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onion/js/components/ascribe_uploader/react_s3_fine_uploader.js
2016-04-20 15:15:59 +02:00

1104 lines
42 KiB
JavaScript

'use strict';
import React from 'react/addons';
import fineUploader from 'fineUploader';
import Q from 'q';
import S3Fetcher from '../../fetchers/s3_fetcher';
import FileDragAndDrop from './ascribe_file_drag_and_drop/file_drag_and_drop';
import ErrorQueueStore from '../../stores/error_queue_store';
import GlobalNotificationModel from '../../models/global_notification_model';
import GlobalNotificationActions from '../../actions/global_notification_actions';
import AppConstants from '../../constants/application_constants';
import { ErrorClasses, testErrorAgainstAll } from '../../constants/error_constants';
import { RETRY_ATTEMPT_TO_SHOW_CONTACT_US, ENDPOINTS } from '../../constants/uploader_constants';
import { displayValidFilesFilter, FileStatus, transformAllowedExtensionsToInputAcceptProp } from './react_s3_fine_uploader_utils';
import { getCookie } from '../../utils/fetch_api_utils';
import { computeHashOfFile, extractFileExtensionFromString } from '../../utils/file_utils';
import { getLangText } from '../../utils/lang_utils';
const { shape,
string,
oneOfType,
number,
func,
bool,
any,
object,
oneOf,
element,
arrayOf } = React.PropTypes;
const ReactS3FineUploader = React.createClass({
propTypes: {
areAssetsDownloadable: bool,
areAssetsEditable: bool,
errorNotificationMessage: string,
handleChangedFile: func, // for when a file is dropped or selected, TODO: rename to onChangedFile
submitFile: func, // for when a file has been successfully uploaded, TODO: rename to onSubmitFile
onValidationFailed: func,
setWarning: func, // for when the parent component wants to be notified of uploader warnings (ie. upload failed)
showErrorPrompt: bool,
// Handle form validation
setIsUploadReady: func, //TODO: rename to setIsUploaderValidated
isReadyForFormSubmission: func,
// We encountered some cases where people had difficulties to upload their
// works to ascribe due to a slow internet connection.
// One solution we found in the process of tackling this problem was to hash
// the file in the browser using md5 and then uploading the resulting text document instead
// of the actual file.
//
// This boolean and string essentially enable that behavior.
// Right now, we determine which upload method to use by appending a query parameter,
// which should be passed into 'uploadMethod':
// 'hash': upload using the hash
// 'upload': upload full file (default if not specified)
enableLocalHashing: bool,
uploadMethod: oneOf(['hash', 'upload']),
// A class of a file the user has to upload
// Needs to be defined both in singular as well as in plural
fileClassToUpload: shape({
singular: string,
plural: string
}),
// Uploading functionality of react fineuploader is disconnected from its UI
// layer, which means that literally every (properly adjusted) react element
// can handle the UI handling.
fileInputElement: oneOfType([
func,
element
]),
// S3 helpers
createBlobRoutine: shape({
url: string,
pieceId: number
}),
keyRoutine: shape({
url: string,
fileClass: string,
pieceId: number
}),
// FineUploader options
debug: bool,
autoUpload: bool,
chunking: shape({
enabled: bool
}),
cors: shape({
expected: bool
}),
deleteFile: shape({
enabled: bool,
method: string,
endpoint: string,
customHeaders: object
}).isRequired,
formatFileName: func,
messages: shape({
unsupportedBrowser: string
}),
multiple: bool,
objectProperties: shape({
acl: string
}),
request: shape({
endpoint: string,
accessKey: string,
params: shape({
csrfmiddlewaretoken: string
})
}),
resume: shape({
enabled: bool
}),
retry: shape({
enableAuto: bool
}),
session: shape({
customHeaders: object,
endpoint: string,
params: object,
refreshOnRequests: bool
}),
signature: shape({
endpoint: string
}).isRequired,
uploadSuccess: shape({
method: string,
endpoint: string,
params: shape({
isBrowserPreviewCapable: any, // maybe fix this later
bitcoin_ID_noPrefix: string
})
}),
validation: shape({
itemLimit: number,
sizeLimit: number,
allowedExtensions: arrayOf(string)
})
},
getDefaultProps() {
return {
errorNotificationMessage: getLangText('Oops, we had a problem uploading your file. Please contact us if this happens repeatedly.'),
showErrorPrompt: false,
fileClassToUpload: {
singular: getLangText('file'),
plural: getLangText('files')
},
fileInputElement: FileDragAndDrop,
// FineUploader options
autoUpload: true,
debug: false,
multiple: false,
objectProperties: {
acl: 'public-read',
bucket: 'ascribe0'
},
request: {
endpoint: ENDPOINTS.accelerate,
accessKey: 'AKIAIVCZJ33WSCBQ3QDA'
},
uploadSuccess: {
params: {
isBrowserPreviewCapable: fineUploader.supportedFeatures.imagePreviews
}
},
cors: {
expected: true,
sendCredentials: true
},
chunking: {
enabled: true,
concurrent: {
enabled: true
}
},
resume: {
enabled: true
},
retry: {
enableAuto: false
},
session: {
endpoint: null
},
messages: {
unsupportedBrowser: '<h3>' + getLangText('Upload is not functional in IE7 as IE7 has no support for CORS!') + '</h3>'
},
formatFileName: function(name) { // fix maybe
if (name !== undefined && name.length > 26) {
name = name.slice(0, 15) + '...' + name.slice(-15);
}
return name;
}
};
},
getInitialState() {
return {
filesToUpload: [],
uploader: this.createNewFineUploader(),
csrfToken: getCookie(AppConstants.csrftoken),
errorState: {
manualRetryAttempt: 0,
errorClass: null
},
uploadInProgress: false,
// -1: aborted
// -2: uninitialized
hashingProgress: -2,
// this is for logging
chunks: {}
};
},
componentWillUpdate() {
// since the csrf header is defined in this component's props,
// everytime the csrf cookie is changed we'll need to reinitalize
// fineuploader and update the actual csrf token
let potentiallyNewCSRFToken = getCookie(AppConstants.csrftoken);
if(this.state.csrfToken !== potentiallyNewCSRFToken) {
this.setState({
uploader: this.createNewFineUploader(),
csrfToken: potentiallyNewCSRFToken
});
}
},
componentWillUnmount() {
// Without this method, fineuploader will continue to try to upload artworks
// even though this component is not mounted any more.
// Therefore we cancel all uploads
this.state.uploader.cancelAll();
},
createNewFineUploader() {
return new fineUploader.s3.FineUploaderBasic(this.propsToConfig());
},
propsToConfig() {
const objectProperties = Object.assign({}, this.props.objectProperties);
objectProperties.key = this.requestKey;
return {
autoUpload: this.props.autoUpload,
debug: this.props.debug,
objectProperties: objectProperties, // do a special key handling here
request: this.props.request,
signature: this.props.signature,
uploadSuccess: this.props.uploadSuccess,
cors: this.props.cors,
chunking: this.props.chunking,
resume: this.props.resume,
deleteFile: this.props.deleteFile,
session: this.props.session,
validation: this.props.validation,
messages: this.props.messages,
formatFileName: this.props.formatFileName,
multiple: this.props.multiple,
retry: this.props.retry,
callbacks: {
onAllComplete: this.onAllComplete,
onComplete: this.onComplete,
onCancel: this.onCancel,
onProgress: this.onProgress,
onDeleteComplete: this.onDeleteComplete,
onSessionRequestComplete: this.onSessionRequestComplete,
onError: this.onError,
onUploadChunk: this.onUploadChunk,
onUploadChunkSuccess: this.onUploadChunkSuccess
}
};
},
// Resets the whole react fineuploader component to its initial state
reset() {
// Cancel all currently ongoing uploads
this.cancelUploads();
// and reset component in general
this.state.uploader.reset();
// proclaim that upload is not ready
this.props.setIsUploadReady(false);
// reset any warnings propagated to parent
this.setWarning(false);
// reset internal data structures of component
this.setState(this.getInitialState());
},
requestKey(fileId) {
let filename = this.state.uploader.getName(fileId);
let uuid = this.state.uploader.getUuid(fileId);
return Q.Promise((resolve, reject) => {
window.fetch(this.props.keyRoutine.url, {
method: 'post',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json',
'X-CSRFToken': getCookie(AppConstants.csrftoken)
},
credentials: 'include',
body: JSON.stringify({
'filename': filename,
'category': this.props.keyRoutine.fileClass,
'uuid': uuid,
'piece_id': this.props.keyRoutine.pieceId
})
})
.then((res) => {
return res.json();
})
.then((res) =>{
resolve(res.key);
})
.catch((err) => {
this.onErrorPromiseProxy(err);
reject(err);
});
});
},
createBlob(file) {
const { createBlobRoutine } = this.props;
return Q.Promise((resolve, reject) => {
// if createBlobRoutine is not defined,
// we're progressing right away without posting to S3
// so that this can be done manually by the form
if (!createBlobRoutine) {
// still we warn the user of this component
console.warn('createBlobRoutine was not defined for ReactS3FineUploader. Continuing without creating the blob on the server.');
resolve();
return;
}
window.fetch(createBlobRoutine.url, {
method: 'post',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json',
'X-CSRFToken': getCookie(AppConstants.csrftoken)
},
credentials: 'include',
body: JSON.stringify({
'filename': file.name,
'key': file.key,
'piece_id': createBlobRoutine.pieceId
})
})
.then((res) => {
return res.json();
})
.then((res) => {
if(res.otherdata) {
file.s3Url = res.otherdata.url_safe;
file.s3UrlSafe = res.otherdata.url_safe;
} else if(res.digitalwork) {
file.s3Url = res.digitalwork.url_safe;
file.s3UrlSafe = res.digitalwork.url_safe;
} else if(res.contractblob) {
file.s3Url = res.contractblob.url_safe;
file.s3UrlSafe = res.contractblob.url_safe;
} else if(res.thumbnail) {
file.s3Url = res.thumbnail.url_safe;
file.s3UrlSafe = res.thumbnail.url_safe;
} else {
throw new Error(getLangText('Could not find a url to download.'));
}
resolve(res);
})
.catch((err) => {
this.onErrorPromiseProxy(err);
reject(err);
});
});
},
// Cancel uploads and clear previously selected files on the input element
cancelUploads(id) {
typeof id !== 'undefined' ? this.state.uploader.cancel(id) : this.state.uploader.cancelAll();
// Reset the file input element to clear the previously selected files so that
// the user can reselect them again.
this.clearFileSelection();
},
checkFormSubmissionReady() {
const { isReadyForFormSubmission, setIsUploadReady } = this.props;
// since the form validation props isReadyForFormSubmission and setIsUploadReady
// are optional, we'll only trigger them when they're actually defined
if (typeof isReadyForFormSubmission === 'function' && typeof setIsUploadReady === 'function') {
// set uploadReady to true if the uploader's ready for submission
setIsUploadReady(isReadyForFormSubmission(this.state.filesToUpload));
} else {
console.warn('You didn\'t define the functions isReadyForFormSubmission and/or setIsUploadReady in as a prop in react-s3-fine-uploader');
}
},
clearFileSelection() {
const { fileInput } = this.refs;
if (fileInput && typeof fileInput.clearSelection === 'function') {
fileInput.clearSelection();
}
},
getAllowedExtensions() {
const { validation: { allowedExtensions } = {} } = this.props;
if (allowedExtensions && allowedExtensions.length) {
return transformAllowedExtensionsToInputAcceptProp(allowedExtensions);
} else {
return null;
}
},
getUploadErrorClass({ type = 'upload', reason, xhr }) {
const { manualRetryAttempt } = this.state.errorState;
let matchedErrorClass;
if ('onLine' in window.navigator && !window.navigator.onLine) {
// If the user's offline, this is definitely the most important error to show.
// TODO: use a better mechanism for checking network state, ie. offline.js
matchedErrorClass = ErrorClasses.upload.offline;
} else if (manualRetryAttempt === RETRY_ATTEMPT_TO_SHOW_CONTACT_US) {
// Use the contact us error class if they've retried a number of times
// and are still unsuccessful
matchedErrorClass = ErrorClasses.upload.contactUs;
} else {
matchedErrorClass = testErrorAgainstAll({ type, reason, xhr });
if (!matchedErrorClass) {
// If none found, show the next error message in the queue for upload errors
matchedErrorClass = ErrorQueueStore.getNextError('upload');
}
}
return matchedErrorClass;
},
getXhrErrorComment(xhr) {
if (xhr) {
return {
response: xhr.response,
url: xhr.responseURL,
status: xhr.status,
statusText: xhr.statusText
};
}
},
isDropzoneInactive() {
const { areAssetsEditable, enableLocalHashing, multiple, showErrorPrompt, uploadMethod } = this.props;
const { errorState, filesToUpload } = this.state;
const filesToDisplay = filesToUpload.filter((file) => {
return file.status !== FileStatus.DELETED &&
file.status !== FileStatus.CANCELED &&
file.status !== FileStatus.UPLOAD_FAILED &&
file.size !== -1;
});
return (enableLocalHashing && !uploadMethod) ||
!areAssetsEditable ||
(showErrorPrompt && errorState.errorClass) ||
(!multiple && filesToDisplay.length > 0);
},
isFileValid(file) {
const { validation: { allowedExtensions, sizeLimit = 0 }, onValidationFailed } = this.props;
const fileExt = extractFileExtensionFromString(file.name);
if (file.size > sizeLimit) {
const fileSizeInMegaBytes = sizeLimit / 1000000;
const notification = new GlobalNotificationModel(getLangText('A file you submitted is bigger than ' + fileSizeInMegaBytes + 'MB.'), 'danger', 5000);
GlobalNotificationActions.appendGlobalNotification(notification);
if (typeof onValidationFailed === 'function') {
onValidationFailed(file);
}
return false;
} else if (allowedExtensions && !allowedExtensions.includes(fileExt)) {
const notification = new GlobalNotificationModel(getLangText(`The file you've submitted is of an invalid file format: Valid format(s): ${allowedExtensions.join(', ')}`), 'danger', 5000);
GlobalNotificationActions.appendGlobalNotification(notification);
return false;
} else {
return true;
}
},
selectValidFiles(files) {
return Array.from(files).reduce((validFiles, file) => {
if (this.isFileValid(file)) {
validFiles.push(file);
}
return validFiles;
}, []);
},
// This method has been made promise-based to immediately afterwards
// call a callback function (instantly after this.setState went through)
// This is e.g. needed when showing/hiding the optional thumbnail upload
// field in the registration form
setStatusOfFile(fileId, status) {
return Q.Promise((resolve) => {
let changeSet = {};
if (status === FileStatus.DELETED || status === FileStatus.CANCELED || status === FileStatus.UPLOAD_FAILED) {
changeSet.progress = { $set: 0 };
}
changeSet.status = { $set: status };
let filesToUpload = React.addons.update(this.state.filesToUpload, { [fileId]: changeSet });
this.setState({ filesToUpload }, resolve);
});
},
setThumbnailForFileId(fileId, url) {
const { filesToUpload } = this.state;
if(fileId < filesToUpload.length) {
const changeSet = { $set: url };
const newFilesToUpload = React.addons.update(filesToUpload, {
[fileId]: { thumbnailUrl: changeSet }
});
this.setState({ filesToUpload: newFilesToUpload });
} else {
throw new Error('Accessing an index out of range of filesToUpload');
}
},
setWarning(hasWarning) {
if (typeof this.props.setWarning === 'function') {
this.props.setWarning(hasWarning);
}
},
/* FineUploader specific callback function handlers */
onUploadChunk(id, name, chunkData) {
let chunks = this.state.chunks;
chunks[id + '-' + chunkData.startByte + '-' + chunkData.endByte] = {
id,
name,
chunkData,
completed: false
};
let startedChunks = React.addons.update(this.state.startedChunks, { $set: chunks });
this.setState({ startedChunks });
},
onUploadChunkSuccess(id, chunkData, responseJson, xhr) {
let chunks = this.state.chunks;
let chunkKey = id + '-' + chunkData.startByte + '-' + chunkData.endByte;
if(chunks[chunkKey]) {
chunks[chunkKey].completed = true;
chunks[chunkKey].responseJson = responseJson;
chunks[chunkKey].xhr = xhr;
let startedChunks = React.addons.update(this.state.startedChunks, { $set: chunks });
this.setState({ startedChunks });
}
},
onAllComplete(succeed, failed) {
if (this.state.uploadInProgress) {
this.setState({
uploadInProgress: false
});
}
},
onComplete(id, name, res, xhr) {
// There has been an issue with the server's connection
if (xhr && xhr.status === 0 && res.success) {
console.logGlobal(new Error('Upload succeeded with a status code 0'), {
files: this.state.filesToUpload,
chunks: this.state.chunks,
xhr: this.getXhrErrorComment(xhr)
});
// onError will catch any errors, so we can ignore them here
} else if (!res.error && res.success) {
let files = this.state.filesToUpload;
// Set the state of the completed file to 'upload successful' in order to
// remove it from the GUI
files[id].status = FileStatus.UPLOAD_SUCCESSFUL;
files[id].key = this.state.uploader.getKey(id);
let filesToUpload = React.addons.update(this.state.filesToUpload, { $set: files });
this.setState({ filesToUpload });
// Only after the blob has been created server-side, we can make the form submittable.
this.createBlob(files[id])
.then(() => {
if (typeof this.props.submitFile === 'function') {
this.props.submitFile(files[id]);
} else {
console.warn('You didn\'t define submitFile as a prop in react-s3-fine-uploader');
}
this.checkFormSubmissionReady();
});
}
},
/**
* We want to channel all errors in this component through one single method.
* As fineuploader's `onError` method cannot handle the callback parameters of
* a promise we define this proxy method to crunch them into the correct form.
*
* @param {error} err a plain Javascript error
*/
onErrorPromiseProxy(err) {
this.onError(null, null, err.message);
},
onError(id, name, errorReason, xhr) {
const { errorNotificationMessage, showErrorPrompt } = this.props;
const { chunks, filesToUpload } = this.state;
console.logGlobal(errorReason, {
files: filesToUpload,
chunks: chunks,
xhr: this.getXhrErrorComment(xhr)
});
let notificationMessage;
if (showErrorPrompt) {
this.setStatusOfFile(id, FileStatus.UPLOAD_FAILED);
// If we've already found an error on this upload, just ignore other errors
// that pop up. They'll likely pop up again when the user retries.
if (!this.state.errorState.errorClass) {
notificationMessage = errorNotificationMessage;
const errorState = React.addons.update(this.state.errorState, {
errorClass: {
$set: this.getUploadErrorClass({
reason: errorReason,
xhr
})
}
});
this.setState({ errorState });
this.setWarning(true);
}
} else {
notificationMessage = errorReason || errorNotificationMessage;
this.cancelUploads();
}
if (notificationMessage) {
const notification = new GlobalNotificationModel(notificationMessage, 'danger', 5000);
GlobalNotificationActions.appendGlobalNotification(notification);
}
},
onCancel(id) {
// when a upload is canceled, we need to update this components file array
this.setStatusOfFile(id, FileStatus.CANCELED)
.then(() => {
if(typeof this.props.handleChangedFile === 'function') {
this.props.handleChangedFile(this.state.filesToUpload[id]);
}
});
let notification = new GlobalNotificationModel(getLangText('File upload canceled'), 'success', 5000);
GlobalNotificationActions.appendGlobalNotification(notification);
this.checkFormSubmissionReady();
// FineUploader's onAllComplete event doesn't fire if all files are cancelled
// so we need to double check if this is the last file getting cancelled.
//
// Because we're calling FineUploader.getInProgress() in a cancel callback,
// the current file getting cancelled is still considered to be in progress
// so there will be one file left in progress when we're cancelling the last file.
if (this.state.uploader.getInProgress() === 1) {
this.setState({
uploadInProgress: false
});
}
return true;
},
onProgress(id, name, uploadedBytes, totalBytes) {
let filesToUpload = React.addons.update(this.state.filesToUpload, {
[id]: {
progress: { $set: (uploadedBytes / totalBytes) * 100}
}
});
this.setState({ filesToUpload });
},
onSessionRequestComplete(response, success) {
if(success) {
// fetch blobs for images
response = response.map((file) => {
file.url = file.s3UrlSafe;
file.status = FileStatus.ONLINE;
file.progress = 100;
return file;
});
// add file to filesToUpload
let updatedFilesToUpload = this.state.filesToUpload.concat(response);
// refresh all files ids,
updatedFilesToUpload = updatedFilesToUpload.map((file, i) => {
file.id = i;
return file;
});
let filesToUpload = React.addons.update(this.state.filesToUpload, {$set: updatedFilesToUpload});
this.setState({filesToUpload });
} else {
// server has to respond with 204
//let notification = new GlobalNotificationModel('Could not load attached files (Further data)', 'danger', 10000);
//GlobalNotificationActions.appendGlobalNotification(notification);
//
//throw new Error('The session request failed', response);
}
},
onDeleteComplete(id, xhr, isError) {
if(isError) {
this.setStatusOfFile(id, FileStatus.ONLINE);
let notification = new GlobalNotificationModel(getLangText('There was an error deleting your file.'), 'danger', 10000);
GlobalNotificationActions.appendGlobalNotification(notification);
} else {
let notification = new GlobalNotificationModel(getLangText('File deleted'), 'success', 5000);
GlobalNotificationActions.appendGlobalNotification(notification);
}
this.checkFormSubmissionReady();
},
handleDeleteFile(fileId) {
// We set the files state to 'deleted' immediately, so that the user is not confused with
// the unresponsiveness of the UI
//
// If there is an error during the deletion, we will just change the status back to FileStatus.ONLINE
// and display an error message
this.setStatusOfFile(fileId, FileStatus.DELETED)
.then(() => {
if(typeof this.props.handleChangedFile === 'function') {
this.props.handleChangedFile(this.state.filesToUpload[fileId]);
}
});
// In some instances (when the file was already uploaded and is just displayed to the user
// - for example in the contract or additional files dialog)
// fineuploader does not register an id on the file (we do, don't be confused by this!).
// Since you can only delete a file by its id, we have to implement this method ourselves
//
// So, if an id is not present, we delete the file manually
// To check which files are already uploaded from previous sessions we check their status.
// If they are, it is "online"
if(this.state.filesToUpload[fileId].status !== FileStatus.ONLINE) {
// delete file from server
this.state.uploader.deleteFile(fileId);
// this is being continued in onDeleteFile, as
// fineuploaders deleteFile does not return a correct callback or
// promise
} else {
let fileToDelete = this.state.filesToUpload[fileId];
S3Fetcher
.deleteFile(fileToDelete.s3Key, fileToDelete.s3Bucket)
.then(() => this.onDeleteComplete(fileToDelete.id, null, false))
.catch(() => this.onDeleteComplete(fileToDelete.id, null, true));
}
},
handleCancelFile(fileId) {
this.cancelUploads(fileId);
},
handleCancelHashing() {
// Every progress tick of the hashing function in handleUploadFile there is a
// check if this.state.hashingProgress is -1. If so, there is an error thrown that cancels
// the hashing of all files immediately.
this.setState({ hashingProgress: -1 });
},
handlePauseFile(fileId) {
if(this.state.uploader.pauseUpload(fileId)) {
this.setStatusOfFile(fileId, FileStatus.PAUSED);
} else {
throw new Error(getLangText('File upload could not be paused.'));
}
},
handleResumeFile(fileId) {
if(this.state.uploader.continueUpload(fileId)) {
this.setStatusOfFile(fileId, FileStatus.UPLOADING);
} else {
throw new Error(getLangText('File upload could not be resumed.'));
}
},
handleRetryFiles(fileIds) {
let filesToUpload = this.state.filesToUpload;
if (fileIds.constructor !== Array) {
fileIds = [ fileIds ];
}
fileIds.forEach((fileId) => {
this.state.uploader.retry(fileId);
filesToUpload = React.addons.update(filesToUpload, { [fileId]: { status: { $set: FileStatus.UPLOADING } } });
});
this.setState({
// Reset the error class along with the retry
errorState: {
manualRetryAttempt: this.state.errorState.manualRetryAttempt + 1
},
filesToUpload
});
this.setWarning(false);
},
handleUploadFile(files) {
// While files are being uploaded, the form cannot be ready
// for submission
this.props.setIsUploadReady(false);
// If multiple set and user already uploaded its work,
// cancel upload
if(!this.props.multiple && this.state.filesToUpload.filter(displayValidFilesFilter).length > 0) {
this.clearFileSelection();
return;
}
// Select only the submitted files that fit the file size and allowed extensions
files = this.selectValidFiles(files);
// if multiple is set to false and user drops multiple files into the dropzone,
// take the first one and notify user that only one file can be submitted
if(!this.props.multiple && files.length > 1) {
let tempFilesList = [];
tempFilesList.push(files[0]);
// replace filelist with first-element file list
files = tempFilesList;
// TOOD translate?
let notification = new GlobalNotificationModel(getLangText('Only one file allowed (took first one)'), 'danger', 10000);
GlobalNotificationActions.appendGlobalNotification(notification);
}
// As mentioned already in the propTypes declaration, in some instances we need to calculate the
// md5 hash of a file locally and just upload a txt file containing that hash.
//
// In the view this only happens when the user is allowed to do local hashing as well
// as when the correct method prop is present ('hash' and not 'upload')
if (this.props.enableLocalHashing && this.props.uploadMethod === 'hash') {
const convertedFilePromises = [];
let overallFileSize = 0;
// "files" is not a classical Javascript array but a Javascript FileList, therefore
// we can not use map to convert values
for(let i = 0; i < files.length; i++) {
// for calculating the overall progress of all submitted files
// we'll need to calculate the overall sum of all files' sizes
overallFileSize += files[i].size;
// also, we need to set the files' initial progress value
files[i].progress = 0;
// since the actual computation of a file's hash is an async task ,
// we're using promises to handle that
let hashedFilePromise = computeHashOfFile(files[i]);
convertedFilePromises.push(hashedFilePromise);
}
// To react after the computation of all files, we define the resolvement
// with the all function for iterables and essentially replace all original files
// with their txt representative
Q.all(convertedFilePromises)
.progress(({index, value: {progress, reject}}) => {
// hashing progress has been aborted from outside
// To get out of the executing, we need to call reject from the
// inside of the promise's execution.
// This is why we're passing (along with value) a function that essentially
// just does that (calling reject(err))
//
// In the promises catch method, we're then checking if the interruption
// was due to that error or another generic one.
if(this.state.hashingProgress === -1) {
reject(new Error(getLangText('Hashing canceled')));
}
// update file's progress
files[index].progress = progress;
// calculate weighted average for overall progress of all
// currently hashing files
let overallHashingProgress = 0;
for(let i = 0; i < files.length; i++) {
let filesSliceOfOverall = files[i].size / overallFileSize;
overallHashingProgress += filesSliceOfOverall * files[i].progress;
}
// Multiply by 100, since react-progressbar expects decimal numbers
this.setState({ hashingProgress: overallHashingProgress * 100});
})
.then((convertedFiles) => {
// clear hashing progress, since its done
this.setState({ hashingProgress: -2});
// actually replacing all files with their txt-hash representative
files = convertedFiles;
// routine for adding all the files submitted to fineuploader for actual uploading them
// to the server
this.state.uploader.addFiles(files);
this.synchronizeFileLists(files);
})
.catch((err) => {
// If the error is that hashing has been canceled, we want to display a success
// message instead of a danger message
let typeOfMessage = 'danger';
if(err.message === getLangText('Hashing canceled')) {
typeOfMessage = 'success';
this.setState({ hashingProgress: -2 });
} else {
// if there was a more generic error, we also log it
console.logGlobal(err);
}
let notification = new GlobalNotificationModel(err.message, typeOfMessage, 5000);
GlobalNotificationActions.appendGlobalNotification(notification);
});
// if we're not hashing the files locally, we're just going to hand them over to fineuploader
// to upload them to the server
} else {
if(files.length > 0) {
this.state.uploader.addFiles(files);
this.synchronizeFileLists(files);
this.setState({
uploadInProgress: true
});
}
}
},
// ReactFineUploader is essentially just a react layer around s3 fineuploader.
// However, since we need to display the status of a file (progress, uploading) as well as
// be able to execute actions on a currently uploading file we need to exactly sync the file list
// fineuploader is keeping internally.
//
// Unfortunately though fineuploader is not keeping all of a File object's properties after
// submitting them via .addFiles (it deletes the type, key as well as the ObjectUrl (which we need for
// displaying a thumbnail)), we need to readd them manually after each file that gets submitted
// to the dropzone.
// This method is essentially taking care of all these steps.
synchronizeFileLists(files) {
let oldFiles = this.state.filesToUpload;
let oldAndNewFiles = this.state.uploader.getUploads();
// Add fineuploader specific information to new files
for(let i = 0; i < oldAndNewFiles.length; i++) {
for(let j = 0; j < files.length; j++) {
if(oldAndNewFiles[i].originalName === files[j].name) {
oldAndNewFiles[i].progress = 0;
oldAndNewFiles[i].type = files[j].type;
oldAndNewFiles[i].url = URL.createObjectURL(files[j]);
}
}
}
// and re-add fineuploader specific information for old files as well
for(let i = 0; i < oldAndNewFiles.length; i++) {
for(let j = 0; j < oldFiles.length; j++) {
// EXCEPTION:
//
// Files do not necessarily come from the user's hard drive but can also be fetched
// from Amazon S3. This is handled in onSessionRequestComplete.
//
// If the user deletes one of those files, then fineuploader will still keep it in his
// files array but with key, progress undefined and size === -1 but
// status === FileStatus.UPLOAD_SUCCESSFUL.
// This poses a problem as we depend on the amount of files that have
// status === FileStatus.UPLOAD_SUCCESSFUL, therefore once the file is synced,
// we need to tag its status as FileStatus.DELETED (which basically happens here)
if(oldAndNewFiles[i].size === -1 && (!oldAndNewFiles[i].progress || oldAndNewFiles[i].progress === 0)) {
oldAndNewFiles[i].status = FileStatus.DELETED;
}
if(oldAndNewFiles[i].originalName === oldFiles[j].name) {
oldAndNewFiles[i].progress = oldFiles[j].progress;
oldAndNewFiles[i].type = oldFiles[j].type;
oldAndNewFiles[i].url = oldFiles[j].url;
oldAndNewFiles[i].key = oldFiles[j].key;
}
}
}
// set the new file array
let filesToUpload = React.addons.update(this.state.filesToUpload, { $set: oldAndNewFiles });
this.setState({ filesToUpload }, () => {
// when files have been dropped or selected by a user, we want to propagate that
// information to the outside components, so they can act on it (in our case, because
// we want the user to define a thumbnail when the actual work is not renderable
// (like e.g. a .zip file))
if(typeof this.props.handleChangedFile === 'function') {
// its save to assume that the last file in `filesToUpload` is always
// the latest file added
this.props.handleChangedFile(this.state.filesToUpload.slice(-1)[0]);
}
});
},
render() {
const { errorState: { errorClass }, filesToUpload, uploadInProgress } = this.state;
const { areAssetsDownloadable,
areAssetsEditable,
enableLocalHashing,
fileClassToUpload,
fileInputElement: FileInputElement,
multiple,
showErrorPrompt,
uploadMethod } = this.props;
// Only show the error state once all files are finished
const showError = !uploadInProgress && showErrorPrompt && errorClass != null;
const props = {
multiple,
areAssetsDownloadable,
areAssetsEditable,
enableLocalHashing,
uploadMethod,
fileClassToUpload,
filesToUpload,
uploadInProgress,
errorClass,
showError,
onDrop: this.handleUploadFile,
handleDeleteFile: this.handleDeleteFile,
handleCancelFile: this.handleCancelFile,
handlePauseFile: this.handlePauseFile,
handleResumeFile: this.handleResumeFile,
handleRetryFiles: this.handleRetryFiles,
handleCancelHashing: this.handleCancelHashing,
dropzoneInactive: this.isDropzoneInactive(),
hashingProgress: this.state.hashingProgress,
allowedExtensions: this.getAllowedExtensions()
};
return (
<FileInputElement
ref="fileInput"
{...props} />
);
}
});
export default ReactS3FineUploader;