72 lines
1.5 KiB
JavaScript
72 lines
1.5 KiB
JavaScript
import * as parser from "./parser.js";
|
|
|
|
let ws;
|
|
let commandQueue = [];
|
|
let current;
|
|
|
|
function onMessage(e) {
|
|
if (current) {
|
|
let lines = JSON.parse(e.data);
|
|
let last = lines.pop();
|
|
if (last.startsWith("OK")) {
|
|
current.resolve(lines);
|
|
} else {
|
|
current.reject(last);
|
|
}
|
|
current = null;
|
|
}
|
|
processQueue();
|
|
}
|
|
|
|
function onError(e) {
|
|
console.error(e);
|
|
ws = null; // fixme
|
|
}
|
|
|
|
function onClose(e) {
|
|
console.warn(e);
|
|
ws = null; // fixme
|
|
}
|
|
|
|
function processQueue() {
|
|
if (current || commandQueue.length == 0) { return; }
|
|
current = commandQueue.shift();
|
|
ws.send(current.cmd);
|
|
}
|
|
|
|
export function escape(str) {
|
|
return str.replace(/(['"\\])/g, "\\$1");
|
|
}
|
|
|
|
export async function command(cmd) {
|
|
if (cmd instanceof Array) { cmd = ["command_list_begin", ...cmd, "command_list_end"].join("\n"); }
|
|
|
|
return new Promise((resolve, reject) => {
|
|
commandQueue.push({cmd, resolve, reject});
|
|
processQueue();
|
|
});
|
|
}
|
|
|
|
export async function commandAndStatus(cmd) {
|
|
let lines = await command([cmd, "status", "currentsong"]);
|
|
return parser.linesToStruct(lines);
|
|
}
|
|
|
|
export async function status() {
|
|
let lines = await command(["status", "currentsong"]);
|
|
return parser.linesToStruct(lines);
|
|
}
|
|
|
|
export async function init() {
|
|
return new Promise((resolve, reject) => {
|
|
try {
|
|
ws = new WebSocket("ws://localhost:8080");
|
|
} catch (e) { reject(e); }
|
|
current = {resolve, reject};
|
|
|
|
ws.addEventListener("error", onError);
|
|
ws.addEventListener("message", onMessage);
|
|
ws.addEventListener("close", onClose);
|
|
});
|
|
}
|