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// dtp-app.js
// Copyright (C) 2022 DTP Technologies, LLC
// License: Apache-2.0
'use strict';
import { Upload } from 'upload';
import DtpLog from './dtp-log';
import DtpSocket from './dtp-socket';
import DtpDisplayEngine from './dtp-display-engine';
export default class DtpApp {
constructor (component, user) {
this.user = user;
this.log = new DtpLog(component);
this.log.debug('constructor', 'creating DisplayEngine instance');
this.displayEngine = new DtpDisplayEngine();
this.updateTimestamps();
}
async connect (options) {
try {
this.log.debug('connect', 'creating WebSocket interface');
this.socket = new DtpSocket();
this.log.debug('connect', 'connecting WebSocket platform');
await this.socket.connect(options);
this.log.info('connect', 'DTP framework online');
} catch (error) {
this.log.error('connect', 'failed to connect', { error });
UIkit.modal.alert(`Failed to connect to server: ${error.message}`);
}
}
async showForm (event, formUrl) {
event.preventDefault();
event.stopPropagation();
try {
const response = await fetch(formUrl, { method: 'GET' });
const html = await response.text();
this.currentModal = UIkit.modal.dialog(html);
} catch (error) {
UIkit.modal.alert(`Failed to display form: ${error.message}`);
}
return true;
}
async submitForm (event, userAction) {
event.preventDefault();
event.stopPropagation();
try {
const formElement = event.currentTarget || event.target;
const form = new FormData(formElement);
// include the submitter if we have one and it presents all required data
if (event.submitter && event.submitter.name && event.submitter.value) {
form.append(event.submitter.name, event.submitter.value);
}
this.log.info('submitForm', userAction, { event, action: formElement.action });
const response = await fetch(formElement.action, {
method: formElement.method,
body: form,
});
if (!response.ok) {
let json;
try {
json = await response.json();
} catch (error) {
throw new Error('Server error');
}
throw new Error(json.message || 'Server error');
}
await this.processResponse(response);
} catch (error) {
UIkit.modal.alert(`Failed to ${userAction}: ${error.message}`);
} finally {
if (this.currentModal) {
this.currentModal.hide();
delete this.currentModal;
}
}
return;
}
async submitFormWithProgress (event) {
event.preventDefault();
event.stopPropagation();
const formElement = event.currentTarget || event.target;
const form = new FormData(formElement);
const progressDialog = document.querySelector(formElement.getAttribute('data-progress-dialog') || '#upload-progress-dialog');
const progressBar = document.querySelector(formElement.getAttribute('data-progress-element') || 'progress#upload-progress');
const progressPrompt = document.querySelector(formElement.getAttribute('data-progress-prompt') || '#upload-progress-prompt');
const upload = new Upload({
url: formElement.getAttribute('action'),
form,
});
upload.on('progress', (progress) => {
this.log.info('submitSemitism', 'upload progress', { progress });
progressBar.value = Math.round(progress * 100.0);
});
progressDialog.removeAttribute('hidden');
const response = await upload.upload();
progressPrompt.textContent = 'Upload complete...';
this.log.info('submitSemitism', 'upload response', { response });
const json = JSON.parse(response.data);
await this.processResponseJSON(json);
return true;
}
async processResponse (response) {
const json = await response.json();
return this.processResponseJSON(json);
}
async processResponseJSON (json) {
if (!json.success) {
this.log.error('processResponse', json.message);
throw new Error(json.message);
}
if (json.displayList) {
this.displayEngine.executeDisplayList(json.displayList);
}
}
async validateTextElement (element, elementName, options) {
const DEFAULT_MAX_CHARS = 1000;
const DEFAULT_OPTIONS = {
maxLength: DEFAULT_MAX_CHARS,
minLength: 1,
warnLengths: [80, 150],
feedback: {
textEmpty: `The ${elementName} can't be empty`,
textTooShort: "Keep going...",
textValid: "You're off to a great start!",
textLengthWarn: [
"This is getting a little crazy",
`Only ${Math.max(0, options.maxLength - element.value.length)} characters left`,
],
textMaxLength: `The ${elementName} is as long as it can be.`,
textTooLong: `${elementName} is too long by ${element.value.length - options.maxLength} characters`,
}
};
options = Object.assign(DEFAULT_OPTIONS, options);
if (options.prompt) {
options.prompt.textContent = `${element.value.length} of ${options.maxLength} max`;
}
let isValid = true;
if (element.value.length === 0 || element.value.length > options.maxLength) {
element.classList.remove('uk-form-success');
element.classList.remove('uk-form-warning');
element.classList.add('uk-form-danger');
isValid = false;
} else if (element.value.length > options.warnLengths[1]) {
element.classList.remove('uk-form-success');
element.classList.remove('uk-form-danger');
element.classList.add('uk-form-warning');
} else {
element.classList.remove('uk-form-danger');
element.classList.remove('uk-form-warning');
element.classList.remove('uk-form-success');
}
if (element.value.length === 0) {
window.dtp.submit.prompt.textContent = options.feedback.textEmpty;
isValid = false;
} else if (options.minLength && (element.value.length < options.minLength)) {
window.dtp.submit.prompt.textContent = options.feedback.textTooShort;
isValid = false;
} else if (element.value.length < options.warnLengths[0]) {
window.dtp.submit.prompt.textContent = options.feedback.textValid;
} else if (element.value.length < options.warnLengths[1]) {
window.dtp.submit.prompt.textContent = options.feedback.textLengthWarn[0];
} else if (element.value.length < options.maxLength) {
window.dtp.submit.prompt.textContent = options.feedback.textLengthWarn[1];
window.dtp.submit.prompt.classList.add('uk-text-bold');
} else if (element.value.length === options.maxLength) {
window.dtp.submit.prompt.textContent = options.feedback.textMaxLength;
window.dtp.submit.prompt.classList.add('uk-text-bold');
} else {
window.dtp.submit.prompt.textContent = options.feedback.textTooLong;
window.dtp.submit.prompt.classList.add('uk-text-bold');
isValid = false;
}
return isValid;
}
/**
* Finds every element with the `data-dtp-timestamp` attribute, and sets the
* text content of that element to the client-local representation of that
* timestamp using the formatting provided by the `data-dtp-timestamp-format`
* attribute.
*/
updateTimestamps ( ) {
const nodeList = document.querySelectorAll("[data-dtp-timestamp]");
for (const ts of nodeList) {
const date = ts.getAttribute('data-dtp-timestamp');
if (!date) {
continue;
}
const format = ts.getAttribute('data-dtp-timestamp-format');
switch (format) {
case 'date':
ts.textContent = moment(date).format('MMM DD, YYYY');
break;
case 'datetime':
ts.textContent = moment(date).format('MMMM D, h:mm a');
break;
case 'fuzzy':
ts.textContent = moment(date).fromNow();
break;
case 'timestamp':
default:
ts.textContent = moment(date).format('hh:mm:ss a');
break;
}
}
}
}