workadventure/front/src/iframe_api.ts

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import {ChatEvent, isChatEvent} from "./Api/Events/ChatEvent";
import {isIframeEventWrapper} from "./Api/Events/IframeEvent";
import {isUserInputChatEvent, UserInputChatEvent} from "./Api/Events/UserInputChatEvent";
import {Subject} from "rxjs";
import {EnterLeaveEvent, isEnterLeaveEvent} from "./Api/Events/EnterLeaveEvent";
interface WorkAdventureApi {
sendChatMessage(message: string, author: string): void;
onChatMessage(callback: (message: string) => void): void;
onEnterZone(name: string, callback: () => void): void;
onLeaveZone(name: string, callback: () => void): void;
}
declare global {
// eslint-disable-next-line no-var
var WA: WorkAdventureApi
}
type ChatMessageCallback = (message: string) => void;
const userInputChatStream: Subject<UserInputChatEvent> = new Subject();
const enterStreams: Map<string, Subject<EnterLeaveEvent>> = new Map<string, Subject<EnterLeaveEvent>>();
const leaveStreams: Map<string, Subject<EnterLeaveEvent>> = new Map<string, Subject<EnterLeaveEvent>>();
window.WA = {
/**
* Send a message in the chat.
* Only the local user will receive this message.
*/
sendChatMessage(message: string, author: string) {
window.parent.postMessage({
'type': 'chat',
'data': {
'message': message,
'author': author
} as ChatEvent
}, '*');
},
/**
* Listen to messages sent by the local user, in the chat.
*/
onChatMessage(callback: ChatMessageCallback): void {
userInputChatStream.subscribe((userInputChatEvent) => {
callback(userInputChatEvent.message);
});
},
onEnterZone(name: string, callback: () => void): void {
let subject = enterStreams.get(name);
if (subject === undefined) {
subject = new Subject<EnterLeaveEvent>();
enterStreams.set(name, subject);
}
subject.subscribe(callback);
},
onLeaveZone(name: string, callback: () => void): void {
let subject = leaveStreams.get(name);
if (subject === undefined) {
subject = new Subject<EnterLeaveEvent>();
leaveStreams.set(name, subject);
}
subject.subscribe(callback);
},
}
window.addEventListener('message', message => {
if (message.source !== window.parent) {
return; // Skip message in this event listener
}
const payload = message.data;
console.log(payload);
if (isIframeEventWrapper(payload)) {
const payloadData = payload.data;
if (payload.type === 'userInputChat' && isUserInputChatEvent(payloadData)) {
userInputChatStream.next(payloadData);
} else if (payload.type === 'enterEvent' && isEnterLeaveEvent(payloadData)) {
enterStreams.get(payloadData.name)?.next();
} else if (payload.type === 'leaveEvent' && isEnterLeaveEvent(payloadData)) {
leaveStreams.get(payloadData.name)?.next();
}
}
// ...
});