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package export;
import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.FileWriter; import java.io.IOException; import java.io.InputStreamReader; import java.io.Reader; import java.net.HttpURLConnection; import java.net.URL; import java.nio.charset.Charset; import java.nio.charset.StandardCharsets; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; import java.util.zip.ZipEntry; import java.util.zip.ZipOutputStream;
import javax.net.ssl.HttpsURLConnection;
import org.json.simple.JSONArray; import org.json.simple.JSONObject; import org.json.simple.parser.JSONParser; import org.json.simple.parser.ParseException;
public class Main { public static final String baseUrl = "https://www.strava.com/api/v3/"; private static int athleteId = 0; private static JSONParser parser = new JSONParser(); private static String testRequest; private static File errorFile; private static void writeError(String text) { if(errorFile==null) { errorFile = new File("error_"+System.currentTimeMillis()+".txt"); } try(BufferedWriter bout = new BufferedWriter(new FileWriter(errorFile, true))) { bout.write(text); bout.newLine(); } catch (IOException e) { } } /** * For testing: ensures the test requests are used * @param testrequest Request to be used */ static void setTest(String testrequest) { testRequest=testrequest; } /** * Saves the data of one athlete into a temp file and returns it. * @param token Identifier / authorization token of the athlete * @return created temp file */ @SuppressWarnings("unchecked") static File oneAthlete(String token) { // get Activities
Map<String, JSONObject> activities = getActivities(token);
// for each activity: save streams
JSONArray allActivities = new JSONArray(); int simpleActivityId=0; for (String id: activities.keySet()) { JSONObject data = addStreams(id, activities.get(id), token); data.put("activity_id", simpleActivityId); allActivities.add(data); simpleActivityId++; } // get general information
JSONObject athleteInfo = saveGeneralInformation(token); athleteInfo.put("activities", allActivities); try { File temp = File.createTempFile("Athlete_" +athleteId , ".json"); temp.deleteOnExit(); BufferedWriter bw = new BufferedWriter(new FileWriter(temp)); bw.write(athleteInfo.toString()); bw.close(); return temp; } catch (IOException e) { writeError("Athlete "+athleteId+": Error writing temp file: "+e.toString()); } return null; } /** * Adds the streams to the given activity * @param id Strava id of the activity * @param data general information of the activity * @param token Identifier / authorization token of the athlete * @return The data with the added streams */ @SuppressWarnings("unchecked") static JSONObject addStreams(String id, JSONObject data, String token) { //TODO: Array representation is not tested
String requestUrlExtension = "activities/"+id+"/streams?keys=[time, distance, latlng, altitude, " + "velocity_smooth, heartrate, cadence, watts, temp, moving, grade_smooth]&key_by_type="; String json = makeOneRequest(requestUrlExtension, token); String type = "type"; Object obj; try { obj = parser.parse(json); JSONArray listOfStreams = (JSONArray) obj; for (int i=0; i<listOfStreams.size(); i++) { JSONObject oneStream = (JSONObject) listOfStreams.get(i); data.put("stream_"+oneStream.get(type).toString(), oneStream); } } catch (ParseException | NumberFormatException e) { writeError("Athlete "+athleteId+": Error parsing json (Streams): "+e.toString()); } return data; } /** * Gathers all activities of a user, extracts the general information and the ids. * @param token Identifier / authorization token of the athlete * @return A Map with key = Strava Id of an activity and value = JSONObject with the general information of the activity */ @SuppressWarnings("unchecked") static Map<String, JSONObject> getActivities(String token) { Map<String, JSONObject> result = new HashMap<>(); /* * Possible values = AlpineSki, BackcountrySki, Canoeing, Crossfit, EBikeRide, Elliptical, Golf, * Handcycle, Hike, IceSkate, InlineSkate, Kayaking, Kitesurf, NordicSki, Ride, RockClimbing, * RollerSki, Rowing, Run, Sail, Skateboard, Snowboard, Snowshoe, Soccer, StairStepper, * StandUpPaddling, Surfing, Swim, Velomobile, VirtualRide, VirtualRun, Walk, WeightTraining, * Wheelchair, Windsurf, Workout, Yoga */ String type = "type"; String timezone = "timezone"; String start = "start_date_local"; //Start date measured in users time zone
String id = "id"; int pageIndex = 1; while(true) { String requestExtension = "athlete/activities?before=&after=&page="+pageIndex+"&per_page="; String json = makeOneRequest(requestExtension, token); if (json.isEmpty()||json.isBlank()||json.equals("")) //don't know where the last page is...
{ break; } Object obj; try { obj = parser.parse(json); JSONArray listOfActivites = (JSONArray) obj; for (int i=0; i<listOfActivites.size(); i++) { JSONObject oneActivity = (JSONObject) listOfActivites.get(i);
JSONObject toSave = new JSONObject(); toSave.put(type, oneActivity.get(type)); toSave.put(timezone, oneActivity.get(timezone)); toSave.put(start, oneActivity.get(start)); toSave.put("athlete_id", athleteId); Object idObj = oneActivity.get(id); if(idObj != null) { result.put(oneActivity.get(id).toString(), toSave); } } } catch (ParseException | NumberFormatException e) { writeError("Athlete "+athleteId+": Error parsing json (Activities): "+e.toString()); } pageIndex++; } return result; }
/** * Extracts an athletes general information. * @param token Identifier / authorization token of the athlete * @return extracted data or null if there was an error */ @SuppressWarnings("unchecked") static JSONObject saveGeneralInformation(String token) { String sex = "sex"; //Possible values = M, F
String country = "country"; String date_pref = "date_preference"; String meas_pref = "measurement_preference"; //Possible values = feet, meters
String weight = "weight"; String json = makeOneRequest("athlete", token); JSONObject toSave = new JSONObject(); try { Object obj = parser.parse(json); JSONObject data = (JSONObject) obj; toSave.put(sex, data.get(sex)); toSave.put(country, data.get(country)); toSave.put(date_pref, data.get(date_pref)); toSave.put(meas_pref, data.get(meas_pref)); toSave.put(weight, data.get(weight)); toSave.put("id", athleteId); return toSave; } catch (ParseException e) { writeError("Athlete "+athleteId+": Error parsing general information."); return null; } } /** * Zip a list of files in one .zip file. * @param files HasMap of <intended Filename, File> which should be zipped * @throws IOException If there was an error zipping */ static void zipAllFiles(Map<String,File> files) throws IOException { FileOutputStream fos = new FileOutputStream("data.zip"); ZipOutputStream zipOut = new ZipOutputStream(fos); for (String key : files.keySet()) { File fileToZip = files.get(key); FileInputStream fis = new FileInputStream(fileToZip); ZipEntry zipEntry = new ZipEntry(key); zipOut.putNextEntry(zipEntry);
byte[] bytes = new byte[1024]; int length; while((length = fis.read(bytes)) >= 0) { zipOut.write(bytes, 0, length); } fis.close(); } zipOut.close(); fos.close(); } /** * Handles one request to the API * @param requestUrlExtension Extension for the baseUrl (without '/') * @param token Identification / authorization token of the athlete * @return The response as a String, an empty String in case of error. */ static String makeOneRequest(String requestUrlExtension, String token) { //TODO: http requests are not tested
if(testRequest!= null) { String varTestRequest = testRequest.replaceAll("\\:\\s*([0-9]{15,})\\,", ":\"$1\","); testRequest=null; return varTestRequest; } HttpURLConnection connection = null; StringBuilder result = new StringBuilder(); try { //Create connection
URL url = new URL(baseUrl+requestUrlExtension); connection = (HttpsURLConnection) url.openConnection(); connection.setRequestMethod("GET"); connection.setRequestProperty("Authorization", "Bearer [["+token+"]]"); int responseCode = connection.getResponseCode(); if (responseCode != HttpURLConnection.HTTP_OK) { writeError("Wrong response code: "+responseCode); return ""; } try (Reader reader = new BufferedReader( new InputStreamReader(connection.getInputStream(), Charset.forName(StandardCharsets.UTF_8.name())))) { int c = reader.read(); while (c != -1) { result.append((char) c); c = reader.read(); } } } catch(IOException e) { writeError("Error while handling request: "+e.toString()); return ""; } //Numbers too long for int or long are turned into Strings
return result.toString().replaceAll("\\:\\s*([0-9]{15,})\\,", ":\"$1\","); }
public static void main(String[] args) { //TODO: tokens need to be added by Enduco
List<String> tokens = new ArrayList<>(); //TODO: Should we expect problems with memory??
Map<String,File> allFiles = new HashMap<>(); for (String token : tokens) { File athlete = oneAthlete(token); if(athlete != null) { allFiles.put("Athlete_"+athleteId+".json", athlete); } athleteId++; } try { zipAllFiles(allFiles); } catch (IOException e) { writeError("Files coulnd't be zipped"); } } }
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