// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// Mobius Forensic Toolkit
// Copyright (C) 2008,2009,2010,2011,2012,2013,2014,2015,2016,2017,2018,2019,2020,2021,2022,2023 Eduardo Aguiar
//
// This program is free software; you can redistribute it and/or modify it
// under the terms of the GNU General Public License as published by the
// Free Software Foundation; either version 2, or (at your option) any later
// version.
//
// This program is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General
// Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \file extension.cc C++ API <i>mobius.core.extension</i> class wrapper
//! \author Eduardo Aguiar
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#include <pymobius.h>
#include "extension.h"
#include <mobius/exception.inc>
#include <stdexcept>

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Check if value is an instance of <i>extension</i>
//! \param value Python value
//! \return true/false
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
bool
pymobius_core_extension_check (PyObject *value)
{
  return PyObject_IsInstance (value, reinterpret_cast<PyObject *> (&core_extension_t));
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Create <i>extension</i> Python object from C++ object
//! \param obj C++ object
//! \return New extension object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyObject *
pymobius_core_extension_to_pyobject (const mobius::core::extension& obj)
{
  PyObject *ret = _PyObject_New (&core_extension_t);

  if (ret)
    ((core_extension_o *) ret)->obj = new mobius::core::extension (obj);

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Create <i>extension</i> C++ object from Python object
//! \param value Python value
//! \return Extension object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
mobius::core::extension
pymobius_core_extension_from_pyobject (PyObject *value)
{
  if (!pymobius_core_extension_check (value))
    throw std::invalid_argument (mobius::MOBIUS_EXCEPTION_MSG ("object must be an instance of mobius.core.extension"));

  return * (reinterpret_cast <core_extension_o *>(value)->obj);
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>id</i> Attribute getter
//! \param self Object
//! \return <i>id</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_id (core_extension_o *self)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pystring_from_std_string (self->obj->get_id ());
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>name</i> Attribute getter
//! \param self Object
//! \return <i>name</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_name (core_extension_o *self)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pystring_from_std_string (self->obj->get_name ());
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>version</i> Attribute getter
//! \param self Object
//! \return <i>version</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_version (core_extension_o *self)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pystring_from_std_string (self->obj->get_version ());
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>authors</i> Attribute getter
//! \param self Object
//! \return <i>authors</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_authors (core_extension_o *self)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pystring_from_std_string (self->obj->get_authors ());
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>description</i> Attribute getter
//! \param self Object
//! \return <i>description</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_description (core_extension_o *self)
{
  PyObject *ret = nullptr;

  try
    {
      ret = mobius::py::pystring_from_std_string (self->obj->get_description ());
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
    }

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Getters and setters structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyGetSetDef tp_getset[] =
{
  {
    (char *) "id",
    (getter) tp_getter_id,
    (setter) 0,
    (char *) "Extension ID",
    NULL
  },
  {
    (char *) "name",
    (getter) tp_getter_name,
    (setter) 0,
    (char *) "Extension name",
    NULL
  },
  {
    (char *) "version",
    (getter) tp_getter_version,
    (setter) 0,
    (char *) "Extension version",
    NULL
  },
  {
    (char *) "authors",
    (getter) tp_getter_authors,
    (setter) 0,
    (char *) "Authors",
    NULL
  },
  {
    (char *) "description",
    (getter) tp_getter_description,
    (setter) 0,
    (char *) "Description",
    NULL
  },
  {NULL, NULL, NULL, NULL, NULL} // sentinel
};

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>start</i> method implementation
//! \param self Object
//! \param args Argument list
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_start (core_extension_o *self, PyObject *)
{
  // Execute C++ function
  try
    {
      self->obj->start ();
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
      return nullptr;
    }

  // return None
  return mobius::py::pynone ();
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>stop</i> method implementation
//! \param self Object
//! \param args Argument list
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_stop (core_extension_o *self, PyObject *)
{
  // Execute C++ function
  try
    {
      self->obj->stop ();
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
      return nullptr;
    }

  // return None
  return mobius::py::pynone ();
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>install</i> method implementation
//! \param self Object
//! \param args Argument list
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_install (core_extension_o *self, PyObject *)
{
  // Execute C++ function
  try
    {
      self->obj->install ();
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
      return nullptr;
    }

  // return None
  return mobius::py::pynone ();
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>uninstall</i> method implementation
//! \param self Object
//! \param args Argument list
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_uninstall (core_extension_o *self, PyObject *)
{
  // Execute C++ function
  try
    {
      self->obj->uninstall ();
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
      return nullptr;
    }

  // return None
  return mobius::py::pynone ();
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Methods structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyMethodDef tp_methods[] =
{
  {
    (char *) "start",
    (PyCFunction) tp_f_start,
    METH_VARARGS,
    "Start extension"
  },
  {
    (char *) "stop",
    (PyCFunction) tp_f_stop,
    METH_VARARGS,
    "Stop extension"
  },
  {
    (char *) "install",
    (PyCFunction) tp_f_install,
    METH_VARARGS,
    "Install extension"
  },
  {
    (char *) "uninstall",
    (PyCFunction) tp_f_uninstall,
    METH_VARARGS,
    "Uninstall extension"
  },
  {NULL, NULL, 0, NULL} // sentinel
};

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>extension</i> Constructor
//! \param type Type object
//! \param args Argument list
//! \param kwds Keywords dict
//! \return new <i>extension</i> object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_new (PyTypeObject *type, PyObject *args, PyObject *)
{
  // Parse input args
  std::string arg_path;

  try
    {
      arg_path = mobius::py::get_arg_as_std_string (args, 0);
    }
  catch (const std::exception& e)
    {
      mobius::py::set_invalid_type_error (e.what ());
      return nullptr;
    }


  // Create Python object
  core_extension_o *ret = reinterpret_cast <core_extension_o *> (type->tp_alloc (type, 0));

  if (ret)
    {
      try
        {
          ret->obj = new mobius::core::extension (arg_path);
        }
      catch (const std::exception& e)
        {
          Py_DECREF (ret);
          mobius::py::set_runtime_error (e.what ());
          ret = nullptr;
        }
    }

  return reinterpret_cast <PyObject *> (ret);
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>extension</i> deallocator
//! \param self Object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static void
tp_dealloc (core_extension_o *self)
{
  delete self->obj;
  Py_TYPE (self)->tp_free ((PyObject*) self);
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Type structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyTypeObject core_extension_t =
{
  PyVarObject_HEAD_INIT (NULL, 0)
  "mobius.core.extension",                 		// tp_name
  sizeof (core_extension_o),               		// tp_basicsize
  0,                                       		// tp_itemsize
  (destructor) tp_dealloc,                 		// tp_dealloc
  0,                                       		// tp_print
  0,                                       		// tp_getattr
  0,                                       		// tp_setattr
  0,                                       		// tp_compare
  0,                                       		// tp_repr
  0,                                       		// tp_as_number
  0,                                       		// tp_as_sequence
  0,                                       		// tp_as_mapping
  0,                                       		// tp_hash
  0,                                       		// tp_call
  0,                                       		// tp_str
  0,                                       		// tp_getattro
  0,                                       		// tp_setattro
  0,                                       		// tp_as_buffer
  Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE,		// tp_flags
  "C++ extension class",                   		// tp_doc
  0,                                       		// tp_traverse
  0,                                       		// tp_clear
  0,                                       		// tp_richcompare
  0,                                       		// tp_weaklistoffset
  0,                                       		// tp_iter
  0,                                       		// tp_iternext
  tp_methods,                              		// tp_methods
  0,                                       		// tp_members
  tp_getset,                               		// tp_getset
  0,                                       		// tp_base
  0,                                       		// tp_dict
  0,                                       		// tp_descr_get
  0,                                       		// tp_descr_set
  0,                                       		// tp_dictoffset
  0,                                       		// tp_init
  0,                                       		// tp_alloc
  tp_new,                                  		// tp_new
  0,                                       		// tp_free
  0,                                       		// tp_is_gc
  0,                                       		// tp_bases
  0,                                       		// tp_mro
  0,                                       		// tp_cache
  0,                                       		// tp_subclasses
  0,                                       		// tp_weaklist
  0,                                       		// tp_del
  0,                                       		// tp_version_tag
  0,							// tp_finalize
};
