Noting also possibility of uploading the JPG to Google Cloud Storage as well; i think it would involve changing these lines:

image-sequencer-app/src/api/v2/util/process-multisequencer.js

Lines 66 to 79 in 744b521

    
           var html = `<html>` 
        
           html += `<img width="100%" src= "${out}">` 
        
           html += `</html>` 
        
           fs.writeFileSync(path.join(__dirname, `../../../../temp/export${pid}.html`), html); 
        
           mapknitterBucket.upload(path.join(__dirname, `../../../../temp/export${pid}.html`), { 
        
               gzip: true 
        
           }).then(() => { 
        
               mapknitterBucket 
        
                   .file(`export${pid}.html`) 
        
                   .makePublic(); 
        
               fs.unlinkSync(path.join(__dirname, `../../../../temp/export${pid}.html`)); 
        
               mapknitterBucket.file(`export${pid}.html`) 
        
                   .getMetadata() 
        
                   .then((data) => changeStatus("uploaded", data[0].mediaLink));

I guess it would be, instead, something like (ref):

       var data = out.replace(/^data:image\/\w+;base64,/, ""); // strip off the data: url prefix to get just the base64-encoded bytes
       var buf = new Buffer(data, 'base64');
       var filename = `export${pid}.jpg`
       var imgPath = path.join(__dirname, `../../../../temp/${filename}`);
       fs.writeFileSync(imgPath, buf);
       mapknitterBucket.upload(imgPath, {
            gzip: true
        }).then(() => {
            mapknitterBucket
                .file(filename)
                .makePublic();
            fs.unlinkSync(path.join(__dirname, imgPath));
            mapknitterBucket.file(filename)
                .getMetadata()
                .then((data) => changeStatus("uploaded", data[0].mediaLink));

	var html = `<html>`
	html += `<img width="100%" src= "${out}">`
	html += `</html>`
	fs.writeFileSync(path.join(__dirname, `../../../../temp/export${pid}.html`), html);
	mapknitterBucket.upload(path.join(__dirname, `../../../../temp/export${pid}.html`), {
	gzip: true
	}).then(() => {
	mapknitterBucket
	.file(`export${pid}.html`)
	.makePublic();
	fs.unlinkSync(path.join(__dirname, `../../../../temp/export${pid}.html`));
	mapknitterBucket.file(`export${pid}.html`)
	.getMetadata()
	.then((data) => changeStatus("uploaded", data[0].mediaLink));

Ability to specify a data-url response (or just a JPG) instead of HTML wrapping a data-url #36

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