Moved the nodejs agent to its own subfolder to make room for my haskell agent

nodejs/database/systems.js

@@ -0,0 +1,71 @@
+import db from './db.js';
+
+const getSystemStatement = db.prepare(`SELECT data FROM systems WHERE data->>'symbol' = ?;`);
+const getSystemUpdatedStatement = db.prepare(`SELECT updated FROM systems WHERE data->>'symbol' = ?;`);
+const initStatement = db.prepare(`INSERT INTO config(key, value) VALUES ('systems_initialized', TRUE);`);
+const isInitStatement = db.prepare(`SELECT value FROM config WHERE key = 'systems_initialized'`);
+const setSystemStatement = db.prepare(`INSERT INTO systems(data) VALUES (json(?));`);
+const setSystemWaypointsStatement = db.prepare(`UPDATE systems SET data = (SELECT json_set(data, '$.waypoints', json(:waypoints)) FROM systems WHERE data->>'symbol' = :symbol), updated = :date WHERE data->>'symbol' = :symbol;`);
+
+export function init() {
+	try {
+		return initStatement.run().lastInsertRowid;
+	} catch (err) {
+		return null;
+	}
+}
+
+export function isInit() {
+	try {
+		return isInitStatement.get().value === '1';
+	} catch (err) {
+		return false;
+	}
+}
+
+export function getSystem(symbol) {
+	try {
+		const data = getSystemStatement.get(symbol);
+		if (data === undefined) {
+			return null;
+		}
+		return JSON.parse(data.data);
+	} catch (err) {
+		console.log(err);
+		return null;
+	}
+}
+
+export function getSystemUpdated(symbol) {
+	try {
+		const updated = getSystemUpdatedStatement.get(symbol);
+		if (updated === undefined) {
+			return null;
+		}
+		return updated.updated;
+	} catch (err) {
+		console.log(err);
+		return null;
+	}
+}
+
+export function setSystem(data) {
+	try {
+		return setSystemStatement.run(JSON.stringify(data)).lastInsertRowid;
+	} catch (err) {
+		return null;
+	}
+}
+
+export function setSystemWaypoints(symbol, waypoints) {
+	try {
+		return setSystemWaypointsStatement.run({
+			date: new Date().toISOString(),
+			symbol: symbol,
+			waypoints: JSON.stringify(waypoints),
+		}).changes;
+	} catch (err) {
+		console.log(err);
+		return null;
+	}
+}