add path to get remaining resources

Signed-off-by: Arthur Lu <learthurgo@gmail.com>

db.js

@@ -91,4 +91,17 @@ function releaseResources (user, resources) {
 	}
 }
 
-module.exports = {init, requestResources, allocateResources, releaseResources};
+/**
+ * return a read only copy of the user resources
+ * @param {string} user user's proxmox username in the form username@authrealm
+ * @returns {Object} user's remaining resources as k-v pairs with resource name as keys and resource ammount as values
+ */
+function getResources (user) {
+	let returnVal = {};
+	if(user in db) {
+		Object.assign(returnVal, db[user]);
+	}
+	return returnVal;
+}
+
+module.exports = {init, requestResources, allocateResources, releaseResources, getResources};

main.js

@@ -8,7 +8,7 @@ var api = require("./package.json");
 
 const {pveAPIToken, listenPort, domain} = require("./vars.js");
 const {checkAuth, requestPVE, handleResponse, getUnusedDiskData, getDiskConfig} = require("./pveutils.js");
-const {init, requestResources, allocateResources, releaseResources} = require("./db.js");
+const {init, requestResources, allocateResources, releaseResources, getResources} = require("./db.js");
 
 const app = express();
 app.use(helmet());
@@ -43,6 +43,16 @@ app.post("/api/proxmox/*", async (req, res) => { // proxy endpoint for POST prox
 	res.send(result.data, result.status);
 });
 
+app.get("/api/user/resources", async(req, res) => {
+	let auth = await checkAuth(req.cookies, vmpath);
+	if (!auth) {
+		res.status(401).send({auth: auth});
+		return;
+	}
+
+	return getResources(req.cookies.username);
+});
+
 app.post("/api/disk/detach", async (req, res) => {
 	let vmpath = `/nodes/${req.body.node}/${req.body.type}/${req.body.vmid}`;