package Compiler;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.List;


public class ExecuteC {
    public void compileAndExecuteC(List<String> code){
        writeProgram(code);
        if (!compileC()){
            String output = runProgram();
            System.out.println(output);
        }
        else{
            Language.displayError("Runtime Error");
        }
    }

    public void writeProgram(List<String> codeLines){
        BufferedWriter output = null;
        try {
            File file = new File("main.c");
            output = new BufferedWriter(new FileWriter(file));
            for(String line:codeLines){
                output.write(line+"\n");
            }
            output.close();
        } catch ( IOException e ) {
            e.printStackTrace();
        }

    }

    public Boolean compileC(){
        try{
            String s= null;
            Process p = Runtime.getRuntime().exec("cmd /C  gcc main.c -o main.exe");
            BufferedReader stdError = new BufferedReader(new 
                InputStreamReader(p.getErrorStream()));
            boolean error=false;
             while ((s = stdError.readLine()) != null) {
                 error=true;
             }
             return error;
        } catch (IOException e){
            e.printStackTrace();
        }
        return false;
    }

    public String runProgram(){
        
        try{
            String[] command = {"cmd", "/C", "main.exe"};
            ProcessBuilder probuilder = new ProcessBuilder(command);
            Process p = probuilder.start();
            BufferedReader stdInput = new BufferedReader(new 
                InputStreamReader(p.getInputStream()));
            
            String s = null;
            String output="";
            while ((s = stdInput.readLine()) != null) {
                output+=s;
            }
            return output;
        } catch (IOException e){
            e.printStackTrace();
        }
        return null;
    } 
}