303 lines
11 KiB
JavaScript
303 lines
11 KiB
JavaScript
define([
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'jquery',
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'/file/file-crypto.js',
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'/bower_components/tweetnacl/nacl-fast.min.js',
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], function ($, FileCrypto) {
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var Nacl = window.nacl;
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var module = {};
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module.create = function (common, config) {
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var File = {};
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var Messages = common.Messages;
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var queue = File.queue = {
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queue: [],
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inProgress: false
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};
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var uid = function () {
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return 'file-' + String(Math.random()).substring(2);
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};
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var $table = File.$table = $('<table>', { id: 'uploadStatus' });
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var $thead = $('<tr>').appendTo($table);
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$('<td>').text(Messages.upload_name).appendTo($thead);
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$('<td>').text(Messages.upload_size).appendTo($thead);
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$('<td>').text(Messages.upload_progress).appendTo($thead);
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$('<td>').text(Messages.cancel).appendTo($thead);
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var createTableContainer = function ($body) {
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File.$container = $('<div>', { id: 'uploadStatusContainer' }).append($table).appendTo($body);
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return File.$container;
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};
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var getData = function (file, href) {
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var data = {};
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data.name = file.metadata.name;
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data.url = href;
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if (file.metadata.type.slice(0,6) === 'image/') {
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data.mediatag = true;
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}
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return data;
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};
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var upload = function (file) {
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var blob = file.blob;
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var metadata = file.metadata;
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var id = file.id;
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if (queue.inProgress) { return; }
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queue.inProgress = true;
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var $row = $table.find('tr[id="'+id+'"]');
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$row.find('.upCancel').html('-');
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var $pv = $row.find('.progressValue');
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var $pb = $row.find('.progressContainer');
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var $pc = $row.find('.upProgress');
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var $link = $row.find('.upLink');
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var updateProgress = function (progressValue) {
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$pv.text(Math.round(progressValue*100)/100 + '%');
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$pb.css({
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width: (progressValue/100)*$pc.width()+'px'
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});
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};
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var u8 = new Uint8Array(blob);
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var key = Nacl.randomBytes(32);
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var next = FileCrypto.encrypt(u8, metadata, key);
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var estimate = FileCrypto.computeEncryptedSize(blob.byteLength, metadata);
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var sendChunk = function (box, cb) {
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var enc = Nacl.util.encodeBase64(box);
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common.rpc.send.unauthenticated('UPLOAD', enc, function (e, msg) {
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console.log(box);
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cb(e, msg);
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});
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};
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var actual = 0;
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var again = function (err, box) {
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if (err) { throw new Error(err); }
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if (box) {
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actual += box.length;
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var progressValue = (actual / estimate * 100);
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updateProgress(progressValue);
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return void sendChunk(box, function (e) {
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if (e) { return console.error(e); }
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next(again);
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});
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}
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if (actual !== estimate) {
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console.error('Estimated size does not match actual size');
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}
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// if not box then done
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common.uploadComplete(function (e, id) {
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if (e) { return void console.error(e); }
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var uri = ['', 'blob', id.slice(0,2), id].join('/');
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console.log("encrypted blob is now available as %s", uri);
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var b64Key = Nacl.util.encodeBase64(key);
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var hash = common.getFileHashFromKeys(id, b64Key);
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var href = '/file/#' + hash;
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$link.attr('href', href)
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.click(function (e) {
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e.preventDefault();
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window.open($link.attr('href'), '_blank');
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});
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var title = metadata.name;
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var onComplete = function () {
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common.log(Messages._getKey('upload_success', [title]));
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common.prepareFeedback('upload')();
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if (config.onUploaded) {
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var data = getData(file, href);
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config.onUploaded(file.dropEvent, data);
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}
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queue.inProgress = false;
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queue.next();
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};
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if (config.noStore) { return void onComplete(); }
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common.renamePad(title || "", href, function (err) {
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if (err) { return void console.error(err); } // TODO
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onComplete();
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});
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//Title.updateTitle(title || "", href);
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//APP.toolbar.title.show();
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});
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};
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common.uploadStatus(estimate, function (e, pending) {
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if (e) {
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queue.inProgress = false;
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queue.next();
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if (e === 'TOO_LARGE') {
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// TODO update table to say too big?
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return void common.alert(Messages.upload_tooLarge);
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}
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if (e === 'NOT_ENOUGH_SPACE') {
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// TODO update table to say not enough space?
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return void common.alert(Messages.upload_notEnoughSpace);
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}
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console.error(e);
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return void common.alert(Messages.upload_serverError);
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}
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if (pending) {
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// TODO keep this message in case of pending files in another window?
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return void common.confirm(Messages.upload_uploadPending, function (yes) {
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if (!yes) { return; }
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common.uploadCancel(function (e, res) {
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if (e) {
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return void console.error(e);
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}
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console.log(res);
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next(again);
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});
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});
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}
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next(again);
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});
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};
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var prettySize = function (bytes) {
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var kB = common.bytesToKilobytes(bytes);
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if (kB < 1024) { return kB + Messages.KB; }
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var mB = common.bytesToMegabytes(bytes);
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return mB + Messages.MB;
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};
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queue.next = function () {
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if (queue.queue.length === 0) {
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queue.to = window.setTimeout(function () {
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if (config.keepTable) { return; }
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File.$container.fadeOut();
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}, 3000);
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return;
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}
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if (queue.inProgress) { return; }
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File.$container.show();
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var file = queue.queue.shift();
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upload(file);
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};
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queue.push = function (obj) {
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var id = uid();
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obj.id = id;
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queue.queue.push(obj);
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$table.show();
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var estimate = FileCrypto.computeEncryptedSize(obj.blob.byteLength, obj.metadata);
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var $progressBar = $('<div>', {'class':'progressContainer'});
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var $progressValue = $('<span>', {'class':'progressValue'}).text(Messages.upload_pending);
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var $tr = $('<tr>', {id: id}).appendTo($table);
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var $cancel = $('<span>', {'class': 'cancel fa fa-times'}).click(function () {
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queue.queue = queue.queue.filter(function (el) { return el.id !== id; });
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$cancel.remove();
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$tr.find('.upCancel').text('-');
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$tr.find('.progressValue').text(Messages.upload_cancelled);
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});
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var $link = $('<a>', {
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'class': 'upLink',
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'rel': 'noopener noreferrer'
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}).text(obj.metadata.name);
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$('<td>').append($link).appendTo($tr);
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$('<td>').text(prettySize(estimate)).appendTo($tr);
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$('<td>', {'class': 'upProgress'}).append($progressBar).append($progressValue).appendTo($tr);
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$('<td>', {'class': 'upCancel'}).append($cancel).appendTo($tr);
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queue.next();
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};
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var handleFile = File.handleFile = function (file, e) {
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var reader = new FileReader();
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reader.onloadend = function () {
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queue.push({
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blob: this.result,
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metadata: {
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name: file.name,
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type: file.type,
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},
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dropEvent: e
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});
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};
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reader.readAsArrayBuffer(file);
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};
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var onFileDrop = File.onFileDrop = function (file, e) {
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if (!common.isLoggedIn()) {
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return common.alert(common.Messages.upload_mustLogin);
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}
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Array.prototype.slice.call(file).forEach(function (d) {
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handleFile(d, e);
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});
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};
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var createAreaHandlers = File.createDropArea = function ($area, $hoverArea) {
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var counter = 0;
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if (!$hoverArea) { $hoverArea = $area; }
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if (!$area) { return; }
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$hoverArea
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.on('dragenter', function (e) {
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e.preventDefault();
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e.stopPropagation();
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counter++;
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$hoverArea.addClass('hovering');
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})
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.on('dragleave', function (e) {
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e.preventDefault();
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e.stopPropagation();
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counter--;
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if (counter <= 0) {
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$hoverArea.removeClass('hovering');
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}
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});
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$area
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.on('drag dragstart dragend dragover drop dragenter dragleave', function (e) {
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e.preventDefault();
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e.stopPropagation();
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})
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.on('drop', function (e) {
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e.stopPropagation();
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var dropped = e.originalEvent.dataTransfer.files;
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counter = 0;
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$hoverArea.removeClass('hovering');
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onFileDrop(dropped, e);
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});
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};
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var createUploader = function ($area, $hover, $body) {
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if (!config.noHandlers) {
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createAreaHandlers($area, null);
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}
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createTableContainer($body);
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};
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createUploader(config.dropArea, config.hoverArea, config.body);
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return File;
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};
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return module;
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});
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