Added CLI support for API calling for 3 parameters AGE PINCODE AND DAYS

.env

@@ -2,7 +2,7 @@ PINCODE=
 EMAIL=
 APPLICATION_PASSWORD=
 AGE=
-
+QuUANTITY=1
 #Example:
 #PINCODE=201301
 #[email protected]

CLI/Vaccinator

@@ -0,0 +1,58 @@
+#!/usr/bin/env node
+const axios=require('axios');
+const chalk=require('chalk');
+const moment=require('moment');
+const url = "https://quotes.rest/qod"
+const getAvailability=require('../services/getAvailabilityonDate');
+ help =() => {
+    console.log(chalk.white(`./logger help  # Use It for asking help \n 
+./logger AGE PINCODE NEXTDAYS  # pass exactly 3 parameters in the given order for displaying vaccine availability based on the filter\n`));
+ }
+ errorLog=(error) => {
+   console.log(chalk.red(`${error}`));
+ }
+ // console.log(chalk.blue(`${(process.argv)[2]}`));
+
+ if((process.argv)[2]=="help") {
+   help();
+ }
+ callAPI = async (PINCODE,DAYS,QUANTITY, AGE) => {
+    let today=moment();
+    for(let i=0 ;i <10;i++) {
+      let DATE = today.format('DD-MM-YYYY');  
+      let response = await getAvailability(PINCODE,DATE,QUANTITY,AGE);
+      if(response.status=='error') {
+        console.log(chalk.red('error occured try again!'));
+      }
+      else {
+        console.log(chalk.blue(`Date:${DATE}`));
+        const slots=response.data.validSlots;
+        if(slots.length == 0) {
+          console.log( chalk.bgRed("No free Slot Available"));
+
+        }
+        else {
+          console.log(chalk.yellow("Total Slots Available :\t")+chalk.bgBlue(slots.length));
+          slots.map((slot) => {
+            console.log(chalk.yellow("Vaccine :\t")+ chalk.green(slot.vaccine));
+            console.log(chalk.yellow("Fees :\t") + chalk.green(slot.fee));
+            console.log(chalk.yellow("Timings are : \t")+chalk.blue(slot.slots.length));
+            slot.slots.map((sl) => {
+              console.log(chalk.blue(sl));
+            });
+          });
+        }
+      }
+      today.add(1,'day');
+  }
+ }
+ if(process.argv.length==5) {
+    const DAYS=process.argv[4];
+    const AGE=process.argv[2];
+    const PINCODE=process.argv[3];
+    const QUANTITY=1;
+
+    callAPI(PINCODE,DAYS,QUANTITY,AGE);
+  }
+
+// prompt verison I have to learn from here https://scotch.io/tutorials/building-cli-applications-with-nodejs. and implement it.'

package.json

@@ -4,17 +4,24 @@
   "description": "",
   "main": "vaccineNotifier.js",
   "scripts": {
-    "test": "echo \"Error: no test specified\" && exit 1"
+    "test": "echo \"Error: no test specified\" && exit 1",
+    "start": "node vaccineNotifier.js"
   },
   "author": "[email protected]",
   "license": "ISC",
   "dependencies": {
     "axios": "^0.21.1",
+    "chalk": "^3.0.0",
     "cron": "^1.8.2",
     "dotenv": "^8.2.0",
     "moment": "^2.29.1",
     "node-cron": "^3.0.0",
-    "pm2": "^4.5.6"
+    "pm2": "^4.5.6",
+    "requests": "^0.3.0",
+    "save": "^2.4.0"
+  },
+  "bin": {
+    "outside": "bin/outside"
   },
   "devDependencies": {
     "nodemailer": "^6.6.0"

services/getAvailabilityonDate.js

@@ -0,0 +1,26 @@
+const axios=require('axios');
+const request=require('request');
+getAvailability = async  (PINCODE,DATE,QUANTITY, AGE) => {
+    const config = {
+        method: 'get',
+        url: 'https://cdn-api.co-vin.in/api/v2/appointment/sessions/public/findByPin?pincode=' + PINCODE + '&date=' + DATE,
+        headers: {
+            'accept': 'application/json',
+            'Accept-Language': 'hi_IN',
+            "Access-Control-Allow-Origin": "*",
+            'Host': 'cdn-api.co-vin.in',
+            'User-Agent':'Axios 0.21.1'
+        }
+    };
+     try {
+        const slots=await axios(config);
+        const sessions = slots.data.sessions;
+        const validSlots = sessions.filter(slot => slot.min_age_limit <= AGE &&  slot.available_capacity >= QUANTITY)
+        return {status:'success',data:{date:DATE, validSlots: validSlots}};
+    }
+    catch(err) {
+        console.log(err);
+        return {status:'error'}
+    }
+}
+module.exports= getAvailability;

vaccineNotifier.js

@@ -17,10 +17,10 @@ To close the app, run: pm2 stop vaccineNotifier.js && pm2 delete vaccineNotifier
 const PINCODE = process.env.PINCODE
 const EMAIL = process.env.EMAIL
 const AGE = process.env.AGE
-
+const QUANTITY=process.env.QUANTITY;
 async function main(){
     try {
-        cron.schedule('* * * * *', async () => {
+        cron.schedule('* * * * * *', async () => {
              await checkAvailability();
         });
     } catch (e) {
@@ -30,7 +30,6 @@ async function main(){
 }
 
 async function checkAvailability() {
-
     let datesArray = await fetchNext10Days();
     datesArray.forEach(date => {
         getSlotsForDate(date);
@@ -52,7 +51,7 @@ function getSlotsForDate(DATE) {
             let sessions = slots.data.sessions;
             let validSlots = sessions.filter(slot => slot.min_age_limit <= AGE &&  slot.available_capacity > 0)
             console.log({date:DATE, validSlots: validSlots.length})
-            if(validSlots.length > 0) {
+            if(validSlots.length >= QUANTITY) {
                 notifyMe(validSlots);
             }
         })
@@ -61,18 +60,16 @@ function getSlotsForDate(DATE) {
         });
 }
 
-async function
-
-notifyMe(validSlots){
+async function notifyMe(validSlots) {
     let slotDetails = JSON.stringify(validSlots, null, '\t');
     notifier.sendEmail(EMAIL, 'VACCINE AVAILABLE', slotDetails, (err, result) => {
         if(err) {
             console.error({err});
         }
-    })
+    });
 };
 
-async function fetchNext10Days(){
+async function fetchNext10Days() {
     let dates = [];
     let today = moment();
     for(let i = 0 ; i < 10 ; i ++ ){
@@ -83,6 +80,4 @@ async function fetchNext10Days(){
     return dates;
 }
 
-
-main()
-    .then(() => {console.log('Vaccine availability checker started.');});
+main().then(() => {console.log('Vaccine availability checker started.');});