First commit

wetter.js

@@ -0,0 +1,98 @@
+/**
+ * wetter.js – Hauptprogramm
+ *
+ * Ablauf beim Start:
+ *   1. SQLite-Datenbank öffnen (wetter.db)
+ *   2. Letzten archivierten Zeitstempel lesen → Archiv nachladen
+ *   3. Archivdaten in DB schreiben
+ *   4. LOOP-Schleife starten: alle 30 s Echtzeit-Daten holen & in DB schreiben
+ */
+
+import "dotenv/config";
+import path    from "path";
+import { fileURLToPath } from "url";
+
+import { openDb, getLatestTs, insertRecords, insertRecord } from "./db.js";
+import { readArchiveSince, connectStation, fetchLoopData }  from "./davis.js";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const DB_PATH          = process.env.DB_PATH ?? path.join(__dirname, "wetter.db");
+const LOOP_INTERVAL_MS = Number(process.env.LOOP_INTERVAL_MS ?? 30_000);
+
+// ── Hilfsfunktionen ────────────────────────────────────────────────────────
+
+const fmt24h = (d) => d.toLocaleTimeString("de-DE", { hour12: false });
+const fmtDateTime = (d) => d.toLocaleString("de-DE", { hour12: false });
+function log(msg)  { console.log (`[${fmt24h(new Date())}] ${msg}`); }
+function warn(msg) { console.warn(`[${fmt24h(new Date())}] WARN  ${msg}`); }
+function err(msg)  { console.error(`[${fmt24h(new Date())}] ERROR ${msg}`); }
+
+// ── Archiv nachladen ───────────────────────────────────────────────────────
+
+async function catchUpArchive(db) {
+    const latestTs = getLatestTs(db);
+    const since    = latestTs
+        ? new Date(latestTs * 1000)                         // ab letztem DB-Eintrag
+        : new Date(Date.now() - 24 * 60 * 60 * 1000);      // Fallback: letzte 24 h
+
+    log(`Lade Archiv ab ${fmtDateTime(since)} ...`);
+
+    let lastPct = -1;
+    const records = await readArchiveSince(since, (cur, total) => {
+        const pct = Math.floor(cur / total * 100);
+        if (pct !== lastPct) {
+            process.stdout.write(`\r  Archiv: ${pct}% (Seite ${cur}/${total})`);
+            lastPct = pct;
+        }
+    });
+    process.stdout.write("\r\x1b[K"); // Fortschrittszeile löschen
+
+    if (records.length === 0) {
+        log("Archiv: keine neuen Datensätze.");
+        return;
+    }
+
+    const inserted = insertRecords(db, records, "archive");
+    log(`Archiv: ${inserted} neue Datensätze gespeichert (${records.length} empfangen).`);
+}
+
+// ── LOOP-Schleife ──────────────────────────────────────────────────────────
+
+async function runLoop(db) {
+    let station = null;
+
+    async function connect() {
+        station = await connectStation();
+        log("Verbunden mit Wetterstation.");
+    }
+
+    async function tick() {
+        try {
+            const data = await fetchLoopData(station);
+            insertRecord(db, data, "loop");
+            log(
+                `Außen: ${data.tempOut?.toFixed(1)}°C  ` +
+                `Feuchte: ${data.humOut}%  ` +
+                `Wind: ${data.windAvg} km/h  ` +
+                `Druck: ${data.pressure} hPa`
+            );
+        } catch (e) {
+            warn("LOOP-Fehler: " + e.message + " – Verbindung wird neu aufgebaut.");
+            try { await station?.disconnect(); } catch {}
+            station = null;
+            try { await connect(); } catch (ce) { err("Reconnect fehlgeschlagen: " + ce.message); }
+        }
+        setTimeout(tick, LOOP_INTERVAL_MS);
+    }
+
+    await connect();
+    tick();
+}
+
+// ── Hauptprogramm ──────────────────────────────────────────────────────────
+
+const db = openDb(DB_PATH);
+log(`Datenbank: ${DB_PATH}`);
+
+await catchUpArchive(db);
+await runLoop(db);