WebController.java

/*   Created by IntelliJ IDEA.
 *   Author: Kshitij Varshney (kshitijvarshne1)
 *   Date: 05-May-21
 *   Time: 1:45 PM
 *   File: WebController.java
 */

package com.example.aaaa;

import org.json.JSONArray;
import org.json.JSONObject;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RestController;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.text.DateFormat;

@RestController
public class WebController {


    @GetMapping("/")
    public String working() {
        return "working";
    }

    @RequestMapping(value = "/hello", method = RequestMethod.GET)
    public String writeSession(String paramString) {
        try {
            //https://cdn-api.co-vin.in/api/v2/admin/location/states
            URL uRL = new URL("https://cdn-api.co-vin.in/api/v2/appointment/sessions/public/findByPin?pincode=202001&date=05-05-2021");
            String string3 = "";
            HttpURLConnection httpURLConnection = (HttpURLConnection) uRL.openConnection();
            httpURLConnection.setRequestMethod("GET");
            int n = httpURLConnection.getResponseCode();
            if (n == 200) {
                BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(httpURLConnection.getInputStream()));
                StringBuffer stringBuffer = new StringBuffer();
                while ((string3 = bufferedReader.readLine()) != null) {
                    stringBuffer.append(string3);
                }

                JSONObject jsonObject = new JSONObject(stringBuffer.toString());
                JSONArray array = jsonObject.getJSONArray("sessions");
                if (array != null) {
                    String[] state_name = new String[array.length()];
                    String[] state_address = new String[array.length()];
                    long[] availableCapacity= new long[array.length()];

                    for (int i = 0; i < array.length(); i++) {
                        state_name[i] = array.getJSONObject(i).getString("name");
                        state_address[i] = array.getJSONObject(i).getString("address");
                        availableCapacity[i]=array.getJSONObject(i).getLong("available_capacity");

                        String result = "Vaccination+centres+for+18-44+groups:+" + state_name[i].replace(" ","+") +'+'+
                                "+state+address:-++" + state_address[i].replace(" ","+")+"+"+availableCapacity[i]+"+slots+are+available+on+";

                        System.out.println(state_name[i] +"  " +state_address[i]);
                        String apiURL="https://api.telegram.org/bot1604017651:AAEWlp-OllFlAF4clHk4WPnUBVmtf0SR1b8/sendMessage?chat_id=@bnbotttt&text=";
                        apiURL+=result;
                        System.out.println(apiURL);
                        URL uRL2 = new URL(apiURL);
                        HttpURLConnection httpURLConnection2 = (HttpURLConnection) uRL2.openConnection();
                        httpURLConnection2.setRequestMethod("GET");
                        int n2 = httpURLConnection2.getResponseCode();
                        System.out.println(n2 + "result------");

                    }
                }
                bufferedReader.close();

            }
            return "true";
        } catch (Exception exception) {
            System.out.println(exception);
            return "false";
        }
    }
}
//https://api.telegram.org/bot1604017651:AAEWlp-OllFlAF4clHk4WPnUBVmtf0SR1b8/sendMessage?chat_id=@bnbotttt&text=hello