set/read file

pages/api/hello.js

@@ -1,5 +1,44 @@
 // Next.js API route support: https://nextjs.org/docs/api-routes/introduction
+import fs from 'fs'
+import path from 'path'
+import getConfig from 'next/config';
+// const { serverRuntimeConfig } = getConfig();
+
+// console.log({
+//   env: process.env,
+//   serverRuntimeConfig,
+// })
+
+// TODO: Why don't env variables propagate to here?
+// const messagePath = path.join(serverRuntimeConfig.dataPath, 'message')
+const messagePath = '/data/message'
+
+function getFileData() {
+  try {
+    const data = fs.readFileSync(messagePath).toString()
+    console.log(data)
+    return data
+  } catch (_e) {
+    return ''
+  }
+}
+
+function setFileData(newMessage) {
+  try {
+    fs.writeFileSync(messagePath, newMessage)
+  } catch (_e) {
+    console.log(_e)
+  }
+}
 
 export default function hello(req, res) {
-  res.status(200).json({ server: 'bruh' })
+  if (req.method === 'PATCH') {
+    setFileData(req.body.message.slice(0,280))
+    res.status(202)
+  } else {
+    res.status(200).json({
+      server: 'bruh',
+      file: getFileData(),
+    })
+  }
 }

pages/index.js

@@ -1,5 +1,5 @@
-import Head from 'next/head'
-import styles from '../styles/Home.module.css'
+import Head from "next/head";
+import styles from "../styles/Home.module.css";
 
 export default function Home() {
   return (
@@ -8,11 +8,31 @@ export default function Home() {
         <title>Create Next App</title>
       </Head>
       <h1>bruh</h1>
-      <button onClick={async () => {
-        const res = await fetch('/api/hello')
-        const json = await res.text()
-        alert(json)
-      }}>bruh?</button>
+      <button
+        onClick={async () => {
+          const res = await fetch("/api/hello");
+          const json = await res.text();
+          alert(json);
+        }}
+      >
+        bruh?
+      </button>
+      <button
+        onClick={async () => {
+          const newMessage = prompt("new bruh?");
+          await fetch("/api/hello", {
+            method: "PATCH",
+            headers: {
+              "Content-Type": "application/json",
+            },
+            body: JSON.stringify({
+              message: newMessage,
+            }),
+          });
+        }}
+      >
+        set bruh
+      </button>
     </div>
-  )
+  );
 }