#!/usr/bin/env python

import sys
from waflib import Logs
from samba_utils import save_file

def configure(conf):
    if not sys.platform.startswith('linux'):
        Logs.warn('libngtcp2 requires linux')
        conf.SET_TARGET_TYPE('ngtcp2', 'EMPTY')
        return

    if not conf.CONFIG_GET('HAVE_GNUTLS_CB_TLS_SERVER_END_POINT'):
        Logs.warn('libngtcp2 requires gnutls 3.7.2')
        conf.SET_TARGET_TYPE('ngtcp2', 'EMPTY')
        return

    if conf.CHECK_LIBNGTCP2():
        conf.DEFINE('HAVE_LIBNGTCP2', '1')
        conf.define('USING_SYSTEM_LIBNGTCP2', 1)
        return

    conf.ADD_NAMED_CFLAGS('LIBNGTCP2_UNPICKY_CFLAGS',
                          '-Wno-cast-qual',
                          testflags=True)
    conf.ADD_NAMED_CFLAGS('LIBNGTCP2_UNPICKY_CFLAGS',
                          '-Wno-error=cast-qual',
                          testflags=True)
    conf.ADD_NAMED_CFLAGS('LIBNGTCP2_UNPICKY_CFLAGS',
                          '-Wno-strict-aliasing',
                          testflags=True)
    conf.ADD_NAMED_CFLAGS('LIBNGTCP2_UNPICKY_CFLAGS',
                          '-Wno-error=strict-aliasing',
                          testflags=True)
    conf.ADD_NAMED_CFLAGS('LIBNGTCP2_UNPICKY_CFLAGS',
                          '-Wno-strict-overflow',
                          testflags=True)
    conf.ADD_NAMED_CFLAGS('LIBNGTCP2_UNPICKY_CFLAGS',
                          '-Wno-error=strict-overflow',
                          testflags=True)
    conf.ADD_NAMED_CFLAGS('LIBNGTCP2_UNPICKY_CFLAGS',
                          '-Wno-error=format-nonliteral',
                          testflags=True)
    conf.ADD_NAMED_CFLAGS('LIBNGTCP2_UNPICKY_CFLAGS',
                          '-Wno-error=implicit-fallthrough',
                          testflags=True)

    conf.DEFINE('HAVE_LIBNGTCP2', '1')
    return

def build(bld):
    if bld.CONFIG_SET('USING_SYSTEM_LIBNGTCP2'):
        return

    def generate_ngtcp2_version_h(task):
        ngtcp2_version_h = task.outputs[0].bldpath(task.env)
        h = '''
        #ifndef NGTCP2_VERSION_H
        #define NGTCP2_VERSION_H
        #define NGTCP2_VERSION "1.11.0"
        #define NGTCP2_VERSION_NUM 0x010b00
        #endif
        '''

        save_file(ngtcp2_version_h, h, create_dir=True)
        return 0

    ngtcp2_version_h = 'lib/includes/ngtcp2/version.h'
    bld.SAMBA_GENERATOR(ngtcp2_version_h,
                        target=ngtcp2_version_h,
                        rule=generate_ngtcp2_version_h,
                        enabled=bld.CONFIG_SET('HAVE_LIBNGTCP2'))

    bld.SAMBA_LIBRARY('ngtcp2',
                      source='''
                      lib/ngtcp2_acktr.c
                      lib/ngtcp2_addr.c
                      lib/ngtcp2_balloc.c
                      lib/ngtcp2_bbr.c
                      lib/ngtcp2_buf.c
                      lib/ngtcp2_callbacks.c
                      lib/ngtcp2_cc.c
                      lib/ngtcp2_cid.c
                      lib/ngtcp2_conn.c
                      lib/ngtcp2_conn_info.c
                      lib/ngtcp2_conv.c
                      lib/ngtcp2_crypto.c
                      lib/ngtcp2_dcidtr.c
                      lib/ngtcp2_err.c
                      lib/ngtcp2_frame_chain.c
                      lib/ngtcp2_gaptr.c
                      lib/ngtcp2_idtr.c
                      lib/ngtcp2_ksl.c
                      lib/ngtcp2_log.c
                      lib/ngtcp2_map.c
                      lib/ngtcp2_mem.c
                      lib/ngtcp2_objalloc.c
                      lib/ngtcp2_opl.c
                      lib/ngtcp2_path.c
                      lib/ngtcp2_pcg.c
                      lib/ngtcp2_pkt.c
                      lib/ngtcp2_pmtud.c
                      lib/ngtcp2_ppe.c
                      lib/ngtcp2_pq.c
                      lib/ngtcp2_pv.c
                      lib/ngtcp2_qlog.c
                      lib/ngtcp2_range.c
                      lib/ngtcp2_ratelim.c
                      lib/ngtcp2_ringbuf.c
                      lib/ngtcp2_rob.c
                      lib/ngtcp2_rst.c
                      lib/ngtcp2_rtb.c
                      lib/ngtcp2_settings.c
                      lib/ngtcp2_str.c
                      lib/ngtcp2_strm.c
                      lib/ngtcp2_transport_params.c
                      lib/ngtcp2_unreachable.c
                      lib/ngtcp2_vec.c
                      lib/ngtcp2_version.c
                      lib/ngtcp2_window_filter.c
                      ''',
                      includes='crypto/includes lib/includes crypto lib',
                      deps='replace',
                      cflags_end=bld.env.LIBNGTCP2_UNPICKY_CFLAGS,
                      private_library=True,
                      enabled=bld.CONFIG_SET('HAVE_LIBNGTCP2'))
    bld.SAMBA_SUBSYSTEM('libngtcp2', source='', public_deps='ngtcp2',
                        enabled=bld.CONFIG_SET('HAVE_LIBNGTCP2'))
    bld.SAMBA_LIBRARY('ngtcp2_crypto_gnutls',
                      source='''
                      crypto/shared.c
                      crypto/gnutls/gnutls.c
                      ''',
                      includes='crypto/includes lib/includes crypto lib',
                      deps='replace',
                      public_deps='libngtcp2 gnutls',
                      cflags_end=bld.env.LIBNGTCP2_UNPICKY_CFLAGS,
                      private_library=True,
                      enabled=bld.CONFIG_SET('HAVE_LIBNGTCP2'))
    bld.SAMBA_SUBSYSTEM('libngtcp2_crypto_gnutls', source='', public_deps='ngtcp2_crypto_gnutls',
                        enabled=bld.CONFIG_SET('HAVE_LIBNGTCP2'))