#ifndef node_child_process_h
#define node_child_process_h

#include "node.h"
#include "events.h"
#include <v8.h>
#include <ev.h>
#include <evcom.h>

namespace node {

class ChildProcess : EventEmitter {
 public:
  static void Initialize (v8::Handle<v8::Object> target);

 protected:
  static v8::Persistent<v8::FunctionTemplate> constructor_template;
  static v8::Handle<v8::Value> New (const v8::Arguments& args);
  static v8::Handle<v8::Value> Spawn (const v8::Arguments& args);
  static v8::Handle<v8::Value> Write (const v8::Arguments& args);
  static v8::Handle<v8::Value> Close (const v8::Arguments& args);
  static v8::Handle<v8::Value> Kill (const v8::Arguments& args);
  static v8::Handle<v8::Value> PIDGetter (v8::Local<v8::String> _, const v8::AccessorInfo& info);

  ChildProcess();
  ~ChildProcess();

  int Spawn (const char *command);
  int Write (const char *str, size_t len);
  int Close (void);
  int Kill (int sig);

 private:
  static void on_read (evcom_reader *r, const void *buf, size_t len);
  static void reader_closed (evcom_reader *r);
  static void stdin_closed (evcom_writer *w);
  static void OnCHLD (EV_P_ ev_child *watcher, int revents);

  void MaybeShutdown (void);
  void Shutdown (void);

  evcom_reader stdout_reader_;
  evcom_reader stderr_reader_;
  evcom_writer stdin_writer_;

  ev_child child_watcher_;

  int stdout_fd_;
  int stderr_fd_;
  int stdin_fd_;

  enum encoding stdout_encoding_;
  enum encoding stderr_encoding_;

  pid_t pid_;

  bool got_chld_;
  int exit_code_;
};

} // namespace node
#endif //  node_child_process_h
