StripeUtil.swift

import Foundation
import Stripe

class StripeUtil {
    
    var stripeTool = StripeTools()
    var customerId: String?
    
    let defaultSession = NSURLSession(configuration: NSURLSessionConfiguration.defaultSessionConfiguration())
    var dataTask: NSURLSessionDataTask?

    
    //createUser
    func createUser(card: STPCardParams, completion: (success: Bool) -> Void) {
        
        //Stripe iOS SDK will gave us a token to make APIs call possible
        stripeTool.generateToken(card) { (token) in
            if(token != nil) {
                
                //request to create the user
                let request = NSMutableURLRequest(URL: NSURL(string: "https://api.stripe.com/v1/customers")!)
                
                //params array where you can put your user informations
                var params = [String:String]()
                params["email"] = "test@test.test"
                
                //transform this array into a string
                var str = ""
                params.forEach({ (key, value) in
                    str = "\(str)\(key)=\(value)&"
                })
                
                //basic auth
                request.setValue(self.stripeTool.getBasicAuth(), forHTTPHeaderField: "Authorization")
                
                //POST method, refer to Stripe documentation
                request.HTTPMethod = "POST"
                
                request.HTTPBody = str.dataUsingEncoding(NSUTF8StringEncoding)
                
                //create request block
                self.dataTask = self.defaultSession.dataTaskWithRequest(request) { (data, response, error) in
                    
                    //get returned error
                    if let error = error {
                        print(error)
                        completion(success: false)
                    }
                    else if let httpResponse = response as? NSHTTPURLResponse {
                        //you can also check returned response
                        if(httpResponse.statusCode == 200) {
                            if let data = data {
                                let json = try! NSJSONSerialization.JSONObjectWithData(data, options: .AllowFragments)
                                //serialize the returned datas an get the customerId
                                if let id = json["id"] as? String {
                                    self.customerId = id
                                    self.createCard(id, card: card) { (success) in
                                        completion(success: true)
                                    }
                                }
                            }
                        }
                        else {
                            completion(success: false)
                        }
                    }
                }
                
                //launch request
                self.dataTask?.resume()
            }
        }
    }
    
    //create card for given user
    func createCard(stripeId: String, card: STPCardParams, completion: (success: Bool) -> Void) {
        
        stripeTool.generateToken(card) { (token) in
            if(token != nil) {
                let request = NSMutableURLRequest(URL: NSURL(string: "https://api.stripe.com/v1/customers/\(stripeId)/sources")!)
                
                //token needed
                var params = [String:String]()
                params["source"] = token!.tokenId
                
                var str = ""
                params.forEach({ (key, value) in
                    str = "\(str)\(key)=\(value)&"
                })
                
                //basic auth
                request.setValue(self.stripeTool.getBasicAuth(), forHTTPHeaderField: "Authorization")
                
                request.HTTPMethod = "POST"
                
                request.HTTPBody = str.dataUsingEncoding(NSUTF8StringEncoding)
                
                self.dataTask = self.defaultSession.dataTaskWithRequest(request) { (data, response, error) in
                    
                    if let error = error {
                        print(error)
                        completion(success: false)
                    }
                    else if let data = data {
                        let json = try! NSJSONSerialization.JSONObjectWithData(data, options: .AllowFragments)
//                        print(json)
                        completion(success: true)
                    }
                }
                
                self.dataTask?.resume()
            }
        }
        
    }
    
    //get user card list
    func getCardsList(completion: (result: [AnyObject]?) -> Void) {
        
        //request to create the user
        let request = NSMutableURLRequest(URL: NSURL(string: "https://api.stripe.com/v1/customers/\(self.customerId!)/sources?object=card")!)
        
        //basic auth
        request.setValue(self.stripeTool.getBasicAuth(), forHTTPHeaderField: "Authorization")
        
        //POST method, refer to Stripe documentation
        request.HTTPMethod = "GET"
        
        //create request block
        self.dataTask = self.defaultSession.dataTaskWithRequest(request) { (data, response, error) in
            
            //get returned error
            if let error = error {
                print(error)
                completion(result: nil)
            }
            else if let httpResponse = response as? NSHTTPURLResponse {
                //you can also check returned response
                if(httpResponse.statusCode == 200) {
                    if let data = data {
                        let json = try! NSJSONSerialization.JSONObjectWithData(data, options: .AllowFragments)
                        let cardsArray = json["data"] as? [AnyObject]
                        completion(result: cardsArray)
                    }
                }
                else {
                    completion(result: nil)
                }
            }
        }
        
        //launch request
        self.dataTask?.resume()
        
    }

}