Refactoring Room.ts to fetch map url automatically from ID

front/src/Connexion/Room.ts

@@ -1,10 +1,67 @@
+import Axios from "axios";
+import {API_URL} from "../Enum/EnvironmentVariable";
+
 export class Room {
-    public ID: string;
-    public url: string
-    
-    constructor(ID: string, url: string) {
-        this.ID = ID;
-        this.url = url;
+    public readonly id: string;
+    public readonly isPublic: boolean;
+    private mapUrl: string|undefined;
+    //public url: string
+
+    constructor(id: string/*, url: string*/) {
+        if (id.startsWith('/')) {
+            id = id.substr(1);
+        }
+        this.id = id;
+        if (id.startsWith('_/')) {
+            this.isPublic = true;
+        } else if (id.startsWith('@/')) {
+            this.isPublic = false;
+        } else {
+            throw new Error('Invalid room ID');
+        }
     }
-    
-}
+
+    public async getMapUrl(): Promise<string> {
+        return new Promise<string>(async (resolve, reject) => {
+            if (this.mapUrl !== undefined) {
+                resolve(this.mapUrl);
+                return;
+            }
+
+            if (this.isPublic) {
+                const match = /_\/[^\/]+\/(.+)/.exec(this.id)
+                if (!match) throw new Error('Could not extract url from "'+this.id+'"');
+                this.mapUrl = window.location.protocol+'//'+match[1];
+                resolve(this.mapUrl);
+                return;
+            } else {
+                // We have a private ID, we need to query the map URL from the server.
+                const urlParts = this.parsePrivateUrl(this.id);
+
+                const data:any = await Axios.get(`${API_URL}/map`, {
+                    params: urlParts
+                });
+
+                console.log('Map ', this.id, ' resolves to URL ', data.data.mapUrl);
+                resolve(data.data.mapUrl);
+                return;
+            }
+        });
+    }
+
+    private parsePrivateUrl(url: string): { organizationSlug: string, worldSlug: string, roomSlug?: string } {
+        const regex = /@\/([^\/]+)\/([^\/]+)(?:\/([^\/]*))?/gm;
+        const match = regex.exec(url);
+        if (!match) {
+            throw new Error('Invalid URL '+url);
+        }
+        let results: { organizationSlug: string, worldSlug: string, roomSlug?: string } = {
+            organizationSlug: match[1],
+            worldSlug: match[2],
+        }
+        if (match[3] !== undefined) {
+            results.roomSlug = match[3];
+        }
+        return results;
+    }
+}