Objective-C to Swift: Facebook iOS API requestUserInfo method - objective-c

Question

Hi I am trying to figure out how to rewrite this in swift:
- (IBAction)requestUserInfo:(id)sender
{
// We will request the user's public picture and the user's birthday
// These are the permissions we need:
NSArray *permissionsNeeded = #[#"public_profile", #"user_birthday", #"email"];
// Request the permissions the user currently has
[FBRequestConnection startWithGraphPath:#"/me/permissions" completionHandler:^(FBRequestConnection *connection, id result, NSError *error) {
if (!error){
// Parse the list of existing permissions and extract them for easier use
NSMutableArray *currentPermissions = [[NSMutableArray alloc] init];
NSLog(#"The fucking class is: %#", [result class]);
NSArray *returnedPermissions = (NSArray *)[result data];
for (NSDictionary *perm in returnedPermissions) {
if ([[perm objectForKey:#"status"] isEqualToString:#"granted"]) {
[currentPermissions addObject:[perm objectForKey:#"permission"]];
}
} // cut cut here
}
EDIT:
I was having trouble trying to get the required data out of the FBGraphObject but figured it out after some further inspection. I have posted the swift version below so that people can just cut and paste it and get on with using swift. Hope it saves someone some time.

Answer 1

Here:
#IBAction func requestUserInfo(sender: AnyObject){
// These are the permissions we need:
var permissionsNeeded = ["public_profile", "user_birthday", "email"]
// Request the permissions the user currently has
FBRequestConnection.startWithGraphPath("/me/permissions", completionHandler: {(connection, result, error) -> Void in
if error == nil{
// Parse the list of existing permissions and extract them for easier use
var theResult = result as? [String:[AnyObject]]
var currentPermissions = [String]()
let returnedPermissions = theResult?["data"] as [[String:String]]
for perm in returnedPermissions {
if perm["status"] == "granted" {
currentPermissions.append(perm["permission"]!)
}
}
// Build the list of requested permissions by starting with the permissions
// needed and then removing any current permissions
println("Needed: \(permissionsNeeded)")
println("Current: \(currentPermissions)")
var requestPermissions = NSMutableArray(array: permissionsNeeded, copyItems: true)
requestPermissions.removeObjectsInArray(currentPermissions)
println("Asking: \(requestPermissions)")
// TODO PUT A POPUP HERE TO TELL WHAT PERMISSIONS WE NEED!
// If we have permissions to request
if requestPermissions.count > 0 {
// Ask for the missing permissions
FBSession.activeSession().requestNewReadPermissions(requestPermissions, completionHandler: {(session, error) -> Void in
if (error == nil) {
// Permission granted, we can request the user information
self.makeRequestForUserData()
} else {
// An error occurred, we need to handle the error
// Check out our error handling guide: https://developers.facebook.com/docs/ios/errors/
println("error: \(error?.description)")
}
})
} else {
// Permissions are present
// We can request the user information
self.makeRequestForUserData()
}
} else {
// An error occurred, we need to handle the error
// Check out our error handling guide: https://developers.facebook.com/docs/ios/errors/
println("error: \(error?.description)")
}
})
}
private func makeRequestForUserData() {
FBRequestConnection.startForMeWithCompletionHandler({(connection, result, error) -> Void in
if (error == nil) {
// Success! Include your code to handle the results here
println("user info: \(result)")
} else {
// An error occurred, we need to handle the error
// Check out our error handling guide: https://developers.facebook.com/docs/ios/errors/
println("error: \(error?.description)")
}
})
}
// Show an alert message
func showMessage(text : NSString, title : NSString){
var alert = UIAlertController(title: title, message: text, preferredStyle: UIAlertControllerStyle.Alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertActionStyle.Default, handler: nil))
UIApplication.sharedApplication().delegate?.window!?.rootViewController?.presentViewController(alert, animated: true, completion: nil)
}