index.js

const express = require("express");
const app = express();
const bodyParser = require("body-parser");
const cors = require("cors");
const fs = require("fs");
const { exec } = require("child_process");
const compiler = require("compilex");
const options = { stats: true };
compiler.init(options);

app.use(express.json());
app.use(express.urlencoded({ extended: true }));
app.use(cors());

app.get("/", function (req, res) {
  res.send("Hello World!!");
});

// app.post("/compile", (req, res) => {
//   const { code, input } = req.body; // Assuming code and input are sent as POST parameters

//   // Write the Java code to Main.java file
//   fs.writeFile("/code/temp/Main.java", code, (err) => {
//     if (err) {
//       console.error(err);
//       res.status(500).send("Error writing Java file");
//       return;
//     }

//     // Compile and run the Java code with input
//     const javaProcess = exec(
//       "javac -d /code/temp /code/temp/Main.java && java -cp /code/temp Main",
//       (error, stdout, stderr) => {
//         if (error) {
//           console.error(error);
//            res.send({error:stderr});
//           return;
//         }

//         console.log(stdout);
//         console.error(stderr);
//         res.send({output:stdout});
//       }
//     );

//     // Pass input to the Java process
//     if (input) {
//       javaProcess.stdin.write(input);
//       javaProcess.stdin.end();
//     }
//   });
// });

app.post("/compile", function (req, res) {
    var code = req.body.code;
    var input = req.body.input;
    var lang = req.body.lang;
    console.log(code + " " + input + " " + lang);
  
    try {
       if (lang == "Python") {
        if (!input) {
          var envData = { OS: "linux" };
          compiler.compilePython(envData, code, function (data) {
            if (data.output) {
              res.send(data);
            } else {
              res.send({ error: data.error });
            }
          });
        } else {
          var envData = { OS: "linux" };
          compiler.compilePythonWithInput(envData, code, input, function (data) {
            if (data.output) {
              res.send(data);
            } else {
              res.send({ error: data.error });
            }
          });
        }
      }
    } catch (e) {
      console.log("error:" + e);
    }
  });

const port = 7860;
app.listen(port, () => {
  console.log(`Open http://localhost:${port}`);
});