/* Copyright 2017 - 2022 R. Thomas
 * Copyright 2017 - 2022 Quarkslab
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include "pyMachO.hpp"
#include "pyIterators.hpp"

#include "LIEF/MachO/hash.hpp"
#include "LIEF/MachO/SegmentCommand.hpp"
#include "LIEF/MachO/Section.hpp"

#include <string>
#include <sstream>

namespace LIEF {
namespace MachO {

template<class T>
using getter_t = T (SegmentCommand::*)(void) const;

template<class T>
using setter_t = void (SegmentCommand::*)(T);

template<class T>
using no_const_getter = T (SegmentCommand::*)(void);


template<>
void create<SegmentCommand>(py::module& m) {

  py::class_<SegmentCommand, LoadCommand> seg_cmd(m, "SegmentCommand",
      R"delim(
      Class which represents a LOAD_COMMAND_TYPES::LC_SEGMENT / LOAD_COMMAND_TYPES::LC_SEGMENT_64 command
      )delim");

    init_ref_iterator<SegmentCommand::it_sections>(seg_cmd, "it_sections");

  try {
    /*
     * it_relocations could be already registered by the Section
     */
    init_ref_iterator<SegmentCommand::it_relocations>(seg_cmd, "it_relocations");
  } catch (const std::runtime_error&) { }

  seg_cmd
    .def(py::init<>())
    .def(py::init<const std::string&>())
    .def(py::init<const std::string&, const SegmentCommand::content_t&>())

    .def_property("name",
        [] (const SegmentCommand& obj) {
          return safe_string_converter(obj.name());
        },
        static_cast<setter_t<const std::string&>>(&SegmentCommand::name),
        "Segment's name")

    .def_property("virtual_address",
        static_cast<getter_t<uint64_t>>(&SegmentCommand::virtual_address),
        static_cast<setter_t<uint64_t>>(&SegmentCommand::virtual_address),
        "Segment's virtual address")

    .def_property("virtual_size",
        static_cast<getter_t<uint64_t>>(&SegmentCommand::virtual_size),
        static_cast<setter_t<uint64_t>>(&SegmentCommand::virtual_size),
        "Segment's virtual size")

    .def_property("file_size",
        static_cast<getter_t<uint64_t>>(&SegmentCommand::file_size),
        static_cast<setter_t<uint64_t>>(&SegmentCommand::file_size),
        "Segment's file size")

    .def_property("file_offset",
        static_cast<getter_t<uint64_t>>(&SegmentCommand::file_offset),
        static_cast<setter_t<uint64_t>>(&SegmentCommand::file_offset),
        "Segment's file offset")

    .def_property("max_protection",
        static_cast<getter_t<uint32_t>>(&SegmentCommand::max_protection),
        static_cast<setter_t<uint32_t>>(&SegmentCommand::max_protection),
        "Segment's max protection")

    .def_property("init_protection",
        static_cast<getter_t<uint32_t>>(&SegmentCommand::init_protection),
        static_cast<setter_t<uint32_t>>(&SegmentCommand::init_protection),
        "Segment's initial protection")

    .def_property("numberof_sections",
        static_cast<getter_t<uint32_t>>(&SegmentCommand::numberof_sections),
        static_cast<setter_t<uint32_t>>(&SegmentCommand::numberof_sections),
        "Number of sections in this segment")

    .def_property_readonly("sections",
        static_cast<no_const_getter<SegmentCommand::it_sections>>(&SegmentCommand::sections),
        "Segment's sections")

    .def_property_readonly("relocations",
        static_cast<no_const_getter<SegmentCommand::it_relocations>>(&SegmentCommand::relocations),
        "Segment's relocations")

    .def_property_readonly("index", &SegmentCommand::index,
        "Relative index of the segment in the segment table")

    .def_property("content",
        [] (const SegmentCommand& self) {
          span<const uint8_t> content = self.content();
          return py::memoryview::from_memory(content.data(), content.size());
        },
        static_cast<setter_t<SegmentCommand::content_t>>(&SegmentCommand::content),
        "Segment's content")

    .def_property("flags",
        static_cast<getter_t<uint32_t>>(&SegmentCommand::flags),
        static_cast<setter_t<uint32_t>>(&SegmentCommand::flags),
        "Segment's flags")

    .def("has",
        static_cast<bool(SegmentCommand::*)(const Section&) const>(&SegmentCommand::has),
        "Check if the given " RST_CLASS_REF(lief.MachO.Section) " belongs to the current segment",
        "section"_a)

    .def("has_section",
        static_cast<bool(SegmentCommand::*)(const std::string&) const>(&SegmentCommand::has_section),
        "Check if the given section name belongs to the current segment",
        "section_name"_a)

    .def("add_section",
        static_cast<Section& (SegmentCommand::*)(const Section&)>(&SegmentCommand::add_section),
        "",
        "section"_a,
        py::return_value_policy::reference)

    .def("__eq__", &SegmentCommand::operator==)
    .def("__ne__", &SegmentCommand::operator!=)
    .def("__hash__",
        [] (const SegmentCommand& segment_command) {
          return Hash::hash(segment_command);
        })


    .def("__str__",
        [] (const SegmentCommand& segment)
        {
          std::ostringstream stream;
          stream << segment;
          std::string str =  stream.str();
          return str;
        });

}

}
}


