// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
// 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 filesystem.cc C++ API <i>mobius.vfs.filesystem</i> class wrapper
//! \author Eduardo Aguiar
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
#include <pymobius.h>
#include <pygil.h>
#include "filesystem.h"
#include <mobius/exception.inc>
#include <stdexcept>
#include "io/folder.h"
#include "io/reader.h"
#include "pod/data.h"
#include "pod/map.h"

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Check if value is an instance of <i>filesystem</i>
//! \param value Python value
//! \return true/false
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
bool
pymobius_vfs_filesystem_check (PyObject *value)
{
  return mobius::py::isinstance (value, &vfs_filesystem_t);
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Create <i>filesystem</i> Python object from C++ object
//! \param obj C++ object
//! \return New filesystem object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyObject *
pymobius_vfs_filesystem_to_pyobject (const mobius::vfs::filesystem& obj)
{
  return mobius::py::to_pyobject_nullable <vfs_filesystem_o> (obj, &vfs_filesystem_t);
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Create <i>filesystem</i> C++ object from Python object
//! \param value Python value
//! \return Filesystem object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
mobius::vfs::filesystem
pymobius_vfs_filesystem_from_pyobject (PyObject *value)
{
  return mobius::py::from_pyobject <vfs_filesystem_o> (value, &vfs_filesystem_t);
}

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

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

  return ret;
}

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

  try
    {
      ret = mobius::py::pylong_from_std_uint64_t (self->obj->get_offset ());
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
    }

  return ret;
}

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

  try
    {
      ret = mobius::py::pylong_from_std_uint64_t (self->obj->get_size ());
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
    }

  return ret;
}

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

  try
    {
      ret = mobius::py::pystring_from_std_string (self->obj->get_type ());
    }
  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 (vfs_filesystem_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>metadata</i> Attribute getter
//! \param self Object
//! \return <i>metadata</i> attribute
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_getter_metadata (vfs_filesystem_o *self)
{
  PyObject *ret = nullptr;

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

  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Getters and setters structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyGetSetDef tp_getset[] =
{
  {
    (char *) "reader",
    (getter) tp_getter_reader,
    (setter) 0,
    (char *) "Volume reader object",
    NULL
  },
  {
    (char *) "offset",
    (getter) tp_getter_offset,
    (setter) 0,
    (char *) "Offset from the beginning of volume",
    NULL
  },
  {
    (char *) "size",
    (getter) tp_getter_size,
    (setter) 0,
    (char *) "Size in bytes",
    NULL
  },
  {
    (char *) "type",
    (getter) tp_getter_type,
    (setter) 0,
    (char *) "Filesystem type",
    NULL
  },
  {
    (char *) "name",
    (getter) tp_getter_name,
    (setter) 0,
    (char *) "Filesystem name",
    NULL
  },
  {
    (char *) "metadata",
    (getter) tp_getter_metadata,
    (setter) 0,
    (char *) "Metadata",
    NULL
  },
  {NULL, NULL, NULL, NULL, NULL} // sentinel
};

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>get_metadata</i> method implementation
//! \param self Object
//! \param args Argument list
//! \return Data object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_get_metadata (vfs_filesystem_o *self, PyObject *args)
{
  // Parse input args
  std::string arg_name;

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

  // Execute C++ function
  PyObject *ret = nullptr;

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

  // Return value
  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>get_root_folder</i> method implementation
//! \param self Object
//! \param args Argument list
//! \return Root folder
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_f_get_root_folder (vfs_filesystem_o *self, PyObject *)
{
  // Execute C++ function
  PyObject *ret = nullptr;

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

  // Return value
  return ret;
}

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Methods structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyMethodDef tp_methods[] =
{
  {
    (char *) "get_metadata",
    (PyCFunction) tp_f_get_metadata,
    METH_VARARGS,
    "Get metadata item"
  },
  {
    (char *) "get_root_folder",
    (PyCFunction) tp_f_get_root_folder,
    METH_VARARGS,
    "Get root folder"
  },
  {NULL, NULL, 0, NULL} // sentinel
};

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief <i>filesystem</i> Constructor
//! \param type Type object
//! \param args Argument list
//! \param kwds Keywords dict
//! \return new <i>filesystem</i> object
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
static PyObject *
tp_new (PyTypeObject *, PyObject *args, PyObject *)
{
  // Parse input args
  mobius::io::reader arg_reader;
  std::uint64_t arg_offset;
  std::string arg_type;

  try
    {
      arg_reader = mobius::py::get_arg_as_cpp (args, 0, pymobius_io_reader_from_pyobject);
      arg_offset = mobius::py::get_arg_as_uint64_t (args, 1);
      arg_type = mobius::py::get_arg_as_std_string (args, 2, "autodetect");
    }
  catch (const std::exception& e)
    {
      mobius::py::set_invalid_type_error (e.what ());
      return nullptr;
    }

  // Run C++ code
  PyObject *ret = nullptr;

  try
    {
      mobius::vfs::filesystem fs;

      {
        mobius::py::GIL gil;
        fs = mobius::vfs::filesystem (arg_reader, arg_offset, arg_type);
      }

      ret = pymobius_vfs_filesystem_to_pyobject (fs);
    }
  catch (const std::exception& e)
    {
      mobius::py::set_runtime_error (e.what ());
    }

  return ret;
}

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

// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//! \brief Type structure
// =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
PyTypeObject vfs_filesystem_t =
{
  PyVarObject_HEAD_INIT (NULL, 0)
  "mobius.vfs.filesystem",      			// tp_name
  sizeof (vfs_filesystem_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
  "filesystem 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
};
