Uber.swift

//
//  Uber.swift
//
//  Created by Kirby Shabaga on 9/9/14.
//  Modified by Rodolfo Antonici on 14/6/15 at GetIn.
//  Copyright (c) 2014 Worxly. All rights reserved.
//
//

import CoreLocation
import Foundation
import UIKit

class Uber {
    
    // To get your client key, go to https://developer.uber.com
    let clientKey = "YOUR_CLIENT_KEY_HERE"
    
    // If you don't set up a location, Uber will open the current user location as pickup location
    var pickupLocation : CLLocationCoordinate2D?
    
    
    // optional properties
    var pickupNickname : String?
    var pickupFormattedAddress : String?
    
    var dropoffLocation : CLLocationCoordinate2D?
    var dropoffNickname : String?
    var dropoffFormattedAddress : String?
    
    // -------------------------------------------------------------------
    // init with optional property
    // -------------------------------------------------------------------
    init(pickupLocation : CLLocationCoordinate2D?) {
        self.pickupLocation = pickupLocation
    }
    
    // -------------------------------------------------------------------
    // perform a deep link to the Uber App if installed
    // check all optional properties while construcing the URL
    // -------------------------------------------------------------------
    func deepLink() {
        if let uberURL = self.constructURL() {
            var sharedApp = UIApplication.sharedApplication()
            println(uberURL)
            sharedApp.openURL(uberURL)
        }
    }
    
    private func constructURL() -> NSURL? {
        
        let uberProtocol = "uber://"
        let httpsProtocol = "https://m.uber.com/"
        
        var uberString = Uber.isUberAppInstalled() ? uberProtocol : httpsProtocol
        uberString += "?client_id=\(clientKey)"
        uberString += "&action=setPickup"
        if let unwrapedPickupLocation = self.pickupLocation {
            
            uberString += "&pickup[latitude]=\(unwrapedPickupLocation.latitude)"
            uberString += "&pickup[longitude]=\(unwrapedPickupLocation.longitude)"
        }
        else {
            uberString += "&pickup=my_location"
        }
        
        uberString += self.pickupNickname == nil ? "" :
        "&pickup[nickname]=\(self.pickupNickname!)"
        
        uberString += self.pickupFormattedAddress == nil ? "" :
        "&pickup[formatted_address]=\(self.pickupFormattedAddress!)"
        
        if self.dropoffLocation != nil {
            uberString += "&dropoff[latitude]=\(self.dropoffLocation!.latitude)"
            uberString += "&dropoff[longitude]=\(self.dropoffLocation!.longitude)"
        }
        
        uberString += self.dropoffNickname == nil ? "" :
        "&dropoff[nickname]=\(self.dropoffNickname!)"
        
        uberString += self.dropoffFormattedAddress == nil ? "" :
        "&dropoff[formatted_address]=\(self.dropoffFormattedAddress!)"
        
        if let urlEncodedString = uberString.stringByAddingPercentEscapesUsingEncoding(NSUTF8StringEncoding) {
            return NSURL(string: urlEncodedString)
        } else {
            return nil
        }
    }
    
    // -------------------------------------------------------------------
    // check if the Uber App is installed on the device
    // -------------------------------------------------------------------
    class func isUberAppInstalled() -> Bool {
        var sharedApp = UIApplication.sharedApplication()
        let uberProtocol = NSURL(string: "uber://")
        
        return sharedApp.canOpenURL(uberProtocol!)
    }
    
}