Convert Images To PDF From Uploaded Files - Salesforce
PDF from Images (JPG to PDF and PNG to PDF) sample in Salesforce demonstrating ‘Convert Images To PDF From Uploaded Files’
ImagesToPDF.cls
public class ImagesToPDF {
static String API_KEY = '**********************************';
static String DestinationFileName = 'result';
String[] fileName = new String[] {'image1', 'image2'};
List<String> urlList = new List<String>();
public void startProcessing()
{
try
{
for(String fname : fileName)
{
ContentVersion cv = [select Title, VersionData from ContentVersion where Title = :fname limit 1];
Blob SourceFile = cv.VersionData;
// 1. Prepare URL for "Get Presigned URL" API call
string url = 'https://api.pdf.co/v1/file/upload/get-presigned-url?contenttype=application/octet-stream&name=:fname';
HttpRequest req = new HttpRequest();
req.setHeader('x-api-key', API_KEY);
req.setEndpoint(url);
req.setMethod('GET');
req.setTimeout(60000);
Http http = new Http();
HTTPResponse res = http.send(req);
if(res.getStatusCode() == 200)
{
System.Debug('res ' + res);
Map<String, Object> deserializedBody = (Map<String, Object>)JSON.deserializeUntyped(res.getBody());
Boolean isError = Boolean.ValueOf(deserializedBody.get('error'));
if(isError == false)
{
// Get URL to use for the file upload
String uploadUrl = String.ValueOf(deserializedBody.get('presignedUrl'));
// Get URL of uploaded file to use with later API calls
String uploadedFileUrl = String.ValueOf(deserializedBody.get('url'));
SYstem.debug('uploadedFileUrl :: '+uploadedFileUrl);
// 2. UPLOAD THE FILE TO CLOUD.
if(uploadFile(API_KEY, uploadUrl, SourceFile))
{
urlList.add(uploadedFileUrl);
System.debug('urlList ' + urlList);
//System.assert(false, ' urlList ' + urlList);
}
}
}
else
{
System.debug('Error Response ' + res.getBody());
System.Debug(' Status ' + res.getStatus());
System.Debug(' Status Code' + res.getStatusCode());
System.Debug(' Response String' + res.toString());
}
}
if (urlList.size() > 0)
{
addImageToPDF(urlList);
}
}
catch(Exception ex)
{
String errorBody = 'Message: ' + ex.getMessage() + ' -- Cause: ' + ex.getCause() + ' -- Stacktrace: ' + ex.getStackTraceString();
System.Debug(errorBody);
}
}
@TestVisible
public static boolean uploadFile(String API_KEY, String url, Blob sourceFile)
{
HttpRequest req = new HttpRequest();
req.setHeader('x-api-key', API_KEY);
req.setHeader('Content-Type', 'application/octet-stream');
req.setEndpoint(url);
req.setMethod('PUT');
req.setTimeout(60000);
req.setBodyAsBlob(sourceFile);
Http http = new Http();
HTTPResponse res = http.send(req);
if(res.getStatusCode() == 200)
{
System.Debug(res.getBody());
return true;
}
else
{
System.debug('Error Response ' + res.getBody());
System.Debug(' Status ' + res.getStatus());
System.Debug(' Status Code' + res.getStatusCode());
System.Debug(' Response String' + res.toString());
return false;
}
}
public static void addImageToPDF(List<String> urlList)
{
String SourceFileUrl = String.join(urlList, ', ');
Map<string, Object> parameters = new Map<string, Object>();
parameters.put('name', DestinationFileName);
parameters.put('url', SourceFileUrl);
string jsonPayload = Json.serialize(parameters);
System.debug('jsonPayload = '+jsonPayload);
try
{
string url = 'https://api.pdf.co/v1/pdf/convert/from/image';
HttpRequest req = new HttpRequest();
req.setBody(jsonPayload);
req.setHeader('x-api-key', API_KEY);
req.setHeader('Content-Type', 'application/json');
req.setEndpoint(url);
req.setMethod('POST');
req.setTimeout(60000);
Http http = new Http();
HTTPResponse res = http.send(req);
if(res.getStatusCode() == 200)
{
System.Debug('res ' + res);
Map<String, Object> deserializedBody = (Map<String, Object>)JSON.deserializeUntyped(res.getBody());
String urlVal = (String)deserializedBody.get('url');
downloadPDFAndStore(urlVal, DestinationFileName);
}
else
{
System.debug('Success Response ' + res.getBody());
System.Debug(' Status ' + res.getStatus());
System.Debug(' Status Code ' + res.getStatusCode());
System.Debug(' Status String ' + res.toString());
}
}
catch(Exception ex)
{
String errorBody = 'Message: ' + ex.getMessage() + ' -- Cause: ' + ex.getCause() + ' -- Stacktrace: ' + ex.getStackTraceString();
System.Debug(errorBody);
}
}
@TestVisible
private static void downloadPDFAndStore(String extFileUrl, String DestinationFile)
{
try
{
Http h = new Http();
HttpRequest req = new HttpRequest();
extFileUrl = extFileUrl.replace(' ', '%20');
req.setEndpoint(extFileUrl);
req.setMethod('GET');
req.setHeader('Content-Type', 'application/pdf');
req.setCompressed(true);
req.setTimeout(60000);
// Now Send HTTP Request
HttpResponse res = h.send(req);
if(res.getStatusCode() == 200)
{
blob fileContent = res.getBodyAsBlob();
ContentVersion conVer = new ContentVersion();
conVer.ContentLocation = 'S'; // to use S specify this document is in Salesforce, to use E for external files
conVer.PathOnClient = DestinationFile + '.pdf'; // The files name, extension is very important here which will help the file in preview.
conVer.Title = DestinationFile; // Display name of the files
conVer.VersionData = fileContent;
insert conVer;
System.Debug('Success');
}
else
{
System.debug('Success Response ' + res.getBody());
System.Debug(' Status ' + res.getStatus());
System.Debug(' Status Code' + res.getStatusCode());
System.Debug(' Status String' + res.toString());
}
}
catch(Exception ex)
{
String errorBody = 'Message: ' + ex.getMessage() + ' -- Cause: ' + ex.getCause() + ' -- Stacktrace: ' + ex.getStackTraceString();
System.Debug(errorBody);
}
}
}
ImagesToPDFTest.cls
@isTest
private class ImagesToPdfTest
{
private testmethod static void testaddImageToPDF()
{
List<ContentVersion> cvList = new List<ContentVersion>();
ContentVersion con = new ContentVersion();
con.Title = 'image1';
con.VersionData=Blob.valueOf('images-and-documents');
con.PathOnClient = 'image1.png';
cvList.add(con);
ContentVersion con1 = new ContentVersion();
con1.Title = 'image2';
con1.VersionData=Blob.valueOf('image');
con1.PathOnClient = 'image2.jpg';
cvList.add(con1);
insert cvList;
Test.startTest();
Test.setMock(HttpCalloutMock.class, new ImagesToPdfTest.DocumentCreationMockForUpload());
ImagesToPdf addImageToPdf = new ImagesToPdf();
addImageToPdf.startProcessing();
List<ContentVersion> cv = [select Id from ContentVersion];
Test.stopTest();
System.assertEquals(3, cv.size());
}
public class DocumentCreationMockForUpload implements HttpCalloutMock {
public HTTPResponse respond(HTTPRequest req) {
HttpResponse res = new HttpResponse();
String testBody = '{"presignedUrl":"https://pdf-temp-files.s3-us-west-2.amazonaws.com/0c72bf56341142ba83c8f98b47f14d62/test.pdf?X-Amz-Expires=900&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=AKIAIZJDPLX6D7EHVCKA/20200302/us-west-2/s3/aws4_request&X-Amz-Date=20200302T143951Z&X-Amz-SignedHeaders=host&X-Amz-Signature=8650913644b6425ba8d52b78634698e5fc8970157d971a96f0279a64f4ba87fc","url":"https://pdf-temp-files.s3-us-west-2.amazonaws.com/0c72bf56341142ba83c8f98b47f14d62/test.pdf?X-Amz-Expires=3600&x-amz-security-token=FwoGZXIvYXdzEGgaDA9KaTOXRjkCdCqSTCKBAW9tReCLk1fVTZBH9exl9VIbP8Gfp1pE9hg6et94IBpNamOaBJ6%2B9Vsa5zxfiddlgA%2BxQ4tpd9gprFAxMzjN7UtjU%2B2gf%2FKbUKc2lfV18D2wXKd1FEhC6kkGJVL5UaoFONG%2Fw2jXfLxe3nCfquMEDo12XzcqIQtNFWXjKPWBkQEvmii4tfTyBTIot4Na%2BAUqkLshH0R7HVKlEBV8btqa0ctBjwzwpWkoU%2BF%2BCtnm8Lm4Eg%3D%3D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=ASIA4NRRSZPHEGHTOA4W/20200302/us-west-2/s3/aws4_request&X-Amz-Date=20200302T143951Z&X-Amz-SignedHeaders=host;x-amz-security-token&X-Amz-Signature=243419ac4a9a315eebc2db72df0817de6a261a684482bbc897f0e7bb5d202bb9","error":false,"status":200,"name":"test.pdf","remainingCredits":98145}';
res.setHeader('Content-Type', 'application/json');
res.setBody(testBody);
res.setStatusCode(200);
return res;
}
}
}
PDF.co Web API: the Web API with a set of tools for documents manipulation, data conversion, data extraction, splitting and merging of documents. Includes image recognition, built-in OCR, barcode generation and barcode decoders to decode bar codes from scans, pictures and pdf.