first commit

api/Dockerfile

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+FROM node:20-alpine
+
+WORKDIR /app
+
+RUN npm init -y && npm install express
+
+COPY server.js .
+COPY data.json .
+
+EXPOSE 3000
+
+CMD ["node", "server.js"]

api/data.json

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+{
+  "CO2": 2.43,
+  "CO": 0.56,
+  "BZ": 3.11,
+  "AQ": 100,
+  "updated_at": "2026-01-30T03:48:16.033Z"
+}

api/server.js

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+const express = require("express");
+const fs = require("fs");
+
+const app = express();
+const PORT = 3000;
+const DATA_FILE = "./data.json";
+
+// Helper: read data
+function readData() {
+  return JSON.parse(fs.readFileSync(DATA_FILE, "utf8"));
+}
+
+// Helper: write data
+function writeData(data) {
+  fs.writeFileSync(DATA_FILE, JSON.stringify(data, null, 2));
+}
+
+// ============================
+// GET /api/data → read values
+// ============================
+app.get("/data", (req, res) => {
+  try {
+    const data = readData();
+    res.json(data);
+  } catch (err) {
+    res.status(500).json({ error: "Gagal membaca data" });
+  }
+});
+
+// ===========================================
+// GET /api/update?co2=&co=&bz=&aq=
+// ===========================================
+app.get("/update", (req, res) => {
+  const { co2, co, bz, aq } = req.query;
+
+  if (!co2 || !co || !bz || !aq) {
+    return res.status(400).json({
+      error: "Parameter wajib: co2, co, bz, aq"
+    });
+  }
+
+  const newData = {
+    CO2: Number(co2),
+    CO: Number(co),
+    BZ: Number(bz),
+    AQ: Number(aq),
+    updated_at: new Date().toISOString()
+  };
+
+  try {
+    writeData(newData);
+    res.json({
+      message: "Data berhasil diperbarui",
+      data: newData
+    });
+  } catch (err) {
+    res.status(500).json({ error: "Gagal menyimpan data" });
+  }
+});
+
+app.listen(PORT, () => {
+  console.log(`API berjalan di port ${PORT}`);
+});