//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
//    names, trademarks, service marks, or product names of the Licensor
//    and its affiliates, except as required to comply with Section 4(c) of
//    the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//

#include "pxr/pxr.h"

#include "pxr/base/arch/fileSystem.h"
#include "pxr/base/tf/stackTrace.h"
#include "pxr/base/tf/pyUtils.h"

#include <boost/python/def.hpp>

using namespace boost::python;

PXR_NAMESPACE_USING_DIRECTIVE

namespace {

static void
_PrintStackTrace(object &obj, const std::string &reason)
{
#if PY_MAJOR_VERSION == 2
    if (PyFile_Check(obj.ptr())) {
        FILE * file = expect_non_null(PyFile_AsFile(obj.ptr()));
        if (file)
            TfPrintStackTrace(file, reason);
    }
#else 
    int fd = PyObject_AsFileDescriptor(obj.ptr());
    if (fd >= 0)
    {
        FILE * file = expect_non_null(ArchFdOpen(fd, "w"));
        if (file)
        {
            TfPrintStackTrace(file, reason);
            fclose(file);
        }
    }
#endif
    else {
        // Wrong type for obj
        TfPyThrowTypeError("Expected file object.");
    }
}

} // anonymous namespace 

void
wrapStackTrace()
{
    def("GetStackTrace", TfGetStackTrace,
        "GetStackTrace()\n\n"
        "Return both the C++ and the python stack as a string.");
    
    def("PrintStackTrace", _PrintStackTrace,
        "PrintStackTrace(file, str)\n\n"
        "Prints both the C++ and the python stack to the file provided.");

    def("LogStackTrace", TfLogStackTrace,
        (arg("reason"), arg("logToDb")=false));

    def("GetAppLaunchTime", TfGetAppLaunchTime,
        "GetAppLaunchTime() -> int \n\n"
        "Return the time (in seconds since the epoch) at which "
        "the application was started.");
}