# -*- Mode: python; py-indent-offset: 4; indent-tabs-mode: nil; coding: utf-8; -*-

"""
Copyright (c) 2014-2015,  Regents of the University of California

This file is part of ndn-group-encrypt (Group-based Encryption Protocol for NDN).
See AUTHORS.md for complete list of ndn-group-encrypt authors and contributors.

ndn-group-encrypt 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 3 of the License, or (at your option) any later version.

ndn-group-encrypt 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
ndn-group-encrypt, e.g., in COPYING.md file.  If not, see <http://www.gnu.org/licenses/>.
"""

VERSION = "0.0.1"
APPNAME = "libndn-group-encrypt"
PACKAGE_BUGREPORT = "http://redmine.named-data.net/projects/gep"
PACKAGE_URL = "http://named-data.net/doc/ndn-group-encrypt/"
GIT_TAG_PREFIX = "ndn-group-encrypt"

from waflib import Logs, Utils, Context
import os

def options(opt):
    opt.load(['compiler_c', 'compiler_cxx', 'gnu_dirs'])
    opt.load(['boost', 'default-compiler-flags', 'sanitizers', 'doxygen'],
             tooldir=['.waf-tools'])

    syncopt = opt.add_option_group ("NDN-GROUP-ENCRYPT Options")

    syncopt.add_option('--debug', action='store_true', default=False, dest='debug',
                       help='''debugging mode''')
    syncopt.add_option('--with-tests', action='store_true', default=False, dest='_tests',
                       help='''build unit tests''')

def configure(conf):
    conf.load(['compiler_c', 'compiler_cxx', 'gnu_dirs', 'boost', 'default-compiler-flags', 'sanitizers', 'doxygen'])

    if 'PKG_CONFIG_PATH' not in os.environ:
        os.environ['PKG_CONFIG_PATH'] = Utils.subst_vars('${LIBDIR}/pkgconfig', conf.env)
    conf.check_cfg(package='libndn-cxx', args=['--cflags', '--libs'],
                   uselib_store='NDN_CXX', mandatory=True)

    boost_libs = 'system iostreams'
    if conf.options._tests:
        conf.env['NDN_GEP_HAVE_TESTS'] = 1
        conf.define('NDN_GEP_HAVE_TESTS', 1);
        boost_libs += ' unit_test_framework'

    conf.check_boost(lib=boost_libs)

    conf.write_config_header('config.hpp')

def build(bld):
    libndn_group_encrypt = bld(
        target="ndn-group-encrypt",
        # vnum = "0.0.1",
        features=['cxx', 'cxxshlib'],
        source =  bld.path.ant_glob(['src/**/*.cpp']),
        use = 'BOOST NDN_CXX CRYPTOPP',
        includes = ['src', '.'],
        export_includes=['src', '.'],
        )

    # Unit tests
    if bld.env["NDN_GEP_HAVE_TESTS"]:
        bld.recurse('tests')

    bld.install_files(
        dest = "%s/ndn-group-encrypt" % bld.env['INCLUDEDIR'],
        files = bld.path.ant_glob(['src/**/*.hpp', 'src/**/*.h', 'common.hpp']),
        cwd = bld.path.find_dir("src"),
        relative_trick = True,
        )


    bld.install_files(
        dest = "%s/ndn-group-encrypt" % bld.env['INCLUDEDIR'],
        files = bld.path.get_bld().ant_glob(['src/**/*.hpp', 'common.hpp', 'config.hpp']),
        cwd = bld.path.get_bld().find_dir("src"),
        relative_trick = False,
        )

    bld(features = "subst",
        source='ndn-group-encrypt.pc.in',
        target='ndn-group-encrypt.pc',
        install_path = '${LIBDIR}/pkgconfig',
        PREFIX       = bld.env['PREFIX'],
        INCLUDEDIR   = "%s/ndn-group-encrypt" % bld.env['INCLUDEDIR'],
        VERSION      = VERSION,
        )

def docs(bld):
    from waflib import Options
    Options.commands = ['doxygen'] + Options.commands

def doxygen(bld):
    version(bld)

    if not bld.env.DOXYGEN:
        Logs.error("ERROR: cannot build documentation (`doxygen' is not found in $PATH)")
    else:
        bld(features="subst",
            name="doxygen-conf",
            source=["docs/doxygen.conf.in",
                    "docs/named_data_theme/named_data_footer-with-analytics.html.in"],
            target=["docs/doxygen.conf",
                    "docs/named_data_theme/named_data_footer-with-analytics.html"],
            VERSION=VERSION,
            HTML_FOOTER="../build/docs/named_data_theme/named_data_footer-with-analytics.html" \
                          if os.getenv('GOOGLE_ANALYTICS', None) \
                          else "../docs/named_data_theme/named_data_footer.html",
            GOOGLE_ANALYTICS=os.getenv('GOOGLE_ANALYTICS', ""),
            )

        bld(features="doxygen",
            doxyfile='docs/doxygen.conf',
            use="doxygen-conf")

def version(ctx):
    if getattr(Context.g_module, 'VERSION_BASE', None):
        return

    Context.g_module.VERSION_BASE = Context.g_module.VERSION
    Context.g_module.VERSION_SPLIT = [v for v in VERSION_BASE.split('.')]

    didGetVersion = False
    try:
        cmd = ['git', 'describe', '--always', '--match', '%s*' % GIT_TAG_PREFIX]
        p = Utils.subprocess.Popen(cmd, stdout=Utils.subprocess.PIPE,
                                   stderr=None, stdin=None)
        out = str(p.communicate()[0].strip())
        didGetVersion = (p.returncode == 0 and out != "")
        if didGetVersion:
            if out.startswith(GIT_TAG_PREFIX):
                Context.g_module.VERSION = out[len(GIT_TAG_PREFIX):]
            else:
                Context.g_module.VERSION = "%s-commit-%s" % (Context.g_module.VERSION_BASE, out)
    except OSError:
        pass

    versionFile = ctx.path.find_node('VERSION')

    if not didGetVersion and versionFile is not None:
        try:
            Context.g_module.VERSION = versionFile.read()
            return
        except (OSError, IOError):
            pass

    # version was obtained from git, update VERSION file if necessary
    if versionFile is not None:
        try:
            version = versionFile.read()
            if version == Context.g_module.VERSION:
                return # no need to update
        except (OSError, IOError):
            Logs.warn("VERSION file exists, but not readable")
    else:
        versionFile = ctx.path.make_node('VERSION')

    if versionFile is None:
        return

    try:
        versionFile.write(Context.g_module.VERSION)
    except (OSError, IOError):
        Logs.warn("VERSION file is not writeable")

def dist(ctx):
    version(ctx)

def distcheck(ctx):
    version(ctx)