# SPDX-FileCopyrightText: 2025 OrIdow6
# SPDX-License-Identifier: GPL-3.0-or-later

{
  basex,
  autoconf-archive,
  autoreconfHook,
  c-ares,
  coreutils,
  fetchFromGitHub,
  fetchurl,
  flex,
  gettext,
  gnulib,
  gnutls,
  gperf,
  lib,
  libiconv,
  libidn2,
  libintl,
  libpsl,
  libuuid,
  lua51Packages,
  lzip,
  makeBinaryWrapper,
  nukeReferences,
  pcre2,
  perlPackages,
  pkg-config,
  stdenv,
  texinfo,
  writeText,
  zlib,
  zstd,
  brotli,
}:

let
  luaEnv = lua51Packages.lua.withPackages (
    ps: with ps; [
      luasocket
      luafilesystem
      luasec
      luazip
      #crc32
      #md5
      #base64
      cjson
      # luautf8 is a newer version of utf8;
      # the canonical DF uses the latter
      # so I assemble it manually here,
      # but I import the former anyway
      # -- OrIdow6
      (buildLuarocksPackage {
        pname = "utf8";
        version = "0.2.0-1";
        knownRockspec =
          (fetchurl {
            url = "mirror://luarocks/utf8-1.3-0.rockspec";
            sha256 = "sha256-V4otUR+uDIHTIBgfdgmdgMG4Y3knZ+w5ztv7EhbP+us=";
          }).outPath;
        src = fetchFromGitHub {
          owner = "dannote";
          repo = "luautf8";
          rev = "f36cc914ae9015cd3045987abadd83bbcfae98f0";
          sha256 = "sha256-xLWqglAzqcxY+R8GOC+D3uzL2+9ZriEx8Kj41LkI5vU=";
        };

        disabled = luaOlder "5.1";

        meta = {
          homepage = "https://github.com/dannote/luautf8";
          description = "A UTF-8 support module for Lua";
          license = lib.licenses.mit;
        };
      })
      luautf8
      luabitop
      bit32
      luaossl
      zlib
      basex
    ]
  );
in
stdenv.mkDerivation {
  pname = "wget-at";
  version = "1.21.3-at.20260319.01";

  src = fetchFromGitHub {
    owner = "archiveteam";
    repo = "wget-lua";
    rev = "e8cfe0a4ddb8a152971e5d0e22dc3f15f0080109";
    hash = "sha256-zE8hA8RI9q2JBDvzIYWP56uNV7rXwvTOCggdh7I+5Fg=";
  };

  preConfigure = ''
    patchShebangs doc
  '';

  nativeBuildInputs = [
    gettext
    pkg-config
    perlPackages.perl
    lzip
    nukeReferences
    autoreconfHook
    autoconf-archive
    flex
    gperf
    texinfo
    makeBinaryWrapper
  ];
  buildInputs = [
    libidn2
    zlib
    pcre2
    libuuid
    libiconv
    libintl
    luaEnv
    c-ares
    zstd
    brotli
    gnutls
    libpsl
    gnulib
  ];

  # Taken from the wget2.nix in nixpkgs
  autoreconfPhase = ''
    # copy gnulib into build dir and make writable.
    # Otherwise ./bootstrap copies the non-writable files from nix store and fails to modify them
    rmdir gnulib
    cp -r ${gnulib} gnulib
    chmod -R u+w gnulib/{build-aux,lib}

    ./bootstrap --no-git --gnulib-srcdir=gnulib --skip-po
  '';

  strictDeps = true;

  configureFlags = [
    "--with-cares"
  ];

  preBuild = ''
    # avoid runtime references to build-only depends
    make -C src version.c
    nuke-refs src/version.c
  '';

  patches = [
    (writeText "lua-search-for-cmake-package.patch" ''
      	  diff --git a/configure.ac b/configure.ac
      index 8e0a8a9b..63dd1d22 100644
      --- a/configure.ac
      +++ b/configure.ac
      @@ -1053,6 +1053,11 @@ AS_IF(
       
       AS_IF(
         [test "X$enable_luajit" != "Xyes"],
      +  [PKG_CHECK_MODULES([LUA], lua5.1, [
      +    CFLAGS="$LUA_CFLAGS $CFLAGS"
      +    LIBS="$LUA_LIBS $LIBS"
      +    AC_DEFINE([ENABLE_LUA], 1, [Define if Lua is available.])
      +  ],
         [
           AC_CHECK_HEADER(
             lua5.1/lua.h,
      @@ -1072,6 +1077,8 @@ AS_IF(
             AC_MSG_ERROR([lua not found])
           )
         ]
      +  )
      +  ]
       )
       
       AS_IF(
    '')
    # I cannot figure out why it tries to "make" something in this directory *after* the main wget binary is built, which then crashes for reasons I also don't understand. So just ignoring it for now. This also happens if I try to run the vanilla wget build here from Git instead of from the release tarball.
    (writeText "do-not-make-gnulib-po.patch" ''
          diff --git a/Makefile.am b/Makefile.am
      index 5e3f1d18..d9f64bd4 100644
      --- a/Makefile.am
      +++ b/Makefile.am
      @@ -40,7 +40,7 @@ distuninstallcheck_listfiles = find . -type f | \
       ACLOCAL_AMFLAGS = -I m4
       
       # subdirectories in the distribution
      -SUBDIRS = lib src doc po gnulib_po util fuzz tests testenv
      +SUBDIRS = lib src doc po util fuzz tests testenv
       
       EXTRA_DIST = MAILING-LIST \
                    msdos/config.h msdos/Makefile.DJ \

    '')
  ];

  postInstall = ''
    wrapProgram $out/bin/wget \
      --prefix LUA_CPATH ';' "${luaEnv}/lib/lua/${luaEnv.luaversion}/?.so" \
      --prefix LUA_PATH ';' "${luaEnv}/share/lua/${luaEnv.luaversion}/?.lua" \
      --prefix PATH ':' ${lib.makeBinPath [ coreutils ]} # For sleep, but bring in the other programs too in case something uses them
  '';

  enableParallelBuilding = true;

  meta = {
    description = "Tool for retrieving files using HTTP, HTTPS, and FTP AT version";
    homepage = "https://www.gnu.org/software/wget/";
    license = lib.licenses.gpl3Plus;
    mainProgram = "wget";
    platforms = lib.platforms.all;
  };
}