Starting anew, before I changed to a custom chart

server/src/pingSensors.ts

@@ -0,0 +1,46 @@
+import {ISOSnapshot} from "./Snapshot";
+import {exec} from "child-process-promise";
+import path from "path";
+import fetch from "node-fetch";
+import {ClayPIError} from "./errors";
+
+async function pingSensors(): Promise<Omit<ISOSnapshot, "id">> {
+    try {
+        const process = await exec(`python3 ${path.resolve(__dirname + "/../scripts/pinger-test.py")}`);
+        const result = process.stdout;
+        const snapshotArray = result.split("\t").map(piece => piece.trim());
+        return {
+            time: snapshotArray[1],
+            temp: Number(snapshotArray[3]),
+            humidity: Number(snapshotArray[5]),
+            co2: Number(snapshotArray[7]),
+        };
+    } catch (err) {
+        throw new ClayPIError(
+            `Could not generate a new snapshot: Python error: ${err}. Have you installed python 3 and the necessary requirements?`,
+            "Could not generate a new snapshot."
+        );
+    }
+}
+
+async function submitToServer(snapshot: Omit<ISOSnapshot, "id">) {
+    await fetch(`http://localhost:${process.env.PORT}${process.env.SERVER_ROOT}/api/snapshots`, {
+        method: "POST",
+        body: JSON.stringify({ snapshots: [snapshot] }),
+        headers: {
+            "Content-type": "application/json"
+        }
+    });
+}
+
+export function startSensorPinger() {
+    const createAndSubmitNewSnapshot = async () => {
+        try {
+            await submitToServer(await pingSensors());
+        } catch (e) {
+            console.log(e);
+        }
+    };
+    createAndSubmitNewSnapshot();
+    setInterval(createAndSubmitNewSnapshot, (Number(process.env.SENSOR_PING_INTERVAL) ?? 30) * 1000);
+}