#!/usr/bin/env python
#    Copyright 2014-2015 ARM Limited
#
# 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.
#


import os
import sys
import shutil

from wlauto import ExtensionLoader
from wlauto.utils.doc import get_rst_from_extension, underline
from wlauto.utils.misc import capitalize


GENERATE_FOR = ['workload', 'instrument', 'result_processor', 'device']


def generate_extension_documentation(source_dir, outdir, ignore_paths):
    loader = ExtensionLoader(keep_going=True)
    loader.clear()
    loader.update(paths=[source_dir], ignore_paths=ignore_paths)
    if os.path.exists(outdir):
        shutil.rmtree(outdir)
    os.makedirs(outdir)
    for ext_type in loader.extension_kinds:
        if not ext_type in GENERATE_FOR:
            continue
        outfile = os.path.join(outdir, '{}s.rst'.format(ext_type))
        with open(outfile, 'w') as wfh:
            wfh.write('.. _{}s:\n\n'.format(ext_type))
            wfh.write(underline(capitalize('{}s'.format(ext_type))))
            exts = loader.list_extensions(ext_type)
            for ext in sorted(exts, key=lambda x: x.name):
                wfh.write(get_rst_from_extension(ext))


if __name__ == '__main__':
    generate_extension_documentation(sys.argv[2], sys.argv[1], sys.argv[3:])
