# yt - A fully featured command line YouTube client
#
# Copyright (C) 2024 Benedikt Peetz <benedikt.peetz@b-peetz.de>
# SPDX-License-Identifier: GPL-3.0-or-later
#
# This file is part of Yt.
#
# You should have received a copy of the License along with this program.
# If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.

{
  stdenv,
  nodejs,
  tree-sitter,
  lib,
}:
# # Build a parser grammar and put the resulting shared object in `$out/parser`
# {
#   # language name
#   language ? "yts",
#   version ? "1.0.0",
#   src ? ./.,
#   location ? null,
#   generate ? false,
#   ...
# } @ args:
stdenv.mkDerivation {
  pname = "yts-grammar";
  version = "1.0.0";

  src = ./.;

  nativeBuildInputs = [nodejs tree-sitter];

  CFLAGS = ["-Isrc" "-O2"];
  CXXFLAGS = ["-Isrc" "-O2"];

  stripDebugList = ["parser"];

  configurePhase = ''
    tree-sitter generate
  '';

  # When both scanner.{c,cc} exist, we should not link both since they may be the same but in
  # different languages. Just randomly prefer C++ if that happens.
  buildPhase = ''
    runHook preBuild
    if [[ -e src/scanner.cc ]]; then
      $CXX -fPIC -c src/scanner.cc -o scanner.o $CXXFLAGS
    elif [[ -e src/scanner.c ]]; then
      $CC -fPIC -c src/scanner.c -o scanner.o $CFLAGS
    fi
    $CC -fPIC -c src/parser.c -o parser.o $CFLAGS
    rm -rf parser
    $CXX -shared -o parser *.o
    runHook postBuild
  '';

  installPhase = ''
    runHook preInstall
    mkdir $out
    mv parser $out/
    if [[ -d queries ]]; then
      cp -r queries $out
    fi
    runHook postInstall
  '';
}