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Sunil02kumar/Apex Class -BoxAuthController

Last active December 22, 2017 13:43
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Apex Class -BoxAuthController
/*
Author: Sunil Kumar
Purpose: Uploading and Downloading file from BOX
*/
public class BoxAuthController {
//Variables for Oauth
public String Authcode{get;set;}
public String AccessToken{get;set;}
public String RefreshToken{get;set;}
public String clientid{get;set;}
public String client_secret{get;set;}
public String API_Key{get;set;}
public String ViewAPI_Key{get;set;}
public String securitycode;
//Other for Viewing File
public String Response{get;set;} //response from Box.com
public String endPointURL{get;set;}
public String FileViewUrl{get;set;}
public String selectedFolder{get;set;}
//map to store file id and file name present in box
public Map<String,String>folderIdToNameMap=new Map<String,String>();
//Variable to store all folder information in this wrapper
public FoldersInfo folderDetails{get;set;}
//list to dispaly file list in UI
public List<entry> fileList{get;set;}
//variables for file upload
public blob uploadContent{get;set;}
public String uploadFilename{get;set;}
//Constructor
public BoxAuthController(){
Authcode=ApexPages.currentPage().getparameters().get('code');
securitycode=ApexPages.currentPage().getparameters().get('state');
clientid=skforce__Box_com_parameters__c.getValues('Box_sunil02kumar').skforce__client_id__c;
client_secret=skforce__Box_com_parameters__c.getValues('Box_sunil02kumar').skforce__client_secret__c;
ViewAPI_Key=skforce__Box_com_parameters__c.getValues('Box_sunil02kumar').skforce__View_API_Key__c;
AccessToken=skforce__Box_com_parameters__c.getValues('Box_sunil02kumar').skforce__Access_Token__c;
RefreshToken=skforce__Box_com_parameters__c.getValues('Box_sunil02kumar').skforce__Refresh_Token__c;
endPointURL='https://app.box.com/api/oauth2/token?';
folderDetails=new FoldersInfo();
fileList=new List<entry>();
}
//method to fetch files details from folder Response
public void FindFileList(FoldersInfo folderDetails){
fileList=new List<entry>();
if(selectedFolder!=null && selectedFolder!=''){
if(folderDetails.item_collection!=null){
if(folderDetails.item_collection.entries.size()>0){
for(entry en: folderDetails.item_collection.entries){
if(en.type.equalsignorecase('file')){
fileList.add(en);
}
}
}
}
}
}
public List<selectoption> getAllFoldersList(){
List<selectoption> options=new List<selectoption>();
options.add(new selectoption('','--None--'));
if(folderIdToNameMap.size()>0){
for(String ss:folderIdToNameMap.keyset()){
options.add(new selectoption(ss,folderIdToNameMap.get(ss)));
}
}
return options;
}
//Method to get get Authorization code after validating user on Box server
public Pagereference AutorizeBox(){
String endpointUrl1='https://app.box.com/api/oauth2/authorize?response_type=code&client_id='+clientid+'&state=sk02';
pageReference pag=new pageReference(endpointUrl1);
pag.setRedirect(true);
return pag;
}
//Method to find Access Token using AuthCode
public Pagereference FindAccessToken(){
Response='';
system.debug('*******Authcode:'+Authcode);
if(Authcode!=null && Authcode!='' && securitycode=='sk02'){
HttpRequest req = new HttpRequest();
//endPointURL='https://app.box.com/api/oauth2/token?code='+Authcode+'&client_id='+clientid+'&client_secret='+client_secret+'&grant_type=authorization_code';
endPointURL='https://app.box.com/api/oauth2/token?';
System.debug('******endPointURL:'+endPointURL);
req.setEndpoint(endPointURL);
req.setMethod('POST');
req.setHeader('Content-Type','application/x-www-form-urlencoded');
String bb='grant_type=authorization_code';
req.setbody('grant_type=authorization_code'+
'&code='+Authcode+
'&client_id='+clientid+
'&client_secret='+client_secret);
req.setHeader('Accept','application/json');
Http http = new Http();
HTTPResponse res = http.send(req);
Response=res.getBody();
Integer statusCode=res.getStatusCode();
System.debug(Response);
// Parse JSON response to get refresh_token values.
JSONParser parser = JSON.createParser(Response);
while (parser.nextToken() != null) {
if ((parser.getCurrentToken() == JSONToken.FIELD_NAME)){
String fieldName = parser.getText();
parser.nextToken();
if(fieldName == 'access_token') {
AccessToken= parser.getText();
}if(fieldName == 'refresh_token') {
RefreshToken= parser.getText();
}
}
}
//fetch all folders details from BOX account by doing Callout
FindAllAvailableBoxFolders();
//always remeber that don't perform DML before callout
updateBoxCustomSetting();
}
return null;
}
//Update access token and refresh token to custom setting
public void updateBoxCustomSetting(){
try{
List<skforce__Box_com_parameters__c> bx=[SELECT id,skforce__Access_Token__c, skforce__client_id__c, skforce__client_secret__c, skforce__Refresh_Token__c FROM skforce__Box_com_parameters__c
where name='Box_sunil02kumar' limit 1] ;
bx[0].skforce__Access_Token__c=AccessToken;
bx[0].skforce__Refresh_Token__c =RefreshToken;
update bx[0];
}catch(exception e){
system.debug('*********Exception while updating custom setting:'+e.getmessage());
}
}
public PageReference SearchFolders(){
FindAllAvailableBoxFolders();
return null;
}
//This method will do callout and find out all available folders from Box
public void FindAllAvailableBoxFolders(){
Response='';
folderDetails = new FoldersInfo();
fileList=new List<entry>();
//The root folder of a Box account is always represented by the id “0”.
String boxPointURL='https://api.box.com/2.0/folders/0';
Map<String,String>headers=new Map<String,String>();
headers.put('Content-Type','application/x-www-form-urlencoded');
headers.put('Accept','application/json');
headers.put('Authorization','Bearer ' + accessToken);
HTTPRequest req=createHTTPReq('', boxPointURL,'GET',headers);
//do call out to fetch folders details
HTTPResponse res=sendHttpRequest(req);
Response=res.getBody();
System.debug('**Folder Response:'+Response);
//parse JSON response
integer responseStatusCode=res.getStatusCode();
if(responseStatusCode==200){
folderDetails = (FoldersInfo )JSON.deserialize(Response,FoldersInfo.class);
system.debug('********folderDetails :'+folderDetails );
if(folderDetails.item_collection.entries.size()>0){
for(entry en: folderDetails.item_collection.entries){
if(en.type.equalsignorecase('folder')){
folderIdToNameMap.put(en.id,en.name);
}
}
}
}
system.debug('******folderIdToNameMap:'+folderIdToNameMap);
}
//****code to find files present in different folders
public Pagereference FindFilesFromFolder(){
Response='';
FileViewUrl='';
folderDetails = new FoldersInfo();
fileList=new List<entry>();
if(selectedFolder!=null && selectedFolder!=''){
String endpointURLForFiles = 'https://api.box.com/2.0/folders/'+selectedFolder;
system.debug('*******endpointURLForFiles '+endpointURLForFiles );
Map<String,String>headers=new Map<String,String>();
headers.put('Content-Type','application/x-www-form-urlencoded');
headers.put('Accept','application/json');
headers.put('Authorization','Bearer ' + accessToken);
HTTPRequest req=createHTTPReq('', endpointURLForFiles ,'GET',headers);
//Now send request to fetch files details
HTTPResponse res=sendHttpRequest(req);
Response=res.getBody();
System.debug('**Files Response:'+Response);
//parse file response json
folderDetails = (FoldersInfo )JSON.deserialize(Response,FoldersInfo.class);
system.debug('********folderDetails :'+folderDetails );
//find file list from respone to display in ui
FindFileList(folderDetails);
}else{
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.ERROR,'Please select folder.'));
}
return null;
}
//Code to download file from Box
public String selectedFileId{get;set;}
public PageReference ViewFile(){
system.debug('*****selectedFileId:'+selectedFileId);
String fileDownloadUrl='';
String tempDocumentid='';
String fileSessionId='';
if(selectedFileId!=null && selectedFileId!=''){
fileDownloadUrl=FindFileDownloadUrl(selectedFileId);
if(fileDownloadUrl!=null && fileDownloadUrl!=''){
tempDocumentid=FindTempDocumentId(fileDownloadUrl);
}
if(tempDocumentid!=null && tempDocumentid!=''){
fileSessionId=FindSessionIdForViewingFile(tempDocumentid);
while(fileSessionId=='retry'){
fileSessionId=FindSessionIdForViewingFile(tempDocumentid);
}
FileViewUrl='https://view-api.box.com/1/sessions/'+fileSessionId+'/view?theme=dark';
}
}
return null;
}
//method to do call out to find out file download URL
public String FindFileDownloadUrl(String selectedFileId){
String downloadUrl='';
Response='';
if(selectedFileId!=null && selectedFileId!=''){
String endPointURLToViewFile='https://api.box.com/2.0/files/'+selectedFileId+'/content';
Map<String,String>headers=new Map<String,String>();
headers.put('Authorization', 'Bearer ' + accessToken);
headers.put('Content-Type','application/json');
headers.put('Accept','application/json');
HTTPRequest req=createHTTPReq('', endPointURLToViewFile,'GET',headers);
//Now send request to fetch files details
HTTPResponse res=sendHttpRequest(req);
Response=res.getBody();
System.debug('**File Download Response:'+Response);
downloadUrl=res.getHeader('Location');
system.debug('*******downloadUrl='+downloadUrl);
}
return downloadUrl;
}
//method to do call out to find temp Document Id
public String FindTempDocumentId(String downloadUrl){
String documentTempid='';
Response='';
if(downloadUrl!=null && downloadUrl!=''){
String endPointURLForTempDocId='https://view-api.box.com/1/documents';
Map<String,String>headers=new Map<String,String>();
headers.put('Authorization', 'Token ' + ViewAPI_Key);
headers.put('Content-Type','application/json');
headers.put('Accept','application/json');
String reqBody='{"url":"'+downloadUrl+'"}';
HTTPRequest req=createHTTPReq(reqBody, endPointURLForTempDocId, 'GET', headers);
//Now send request to fetch files details
HTTPResponse res=sendHttpRequest(req);
Response=res.getBody();
System.debug('**File temp document id Response:'+Response);
// Parse JSON response to get document id.
/*
{
"type": "document",
"id": "2da6cf9261824fb0a4fe532f94d14625",
"status": "done",
"name": "",
"created_at": "2013-08-30T00:17:37Z",
"modified_at": "2013-08-30T00:17:37Z"
}
*/
JSONParser parser = JSON.createParser(Response);
while (parser.nextToken() != null) {
if ((parser.getCurrentToken() == JSONToken.FIELD_NAME)){
String fieldName = parser.getText();
parser.nextToken();
if(fieldName == 'id') {
documentTempid= parser.getText();
}
}
}
system.debug('*********temp document id:'+documentTempid);
}
return documentTempid;
}
public String FindSessionIdForViewingFile(String documentTempid){
Response='';
String fileViewSessionId='';
if(documentTempid!=null && documentTempid!=''){
String fileSessionIdendPointURL='https://view-api.box.com/1/sessions ';
Map<String,String>headers=new Map<String,String>();
headers.put('Authorization', 'Token ' + ViewAPI_Key);
headers.put('Content-Type','application/json');
headers.put('Accept','application/json');
String reqBody='{"document_id":"'+documentTempid+'"}';
HTTPRequest req=createHTTPReq(reqBody, fileSessionIdendPointURL, 'POST', headers);
//Now send request to fetch files details
HTTPResponse res=sendHttpRequest(req);
Response=res.getBody();
System.debug('**File temp document id Response:'+Response);
Integer statusCode=res.getStatusCode();
System.debug('***statusCode:'+statusCode);
String retryDuration='';
if(statusCode==202){
//The document is not ready for viewing. A Retry-After header will be included in the response indicating the time to wait before trying again.
retryDuration=res.getheader('Retry-After');
system.debug('****retryDuration:'+retryDuration);
//specify fileViewSessionId value as retry if file is not yet ready for viewing
fileViewSessionId='retry';
}else if(statusCode==201){
// Parse JSON response to get document id.
/*
{
"type": "session",
"id": "d1425e031062455f909740bb770b95a7",
"document": {
"type": "document",
"id": "ab0dc2d377524f44a98fd1476343637e",
"status": "processing",
"name": "",
"created_at": "2015-06-19T08:35:09Z"
},
"expires_at": "2015-06-19T09:35:10.020Z",
"urls": {
"view": "https://view-api.box.com/1/sessions/d1425e031062455f909740bb770b95a7/view",
"assets": "https://view-api.box.com/1/sessions/d1425e031062455f909740bb770b95a7/assets/",
"realtime": "https://view-api.box.com/sse/d1425e031062455f909740bb770b95a7"
}
}
*/
String typeId='';
JSONParser parser = JSON.createParser(Response);
while (parser.nextToken() != null) {
if ((parser.getCurrentToken() == JSONToken.FIELD_NAME)){
String fieldName = parser.getText();
parser.nextToken();
String fieldValue=parser.getText();
if(fieldName == 'type' && fieldValue=='session') {
parser.nextToken();
if(parser.getText()=='id'){
parser.nextToken();
fileViewSessionId= parser.getText();
break;
}
}
}
}
system.debug('********typeId:'+typeId);
system.debug('********fileViewSessionId:'+fileViewSessionId);
}
}
return fileViewSessionId;
}
//Method to do call out to Box
public HTTPResponse sendHttpRequest(HTTPRequest req){
Http http = new Http();
HTTPResponse res = http.send(req);
System.debug('****response body:'+res.getBody());
return res;
}
//Method to generate HTTPRequest for call out
public HTTPRequest createHTTPReq(String reqBody, string reqEndPoint, string reqMethod, Map<String,String> headersMap){
HttpRequest req = new HttpRequest();
req.setEndpoint(reqEndPoint);
req.setMethod(reqMethod);
if(reqBody!=null && reqBody!=''){
req.setbody(reqBody);
}
if(headersMap.size()>0){
for(String ss : headersMap.keyset()){
req.setHeader(ss,headersMap.get(ss));
}
}
req.setTimeout(120000);
return req;
}
//apex class structure to deserialize Folder response JSON
public class FoldersInfo{
public String type{get;set;}
public String id{get;set;}
public String sequence_id{get;set;}
public String etag{get;set;}
public String name{get;set;}
public String created_at{get;set;}
public String modified_at{get;set;}
public String item_status{get;set;}
public String description{get;set;}
public itemCollections item_collection{get;set;}
public FoldersInfo(){}
public FoldersInfo(String type,String id,String sequence_id,String etag,String name,String created_at,String modified_at,String description,String item_status ){
this.type=type;
this.id=id;
this.sequence_id=sequence_id;
this.etag=etag;
this.created_at=created_at;
this.modified_at=modified_at;
this.description=description;
this.item_status=item_status;
this.item_collection=new itemCollections();
}
}
public class itemCollections{
public String total_count{get;set;}
public List<entry> entries{get;set;}
public itemCollections(){}
public itemCollections(String count){
this.total_count=count;
this.entries=new list<entry>();
}
}
public class entry{
public String type{get;set;}
public String id{get;set;}
public String name{get;set;}
public entry(String type,String id,String name){
this.type=type;
this.id=id;
this.name=name;
}
}
//code to upload files to BOX.COM
public PageReference uploadFileToBox(){
Response='';
system.debug('****selectedFolder;'+selectedFolder);
if(selectedFolder!=null && selectedFolder!=''){
if(uploadContent!=null){
blob base64EncodeFile=base64EncodeFileContent(uploadContent,uploadFilename);
//blob fileContent=blob.valueof('test String');
//blob base64EncodeFile=BoxUtility.base64EncodeFileContent(fileContent,'First file Upload');
String uploadEndPointURL='https://upload.box.com/api/2.0/files/content?parent_id='+selectedFolder;
String boundary = '----------------------------741e90d31eff';
HttpRequest req = new HttpRequest();
req.setBodyAsBlob(base64EncodeFile);
req.setHeader('Content-Type','multipart/form-data; boundary='+boundary);
req.setHeader('Content-Length',String.valueof(req.getBodyAsBlob().size()));
req.setHeader('Authorization', 'Bearer ' + accessToken);
req.setMethod('POST');
req.setEndpoint(uploadEndPointURL);
req.setMethod('POST');
req.setTimeout(120000);
//Send request to Box
HTTPResponse res=sendHttpRequest(req);
Response=res.getBody();
System.debug('**Files upload Response:'+Response);
Integer uploadStatusCode=res.getStatusCode();
if(uploadStatusCode==201){
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.INFO,'File uploaded successfully.'));
}else{
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.INFO,'Error encountered. Status Code;'+uploadStatusCode));
}
}else{
ApexPages.addMessage(new ApexPages.Message(ApexPages.Severity.INFO,'Please select file.'));
}
}else{
ApexPages.Message myMsg = new ApexPages.Message(ApexPages.Severity.ERROR,'Please select folder.');
ApexPages.addMessage(myMsg);
}
return null;
}
//reference :http://blog.enree.co/2013/01/salesforce-apex-post-mutipartform-data.html
public blob base64EncodeFileContent(Blob file_body, String file_name){
String boundary = '----------------------------741e90d31eff';
String header = '--'+boundary+'\nContent-Disposition: form-data; name="file"; filename="'+file_name+'";\nContent-Type: application/octet-stream';
String footer = '--'+boundary+'--';
String headerEncoded = EncodingUtil.base64Encode(Blob.valueOf(header+'\r\n\r\n'));
while(headerEncoded.endsWith('='))
{
header+=' ';
headerEncoded = EncodingUtil.base64Encode(Blob.valueOf(header+'\r\n\r\n'));
}
String bodyEncoded = EncodingUtil.base64Encode(file_body);
Blob bodyBlob = null;
String last4Bytes = bodyEncoded.substring(bodyEncoded.length()-4,bodyEncoded.length());
if(last4Bytes.endsWith('==')) {
last4Bytes = last4Bytes.substring(0,2) + '0K';
bodyEncoded = bodyEncoded.substring(0,bodyEncoded.length()-4) + last4Bytes;
String footerEncoded = EncodingUtil.base64Encode(Blob.valueOf(footer));
bodyBlob = EncodingUtil.base64Decode(headerEncoded+bodyEncoded+footerEncoded);
} else if(last4Bytes.endsWith('=')) {
last4Bytes = last4Bytes.substring(0,3) + 'N';
bodyEncoded = bodyEncoded.substring(0,bodyEncoded.length()-4) + last4Bytes;
footer = '\n' + footer;
String footerEncoded = EncodingUtil.base64Encode(Blob.valueOf(footer));
bodyBlob = EncodingUtil.base64Decode(headerEncoded+bodyEncoded+footerEncoded);
} else {
footer = '\r\n' + footer;
String footerEncoded = EncodingUtil.base64Encode(Blob.valueOf(footer));
bodyBlob = EncodingUtil.base64Decode(headerEncoded+bodyEncoded+footerEncoded);
}
return bodyBlob;
}
}
Raw
VF Page- Boxauthpage
<apex:page controller="BoxAuthController" action="{!FindAccessToken}" sidebar="false">
<apex:form >
<apex:pageMessages />
<apex:pageblock id="pgbk1">
<apex:pageblockbuttons location="top">
<apex:commandbutton value="Authorize Box" action="{!AutorizeBox}"/>
<apex:commandButton value="Find Folders" action="{!SearchFolders}"/>
</apex:pageblockbuttons>
<apex:pageblocksection >
<apex:pageBlockSectionItem >
<apex:outputLabel value="Client Id" for="ci"/>
<apex:outputtext value="{!clientid}" id="ci"/>
</apex:pageBlockSectionItem>
<apex:pageBlockSectionItem >
<apex:outputLabel value="Client Secret" for="cs"/>
<apex:outputtext value="{!client_secret}" id="cs"/>
</apex:pageBlockSectionItem>
<apex:pageBlockSectionItem >
<apex:outputLabel value="View API Key" for="ak"/>
<apex:outputtext value="{!ViewAPI_Key}" id="ak"/>
</apex:pageBlockSectionItem>
<apex:pageBlockSectionItem >
<apex:outputLabel value="Access token" for="at"/>
<apex:outputtext value="{!AccessToken}" id="at"/>
</apex:pageBlockSectionItem>
<apex:pageBlockSectionItem >
<apex:outputLabel value="Refresh token" for="rt"/>
<apex:outputtext value="{!refreshToken}" id="rt"/>
</apex:pageBlockSectionItem>
</apex:pageblocksection>
</apex:pageblock>
<apex:pageBlock title="Box folder details" id="pgbk2">
<apex:pageblockSection >
<apex:pageBlockSectionItem >
<apex:outputPanel >
<table>
<tr>
<td>Folders</td>
<td>
<apex:selectlist value="{!selectedFolder}" size="1" id="conta">
<apex:selectoptions value="{!AllFoldersList}"/>
<apex:actionSupport action="{!FindFilesFromFolder}" event="onchange"/>
</apex:selectlist>
</td>
</tr>
</table>
<apex:pageblockTable value="{!fileList}" var="eachFile">
<apex:column headerValue="Name" >
<apex:outputText value="{!eachFile.name}" />
</apex:column>
<apex:column headerValue="Folder/File" >
<apex:outputText value="{!eachFile.type}" />
</apex:column>
<apex:column headerValue="Actions" >
<apex:commandLink value="View" action="{!ViewFile}" >
<apex:param value="{!eachFile.id}" assignTo="{!selectedFileId}" id="flid" name="fid"/>
</apex:commandLink>
</apex:column>
</apex:pageblockTable>
<apex:pageblockSection title="Upload File to Box">
<apex:inputFile value="{!uploadContent}" fileName="{!uploadFilename}"></apex:inputFile>
<apex:commandbutton value="Upload" action="{!uploadFileToBox}"/>
</apex:pageblockSection>
</apex:outputPanel>
</apex:pageBlockSectionItem>
<apex:pageBlockSectionItem >
<apex:outputPanel >
<div>
<iframe src="{!FileViewUrl}" style="width: 740px; height: 500px; border-radius: 5px; border: 1px solid #d9d9d9;" allowfullscreen="allowfullscreen"></iframe>
</div>
</apex:outputPanel>
</apex:pageBlockSectionItem>
</apex:pageblockSection>
</apex:pageBlock>
<apex:pageBlock title="Box Response Details" id="pgbk3">
<apex:pageblocksection columns="1">
<apex:pageBlockSectionItem >
<apex:outputLabel value="Response" for="res"/>
<apex:outputtext value="{!Response}" id="res"/>
</apex:pageBlockSectionItem>
</apex:pageblocksection>
</apex:pageBlock>
</apex:form>
</apex:page>
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