Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package edu.morgan.server; import com.google.api.client.auth.oauth2.Credential; import com.google.api.client.googleapis.auth.oauth2.GoogleAuthorizationCodeFlow; import com.google.api.client.googleapis.auth.oauth2.GoogleCredential; import com.google.api.client.googleapis.auth.oauth2.GoogleTokenResponse; import com.google.api.client.googleapis.auth.oauth2.GoogleClientSecrets; import com.google.api.client.http.HttpTransport; import com.google.api.client.http.javanet.NetHttpTransport; import com.google.api.client.json.JsonFactory; import com.google.api.client.json.jackson2.JacksonFactory; import com.google.api.services.drive.Drive; import com.google.api.services.drive.DriveScopes; import com.google.api.services.drive.model.File; import com.google.api.services.drive.model.ParentReference; import edu.morgan.server.student.IncompleteStudent; import edu.morgan.shared.CredentialManager; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; public class GoogleDrive { ///* private static final String CLIENT_ID = "531888765455-d9dq5ldokro9ahi5pjrc56gpolidn35f.apps.googleusercontent.com"; private static final String CLIENT_SECRET = "NGVNLhbRJhUGUVSAJEgrikUx"; private static String REDIRECT_URI = "http://1-dot-morgandrivesu.appspot.com/AppServlet"; private HttpTransport httpTransport; private JsonFactory jsonFactory; private GoogleAuthorizationCodeFlow flow; //*/ private Drive service; private Credential credential; /* CONFIGURATION METHODS */ public GoogleDrive(String code) throws IOException { this.httpTransport = new NetHttpTransport(); this.jsonFactory = new JacksonFactory(); this.flow = new GoogleAuthorizationCodeFlow.Builder(this.httpTransport, this.jsonFactory, CLIENT_ID, CLIENT_SECRET, Arrays.asList(DriveScopes.DRIVE, DriveScopes.DRIVE_APPDATA, DriveScopes.DRIVE_APPS_READONLY, DriveScopes.DRIVE_FILE, DriveScopes.DRIVE_METADATA_READONLY)).setAccessType("offline") .setApprovalPrompt("force").build(); GoogleTokenResponse response = this.flow.newTokenRequest(code).setRedirectUri(REDIRECT_URI).execute(); String accessToken = response.getAccessToken(); credential = new GoogleCredential().setAccessToken(accessToken); this.setService(new Drive.Builder(this.httpTransport, this.jsonFactory, this.credential) .setApplicationName("Admissions GoogleDrive Manager").build()); } /** * @return the service */ public Drive getService() { return service; } /** * @param service the service to set */ public void setService(Drive service) { this.service = service; } /* * * Enhanced methods! Use these! * */ public File getCreateFolder(ArrayList<File> folders, String lastName, String firstName, String studentID) throws IOException { //File folder = this.getStudentFolder(folders, lastName, firstName, studentID); //if(folder == null) File folder = this.makeFolder(lastName, firstName, studentID); return folder; } public File getCreateFolder(ArrayList<File> folders, String folderName) throws IOException { //File folder = this.getStudentFolder(folders, folderName, "", ""); //if(folder == null) File folder = this.makeFolder(folderName, "", ""); return folder; } public ArrayList<File> getAllFolders() throws IOException { return this.retrieveAllFiles("mimeType = 'application/vnd.google-apps.folder'"); } public ArrayList<File> getAllFiles() throws IOException { return this.retrieveAllFiles("mimeType != 'application/vnd.google-apps.folder'"); } public ArrayList<File> getStudentFiles(String lastName, String firstName, String studentID, String checklist) throws IOException { return this.retrieveAllFiles( this.createQueryString(new String[] { lastName, firstName, studentID, checklist }, "fullText") + "and mimeType != 'application/vnd.google-apps.folder'"); } public ArrayList<File> getStudentFiles(String args[]) throws IOException { return this.retrieveAllFiles( this.createQueryString(args, "fullText") + "and mimeType != 'application/vnd.google-apps.folder'"); } public File getStudentFolder(ArrayList<File> folders, String lastName, String firstName, String studentID) { for (File file : folders) { File aux = this.getOneFile(file, new String[] { lastName, firstName, studentID }); if (aux != null) return aux; } return null; } public File MoveFiles(Object fileFrom, Object fileTo, IncompleteStudent student, String codeItem, String checklist) throws IOException { File file, target, copiedFile = new File(); if (fileFrom.getClass().toString().equals("String")) { file = this.getService().files().get((String) fileFrom).execute(); target = this.getService().files().get((String) fileTo).execute(); } else { file = this.getService().files().get(((File) fileFrom).getId()).execute(); target = this.getService().files().get(((File) fileTo).getId()).execute(); } copiedFile.setTitle(this.createFileName(student, codeItem, checklist) + "AUTO"); ParentReference newParent = new ParentReference(); newParent.setSelfLink(target.getSelfLink()); newParent.setParentLink(target.getParents().get(0).getSelfLink()); newParent.setId(target.getId()); newParent.setKind(target.getKind()); newParent.setIsRoot(false); ArrayList<ParentReference> parentsList = new ArrayList<ParentReference>(); parentsList.add(newParent); copiedFile.setParents(parentsList); //file.setParents(parentsList); //return (File) this.getService().files().update(file.getId(), file).execute(); return (File) this.getService().files().copy(file.getId(), copiedFile).execute(); } public File MoveFiles(Object fileFrom, Object fileTo) throws IOException { File file, target = new File(); file = this.getService().files().get(((File) fileFrom).getId()).execute(); target = this.getService().files().get(((File) fileTo).getId()).execute(); ParentReference newParent = new ParentReference(); newParent.setSelfLink(target.getSelfLink()); newParent.setParentLink(target.getParents().get(0).getSelfLink()); newParent.setId(target.getId()); newParent.setKind(target.getKind()); newParent.setIsRoot(false); ArrayList<ParentReference> parentsList = new ArrayList<ParentReference>(); parentsList.add(newParent); file.setParents(parentsList); return (File) this.getService().files().update(file.getId(), file).execute(); } public String createFileName(IncompleteStudent student, String codeItem, String checklist) { String term, retorno = ""; if (student.getTerm().toLowerCase().contains("fall")) { if (student.getTerm().split(" ").length == 2) term = "FA" + student.getTerm().split(" ")[1]; else term = "FA"; } else if (student.getTerm().toLowerCase().contains("summer")) { if (student.getTerm().split(" ").length == 2) term = "SU" + student.getTerm().split(" ")[1]; else term = "SU"; } else if (student.getTerm().toLowerCase().contains("spring")) { if (student.getTerm().split(" ").length == 2) term = "SP" + student.getTerm().split(" ")[1]; else term = "SP"; } else { if (student.getTerm().split(" ").length == 2) term = "WN" + student.getTerm().split(" ")[1]; else term = "WN"; } if (!student.getId().equals("")) retorno = student.getLastName() + "_" + student.getFirstName() + "_" + student.getId() + "_" + term + "_" + codeItem + "_" + checklist + "_"; else retorno = student.getLastName() + "_" + student.getFirstName() + "_" + term + "_" + codeItem + "_" + checklist + "_"; return retorno; } /* * * Private methods * */ private File makeFolder(String LastName, String FirstName, String ID) throws IOException { File body = new File(); if (LastName.equals("AUTO")) body.setTitle(LastName); else body.setTitle(LastName.replaceAll("'", "\\'") + "_" + FirstName.replaceAll("'", "\\'") + "_" + ID.replaceAll("'", "\\'") + "_AUTO".trim()); body.setMimeType("application/vnd.google-apps.folder"); return (File) this.getService().files().insert(body).execute(); } private ArrayList<File> retrieveAllFiles(String queryParameters) throws IOException { return (ArrayList<File>) this.getService().files().list().setQ(queryParameters).execute().getItems(); } private File getOneFile(File file, String args[]) { if (args.length != 0) for (String arg : args) if (!arg.equals("") && !file.getTitle().contains(arg)) { return null; } return file; } private String createQueryString(String args[], String operator) { String execution = ""; if (args.length != 0) for (int index = 0; index < args.length; index++) if (!args[index].equals("")) { //args[index] = args[index].replaceAll("'", "\'"); if (index != 0) execution += "and "; execution += operator + " contains \"" + args[index] + "\" "; } return execution; } }