MainScreen.java

import javafx.application.Application;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.stage.Stage;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.shape.Circle;
import java.io.InputStream;


public class MainScreen extends Application {

    // Enum to define post content type
    enum ContentType { TEXT, IMAGE }

    // Post class
    static class Post {
        String username;
        String profilePicPath;
        String timestamp;
        String title;
        ContentType contentType;
        String contentText;      // used if TEXT
        String contentImagePath; // used if IMAGE

        Post(String username, String profilePicPath, String timestamp, String title,
             ContentType contentType, String contentText, String contentImagePath) {
            this.username = username;
            this.profilePicPath = profilePicPath;
            this.timestamp = timestamp;
            this.title = title;
            this.contentType = contentType;
            this.contentText = contentText;
            this.contentImagePath = contentImagePath;
        }
    }

    // Friend class
    static class Friend {
        String username ;
        String profilePicPath ;
        boolean isOnline ;

        Friend(String username , String profilePicPath , boolean isOnline ) {
            this.username = username ;
            this.profilePicPath = profilePicPath ;
            this.isOnline = isOnline ;
        }
    }

    // Method to create a friend ui element
    // Updated method to create a friend UI element
    private VBox createFriendBox(Friend friend) {
        VBox box = new VBox(5);
        box.setPadding(new Insets(5));
        box.setStyle("-fx-background-color: #f5f5f5; -fx-background-radius: 5px;");

        HBox top = new HBox(10);
        top.setAlignment(Pos.CENTER_LEFT);

        // Load profile image
        Image profileImg;
        if (friend.profilePicPath != null && !friend.profilePicPath.isEmpty()) {
            InputStream is = getClass().getResourceAsStream(friend.profilePicPath);
            if (is != null) {
                profileImg = new Image(is);
            } else {
                System.out.println("Image not found! Using default.");
                profileImg = new Image(getClass().getResourceAsStream("default_pfp.png"));
            }
        } else {
            // no path provided → use default
            profileImg = new Image(getClass().getResourceAsStream("default_pfp.png"));
        }

        ImageView profilePic = new ImageView(profileImg);
        profilePic.setFitWidth(40);
        profilePic.setFitHeight(40);

        // Make it circular
        Circle clip = new Circle(20, 20, 20);
        profilePic.setClip(clip);

        Label usernameLabel = new Label(friend.username);
        usernameLabel.setStyle("-fx-font-weight: bold; -fx-font-size: 14px;");

        // Online/offline dot
        Circle statusDot = new Circle(6);
        statusDot.setFill(friend.isOnline ? javafx.scene.paint.Color.GREEN : javafx.scene.paint.Color.RED);

        Region spacer = new Region();
        HBox.setHgrow(spacer, Priority.ALWAYS);

        top.getChildren().addAll(profilePic, usernameLabel, spacer, statusDot);
        box.getChildren().add(top);

        return box;
    }


    // Method to create a post UI element
    private VBox createPost(Post post) {
        VBox postBox = new VBox(5);
        postBox.setPadding(new Insets(10));
        postBox.setStyle("-fx-background-color: #f0f0f0; -fx-background-radius: 5px;");

        // Top box: profile picture, username, timestamp
        HBox topBox = new HBox(5);

        // Load profile image
        Image profileImg;
        if (post.profilePicPath != null && !post.profilePicPath.isEmpty()) {
            InputStream is = getClass().getResourceAsStream(post.profilePicPath);
            if (is != null) {
                profileImg = new Image(is);
            } else {
                System.out.println("Image not found! Using default.");
                profileImg = new Image(getClass().getResourceAsStream("default_pfp.png"));
            }
        } else {
            // no path provided → use default
            profileImg = new Image(getClass().getResourceAsStream("default_pfp.png"));
        }
        ImageView profilePic = new ImageView(profileImg);
        profilePic.setFitWidth(40);
        profilePic.setFitHeight(40);

        // Make it circular
        Circle clip = new Circle(20, 20, 20);
        profilePic.setClip(clip);

        Label usernameLabel = new Label(post.username);
        usernameLabel.setStyle(
                "-fx-font-size: 18px;" +
                        "-fx-text-fill: Blue;"
        );
        Label timestampLabel = new Label(post.timestamp);
        timestampLabel.setStyle(
                "-fx-font-size: 12px;" +
                        "-fx-text-fill: black;"
        );
        topBox.getChildren().addAll(profilePic, usernameLabel, timestampLabel);
        topBox.setAlignment(Pos.CENTER_LEFT);

        // Title
        Label titleLabel = new Label(post.title);
        titleLabel.setStyle(
                "-fx-font-size: 18px;" +
                        "-fx-text-fill: black;"
        );

        postBox.getChildren().addAll(topBox, titleLabel);

        // Content
        if (post.contentType == ContentType.IMAGE) {
            try {
                Image postImg = new Image(getClass().getResourceAsStream(post.contentImagePath));
                ImageView imgView = new ImageView(postImg);
                imgView.setFitWidth(500);      // Limit width
                imgView.setPreserveRatio(true); // Keep aspect ratio

                // Wrap in a VBox for styling
                VBox imgBox = new VBox(imgView);
                imgBox.setAlignment(Pos.CENTER);
                imgBox.setPadding(new Insets(10));
                imgBox.setStyle(
                        "-fx-background-color: white;" +
                                "-fx-background-radius: 10;" +
                                "-fx-effect: dropshadow(three-pass-box, rgba(0,0,0,0.2), 10, 0, 0, 5);" // subtle shadow
                );

                postBox.getChildren().add(imgBox);

            } catch (Exception e) {
                Label fallback = new Label("[Image not found]");
                postBox.getChildren().add(fallback);
            }
        } else if (post.contentType == ContentType.TEXT) {
            Label contentLabel = new Label(post.contentText);
            contentLabel.setWrapText(true); // wrap long text
            contentLabel.setStyle(
                    "-fx-font-size: 14px;" +
                            "-fx-text-fill: black;"
            );

            // Wrap in a VBox for styling
            VBox textBox = new VBox(contentLabel);
            textBox.setPadding(new Insets(10));
            textBox.setStyle(
                    "-fx-background-color: white;" +
                            "-fx-background-radius: 10;" +
                            "-fx-effect: dropshadow(three-pass-box, rgba(0,0,0,0.2), 10, 0, 0, 5);"
            );

            postBox.getChildren().add(textBox);
        }


        // Action buttons
        HBox actionBox = new HBox(10);
        Button likeButton = new Button("Like");
        Button commentButton = new Button("Comment");
        actionBox.getChildren().addAll(likeButton, commentButton);
        postBox.getChildren().add(actionBox);

        return postBox;
    }


    @Override
    public void start(Stage stage) {
        BorderPane root = new BorderPane();

        // Top navigation bar
        HBox topNav = new HBox();
        topNav.setPadding(new Insets(10));
        topNav.setStyle("-fx-background-color: #ffffff;");
        topNav.setAlignment(Pos.CENTER_LEFT);

        TextField searchBar = new TextField();
        searchBar.setPromptText("Search ...");
        searchBar.setPrefWidth(200);
        searchBar.setStyle(
                "-fx-background-radius: 5px;" +
                        "-fx-border-radius: 5px;" +
                        "-fx-border-color: #ddd;" +
                        "-fx-padding: 5 10 5 10;"
        );

        Button notificationsButton = new Button("🔔News");
        Button settingsButton = new Button("Settings");
        HBox.setMargin(notificationsButton, new Insets(0, 5, 0, 5));
        HBox.setMargin(settingsButton, new Insets(0, 5, 0, 5));

        Region spacer = new Region();
        HBox.setHgrow(spacer, Priority.ALWAYS);
        topNav.getChildren().addAll(searchBar, spacer, notificationsButton, settingsButton);
        root.setTop(topNav);

        // Feed area
        VBox feed = new VBox(10);
        feed.setAlignment(Pos.TOP_CENTER); //Center all posts horizontally
        feed.setStyle("-fx-background-color: #A8D2FF;"); // light gray background
        feed.setFillWidth(true);

        ScrollPane scrollPane = new ScrollPane(feed);
        scrollPane.setFitToWidth(true);
        scrollPane.setStyle("-fx-background: transparent; -fx-background-color: transparent;"); // optional
        root.setCenter(scrollPane);

        // Sample posts
        Post post1 = new Post("Alice", "alice.jpg", "10m ago", "Hello World!", ContentType.TEXT, "This is my first post!", null);
        Post post2 = new Post("Bob", "", "30m ago", "Vacation time", ContentType.IMAGE, null, "content.jpg");
        Post post3 = new Post("Charlie", "", "1h ago", "JavaFX is cool", ContentType.TEXT, "Just learning social app layout!", null);

        // Add posts wrapped in HBox to center them and limit width
        for (Post p : new Post[]{post1, post2, post3}) {
            VBox postBox = createPost(p);
            postBox.setMaxWidth(600);
            postBox.setPrefWidth(600);

            HBox wrapper = new HBox();
            wrapper.setAlignment(Pos.CENTER);
            wrapper.getChildren().add(postBox);

            feed.getChildren().add(wrapper);
        }

        // Friends list (right side)
        VBox friendsList = new VBox(10);
        friendsList.setPadding(new Insets(10));

        friendsList.getChildren().addAll(
                createFriendBox(new Friend("Alice", "alice.jpg", true)),
                createFriendBox(new Friend("Bob", "", false)),
                createFriendBox(new Friend("Charlie", "", true))
        );

        ScrollPane friendsScroll = new ScrollPane(friendsList);
        friendsScroll.setFitToWidth(true);
        root.setRight(friendsScroll);

        Scene scene = new Scene(root, 1200, 600);
        scene.getStylesheets().add(getClass().getResource("styles/MainScreenStyle.css").toExternalForm());

        stage.setTitle("SocialClone Main Screen");
        stage.setScene(scene);
        stage.show();
    }


    public static void main(String[] args) {
        launch();
    }
}