spee.ch/public/assets/js/claimPublish.js

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JavaScript
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// define variables
var socket = io();
var uploader = new SocketIOFileUpload(socket);
var stagedFiles = null;
/* 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);
}
// preview file and stage the image for upload
function previewAndStageFile(selectedFile){
var preview = document.getElementById('image-preview');
var dropzone = document.getElementById('drop-zone');
var previewReader = new FileReader();
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var nameInput = document.getElementById('publish-name');
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preview.style.display = 'block';
dropzone.style.display = 'none';
previewReader.onloadend = function () {
preview.src = previewReader.result;
};
if (selectedFile) {
previewReader.readAsDataURL(selectedFile); // reads the data and sets the img src
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if (nameInput.value === "") {
nameInput.value = selectedFile.name.substring(0, selectedFile.name.indexOf('.'));
}
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stagedFiles = [selectedFile]; // stores the selected file for upload
} else {
preview.src = '';
}
}
// update the publish status
function updatePublishStatus(msg){
document.getElementById('publish-status').innerHTML = msg;
}
// process the drop-zone drop
function drop_handler(ev) {
ev.preventDefault();
// if dropped items aren't files, reject them
var dt = ev.dataTransfer;
if (dt.items) {
if (dt.items[0].kind == 'file') {
var droppedFile = dt.items[0].getAsFile();
previewAndStageFile(droppedFile);
}
}
}
// prevent the browser's default drag behavior
function dragover_handler(ev) {
ev.preventDefault();
}
// remove all of the drag data
function dragend_handler(ev) {
var dt = ev.dataTransfer;
if (dt.items) {
for (var i = 0; i < dt.items.length; i++) {
dt.items.remove(i);
}
} else {
ev.dataTransfer.clearData();
}
}
/* configure the submit button */
document.getElementById('publish-submit').addEventListener('click', function(event){
event.preventDefault();
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var name = document.getElementById('publish-name').value;
var invalidCharacters = /[^\w,-]/.exec(name);
// validate 'name'
if (invalidCharacters) {
alert(invalidCharacters + ' is not allowed. A-Z, a-z, 0-9, "_" and "-" only.');
return;
} else if (name.length < 1) {
alert("You must enter a name for your claim");
return;
}
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// make sure a file was selected
if (stagedFiles) {
// make sure only 1 file was selected
if (stagedFiles.length > 1) {
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alert("Only one file is allowed at a time");
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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;
}
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} else {
alert("Please select a file");
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}
})
/* socketio-file-upload listeners */
uploader.addEventListener('start', function(event){
var name = document.getElementById('publish-name').value;
var license = document.getElementById('publish-license').value;
var nsfw = document.getElementById('publish-nsfw').checked;
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event.file.meta.name = name;
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){
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>';
});
socket.on('publish-complete', function(msg){
var publishResults;
var directUrl = '/' + msg.name + '/' + msg.result.claim_id;
// build new publish area
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publishResults = '<p>Your publish is complete! View it here:</p>';
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publishResults += '<p><a target="_blank" href="' + directUrl + '">spee.ch' + directUrl + '</a></p>';
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publishResults += '<p><button class="copy-button">Copy to clipboard</button></p>';
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publishResults += '<p><a target="_blank" href="https://explorer.lbry.io/#!/transaction/' + msg.result.txid + '">View the transaction details</a></p>';
publishResults += '<a href="/"><button>Reload</button></a></p>';
// update publish area
document.getElementById('publish-active-area').innerHTML = publishResults;
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// update the link holder
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document.getElementById('direct-link-holder').innerText = 'https://spee.ch' + directUrl;
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// enable copy-to-clipboard
var copyBtn = document.querySelector('.copy-button');
copyBtn.addEventListener('click', function(event) {
// select the text
var text = document.getElementById('direct-link-holder');
text.select();
try {
var successful = document.execCommand('copy');
var msg = successful ? 'successful' : 'unsuccessful';
} catch (err) {
alert('Oops, unable to copy');
}
});
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});