# Copyright (C) 2014-2016 Intel Corporation.   All Rights Reserved.
#
# Permission is hereby granted, free of charge, to any person obtaining a
# copy of this software and associated documentation files (the "Software"),
# to deal in the Software without restriction, including without limitation
# the rights to use, copy, modify, merge, publish, distribute, sublicense,
# and/or sell copies of the Software, and to permit persons to whom the
# Software is furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice (including the next
# paragraph) shall be included in all copies or substantial portions of the
# Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
# THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
# IN THE SOFTWARE.

# Python source
from __future__ import print_function
import os
import sys
import argparse
import knob_defs
from mako.template import Template
from mako.exceptions import RichTraceback

def write_template_to_string(template_filename, **kwargs):
    try:
        template = Template(filename=os.path.abspath(template_filename))
        # Split + Join fixes line-endings for whatever platform you are using
        return '\n'.join(template.render(**kwargs).splitlines())
    except:
        traceback = RichTraceback()
        for (filename, lineno, function, line) in traceback.traceback:
            print("File %s, line %s, in %s" % (filename, lineno, function))
            print(line, "\n")
        print("%s: %s" % (str(traceback.error.__class__.__name__), traceback.error))

def write_template_to_file(template_filename, output_filename, **kwargs):
    output_dirname = os.path.dirname(output_filename)
    if not os.path.exists(output_dirname):
        os.makedirs(output_dirname)
    with open(output_filename, "w") as outfile:
        print(write_template_to_string(template_filename, **kwargs), file=outfile)

def main(args=sys.argv[1:]):

    # parse args
    parser = argparse.ArgumentParser()
    parser.add_argument("--input", "-i", help="Path to knobs.template", required=True)
    parser.add_argument("--output", "-o", help="Path to output file", required=True)
    parser.add_argument("--gen_h", "-gen_h", help="Generate gen_knobs.h", action="store_true", default=False)
    parser.add_argument("--gen_cpp", "-gen_cpp", help="Generate gen_knobs.cpp", action="store_true", required=False)

    args = parser.parse_args()

    if args.input:
        if args.gen_h:
            write_template_to_file(args.input,
                                   args.output,
                                   filename='gen_knobs',
                                   knobs=knob_defs.KNOBS,
                                   includes=['core/knobs_init.h', 'common/os.h', 'sstream', 'iomanip'],
                                   gen_header=True)

        if args.gen_cpp:
            write_template_to_file(args.input,
                                   args.output,
                                   filename='gen_knobs',
                                   knobs=knob_defs.KNOBS,
                                   includes=['core/knobs_init.h', 'common/os.h', 'sstream', 'iomanip'],
                                   gen_header=False)

    return 0

if __name__ == '__main__':
    sys.exit(main())