init

Dockerfile

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+FROM node:20-slim
+
+WORKDIR /usr/src/app
+
+COPY package*.json ./
+
+RUN npm install --production
+
+COPY . .
+
+ENV PORT=8080
+ENV HOST=0.0.0.0
+ENV ACCESS_SECRET=gif
+
+EXPOSE 8080
+
+CMD ["node", "index.js"]

Readme.md

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+# Giphy Proxy
+
+Minimalistic Node.js proxy with a protected subroute.
+
+## Setup
+
+Build:
+
+```sh
+r build -t giphy-proxy .
+```
+
+Run:
+
+```sh
+docker run -d \
+  -p 8080:8080 \
+  -e GIPHY_API_KEY="your_api_key" \
+  -e ACCESS_SECRET="mysecret" \
+  giphy-proxy
+```
+
+## Usage
+
+Example (Random):
+
+```sh
+curl http://localhost:8080/mysecret/
+```
+
+Example (Specific Tag):
+
+```sh
+curl http://localhost:8080/mysecret/cat
+```
+
+All subsequent routes will be ignored!

index.js

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+const http = require("http");
+const axios = require("axios");
+
+// Configuration
+const host = process.env.HOST || "0.0.0.0";
+const port = process.env.PORT || 8080;
+const GIPHY_API_KEY = process.env.GIPHY_API_KEY;
+const PROXY_SECRET = process.env.PROXY_SECRET || "gif";
+
+function catchError(res, error) {
+  console.error("An error occurred:", error.message);
+  res.writeHead(500);
+  res.end(JSON.stringify({ error: "Internal Server Error" }));
+}
+
+const requestListener = function (clientReq, clientRes) {
+  const parts = clientReq.url?.split("/").filter(Boolean) || [];
+  
+  const providedSecret = parts[0];
+  const tag = parts[1] || "";
+
+  if (providedSecret !== PROXY_SECRET) {
+    console.warn(`Unauthorized access: Invalid secret`);
+    clientRes.writeHead(403);
+    clientRes.end(JSON.stringify({ error: "Forbidden: Invalid access key" }));
+    return;
+  }
+
+  if (!GIPHY_API_KEY) {
+    console.error("GIPHY_API_KEY is not configured.");
+    clientRes.writeHead(500);
+    clientRes.end(JSON.stringify({ error: "Server configuration error" }));
+    return;
+  }
+
+  const apiUrl = `https://api.giphy.com/v1/gifs/random?api_key=${GIPHY_API_KEY}&rating=pg-13${tag ? `&tag=${tag}` : ""}`;
+
+  axios
+    .get(apiUrl)
+    .then((apiRes) => {
+      const gifUrl = apiRes?.data?.data?.images?.original?.url;
+      
+      if (gifUrl) {
+        console.log(`Success: Found GIF for '${tag}'`);
+        clientRes.setHeader("Content-Type", "application/json");
+        clientRes.writeHead(200);
+        clientRes.end(JSON.stringify({ url: gifUrl }));
+      } else {
+        console.log(`Notice: No GIF found for topic '${tag}'`);
+        clientRes.writeHead(404);
+        clientRes.end(JSON.stringify({ error: "No GIF found" }));
+      }
+    })
+    .catch((error) => {
+      catchError(clientRes, error);
+    });
+};
+
+const server = http.createServer(requestListener);
+server.listen(port, host, () => {
+  console.log(`Server is running on http://${host}:${port}`);
+});