Created
June 7, 2015 11:09
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Export Foursquare checkins to GPX
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| // | |
| // main.swift | |
| // ForsquareGPX | |
| // | |
| // Created by Dzianis Lebedzeu on 07/06/2015. | |
| // Copyright (c) 2015 Home. All rights reserved. | |
| // | |
| import Foundation | |
| let token = "YOUR_FORSQUARE_TOKEN" | |
| var checkins = [NSDictionary]() | |
| let limit = 250 | |
| func iso8601Formatter() -> NSDateFormatter { | |
| let formatter = NSDateFormatter() | |
| formatter.locale = NSLocale(localeIdentifier: "en_US_POSIX") | |
| formatter.dateFormat = "yyyy'-'MM'-'dd'T'HH':'mm':'ss'Z'" | |
| return formatter | |
| } | |
| func escapeXML(xml: String) -> String { | |
| return CFXMLCreateStringByEscapingEntities(kCFAllocatorDefault, xml, nil) as String | |
| } | |
| func checkinsURLWithOffset(offset: Int) -> NSURL { | |
| let path = "https://api.foursquare.com/v2/users/self/checkins" | |
| let urlComponents = NSURLComponents(string: path)! | |
| let dateFormatter = NSDateFormatter() | |
| dateFormatter.dateFormat = "YYYYMMDD" | |
| urlComponents.queryItems = [ | |
| NSURLQueryItem(name: "oauth_token", value: token), | |
| NSURLQueryItem(name: "v", value: dateFormatter.stringFromDate(NSDate())), | |
| NSURLQueryItem(name: "limit", value: "\(limit)"), | |
| NSURLQueryItem(name: "offset", value: "\(offset)")] | |
| return urlComponents.URL! | |
| } | |
| func fetchCheckins(offset: Int) { | |
| println("fetching checkins with offset: \(offset)") | |
| let task = NSURLSession.sharedSession().dataTaskWithURL(checkinsURLWithOffset(offset)) { (data, urlResponse, error) -> Void in | |
| if let error = error { | |
| println(error.localizedDescription) | |
| exit(1) | |
| } | |
| var jsonError: NSError? | |
| let json = NSJSONSerialization.JSONObjectWithData(data, options: NSJSONReadingOptions.allZeros, error: &jsonError) as? NSDictionary | |
| if let json = json { | |
| if let serverError = json.valueForKeyPath("meta.errorDetail") as? String { | |
| println(serverError) | |
| return | |
| } | |
| let items = json.valueForKeyPath("response.checkins.items") as? [NSDictionary] | |
| let count = json.valueForKeyPath("response.checkins.count") as? Int | |
| if let items = items, count = count { | |
| if (offset < count) { | |
| checkins += items | |
| fetchCheckins(offset + limit) | |
| } else { | |
| writeCheckinsToGPX(checkins) | |
| } | |
| } | |
| } else if let jsonError = jsonError { | |
| println(jsonError.localizedDescription) | |
| exit(1) | |
| } | |
| } | |
| task.resume() | |
| } | |
| func writeCheckinsToGPX(checkins: [NSDictionary]) { | |
| let formatter = iso8601Formatter() | |
| let now = formatter.stringFromDate(NSDate()) | |
| var xml = "<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\" ?>\n" + | |
| "<gpx xmlns=\"http://www.topografix.com/GPX/1/1\" xmlns:gpxx=\"http://www.garmin.com/xmlschemas/GpxExtensions/v3\" xmlns:gpxtpx=\"http://www.garmin.com/xmlschemas/TrackPointExtension/v1\" creator=\"Oregon 400t\" version=\"1.1\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.topografix.com/GPX/1/1 http://www.topografix.com/GPX/1/1/gpx.xsd http://www.garmin.com/xmlschemas/GpxExtensions/v3 http://www.garmin.com/xmlschemas/GpxExtensionsv3.xsd http://www.garmin.com/xmlschemas/TrackPointExtension/v1 http://www.garmin.com/xmlschemas/TrackPointExtensionv1.xsd\">\n" + | |
| "<metadata>" + | |
| "<link href=\"http://www.foursquare.com\">" + | |
| "<text>Foursquare Checkins</text>" + | |
| "</link>" + | |
| "<time>\(now)</time>" + | |
| "</metadata>" + "\n" | |
| for checkin in checkins { | |
| if let name = checkin.valueForKeyPath("venue.name") as? String, | |
| let lat = checkin.valueForKeyPath("venue.location.lat") as? Double, | |
| let lon = checkin.valueForKeyPath("venue.location.lng") as? Double, | |
| let time = checkin.valueForKeyPath("createdAt") as? Double { | |
| let date = NSDate(timeIntervalSince1970: time) | |
| xml += "\n<trk><name>\(escapeXML(name))</name><trkseg><trkpt lat=\"\(lat)\" lon=\"\(lon)\"><time>\(formatter.stringFromDate(date))</time></trkpt></trkseg></trk>" | |
| } | |
| } | |
| xml += "\n" | |
| xml += "</gpx>" | |
| println("writing data to GPX file...") | |
| var error: NSError? | |
| xml.writeToFile("foursquare.gpx", atomically: true, encoding: NSUTF8StringEncoding, error: &error) | |
| assert( error == nil, "Failed to write GPX.") | |
| println("Done.") | |
| exit(0) | |
| } | |
| fetchCheckins(0) | |
| dispatch_main() // TODO: Any better solutions for async console execution? |
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