warm up done

nodejs/week2/.gitignore

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+node_modules/

nodejs/week2/app.js

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+import express from 'express'
+import bodyParser from 'body-parser';
+import fs from 'fs';
+
+
+const documents = JSON.parse(fs.readFileSync('./document.json', 'utf-8'));
+
+const app = express();
+const port = 3600;
+
+// Support parsing JSON requests
+app.use(express.json());
+
+app.use(bodyParser.json());
+app.use(bodyParser.urlencoded({ extended: true }));
+
+
+//get all documents
+app.get('/search', (req, res) => {
+
+  if(!req.query.q){
+    console.log(`No query specified. sending all documents`);
+   return res.json(documents);
+  };
+  const query = req.query.q.toLowerCase();
+  const result = documents.filter((document) => {
+    return Object.values(document).some(value => value.toString().toLowerCase().includes(query));
+  });
+  console.log(`Search for ${query} returned ${result.length} results`);
+  return res.json(result);
+
+});
+
+//GET /documents/:id
+app.get('/documents/:id', (req, res) => {
+  const id = req.params.id;
+  const result = documents.find(document => document.id == id); //I know I need to parse the id and stick to string equality. but this is just a warm up. can I get away with this?
+  if (!result) {
+    return res.status(404).json({ error: 'Document not found' });
+  }
+  console.log(`Document with id ${id} found`);
+  return res.json(result);
+});
+
+
+//POST /search
+app.post('/search', (req, res) => {
+    const query = req.query.q ? req.query.q.toLowerCase() : null; 
+    const fields = req.body.fields || null;
+    //when both query and fields are provided
+    if (fields && query) {
+        return res.status(400).json({
+            message: "Both query parameter 'q' and 'fields' in body cannot be provided at the same time."
+        });
+    }
+
+    //when neither query nor fields are provided
+    if (!query && !fields) {
+        return res.status(400).json({
+            message: "Please provide either query parameter 'q' or 'fields' in body."
+        });
+    }
+
+    let result;
+
+    //when only fields is provided
+    if (fields) {
+        result = documents.filter((document) => {
+            return Object.keys(fields).every((field) => {
+                return document[field] && document[field].toString().toLowerCase() === fields[field].toString().toLowerCase();
+              });
+        });
+        console.log(`Search in fields ${JSON.stringify(fields)} returned ${result.length} results`);
+
+    }
+
+    //when only query is provided
+    if (query) {
+        result = documents.filter((document) => {
+            return Object.values(document).some((value) => {
+                return value.toString().toLowerCase().includes(query);
+              });
+        });
+        console.log(`Search for ${query} returned ${result.length} results`);
+    }
+    return res.json(result);
+
+});
+
+
+app.get("/", (req, res) => {
+  res.send("This is a search engine");
+});
+
+app.listen(port, () => {
+  console.log(`Listening on port ${port}`);
+});

nodejs/week2/document.json

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