{ fetchFromGitHub, stdenv, lib, pkgconfig, autoreconfHook
, ncurses, gnutls, readline
, openssl, perl, sqlite, libjpeg, speex, pcre
, ldns, libedit, yasm, which, libsndfile, libtiff

, curl, lua, libmysqlclient, postgresql, libopus, libctb, gsmlib

, SystemConfiguration

, modules ? null
, nixosTests
}:

let

availableModules = import ./modules.nix {
  inherit curl lua libmysqlclient postgresql libopus libctb gsmlib;
};

# the default list from v1.8.7, except with applications/mod_signalwire also disabled
defaultModules = mods: with mods; [
  applications.commands
  applications.conference
  applications.db
  applications.dptools
  applications.enum
  applications.esf
  applications.expr
  applications.fifo
  applications.fsv
  applications.hash
  applications.httapi
  applications.sms
  applications.spandsp
  applications.valet_parking
  applications.voicemail

  applications.curl

  codecs.amr
  codecs.b64
  codecs.g723_1
  codecs.g729
  codecs.h26x
  codecs.opus

  databases.mariadb
  databases.pgsql

  dialplans.asterisk
  dialplans.xml

  endpoints.loopback
  endpoints.rtc
  endpoints.skinny
  endpoints.sofia
  endpoints.verto

  event_handlers.cdr_csv
  event_handlers.cdr_sqlite
  event_handlers.event_socket

  formats.local_stream
  formats.native_file
  formats.png
  formats.sndfile
  formats.tone_stream

  languages.lua

  loggers.console
  loggers.logfile
  loggers.syslog

  say.en

  xml_int.cdr
  xml_int.rpc
  xml_int.scgi
] ++ lib.optionals stdenv.isLinux [ endpoints.gsmopen ];

enabledModules = (if modules != null then modules else defaultModules) availableModules;

modulesConf = let
  lst = builtins.map (mod: mod.path) enabledModules;
  str = lib.strings.concatStringsSep "\n" lst;
  in builtins.toFile "modules.conf" str;

in

stdenv.mkDerivation rec {
  pname = "freeswitch";
  version = "1.10.3";
  src = fetchFromGitHub {
    owner = "signalwire";
    repo = pname;
    rev = "v${version}";
    sha256 = "0rp4sxqxd2wsb5iyv0mh11l16zxvh7rbgfg0vcgns823gvh8lqai";
  };
  postPatch = ''
    patchShebangs     libs/libvpx/build/make/rtcd.pl
    substituteInPlace libs/libvpx/build/make/configure.sh \
      --replace AS=\''${AS} AS=yasm
  '';

  nativeBuildInputs = [ pkgconfig autoreconfHook ];
  buildInputs = [
    openssl ncurses gnutls readline perl libjpeg
    sqlite pcre speex ldns libedit yasm which
    libsndfile libtiff
  ]
  ++ lib.unique (lib.concatMap (mod: mod.inputs) enabledModules)
  ++ lib.optionals stdenv.isDarwin [ SystemConfiguration ];

  enableParallelBuilding = true;

  NIX_CFLAGS_COMPILE = "-Wno-error";

  hardeningDisable = [ "format" ];

  preConfigure = ''
    ./bootstrap.sh
    cp "${modulesConf}" modules.conf
  '';

  postInstall = ''
    # helper for compiling modules... not generally useful; also pulls in perl dependency
    rm "$out"/bin/fsxs
    # include configuration templates
    cp -r conf $out/share/freeswitch/
  '';

  passthru.tests.freeswitch = nixosTests.freeswitch;

  meta = {
    description = "Cross-Platform Scalable FREE Multi-Protocol Soft Switch";
    homepage = "https://freeswitch.org/";
    license = stdenv.lib.licenses.mpl11;
    maintainers = with stdenv.lib.maintainers; [ misuzu ];
    platforms = with stdenv.lib.platforms; unix;
  };
}