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import mitt from 'mitt';
const log = process.env.NODE_ENV === 'development'
? (...args) => window.console.log('%cwidget%c', 'color: red', 'color: initial', ...args)
: () => {};
const WIDGET_OPEN_WIDTH = 365;
const WIDGET_OPEN_HEIGHT = 525;
const WIDGET_MINIMIZED_WIDTH = 54;
const WIDGET_MINIMIZED_HEIGHT = 54;
const WIDGET_MARGIN = 16;
window.RocketChat = window.RocketChat || { _: [] };
const config = {};
let widget;
let iframe;
let hookQueue = [];
let ready = false;
let smallScreen = false;
let scrollPosition;
let widget_height;
export const validCallbacks = [
'chat-maximized',
'chat-minimized',
'chat-started',
'chat-ended',
'pre-chat-form-submit',
'offline-form-submit',
'show-widget',
'hide-widget',
'assign-agent',
'agent-status-change',
'queue-position-change',
'no-agent-online',
];
const callbacks = mitt();
function registerCallback(eventName, fn) {
if (validCallbacks.indexOf(eventName) === -1) {
return false;
}
return callbacks.on(eventName, fn);
}
function emitCallback(eventName, data) {
if (typeof data !== 'undefined') {
callbacks.emit(eventName, data);
} else {
callbacks.emit(eventName);
}
}
// hooks
function callHook(action, params) {
if (!ready) {
return hookQueue.push([action, params]);
}
const data = {
src: 'rocketchat',
fn: action,
args: params,
};
iframe.contentWindow.postMessage(data, '*');
}
const updateWidgetStyle = (isOpened) => {
if (smallScreen && isOpened) {
scrollPosition = document.documentElement.scrollTop;
document.body.classList.add('rc-livechat-mobile-full-screen');
} else {
document.body.classList.remove('rc-livechat-mobile-full-screen');
if (smallScreen) {
document.documentElement.scrollTop = scrollPosition;
}
}
if (isOpened) {
widget.style.left = smallScreen ? '0' : 'auto';
/**
* If we use widget.style.height = smallScreen ? '100vh' : ...
* In above case some browser's viewport height is not rendered correctly
* so, as 100vh will resolve to 100% of the current viewport height,
* so fixed it to 100% avoiding problem for some browsers. Similar resolution
* for widget.style.width
*/
widget.style.height = smallScreen ? '100%' : `${ WIDGET_MARGIN + widget_height + WIDGET_MARGIN + WIDGET_MINIMIZED_HEIGHT }px`;
widget.style.width = smallScreen ? '100%' : `${ WIDGET_MARGIN + WIDGET_OPEN_WIDTH + WIDGET_MARGIN }px`;
} else {
widget.style.left = 'auto';
widget.style.width = `${ WIDGET_MARGIN + WIDGET_MINIMIZED_WIDTH + WIDGET_MARGIN }px`;
widget.style.height = `${ WIDGET_MARGIN + WIDGET_MINIMIZED_HEIGHT + WIDGET_MARGIN }px`;
}
};
const createWidget = (url) => {
widget = document.createElement('div');
widget.className = 'rocketchat-widget';
widget.style.position = 'fixed';
widget.style.width = `${ WIDGET_MARGIN + WIDGET_MINIMIZED_WIDTH + WIDGET_MARGIN }px`;
widget.style.height = `${ WIDGET_MARGIN + WIDGET_MINIMIZED_HEIGHT + WIDGET_MARGIN }px`;
widget.style.maxHeight = '100vh';
widget.style.bottom = '0';
widget.style.right = '0';
widget.style.zIndex = '12345';
widget.dataset.state = 'closed';
const container = document.createElement('div');
container.className = 'rocketchat-container';
container.style.width = '100%';
container.style.height = '100%';
iframe = document.createElement('iframe');
iframe.id = 'rocketchat-iframe';
iframe.allowTransparency = 'true';
iframe.src = url;
iframe.style.width = '100%';
iframe.style.height = '100%';
iframe.style.border = 'none';
iframe.style.backgroundColor = 'transparent';
container.appendChild(iframe);
widget.appendChild(container);
document.body.appendChild(widget);
const handleMediaQueryTest = ({ matches }) => {
if (!widget) {
return;
}
smallScreen = matches;
updateWidgetStyle(widget.dataset.state === 'opened');
callHook('setExpanded', smallScreen);
};
const mediaQueryList = window.matchMedia('screen and (max-device-width: 480px)');
mediaQueryList.addListener(handleMediaQueryTest);
handleMediaQueryTest(mediaQueryList);
};
const openWidget = () => {
if (widget.dataset.state === 'opened') {
return;
}
widget_height = WIDGET_OPEN_HEIGHT;
updateWidgetStyle(true);
widget.dataset.state = 'opened';
iframe.focus();
emitCallback('chat-maximized');
};
const resizeWidget = (height) => {
widget_height = height;
updateWidgetStyle(true);
widget.dataset.state = 'triggered';
};
function closeWidget() {
if (widget.dataset.state === 'closed') {
return;
}
updateWidgetStyle(false);
widget.dataset.state = 'closed';
emitCallback('chat-minimized');
}
const api = {
popup: null,
ready() {
ready = true;
if (hookQueue.length > 0) {
hookQueue.forEach(function(hookParams) {
callHook.apply(this, hookParams);
});
hookQueue = [];
}
},
minimizeWindow() {
closeWidget();
},
restoreWindow() {
if (api.popup && api.popup.closed !== true) {
api.popup.close();
api.popup = null;
}
openWidget();
},
openPopout() {
closeWidget();
api.popup = window.open(`${ config.url }${ config.url.lastIndexOf('?') > -1 ? '&' : '?' }mode=popout`,
'livechat-popout', `width=${ WIDGET_OPEN_WIDTH }, height=${ widget_height }, toolbars=no`);
api.popup.focus();
},
openWidget() {
openWidget();
},
resizeWidget(height) {
resizeWidget(height);
},
removeWidget() {
document.body.removeChild(widget);
},
callback(eventName, data) {
emitCallback(eventName, data);
},
showWidget() {
iframe.style.display = 'initial';
emitCallback('show-widget');
},
hideWidget() {
iframe.style.display = 'none';
emitCallback('hide-widget');
},
resetDocumentStyle() {
document.body.classList.remove('rc-livechat-mobile-full-screen');
},
setFullScreenDocumentMobile() {
smallScreen && document.body.classList.add('rc-livechat-mobile-full-screen');
},
};
function pageVisited(change) {
callHook('pageVisited', {
change,
location: JSON.parse(JSON.stringify(document.location)),
title: document.title,
});
}
function setCustomField(key, value, overwrite) {
if (typeof overwrite === 'undefined') {
overwrite = true;
}
callHook('setCustomField', [key, value, overwrite]);
}
function setTheme(theme) {
callHook('setTheme', theme);
}
function setDepartment(department) {
callHook('setDepartment', department);
}
function setBusinessUnit(businessUnit) {
callHook('setBusinessUnit', businessUnit);
}
function clearBusinessUnit() {
callHook('clearBusinessUnit');
}
function setGuestToken(token) {
callHook('setGuestToken', token);
}
function setGuestName(name) {
callHook('setGuestName', name);
}
function setGuestEmail(email) {
callHook('setGuestEmail', email);
}
function registerGuest(guest) {
callHook('registerGuest', guest);
}
function clearDepartment() {
callHook('clearDepartment');
}
function setAgent(agent) {
callHook('setAgent', agent);
}
function setLanguage(language) {
callHook('setLanguage', language);
}
function showWidget() {
callHook('showWidget');
}
function hideWidget() {
callHook('hideWidget');
}
function maximizeWidget() {
callHook('maximizeWidget');
}
function minimizeWidget() {
callHook('minimizeWidget');
}
function initialize(params) {
for (const method in params) {
if (!params.hasOwnProperty(method)) {
continue;
}
switch (method) {
case 'customField':
const { key, value, overwrite } = params[method];
setCustomField(key, value, overwrite);
continue;
case 'setCustomFields':
if (!Array.isArray(params[method])) {
console.log('Error: Invalid parameters. Value must be an array of objects');
continue;
}
params[method].forEach((data) => {
const { key, value, overwrite } = data;
setCustomField(key, value, overwrite);
});
continue;
case 'theme':
setTheme(params[method]);
continue;
case 'department':
setDepartment(params[method]);
continue;
case 'businessUnit': {
setBusinessUnit(params[method]);
continue;
}
case 'guestToken':
setGuestToken(params[method]);
continue;
case 'guestName':
setGuestName(params[method]);
continue;
case 'guestEmail':
setGuestEmail(params[method]);
continue;
case 'registerGuest':
registerGuest(params[method]);
continue;
case 'language':
setLanguage(params[method]);
continue;
case 'agent':
setAgent(params[method]);
continue;
default:
continue;
}
}
}
const currentPage = {
href: null,
title: null,
};
const attachMessageListener = () => {
window.addEventListener('message', (msg) => {
if (typeof msg.data === 'object' && msg.data.src !== undefined && msg.data.src === 'rocketchat') {
if (api[msg.data.fn] !== undefined && typeof api[msg.data.fn] === 'function') {
const args = [].concat(msg.data.args || []);
log(`api.${ msg.data.fn }`, ...args);
api[msg.data.fn].apply(null, args);
}
}
}, false);
};
const trackNavigation = () => {
setInterval(() => {
if (document.location.href !== currentPage.href) {
pageVisited('url');
currentPage.href = document.location.href;
}
if (document.title !== currentPage.title) {
pageVisited('title');
currentPage.title = document.title;
}
}, 800);
};
const init = (url) => {
if (!url) {
return;
}
config.url = url;
createWidget(url);
attachMessageListener();
trackNavigation();
};
if (typeof window.initRocket !== 'undefined') {
console.warn('initRocket is now deprecated. Please update the livechat code.');
init(window.initRocket[0]);
}
if (typeof window.RocketChat.url !== 'undefined') {
init(window.RocketChat.url);
}
const queue = window.RocketChat._;
window.RocketChat._.push = function(c) {
c.call(window.RocketChat.livechat);
};
window.RocketChat = window.RocketChat._.push;
// exports
window.RocketChat.livechat = {
// methods
pageVisited,
setCustomField,
initialize,
setTheme,
setDepartment,
clearDepartment,
setGuestToken,
setGuestName,
setGuestEmail,
setAgent,
registerGuest,
setLanguage,
showWidget,
hideWidget,
maximizeWidget,
minimizeWidget,
setBusinessUnit,
clearBusinessUnit,
// callbacks
onChatMaximized(fn) { registerCallback('chat-maximized', fn); },
onChatMinimized(fn) { registerCallback('chat-minimized', fn); },
onChatStarted(fn) { registerCallback('chat-started', fn); },
onChatEnded(fn) { registerCallback('chat-ended', fn); },
onPrechatFormSubmit(fn) { registerCallback('pre-chat-form-submit', fn); },
onOfflineFormSubmit(fn) { registerCallback('offline-form-submit', fn); },
onWidgetShown(fn) { registerCallback('show-widget', fn); },
onWidgetHidden(fn) { registerCallback('hide-widget', fn); },
onAssignAgent(fn) { registerCallback('assign-agent', fn); },
onAgentStatusChange(fn) { registerCallback('agent-status-change', fn); },
onQueuePositionChange(fn) { registerCallback('queue-position-change', fn); },
onServiceOffline(fn) { registerCallback('no-agent-online', fn); },
};
// proccess queue
queue.forEach((c) => {
c.call(window.RocketChat.livechat);
});
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