fix errors & support login in network

src/network.js

@@ -1,4 +1,4 @@
-class Request {
+class RequestWrapper {
 	constructor(promise, controller) {
 		this._promise = promise;
 		this._controller = controller;
@@ -8,37 +8,45 @@ class Request {
 		this._controller.abort();
 	}
 
-	get response() {
+	response() {
 		return this._promise;
 	}
 }
 
-export class Network {
+export default class Network {
 	constructor(homeserver, accessToken) {
 		this._homeserver = homeserver;
 		this._accessToken = accessToken;
 	}
 
 	_url(csPath) {
-		return `${this._homeserver}/_matrix/client/r0/${csPath}`;
+		return `${this._homeserver}/_matrix/client/r0${csPath}`;
 	}
 
-	_request(method, csPath, queryParams = {}) {
+	_request(method, csPath, queryParams = {}, body) {
 		const queryString = Object.entries(queryParams)
 			.filter(([name, value]) => value !== undefined)
-			.map(([name, value]) => `${encodeURIComponent(name)}=${encodeURIComponent(value)}`);
+			.map(([name, value]) => `${encodeURIComponent(name)}=${encodeURIComponent(value)}`)
 			.join("&");
 		const url = this._url(`${csPath}?${queryString}`);
-		const request = new Request(url);
-		const headers = request.headers;
+		let bodyString;
+		const headers = new Headers();
+		if (this._accessToken) {
 			headers.append("Authorization", `Bearer ${this._accessToken}`);
+		}
 		headers.append("Accept", "application/json");
-		if (false/* body */) {
+		if (body) {
 			headers.append("Content-Type", "application/json");
+			bodyString = JSON.stringify(body);
 		}
 		const controller = new AbortController();
 		// TODO: set authenticated headers with second arguments, cache them
-		let promise = fetch(request, {signal: controller.signal});
+		let promise = fetch(url, {
+			method,
+			headers,
+			body: bodyString,
+			signal: controller.signal
+		});
 		promise = promise.then(response => {
 			if (response.ok) {
 				return response.json();
@@ -49,10 +57,29 @@ export class Network {
 				}
 			}
 		});
-		return new Request(promise, controller);
+		return new RequestWrapper(promise, controller);
+	}
+
+	_post(csPath, queryParams, body) {
+		return this._request("POST", csPath, queryParams, body);
+	}
+
+	_get(csPath, queryParams, body) {
+		return this._request("GET", csPath, queryParams, body);
 	}
 
 	sync(timeout = 0, since = undefined) {
-		return this._request("GET", "/sync", {since, timeout});
+		return this._get("/sync", {since, timeout});
+	}
+
+	passwordLogin(username, password) {
+        return this._post("/login", undefined, {
+          "type": "m.login.password",
+          "identifier": {
+            "type": "m.id.user",
+            "user": username
+          },
+          "password": password
+        });
 	}
 }