how to include http,fs modules inside node webkit - angularjs

I am creating a simple node web kit app. I have form with input type, on submitting the form i want to save this browsed file into temp folder. How to do this with node web kit.
A sample code will be more help to my studying.

When working with NW you should think in a desktop application workflow, you would not need a server side like creating a http server to receive files, instead you could perform file operations from the 'client' side,
To select the file you could use File dialogs this code explain how to select it and require the fs module to work with it:
<script>
// requiring the fs module
var fs = require('fs');
function chooseFile(name) {
var chooser = document.querySelector(name);
chooser.addEventListener("change", function(evt) {
// this will print the selected file
console.log(this.value);
// from here you could use the fs module required above to do whatever you need with the file, read it or write it
}, false);
chooser.click();
}
chooseFile('#fileDialog');
</script>

Related

Cut video before uploading in Reactjs

I can use ffmpeg in js but how can i use this code in react
const ffmpegPath = require('#ffmpeg-installer/ffmpeg').path
const ffmpeg = require('fluent-ffmpeg')
ffmpeg.setFfmpegPath(ffmpegPath)
ffmpeg('video.mp4')
.setStartTime('00:00:03')
.setDuration('10')
.output('video_out.mp4')
.on('end', function(err) {
if(!err) { console.log('conversion Done') }
})
.on('error', function(err){
console.log('error: ', err)
}).run()
In my understanding, you want to change a video file before uploading it?
I'm afraid this is pretty hard to do in the browser. Browsers usually don't have easy access to the local file system of the computer and have trouble reading and writing to disk.
The code you have included is meant for a node environment. A hint is the use of the required function on line 1 & 2 as node provides this function natively.
My proposed solution would be:
User uploads original (full-length) video to your server through a react app.
Server processes the file (using a node environment and the code that you have copied) and removes the first three seconds. A tutorial on how to receive video uploads in nodejs can be found here: froala nodejs video upload
Server saves the new file & deletes the original
I hope this helps a bit.

How to encode/compress gltf to draco

I want to compress/encode gltf file using draco programatically in threejs with reactjs. I dont want to use any commandline tool, I want it to be done programatically. Please suggest me a solution.
I tried using gltf-pipeline but its not working in client side. Cesium library was showing error when I used it in reactjs.
Yes, this is can be implemented with glTF-Transform. There's also an open feature request on three.js, not yet implemented.
First you'll need to download the Draco encoder/decoder libraries (the versions currently published to NPM do not work client side), host them in a folder, and then load them as global script tags. There should be six files, and two script tags (which will load the remaining files).
Files:
draco_decoder.js
draco_decoder.wasm
draco_wasm_wrapper.js
draco_encoder.js
draco_encoder.wasm
draco_encoder_wrapper.js
<script src="assets/draco_encoder.js"></script>
<script src="assets/draco_decoder.js"></script>
Then you'll need to write code to load a GLB file, apply compression, and do something with the compressed result. This will require first installing the two packages shown below, and then bundling the web application with your tool of choice (I used https://www.snowpack.dev/ here).
import { WebIO } from '#gltf-transform/core';
import { DracoMeshCompression } from '#gltf-transform/extensions';
const io = new WebIO()
.registerExtensions([DracoMeshCompression])
.registerDependencies({
'draco3d.encoder': await new DracoEncoderModule(),
'draco3d.decoder': await new DracoDecoderModule(),
});
// Load an uncompressed GLB file.
const document = await io.read('./assets/Duck.glb');
// Configure compression settings.
document.createExtension(DracoMeshCompression)
.setRequired(true)
.setEncoderOptions({
method: DracoMeshCompression.EncoderMethod.EDGEBREAKER,
encodeSpeed: 5,
decodeSpeed: 5,
});
// Create compressed GLB, in an ArrayBuffer.
const arrayBuffer = io.writeBinary(document); // ArrayBuffer
In the latest version of 1.5.0, what are these two files? draco_decoder_gltf.js and draco_encoder_gltf.js. Does this means we no longer need the draco_encoder and draco_decoder files? and how do we invoke the transcoder interface without using MeshBuilder. A simpler API would be musth better.

Upload files in server using Meteor Files veliov group

I have this package nodemailer used in Meteor.
After getting the emails, I would like to save the attachments using Meteor Files.
The problem is I don't know how. Can anyone provide a simple example for uploading files in server code. I tried uploading in the client and successful. But when i tried Files.insert() in server, it have "not a function" error.
Here is my code in server,
var mailparser = new MailParser({
streamAttachments: true
});
Fiber(function() {
var timeStamp = Math.floor(Date.now());
mailparser.on("attachment", function(attachment, mail){
... code here to upload
mailparser.on("end", Meteor.bindEnvironment(function (mail_object) {
.... some code here
}));
mailparser.write(data);
mailparser.end();
client.dele(msgnumber);
}).run();
Because insert function is for client side only, I used write() function of Files API. Here is the link,
https://github.com/VeliovGroup/Meteor-Files/wiki/Write

convert cordova files path to File object

I am trying to build a simple photo upload app on Ionic (Cordova). I am using the cordovaImagePicker plugin to have the user select images from the mobile device. This plugin returns an array of paths on the device.
For handling the upload part I am using jquery-file-upload (mostly because that is what I used for the browser version and I am doing all kinds of processing for which I have the code ready). The problem is however that jquery-file-upload expects to work with an input element <input type="file"> which creates a javascript File object containing all kinds of metadata.
So in order to get the cordovaImagePicker to work with jquery-file-upload, I figure I have to convert the filepath to a File object. Below I am using the cordova file plugin to achieve this:
$cordovaImagePicker.getPictures($scope.pickOptions).then(function(filelist) {
$.each(filelist, function (index, filepath) {
$window.resolveLocalFileSystemURL(filepath, function(fileEntry) {
fileEntry.file(function(file) {
var reader = new FileReader();
reader.onloadend = function(e) {
fileObj = new File([this.result],"filename.jpg",{type: "image/jpeg"});
// send filelist from cordovaImagePicker to jquery-fileupload as if through file input
$('#fileupload').fileupload('send', {files: fileObj});
};
reader.readAsArrayBuffer(file);
}, function(e){$scope.errorHandler(e)});
}, function(e){$scope.errorHandler(e)});
});
}, function(error) {
// error getting photos
console.log('Error selecting images through $cordovaImagePicker');
});
So first of all this is not really working correctly, apparently I am doing doing something wrong, since for example the type attribute ends up being another object that contains the type attribute with the correct values (and other such weird issues). I would be happy if someone could point out what I am doing wrong.
Surely there must be something (cordova plugin?) that I am not aware of that does this conversion for me (including for example adding a thumbnail)? Alternatively, maybe there is something that can easily make jquery-file-upload work with filepaths? I couldn't find anything so far...
However, it feels I am trying too hard here to force connecting two components that were just not built to work together (File objects vs filepath) and I should maybe just rewrite the processing and use the cordova file transfer plugin?
I ended up rewriting the uploader with the cordova-file-transfer which works like a charm. I wasted more time trying to work around it than just rewriting it from scratch.

How to upload file in angularjs e2e protractor testing

I want to test file uploading using an angularjs e2e test. How do you do this in e2e tests? I run my test script through grunt karma.
This is how I do it:
var path = require('path');
it('should upload a file', function() {
var fileToUpload = '../some/path/foo.txt',
absolutePath = path.resolve(__dirname, fileToUpload);
element(by.css('input[type="file"]')).sendKeys(absolutePath);
element(by.id('uploadButton')).click();
});
Use the path module to resolve the full path of the file that you want to upload.
Set the path to the input type="file" element.
Click on the upload button.
This will not work on firefox. Protractor will complain because the element is not visible. To upload in firefox you need to make the input visible. This is what I do:
browser.executeAsyncScript(function(callback) {
// You can use any other selector
document.querySelectorAll('#input-file-element')[0]
.style.display = 'inline';
callback();
});
// Now you can upload.
$('input[type="file"]').sendKeys(absolutePath);
$('#uploadButton').click();
You can't directly.
For security reason, you can not simulate a user that is choosing a file on the system within a functional testing suite like ngScenario.
With Protractor, since it is based on WebDriver, it should be possible to use this trick
Q: Does WebDriver support file uploads? A: Yes.
You can't interact with the native OS file browser dialog directly,
but we do some magic so that if you call
WebElement#sendKeys("/path/to/file") on a file upload element, it does
the right thing. Make sure you don't WebElement#click() the file
upload element, or the browser will probably hang.
This works just fine:
$('input[type="file"]').sendKeys("/file/path")
Here is a combo of Andres D and davidb583's advice that would have helped me as I worked through this...
I was trying to get protractor tests executed against the flowjs controls.
// requires an absolute path
var fileToUpload = './testPackages/' + packageName + '/' + fileName;
var absolutePath = path.resolve(__dirname, fileToUpload);
// Find the file input element
var fileElem = element(by.css('input[type="file"]'));
// Need to unhide flowjs's secret file uploader
browser.executeScript(
"arguments[0].style.visibility = 'visible'; arguments[0].style.height = '1px'; arguments[0].style.width = '1px'; arguments[0].style.opacity = 1",
fileElem.getWebElement());
// Sending the keystrokes will ultimately submit the request. No need to simulate the click
fileElem.sendKeys(absolutePath);
// Not sure how to wait for the upload and response to return first
// I need this since I have a test that looks at the results after upload
// ... there is probably a better way to do this, but I punted
browser.sleep(1000);
var imagePath = 'http://placehold.it/120x120&text=image1';
element(by.id('fileUpload')).sendKeys(imagePath);
This is working for me.
This is what I do to upload file on firefox, this script make the element visible to set the path value:
browser.executeScript("$('input[type=\"file\"]').parent().css('visibility', 'visible').css('height', 1).css('width', 1).css('overflow', 'visible')");
If above solutions don't work, read this
First of all, in order to upload the file there should be an input element that takes the path to the file. Normally, it's immediately next to the 'Upload' button... BUT I've seen this, when the button doesn't have an input around the button which may seem to be confusing. Keep clam, the input has to be on the page! Try look for input element in the DOM, that has something like 'upload', or 'file', just keep in mind it can be anywhere.
When you located it, get it's selector, and type in a path to a file. Remember, it has to be absolute path, that starts from you root directory (/something/like/this for MAC users and C:/some/file in Windows)
await $('input[type="file"]').sendKeys("/file/path")
this may not work, if...
protractor's sendKeys can only type in an input that's visible. Often, the input will be hidden or have 0 pixels size. You can fix that too
let $input = $('input[type="file"]');
await browser.executeScript(
"arguments[0].style.visibility = 'visible'; arguments[0].style.height = '1px'; arguments[0].style.width = '1px'; arguments[0].style.opacity = 1",
$input.getWebElement()
);
I realized that the file input in the web app I'm testing is only visible in Firefox when it is scrolled into view using JavaScript, so I added scrollIntoView() in Andres D's code to make it work for my app:
browser.executeAsyncScript(function (callback) {
document.querySelectorAll('input')[2]
.style = '';
document.querySelectorAll('input')[2].scrollIntoView();
callback();
});
(I also removed all of the styles for the file input element)
// To upload a file from C:\ Directory
{
var path = require('path');
var dirname = 'C:/';
var fileToUpload = '../filename.txt';
var absolutePath = path.resolve('C:\filename.txt');
var fileElem = ptor.element.all(protractor.By.css('input[type="file"]'));
fileElem.sendKeys(absolutePath);
cb();
};
If you want to select a file without opening the popup below is the answer :
var path = require('path');
var remote = require('../../node_modules/selenium-webdriver/remote');
browser.setFileDetector(new remote.FileDetector());
var fileToUpload = './resume.docx';
var absolutePath = path.resolve(process.cwd() + fileToUpload);
element(by.css('input[type="file"]')).sendKeys(absolutePath);
the current documented solutions would work only if users are loading jQuery. i all different situations users will get an error such:Failed: $ is not defined
i would suggest to document a solution using native angularjs code.
e.g. i would suggest instead of suggesting:
$('input[type="file"]') .....
to suggest:
angular.element(document.querySelector('input[type="file"]')) .....
the latter is more standard, atop of angular and more important not require jquery

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