first init

.gitignore

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+HELP.md
+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### STS ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### IntelliJ IDEA ###
+.idea
+*.iws
+*.iml
+*.ipr

pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>instabot</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>18</maven.compiler.source>
+        <maven.compiler.target>18</maven.compiler.target>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.seleniumhq.selenium</groupId>
+            <artifactId>selenium-java</artifactId>
+            <version>4.5.3</version>
+        </dependency>
+    </dependencies>
+
+</project>

src/main/java/org/yildiz/Main.java

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+package org.yildiz;
+
+import org.yildiz.instabot.InstaBot;
+
+import java.io.FileWriter;
+import java.io.IOException;
+
+public class Main {
+
+
+    public static void main(String[] args) {
+        System.setProperty("webdriver.chrome.driver", "C:\\instabot\\chromedriver.exe");
+        final String USERNAME = "user_name";
+        final String PASSWORD = "password";
+        final int PIC_LIMIT = 100;
+        InstaBot instabot = new InstaBot();
+        writeToFile("instabot-result.txt", instabot.startBot(USERNAME, PASSWORD, PIC_LIMIT));
+    }
+
+    public static void writeToFile(String fileName, String content) {
+        try {
+            FileWriter myWriter = new FileWriter(fileName);
+            myWriter.write(content);
+            myWriter.close();
+            System.out.println("Successfully wrote to the file.");
+        } catch (IOException e) {
+            System.out.println("An error occurred.");
+            e.printStackTrace();
+        }
+    }
+}

src/main/java/org/yildiz/instabot/InstaBot.java

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+package org.yildiz.instabot;
+
+import org.openqa.selenium.*;
+import org.openqa.selenium.chrome.ChromeDriver;
+import org.openqa.selenium.support.ui.ExpectedConditions;
+import org.openqa.selenium.support.ui.FluentWait;
+import org.openqa.selenium.support.ui.Wait;
+
+import java.time.Duration;
+import java.util.*;
+import java.util.NoSuchElementException;
+
+public class InstaBot {
+    private final String INSTA_HOME_PAGE = "https://www.instagram.com";
+
+    private final By usernameLocator = new By.ByCssSelector("input[name='username']");
+    private final By passwordLocator = new By.ByCssSelector("input[name='password']");
+    private final By loginButtonLocator = new By.ByCssSelector("button[type='submit']");
+    private final By postsLocator = new By.ByCssSelector("article a[href*='/p/']");
+    private final By profileLocator = new By.ByCssSelector("img[alt*='s profile picture']");
+
+    private WebDriver webDriver = new ChromeDriver();
+
+    public String startBot(String username, String password, int picLimit) {
+        try {
+            final String USER_PROFILE = INSTA_HOME_PAGE + "/" + username;
+            webDriver.manage().window().maximize();
+            JavascriptExecutor jse = (JavascriptExecutor) webDriver;
+
+            webDriver.get(INSTA_HOME_PAGE);
+            login(username, password);
+            waitTo(profileLocator);
+            webDriver.get(USER_PROFILE);
+            waitTo(postsLocator);
+
+            Set<String> picLinks = collectPicLinks(jse, picLimit);
+
+            HashMap<String, Integer> likeCounter = countLikes(jse, picLinks);
+
+            String fanList = likeCounter.entrySet()
+                    .stream()
+                    .sorted(Collections.reverseOrder(Map.Entry.comparingByValue()))
+                    .toList()
+                    .toString();
+
+            jse.executeScript("alert('" + fanList + "');");
+
+            return fanList;
+        } catch (Exception e) {
+            System.out.println(e);
+            return null;
+        }
+    }
+
+    private void login(String username, String password) {
+        waitTo(usernameLocator);
+        webDriver.findElement(usernameLocator).sendKeys(username);
+        webDriver.findElement(passwordLocator).sendKeys(password);
+        webDriver.findElement(loginButtonLocator).click();
+    }
+
+    private Set<String> collectPicLinks(JavascriptExecutor jse, int picLimit) throws InterruptedException {
+        Set<String> picLinks = new HashSet<>();
+        int index = 0;
+        do {
+            index = picLinks.size();
+            if (index >= picLimit) {
+                break;
+            }
+            final List<WebElement> pics = webDriver.findElements(postsLocator);
+            final int minLimit = Math.min(picLimit, pics.size());
+            for (int i = 0; i < minLimit; i++) {
+                picLinks.add(pics.get(i).getAttribute("href"));
+            }
+            scrollBy(jse);
+            Thread.sleep(3000l);
+        } while (index < picLimit && (index != picLinks.size() || index == 0));
+
+        return picLinks;
+    }
+
+    private HashMap<String, Integer> countLikes(JavascriptExecutor jse, Set<String> picLinks) {
+        HashMap<String, Integer> likeCounter = new HashMap<>();
+        String originalWindow = webDriver.getWindowHandle();
+        for (String pLink : picLinks) {
+            try {
+                webDriver.switchTo().newWindow(WindowType.TAB);
+                webDriver.get(pLink + "liked_by/");
+                waitTo(profileLocator);
+                scrollBy(jse);
+                Thread.sleep(3000l);
+                List<WebElement> likedUsers = webDriver.findElements(By.cssSelector("main [alt$='profile picture']"));
+                for (WebElement u : likedUsers) {
+                    String followerUsername = u.getAttribute("alt").replace("'s profile picture", "");
+                    if (likeCounter.containsKey(followerUsername)) {
+                        likeCounter.put(followerUsername, likeCounter.get(followerUsername) + 1);
+                    } else {
+                        likeCounter.put(followerUsername, 1);
+                    }
+                }
+                webDriver.close();
+                webDriver.switchTo().window(originalWindow);
+            } catch (Exception e) {
+                System.out.println("ERROR OCCURED FOR: " + pLink);
+            }
+        }
+
+        return likeCounter;
+    }
+
+    private void scrollBy(JavascriptExecutor jse) {
+        //jse.executeScript("window.scrollBy(0,document.body.style.zoom = 0.5)");
+        jse.executeScript("window.scrollBy(0,document.body.scrollHeight)");
+    }
+
+    private void waitTo(By locator) {
+        Wait<WebDriver> wait = new FluentWait<>(webDriver)
+                .withTimeout(Duration.ofSeconds(15))
+                .pollingEvery(Duration.ofSeconds(1))
+                .ignoring(NoSuchElementException.class);
+
+        wait.until(ExpectedConditions.presenceOfAllElementsLocatedBy(locator));
+    }
+
+}