spee.ch/public/assets/js/memePublish.js

140 lines
4.9 KiB
JavaScript
Raw Normal View History

2017-06-20 22:07:49 +02:00
// define variables
var socket = io();
var uploader = new SocketIOFileUpload(socket);
var stagedFiles = null;
2017-06-21 01:36:19 +02:00
var license = 'Creative Commons';
var nsfw = false;
2017-06-21 18:14:53 +02:00
var claimName;
function dataURItoBlob(dataURI) {
// convert base64/URLEncoded data component to raw binary data held in a string
var byteString;
if (dataURI.split(',')[0].indexOf('base64') >= 0)
byteString = atob(dataURI.split(',')[1]);
else
byteString = unescape(dataURI.split(',')[1]);
// separate out the mime component
var mimeString = dataURI.split(',')[0].split(':')[1].split(';')[0];
// write the bytes of the string to a typed array
var ia = new Uint8Array(byteString.length);
for (var i = 0; i < byteString.length; i++) {
ia[i] = byteString.charCodeAt(i);
}
return new Blob([ia], {type:mimeString});
}
function startPublish() {
//download the image
var dataUrl = canvas.toDataURL('image/jpeg'); // canvas defined in memeDraw.js
var blob = dataURItoBlob(dataUrl)
claimName = claimNameInput.value; // claimNameInput.value defined in memeDraw.js
var fileName = claimNameInput.value + ".jpg";
var file = new File([blob], fileName, {type: 'image/jpeg', lastModified: Date.now()});
console.log(file);
stageAndPublish(file);
};
2017-06-20 22:07:49 +02:00
/* helper functions */
// create a progress animation
function createProgressBar(element, size){
var x = 1;
var adder = 1;
function addOne(){
var bars = '<p>|';
for (var i = 0; i < x; i++){ bars += ' | '; }
bars += '</p>';
element.innerHTML = bars;
if (x === size){
adder = -1;
} else if ( x === 0){
adder = 1;
}
x += adder;
};
setInterval(addOne, 300);
}
function stageAndPublish(file) {
2017-06-21 01:36:19 +02:00
// stage files
stagedFiles = [file]; // stores the selected file for
2017-06-20 22:07:49 +02:00
// make sure a file was selected
if (stagedFiles) {
// make sure only 1 file was selected
if (stagedFiles.length < 1) {
alert("A file is needed");
2017-06-20 22:07:49 +02:00
return;
}
// make sure the content type is acceptable
switch (stagedFiles[0].type) {
case "image/png":
case "image/jpeg":
case "image/gif":
case "video/mp4":
uploader.submitFiles(stagedFiles);
break;
default:
alert("Only .png, .jpeg, .gif, and .mp4 files are currently supported");
break;
}
}
2017-06-21 01:36:19 +02:00
}
// update the publish status
function updatePublishStatus(msg){
document.getElementById('publish-status').innerHTML = msg;
}
2017-06-20 22:07:49 +02:00
/* socketio-file-upload listeners */
uploader.addEventListener('start', function(event){
event.file.meta.name = claimName;
2017-06-20 22:07:49 +02:00
event.file.meta.license = license;
event.file.meta.nsfw = nsfw;
event.file.meta.type = stagedFiles[0].type;
// re-set the html in the publish area
document.getElementById('publish-active-area').innerHTML = '<div id="publish-status"></div><div id="progress-bar"></div>';
// start a progress animation
createProgressBar(document.getElementById('progress-bar'), 12);
});
uploader.addEventListener('progress', function(event){
var percent = event.bytesLoaded / event.file.size * 100;
updatePublishStatus('File is ' + percent.toFixed(2) + '% loaded to the server');
});
/* socket.io message listeners */
socket.on('publish-status', function(msg){
updatePublishStatus(msg);
});
socket.on('publish-failure', function(msg){
2017-06-21 18:14:53 +02:00
document.getElementById('publish-active-area').innerHTML = '<p>' + JSON.stringify(msg) + '</p><p> --(✖╭╮✖)→ </p><strong>For help, post the above error text in the #speech channel on the <a href="https://lbry.slack.com/" target="_blank">LBRY slack</a></strong>';
2017-06-20 22:07:49 +02:00
});
socket.on('publish-complete', function(msg){
2017-06-21 18:14:53 +02:00
var publishResults;
var directUrl = 'https://spee.ch/' + msg.name + '/' + msg.result.claim_id;
// build new publish area
publishResults = '<p><span id="tweet-meme-button"></span>Your publish is complete! Go ahead, share it with the world!</p>';
publishResults += '<p><strong>NOTE: the blockchain will need a few minutes to process your amazing work. Please allow some time for your meme to appear at your link.</strong></p>';
publishResults += '<p>Your meme has been published to <a target="_blank" href="/' + msg.name + '">http://spee.ch/' + msg.name + '</a></p>';
publishResults += '<p>Here is a direct link to where your meme will be stored: <a target="_blank" href="' + directUrl + '">' + directUrl + '</a></p>';
2017-06-20 22:07:49 +02:00
publishResults += '<p>Your Transaction ID is: <a target="_blank" href="https://explorer.lbry.io/#!/transaction?id=' + msg.result.txid + '">' + msg.result.txid + '</a></p>';
2017-06-21 02:39:41 +02:00
publishResults += '<p><a href="/meme-fodder/play">Reload to publish another</a></p>';
2017-06-21 18:14:53 +02:00
// update publish area
document.getElementById('publish-active-area').innerHTML = publishResults;
// add a tweet button
twttr.widgets
.createShareButton(
directUrl,
document.getElementById('tweet-meme-button'),
{
text: 'Check out my meme creation on the LBRY blockchain!',
hashtags: 'LBRYMemeFodder',
via: 'lbryio'
})
.then( function( el ) {
console.log('Tweet button added.');
});
2017-06-20 22:07:49 +02:00
});