plc_control/web/js/logs.js

56 lines
1.5 KiB
JavaScript

import { dom } from "./dom.js";
import { formatValue } from "./points.js";
import { state } from "./state.js";
export function appendLog(line) {
const div = document.createElement("div");
div.className = "log-line";
div.textContent = line;
dom.logView.appendChild(div);
dom.logView.scrollTop = dom.logView.scrollHeight;
}
export function startLogs() {
if (state.logSource) {
state.logSource.close();
}
state.logSource = new EventSource("/api/logs/stream");
state.logSource.addEventListener("log", (event) => {
const data = JSON.parse(event.data);
(data.lines || []).forEach(appendLog);
});
}
export function startPointSocket() {
const protocol = location.protocol === "https:" ? "wss" : "ws";
const ws = new WebSocket(`${protocol}://${location.host}/ws/public`);
state.pointSocket = ws;
ws.onmessage = (event) => {
try {
const payload = JSON.parse(event.data);
if (payload.type !== "PointNewValue" && payload.type !== "point_new_value") {
return;
}
const data = payload.data;
const entry = state.pointEls.get(data.point_id);
if (!entry) {
return;
}
entry.value.textContent = formatValue(data);
entry.quality.className = `badge quality-${(data.quality || "unknown").toLowerCase()}`;
entry.quality.textContent = (data.quality || "unknown").toUpperCase();
entry.time.textContent = data.timestamp || "--";
} catch {
// ignore malformed messages
}
};
ws.onclose = () => {
window.setTimeout(startPointSocket, 2000);
};
}