Week 2 Warmup

nodejs/week2/.gitignore

@@ -0,0 +1,2 @@
+node_modules/
+class30-homework/

nodejs/week2/app.js

@@ -0,0 +1,89 @@
+import express from 'express';
+import fs from 'fs';
+
+const app = express();
+const port = process.env.PORT || 3000;
+
+// Support parsing JSON requests
+app.use(express.json());
+
+// The documents.json file is assumed to be in the same directory as app.js
+const documentsFilePath = './documents.json';
+
+// Helper function to load documents from the JSON file
+const loadDocuments = () => {
+  const data = fs.readFileSync(documentsFilePath);
+  return JSON.parse(data);
+};
+
+app.get("/", (req, res) => {
+  res.send("This is a search engine");
+});
+
+// GET /search endpoint
+app.get("/search", (req, res) => {
+  const q = req.query.q;  // Retrieve the query parameter q
+  const documents = loadDocuments();
+
+  if (q) {
+    // Filter documents where any field contains the query
+    const result = documents.filter(doc =>
+      Object.values(doc).some(value => 
+        String(value).toLowerCase().includes(q.toLowerCase())
+      )
+    );
+    return res.json(result);
+  }
+
+  // If q is not provided, return all documents
+  res.json(documents);
+});
+
+// GET /documents/:id endpoint
+app.get("/documents/:id", (req, res) => {
+  const { id } = req.params;
+  const documents = loadDocuments();
+
+  const document = documents.find(doc => doc.id == id);
+
+  if (!document) {
+    return res.status(404).send("Document not found");
+  }
+
+  res.json(document);
+});
+
+// POST /search endpoint
+app.post("/search", (req, res) => {
+  const { q } = req.query;
+  const { fields } = req.body;
+
+  if (q && fields) {
+    return res.status(400).send("Both query parameter q and fields in body can't be provided at the same time.");
+  }
+
+  const documents = loadDocuments();
+
+  if (q) {
+    const result = documents.filter(doc =>
+      Object.values(doc).some(value => 
+        String(value).toLowerCase().includes(q.toLowerCase())
+      )
+    );
+    return res.json(result);
+  }
+
+  if (fields) {
+    const result = documents.filter(doc => 
+      Object.keys(fields).every(field => doc[field] === fields[field])
+    );
+    return res.json(result);
+  }
+
+  res.status(400).send("Please provide either q query parameter or fields in the request body.");
+});
+
+// Start the server
+app.listen(port, () => {
+  console.log(`Listening on port ${port}`);
+});

nodejs/week2/documents.json

@@ -0,0 +1,14 @@
+[
+    {
+      "id": 1,
+      "name": "Used Apple Airpods",
+      "price": "50",
+      "description": "Battery life is not great"
+    },
+    {
+      "id": 2,
+      "type": "doc",
+      "value": "hello world"
+    }
+  ]
+