73 lines
2.3 KiB
TypeScript
73 lines
2.3 KiB
TypeScript
import { Injectable } from "@angular/core";
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import * as randomString from "random-string";
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import { MembershipStateResponse, ScalarSuccessResponse } from "./models/scalar_responses";
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@Injectable()
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export class ScalarService {
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private static actionMap: {[key: string]: {resolve: (obj: any) => void, reject: (obj: any) => void}} = {};
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public static getAndRemoveActionHandler(requestKey: string): {resolve: (obj: any) => void, reject: (obj: any) => void} {
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let handler = ScalarService.actionMap[requestKey];
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ScalarService.actionMap[requestKey] = null;
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return handler;
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}
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constructor() {
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}
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public inviteUser(roomId: string, userId): Promise<ScalarSuccessResponse> {
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return this.callAction("invite", {
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room_id: roomId,
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user_id: userId
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});
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}
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public getMembershipState(roomId: string, userId: string): Promise<MembershipStateResponse> {
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return this.callAction("membership_state", {
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room_id: roomId,
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user_id: userId
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});
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}
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public close(): void {
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this.callAction("close_scalar", {});
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}
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private callAction(action, payload) {
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let requestKey = randomString({length: 20});
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return new Promise((resolve, reject) => {
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if (!window.opener) {
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// Mimic an error response from scalar
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reject({response: {error: {message: "No window.opener", _error: new Error("No window.opener")}}});
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return;
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}
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ScalarService.actionMap[requestKey] = {
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resolve: resolve,
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reject: reject
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};
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let request = JSON.parse(JSON.stringify(payload));
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request["request_id"] = requestKey;
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request["action"] = action;
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window.opener.postMessage(request, "*");
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});
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}
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}
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// Register the event listener here to ensure it gets created
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window.addEventListener("message", event => {
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if (!event.data) return;
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let requestKey = event.data["request_id"];
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if (!requestKey) return;
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let action = ScalarService.getAndRemoveActionHandler(requestKey);
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if (!action) return;
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if (event.data.response && event.data.response.error) action.reject(event.data);
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else action.resolve(event.data);
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});
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