#
# RTEMS Project (https://www.rtems.org/)
#
# Copyright (c) 2021 Regents of University of Colorado
# Written by Vijay Kumar Banerjee <vijay@rtems.org>.
# All rights reserved.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions
#  are met:
#  1. Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#  2. Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
#  "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
#  LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
#  A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
#  OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
#  SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
#  LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
#  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
#  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
#  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
#  OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

import os

from rtems_waf import rtems

subdirs = [
    'ftp01', 'loopback', 'networking01', 'pppd', 'resolve', 'syscall01',
    'telnetd01', 'telnetd02'
]


def net_config_header(bld):
    if not os.path.exists(bld.env.NET_CONFIG):
        bld.fatal('network configuraiton \'%s\' not found' %
                  (bld.env.NET_CONFIG))
    net_tags = [
        'NET_CFG_IFACE', 'NET_CFG_BOOT_PROT', 'NET_CFG_SELF_IP',
        'NET_CFG_NETMASK', 'NET_CFG_MAC_ADDR', 'NET_CFG_GATEWAY_IP',
        'NET_CFG_DOMAINNAME', 'NET_CFG_DNS_IP', 'NET_CFG_NTP_IP'
    ]
    try:
        net_cfg_lines = open(bld.env.NET_CONFIG).readlines()
    except:
        bld.fatal('network configuraiton \'%s\' read failed' %
                  (bld.env.NET_CONFIG))
    lc = 0
    sed = 'sed '
    net_defaults = {}
    for l in net_cfg_lines:
        lc += 1
        if not l.strip().startswith('NET_CFG_'):
            bld.fatal('network configuration \'%s\' ' \
                      'invalid config: %d: %s' % (bld.env.NET_CONFIG, lc, l))
        ls = l.split('=')
        if len(ls) != 2:
            bld.fatal('network configuration \'%s\' ' \
                      'parse error: %d: %s' % (bld.env.NET_CONFIG, lc, l))
        lhs = ls[0].strip()
        rhs = ls[1].strip()
        if lhs in net_tags:
            net_defaults[lhs] = rhs
        else:
            bld.fatal('network configuration \'%s\' ' \
                      'invalid config: %d: %s' % (bld.env.NET_CONFIG, lc, l))
    for cfg in net_defaults:
        sed += "-e 's/@%s@/%s/' " % (cfg, net_defaults[cfg])
    bld(target=bld.env.NETWORK_CONFIG,
        source=bld.path.find_node('include/network-config.h.in'),
        rule=sed + ' < ${SRC} > ${TGT}',
        shell=True)


def recurse(ctx):
    for sd in subdirs:
        ctx.recurse(sd)


def init(ctx):
    pass


def options(opt):
    copts = opt.option_groups['configure options']
    copts.add_option('--net-test-config',
                     default='config.inc',
                     dest='net_config',
                     help='Network test configuration (default: %default)')


def configure(conf):
    recurse(conf)


def build(bld):
    net_config_header(bld)
    bld.add_group()
    bld.recurse('support')
    bld.add_group()
    recurse(bld)