package au.pfip;

import java.io.BufferedReader;
        import java.io.File;
        import java.io.InputStreamReader;
        import java.util.ArrayList;

public class Shell {

    /** Returns null if it failed for some reason.
     */
    private static ArrayList<String> command(final String cmdline) {
        try {
            Process process =
                    new ProcessBuilder("/usr/bin/bash", "-c", cmdline)
                            .redirectErrorStream(true)
                            .directory(new File("."))
                            .start();

            ArrayList<String> output = new ArrayList<>();
            BufferedReader br = new BufferedReader(
                    new InputStreamReader(process.getInputStream()));
            String line;
            while ( (line = br.readLine()) != null )
                output.add(line);

            //There should really be a timeout here.
            if (0 != process.waitFor())
                return null;

            return output;

        } catch (Exception e) {
            logging.error("RuntimeException(e) ~ " + e);
            return null;
        }
    }

    public static boolean check(String cmd, String needle)
    {
        String cmdOutput = test(cmd);
        return cmdOutput.contains(needle);
    }

    public static void runCmd(String cmd)
    {
        test(cmd);
    }

// --Commented out by Inspection START (4/2/25, 10:02 pm):
//    public static boolean checkMulti(String cmd, String needle)
//    {
//        String cmdOutput = test(cmd);
//        return cmdOutput.contains(needle);
//    }
// --Commented out by Inspection STOP (4/2/25, 10:02 pm)

    private static String test(String cmdline) {
        ArrayList<String> output = command(cmdline);
        StringBuilder reply = new StringBuilder();
        if (null == output) {
            return "";
        }
        else {
            for (String line : output) {
                reply.append(line);
            }
        }
        return reply.toString();
    }

}