From 41e052670c7c5dbd106ce2da52671a6258a386f4 Mon Sep 17 00:00:00 2001
From: Chandan Kumar <cksharma122@gmail.com>
Date: Tue, 7 Dec 2021 23:16:16 +0530
Subject: [PATCH] #29 Add api to get quotes for multiple companies at once

---
 README.md    |  4 ++++
 app.js       |  7 +++++++
 nse/index.js | 14 ++++++++++++++
 3 files changed, 25 insertions(+)

diff --git a/README.md b/README.md
index 7d336fe..34f1f64 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,10 @@ http://localhost:3000/nse/get_quotes<br/>
 Format: JSON<br/>
 http://localhost:3000/nse/get_quote_info?companyName=TCS<br/>
 
+- Get the quotation data of the symbols (companyNames) from NSE - JSON<br/>
+Format: JSON<br/>
+http://localhost:3000/nse/get_multiple_quote_info?companyNames=TCS,WIPRO,AND_MORE<br/>
+
 - Get the top 10 gainers of NSE<br/>
 Format: JSON<br/>
 http://localhost:3000/nse/get_gainers<br/>
diff --git a/app.js b/app.js
index f344849..a87cb17 100644
--- a/app.js
+++ b/app.js
@@ -50,6 +50,13 @@ app.get("/nse/get_quote_info", (req, res, next) => {
     });
 });
 
+// Get the quotation data of the symbols (companyNames) from NSE - JSON
+// Example: http://localhost:3000/nse/get_multiple_quote_info?companyNames=TCS,WIPRO
+app.get("/nse/get_multiple_quote_info", (req, res, next) => {
+  const companyNames = req.query.companyNames.split(",");
+  NSEAPI.getMultipleQuoteInfo(companyNames).then(r =>  res.json(r));
+});
+
 // Get the top 10 gainers of NSE - JSON
 // Example: http://localhost:3000/nse/get_gainers
 app.get("/nse/get_gainers", (req, res, next) => {
diff --git a/nse/index.js b/nse/index.js
index 11bcb45..c891e43 100644
--- a/nse/index.js
+++ b/nse/index.js
@@ -53,6 +53,19 @@ function getQuoteInfo(symbol) {
   return NSEAPI.getQuoteInfo(symbol);
 }
 
+/**
+ * Get info for multiple company at once
+ * @param symbols {[string]} symbols of companies
+ *
+ * @returns {object}
+ */
+function getMultipleQuoteInfo(symbols) {
+  return Promise.all(symbols.map(async (symbol) => {
+    const res = await NSEAPI.getQuoteInfo(symbol)
+    return res.data;
+  }))
+}
+
 
 /**
  * Get List of Gainers
@@ -161,6 +174,7 @@ var nse = {
   getSectorsList: getSectorsList,
   getQuotes: getQuotes,
   getQuoteInfo: getQuoteInfo,
+  getMultipleQuoteInfo: getMultipleQuoteInfo,
   getGainers: getGainers,
   getLosers: getLosers,
   getInclineDecline: getInclineDecline,