/*Checks to see if there are any new pics in the results returned from facebook, if yes, they are added to the database, otherwise return true "All Pics Added"
*/
private Boolean SortPictures(PicturePlaceObject results, PicturePlaceDb db)
{
Boolean addedAllPics = true;
foreach (var pic in results.data) //loop through all the Pics in results.data
{
if (pic.place != null && pic.place.location != null) //Only add Pics that have a place/location from results
{
var placeId = db.data.Select(id => id.id); //COLLECTION OF ALL THE IDS IN THE DATABASE
//check to see if the collection of ids already contains the new id, if not a new pic is found etc.
if (!placeId.Contains(pic.id))
{
addedAllPics = false;
StorePicture(pic, db);
}
}
}
return(addedAllPics);
}
/*Method keeps sending get requets to facebook api using paging, untill all pictures have been added
*/
private async void GetAllFbPic(PicturePlaceObject results, PropertySet parameters, string endpoint, PicturePlaceDb db)
{
Boolean addedAllPics = false;
do //only do this while there is a next page and all pics have not been added
{
addedAllPics = SortPictures(results, db); //Add Results to a list
if (addedAllPics == false)
{
parameters.Remove("after"); //Remove previous parameters
parameters.Add("after", results.paging.cursors.after); //the next page to send the request too
FBSingleValue value = new FBSingleValue(endpoint, parameters, DeserializeJson.FromJson); //send the request and get back a JSON responce
FBResult graphResult = await value.GetAsync(); //check to see if the Requets Succeeded
results = graphResult.Object as PicturePlaceObject;
}
} while ((results.paging != null || results.data.Count() != 0) && addedAllPics == false);
PaintPins(db);
}
/*On Successful login, send GET request to FB endpoint with params and DeserializeJson the results into objects/Dictonary
*/
private async void OnSuccessLogin()
{
string endpoint = "/me/photos";//where the url starts from
PropertySet parameters = new PropertySet();
parameters.Add("fields", "source,place"); //Required fields needed
FBSingleValue value = new FBSingleValue(endpoint, parameters, DeserializeJson.FromJson); //send the request and get back a JSON responce
FBResult graphResult = await value.GetAsync();
if (graphResult.Succeeded)//check to see if the Request Succeeded
{
PicturePlaceObject results = graphResult.Object as PicturePlaceObject;
var db = new PicturePlaceDb();
GetAllFbPic(results, parameters, endpoint, db);
}
else
{
MessageDialog dialog = new MessageDialog("Try Again Later!");
await dialog.ShowAsync();
}
}