SparkServer.java

import java.io.File;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.nio.file.StandardCopyOption;

import java.io.PrintWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.InetSocketAddress;

import java.io.BufferedReader; // for inputsteam to string
import java.nio.charset.StandardCharsets;

import static spark.Spark.*;
import org.json.*;

import net.sourceforge.tess4j.Tesseract;
import net.sourceforge.tess4j.TesseractException;

public class SparkServer {

    public static void main(String[] args){
        port(8000);
        staticFiles.location("/Web Stuff");
        get("/hello", (req, res) -> "Hello World");

        post("/ocr", (req, res) -> {
            String response;
            Files.write(Paths.get("temp.png"), req.bodyAsBytes());
            Tesseract tesseract = new Tesseract();

            try {
                response = tesseract.doOCR(new File("temp.png"));
            } catch(TesseractException e) {
                response = e.toString();
            }

            res.header("Access-Control-Allow-Origin", "*");
            return response;
        });

        post("/format", (req, res) -> {
            Format formatter = new Format();
            res.header("Access-Control-Allow-Origin", "*");
            return formatter.formatText(req.body());
        });

        post("/dbinput", (req, res) -> {
            // extract from req
            String user = req.queryParams("email"); 
            String input = req.queryParams("code");

            Database database = new Database();
            database.getDatabase();

            database.addEntry(user, input);
            database.saveDatabase();

            res.header("Access-Control-Allow-Origin", "*");
            return "Successfully saved file!";
        });

        post("/dboutput", (req, res) -> {
            String user = req.queryParams("email");

            Database database = new Database();
            database.getDatabase();

            JSONArray ja = new JSONArray(database.getAllFiles(user));

            res.header("Access-Control-Allow-Origin", "*");
            return ja.toString();
        });

        post("/compiler", (req, res) -> {
            String input = req.queryParams("code");
            
            Compiler compiler = new Compiler();
            String fileName = compiler.FindFileName(input);
            Exporter.exportAs(input, fileName);

            compiler.compile(fileName);
            String response = compiler.run(fileName);
            compiler.deleteExecutable(fileName);

            res.header("Access-Control-Allow-Origin", "*");
            return response;

            //return input;
        });
    }

}