of the thumbnail
try
{
userAlbum.thumbAlbumID = Convert.ToInt32(thisAlbum.Element("thumbnailPath").Attribute("thumbAlbumID").Value);
}
catch
{
userAlbum.thumbAlbumID = -1;
}
// Here we're going to check if we need to regenerate the album thumbnail
// First check to make sure the album's thumbnail is NOT set to empty string (an empty album) AND
// Check to see if the file specified by thumbnailPath does NOT exist
if ((userAlbum.thumbnailPath != string.Empty) && (!File.Exists(userAlbum.thumbnailPath)))
{
// if the thumbnail doesn't exist... does the image itself?
XElement thumbnailPhoto = _photoBomb_xml.getAlbumImageNodeFromAlbumXml(userAlbum.UID, userAlbum.thumbAlbumID, _albumsRootXml);
ComplexPhotoData albumImageNodej = _photoBomb_xml.getComplexPhotoDataFromAlbumImageNode(thumbnailPhoto, _imagesRootXml);
if (albumImageNodej == null)
{
setErrorReportToFAILURE("Cannot get complexPhotoData", ref error);
return error;
}
if (!File.Exists(albumImageNodej.fullPath))
{
// if the image does not exist, remove all references of it from the whole DB
util_purgePhotoFromDB(error, ByteArrayToString(albumImageNodej.hash));
}
// get the first photo in the album and set it as the thumbnail
XElement firstAlbumImageNode = (from c in thisAlbum.Descendants("picture") select c).FirstOrDefault();
if (firstAlbumImageNode != null)
{
// ... and set it to be the thumbnail (generating it, if necessary)
util_setAlbumThumbnail(thisAlbum, _photoBomb_xml.getComplexPhotoDataFromAlbumImageNode(firstAlbumImageNode, _imagesRootXml));
}
}
try
{
// Throws an exception if there is not exactly one albumName for a given album.
userAlbum.albumName = thisAlbum.Descendants("albumName").Single().Value;
}
catch
{
// This is ugly. If we're upgrading to .net 4.5 anyway we can replace all error code with a tracking class:
// http://msdn.microsoft.com/en-us/library/system.runtime.compilerservices.callermembernameattribute.aspx
error.reportStatus = ReportStatus.SUCCESS_WITH_WARNINGS;
StringBuilder sb = new StringBuilder();
sb.AppendFormat("{0}.{1} : {2}",
this.GetType().Name,
MethodBase.GetCurrentMethod().Name,
"Found an album with more than one name, or invalid name."
);
error.warnings.Add(sb.ToString());
continue; // We'll keep going if one album is invalid
}
_albumsCollection.Add(userAlbum);
}
readOnlyAlbumList = new ReadOnlyObservableCollection<SimpleAlbumData>(_albumsCollection);
return error;
}
/// By: Ryan Moe
/// Edited Julian Nguyen
/// <summary>
/// Will add a new Album to the database.
/// Note: The UID of the albumData will not be used!!
/// </summary>
/// <param name="albumData">The data for the new album. The UID will not be used.</param>
/// <returns>The error Report of this action.</returns>
public ErrorReport addNewAlbum_backend(SimpleAlbumData albumData)
{
ErrorReport errorReport = new ErrorReport();
//get a new uid for the new album.
albumData.UID = Guid.NewGuid(); //util_getNextUID(_albumsRootXml, "album", "uid", 1);
//add the album to the memory database.
try
{
_photoBomb_xml.addAlbumNodeToAlbumsXml(albumData.UID, albumData.thumbAlbumID, albumData.thumbnailPath, albumData.albumName, _albumsRootXml);
}
catch (NullReferenceException)
{
setErrorReportToFAILURE("Failed to add an album to the albums xml.", ref errorReport);
return errorReport;
}
//need to update the _albumsCollection observableCollection to reflect this addition in the GUI
_albumsCollection.Add(albumData); //adds to end of collection
// Save the albums xml to disk.
return saveAlbumsXML_backend();
}
/*
* Created By: Ryan Causey
* Created Date: 4/4/13
* Last Edited By:
* Last Edited Date:
*/
/// <summary>
/// will clear the existing album collection and create a new Recovery Album
/// and add it to the previously cleared collection.
/// </summary>
/// <param name="errorReport">ErrorReport object to be updated</param>
/// <returns>ErrorReport</returns>
private Guid buildBackupAlbum(ErrorReport errorReport)
{
//empty the existing album collection
_albumsCollection.Clear();
//create the backup album
SimpleAlbumData backupAlbum = new SimpleAlbumData();
//set the name
backupAlbum.albumName = Settings.PhotoLibraryBackupName;
//get a new uid for the new album.
backupAlbum.UID = Guid.NewGuid();
try
{
_photoBomb_xml.addAlbumNodeToAlbumsXml(backupAlbum.UID, backupAlbum.thumbAlbumID, backupAlbum.thumbnailPath, backupAlbum.albumName, _albumsRootXml);
}
catch (NullReferenceException)
{
//if adding to the album database failed
return Guid.Empty;
}
//save to disk.
errorReport = saveAlbumsXML_backend();
if (errorReport.reportStatus == ReportStatus.FAILURE)
return Guid.Empty;
return backupAlbum.UID;
}
