public static bool GetUserInfo(User user, UserStorageContext storage)
{
// set up the FB API context
FBGraphAPI fbApi = new FBGraphAPI();
UserCredential cred = user.GetCredential(UserCredential.FacebookConsent);
if (cred != null && cred.AccessToken != null)
{
fbApi.AccessToken = cred.AccessToken;
}
else
{
TraceLog.TraceError(TRACE_NO_FB_TOKEN);
return false;
}
// store user information from Facebook in UserProfile
UserProfile userProfile = storage.ClientFolder.GetUserProfile(user);
if (userProfile == null)
{
TraceLog.TraceError("Could not access UserProfile to import Facebook information into.");
return false;
}
try
{ // import information about the current user
// using foreach because the Query API returns an IEnumerable, but there is only one result
foreach (var userInfo in fbApi.Query("me", FBQueries.BasicInformation))
{
// import FacebookID
userProfile.FacebookID = (string)userInfo[FBQueryResult.ID];
// import name if not already set
if (userProfile.FirstName == null)
userProfile.FirstName = (string)userInfo["first_name"];
if (userProfile.LastName == null)
userProfile.LastName = (string)userInfo["last_name"];
// import picture if not already set
if (userProfile.Picture == null)
userProfile.Picture = String.Format("https://graph.facebook.com/{0}/picture", userProfile.FacebookID);
// import birthday if not already set
if (userProfile.Birthday == null)
userProfile.Birthday = (string)userInfo[FBQueryResult.Birthday];
// import gender if not already set
if (userProfile.Gender == null)
userProfile.Gender = (string)userInfo[FBQueryResult.Gender];
// import geolocation if not already set
if (userProfile.GeoLocation == null)
userProfile.GeoLocation = (string)((FBQueryResult)userInfo[FBQueryResult.Location])[FBQueryResult.Name];
TraceLog.TraceInfo("Imported Facebook information into UserProfile");
}
}
catch (Exception ex)
{
TraceLog.TraceException("Facebook query for basic User information failed", ex);
return false;
}
return true;
}
public static bool AddContactInfo(UserStorageContext userContext, Item item)
{
FieldValue fbfv = item.GetFieldValue(FieldNames.FacebookID);
if (fbfv == null)
return true;
User user = userContext.GetUser(item.UserID, true);
if (user == null)
return false;
// set up the FB API context
FBGraphAPI fbApi = new FBGraphAPI();
UserCredential cred = user.GetCredential(UserCredential.FacebookConsent);
if (cred != null && cred.AccessToken != null)
{
fbApi.AccessToken = cred.AccessToken;
}
else
{
TraceLog.TraceError(TRACE_NO_FB_TOKEN);
return false;
}
// get or create an EntityRef in the UserFolder EntityRefs list
var entityRefItem = userContext.UserFolder.GetEntityRef(user, item);
if (entityRefItem == null)
{
TraceLog.TraceError(TRACE_NO_CONTACT_ENTITYREF);
return false;
}
try
{ // get the Contact information from Facebook
// using foreach because the Query API returns an IEnumerable, but there is only one result
foreach (var contact in fbApi.Query(fbfv.Value, FBQueries.BasicInformation))
{
item.GetFieldValue(FieldNames.Picture, true).Value = String.Format("https://graph.facebook.com/{0}/picture", fbfv.Value);
var birthday = (string)contact[FBQueryResult.Birthday];
if (birthday != null)
item.GetFieldValue(FieldNames.Birthday, true).Value = birthday;
var gender = (string)contact[FBQueryResult.Gender];
if (gender != null)
entityRefItem.GetFieldValue(FieldNames.Gender, true).Value = gender;
}
userContext.SaveChanges();
}
catch (Exception ex)
{
TraceLog.TraceException(TRACE_NO_SAVE_FBCONTACTINFO, ex);
return false;
}
return true;
}
private Status GenerateSuggestions(WorkflowInstance workflowInstance, ServerEntity entity, Dictionary<string, string> suggestionList)
{
Item item = entity as Item;
if (item == null)
{
TraceLog.TraceError("Entity is not an Item");
return Status.Error;
}
// make sure the subject was identified - if not move the state forward
string subjectItem = GetInstanceData(workflowInstance, ActivityVariables.Contact);
if (subjectItem == null)
return Status.Complete;
// set up the FB API context
FBGraphAPI fbApi = new FBGraphAPI();
// get the current user
User user = UserContext.GetUser(item.UserID, true);
if (user == null)
{
TraceLog.TraceError("Could not find the user associated with item " + item.Name);
return Status.Error;
}
UserCredential cred = user.GetCredential(UserCredential.FacebookConsent);
if (cred != null && cred.AccessToken != null)
{
fbApi.AccessToken = cred.AccessToken;
}
else
{ // user not having a FB token is not an error condition, but there is no way to generate suggestions
// just move forward from this state
return Status.Complete;
}
Item subject = null;
try
{
subject = JsonSerializer.Deserialize<Item>(subjectItem);
// if the subjectItem is a reference, chase it down
while (subject.ItemTypeID == SystemItemTypes.Reference)
{
FieldValue refID = subject.GetFieldValue(FieldNames.EntityRef);
Guid refid = new Guid(refID.Value);
subject = UserContext.Items.Include("FieldValues").Single(i => i.ID == refid);
}
}
catch (Exception ex)
{
TraceLog.TraceException("Could not deserialize subject Item", ex);
return Status.Error;
}
FieldValue fbID = subject.GetFieldValue(FieldNames.FacebookID);
if (fbID == null || fbID.Value == null)
{
TraceLog.TraceError(String.Format("Could not find FacebookID for Contact {0}", subject.Name));
return Status.Complete;
}
try
{
// issue the query against the Facebook Graph API
var results = fbApi.Query(fbID.Value, FBQueries.Likes);
foreach (var like in results)
{
string name = (string) like[FBQueryResult.Name];
suggestionList[name] = name;
}
}
catch (Exception ex)
{
TraceLog.TraceException("Error calling Facebook Graph API", ex);
return Status.Complete;
}
return Status.Complete;
}
public override bool ProcessUpdate(Item oldItem, Item newItem)
{
// base handles ItemType changing
if (base.ProcessUpdate(oldItem, newItem))
return true;
if (newItem.Name != oldItem.Name)
{ // name changed, process like new item
ProcessCreate(newItem);
return true;
}
// if the facebook ID is set or changed, retrieve FB info
var fbfv = newItem.GetFieldValue(FieldNames.FacebookID);
if (fbfv != null && fbfv.Value != null)
{
// the old category must not exist or the value must have changed
var oldfbfv = oldItem.GetFieldValue(FieldNames.FacebookID);
if (oldfbfv == null || oldfbfv.Value != fbfv.Value)
{
FBGraphAPI fbApi = new FBGraphAPI();
User userWithCreds = storage.GetUser(user.ID, true);
UserCredential cred = userWithCreds.GetCredential(UserCredential.FacebookConsent);
if (cred != null && cred.AccessToken != null)
{
fbApi.AccessToken = cred.AccessToken;
}
else
{
TraceLog.TraceError(FacebookHelper.TRACE_NO_FB_TOKEN);
return false;
}
// get or create an EntityRef in the UserFolder EntityRefs list
var entityRefItem = storage.UserFolder.GetEntityRef(user, newItem);
if (entityRefItem == null)
{
TraceLog.TraceError(FacebookHelper.TRACE_NO_CONTACT_ENTITYREF);
return false;
}
// get the contact's profile information from facebook
try
{
// this is written as a foreach because the Query API returns an IEnumerable, but there is only one result
foreach (var contact in fbApi.Query(fbfv.Value, FBQueries.BasicInformation))
{
newItem.GetFieldValue(FieldNames.Picture, true).Value = String.Format("https://graph.facebook.com/{0}/picture", fbfv.Value);
var birthday = (string)contact[FBQueryResult.Birthday];
if (birthday != null)
newItem.GetFieldValue(FieldNames.Birthday, true).Value = birthday;
var gender = (string)contact[FBQueryResult.Gender];
if (gender != null)
entityRefItem.GetFieldValue(FieldNames.Gender, true).Value = gender;
}
//userContext.SaveChanges();
}
catch (Exception ex)
{
TraceLog.TraceException(FacebookHelper.TRACE_NO_SAVE_FBCONTACTINFO, ex);
}
return true;
}
}
return false;
}
public static bool PostQuestion(User user, UserStorageContext storage, string question)
{
// set up the FB API context
FBGraphAPI fbApi = new FBGraphAPI();
UserCredential cred = user.GetCredential(UserCredential.FacebookConsent);
if (cred != null && cred.AccessToken != null)
{
fbApi.AccessToken = cred.AccessToken;
}
else
{
TraceLog.TraceError(TRACE_NO_FB_TOKEN);
return false;
}
try
{
// using foreach because the Post API returns an IEnumerable, but there is only one result
foreach (var result in fbApi.Post("me", FBQueries.Questions, "question=" + question))
{
var id = result[FBQueryResult.ID];
if (id != null)
TraceLog.TraceInfo(String.Format("Posted question {0} to Facebook", id));
else
TraceLog.TraceInfo("Unknown response received for posting question to Facebook");
break;
}
}
catch (Exception ex)
{
TraceLog.TraceException("Posting to Facebook failed", ex);
return false;
}
return true;
}
public static bool ImportFriendsAsPossibleContacts(User user, UserStorageContext userContext)
{
// set up the FB API context
FBGraphAPI fbApi = new FBGraphAPI();
UserCredential cred = user.GetCredential(UserCredential.FacebookConsent);
if (cred != null && cred.AccessToken != null)
{
fbApi.AccessToken = cred.AccessToken;
}
else
{
TraceLog.TraceError(TRACE_NO_FB_TOKEN);
return false;
}
// get or create the list for Contact item types in the UserFolder
Item possibleContactsList = userContext.UserFolder.GetListForItemType(user, SystemItemTypes.Contact);
if (possibleContactsList == null)
{
TraceLog.TraceError("Could not retrieve or create the possible contacts list");
return false;
}
// get the current list of all possible contacts for this user
var currentPossibleContacts = userContext.Items.Include("FieldValues").Where(ps => ps.UserID == user.ID && ps.FolderID == possibleContactsList.FolderID &&
ps.ParentID == possibleContactsList.ID && ps.ItemTypeID == SystemItemTypes.NameValue &&
ps.FieldValues.Any(fv => fv.FieldName == FieldNames.FacebookID)).ToList();
// get the current list of all Items that are Contacts for this user
var currentContacts = userContext.Items.Include("FieldValues").
Where(c => c.UserID == user.ID && c.ItemTypeID == SystemItemTypes.Contact).ToList();
// get all the user's friends and add them as serialized contacts to the possible contacts list
DateTime now = DateTime.UtcNow;
try
{
var results = fbApi.Query("me", FBQueries.Friends).ToList();
TraceLog.TraceInfo(String.Format("Found {0} Facebook friends", results.Count));
foreach (var friend in results)
{
// check if a possible contact by this name and with this FBID already exists - and if so, skip it
if (currentPossibleContacts.Any(
ps => ps.Name == (string)friend[FBQueryResult.Name] &&
ps.FieldValues.Any(fv => fv.FieldName == FieldNames.FacebookID && fv.Value == (string)friend[FBQueryResult.ID])))
continue;
bool process = true;
// check if a contact by this name already exists
var existingContacts = currentContacts.Where(c => c.Name == (string)friend[FBQueryResult.Name]).ToList();
foreach (var existingContact in existingContacts)
{
var fbFV = existingContact.GetFieldValue(FieldNames.FacebookID, true);
if (fbFV.Value == null)
{
// contact with this name exists but no FacebookID, assume same and set the FacebookID
fbFV.Value = (string)friend[FBQueryResult.ID];
var sourcesFV = existingContact.GetFieldValue(FieldNames.Sources, true);
sourcesFV.Value = string.IsNullOrEmpty(sourcesFV.Value) ? Sources.Facebook : string.Concat(sourcesFV.Value, ",", Sources.Facebook);
process = false;
break;
}
if (fbFV.Value == (string)friend[FBQueryResult.ID])
{ // FacebookIDs are same, definitely a duplicate, do not add
process = false;
break;
}
// contact with same name was found but had a different FacebookID, add as a new contact
}
// add contact if not a duplicate
if (process)
{
var contact = new Item()
{
ID = Guid.NewGuid(),
Name = (string)friend[FBQueryResult.Name],
UserID = user.ID,
ItemTypeID = SystemItemTypes.Contact,
FieldValues = new List<FieldValue>(),
};
contact.FieldValues.Add(new FieldValue() { ItemID = contact.ID, FieldName = FieldNames.FacebookID, Value = (string)friend[FBQueryResult.ID] });
contact.FieldValues.Add(new FieldValue() { ItemID = contact.ID, FieldName = FieldNames.Sources, Value = Sources.Facebook });
string jsonContact = JsonSerializer.Serialize(contact);
// store the serialized json contact in the value of a new NameValue item in possible contacts list
var nameValItem = new Item()
{
ID = Guid.NewGuid(),
Name = (string)friend[FBQueryResult.Name],
FolderID = possibleContactsList.FolderID,
ParentID = possibleContactsList.ID,
UserID = user.ID,
ItemTypeID = SystemItemTypes.NameValue,
Created = now,
LastModified = now,
FieldValues = new List<FieldValue>()
};
nameValItem.FieldValues.Add(new FieldValue() { FieldName = FieldNames.Value, ItemID = nameValItem.ID, Value = jsonContact });
// add the FacebookID as a fieldvalue on the namevalue item which corresponds to the possible contact, for easier duplicate detection
nameValItem.FieldValues.Add(new FieldValue() { FieldName = FieldNames.FacebookID, ItemID = nameValItem.ID, Value = (string)friend[FBQueryResult.ID] });
// add new possible subject to the storage and to the working list of possible contacts
userContext.Items.Add(nameValItem);
currentPossibleContacts.Add(nameValItem);
}
}
userContext.SaveChanges();
TraceLog.TraceInfo(String.Format("Added {0} possible contacts to list", results.Count));
}
catch (Exception ex)
{
TraceLog.TraceException("Could not retrieve or create a new possible Contact", ex);
return false;
}
return true;
}