var exec = require("child_process").exec,
sys = require("sys");

var DEBUG = false;

function getProcessInfo (process, cb) {
  var cmd = DEBUG ? "ps -aux" : "ps",
  lists,
  i,
  line,
  headers,
  ret = {};
  console.log("commmand line " + cmd);


  cb = cb || function() {};
  try {
    exec(cmd, function(err, out) {
      if(err) {
        console.log("[CloudAPI] Failed to kill process");
        console.log(sys.inspect(err));
        cb(err, null);
      } else {
        if(out) {
          lists = out.split("\n");
          headers = lists.shift();
          i = lists.length;
          console.log(lists);

          while(i--) {
            if(lists[i].indexOf(process) > -1) {
              line = lists[i];
              break;
            }
          }
          i = headers.length;
          console.log(headers);

          while(i--) {
            ret[headers[i]] = line[i];
          }
          console.log(ret);

          cb(null, ret);
        } else {
          cb(new Error("incorrect output"), null);
        }
      }
    });
  } catch(e) {
    console.log("[CloudAPI] Failed to execute command");
    cb(new Error("failed to execute command"), null);
  }
}

getProcessInfo("com.aliyun.homeshell");

module.exports = exports = getProcessInfo;