#!/bin/sh
set -e
# TODO: Source code line counting.
mirrordir="$HOME/sortix/mirror"
portsdir="$HOME/sortix/ports"
porttixdir="$HOME/src/porttix"
srctixdir="$HOME/src/srctix"
mkdir -p "$mirrordir"
mkdir -p "$portsdir"
cd "$portsdir"
ports=$(ls "$porttixdir" | grep -E '\.porttix\.tar\.xz$' | grep -Eo '^[^.]*')
for port in $ports; do
  cd "$portsdir"
  # TODO: Retain non-free ports somewhere.
  case "$port" in quake|quake-shareware) continue;; esac
  # TODO: Publish imported OpenBSD stuff as Sortix provided tarballs.
  case "$port" in
  cut|ed|video-player|xargs) no_upstream=true;;
  *) no_upstream=false;;
  esac
  if [ -e "$portsdir/$port/$port.info" ]; then
    continue
  fi
  tar -xf "$porttixdir/$port.porttix.tar.xz"
  tar -xf "$srctixdir/$port.srctix.tar.xz" "$port/tixbuildinfo"
  cd "$portsdir/$port"
  nolib=$(echo "$port" | sed -E 's/^lib//')
  build_libraries=$(grep -E '^pkg\.build-libraries=' tixbuildinfo | sed -E 's/^[^=]*=//')
  source_package=$(grep -E '^pkg\.source-package=' tixbuildinfo | sed -E 's/^[^=]*=//')
  rm -f "$port.info.new"
  echo "NAME='$port'" >> "$port.info.new"
  if [ -n "$source_package" ]; then
    rm -f "$port.tar.xz"
    files=
    echo "SOURCE_PACKAGE='$source_package'" >> "$port.info.new"
  else
    files=$(grep -E '^tar_extract ' porttixinfo | sed -E 's/^tar_extract //')
    echo "BUILD_LIBRARIES='$build_libraries'" >> "$port.info.new"
  fi
  if [ "$files" = SDL-1.2.15.tar.gz ]; then
    rm SDL-1.2.15.tar.gz
    wget https://pub.sortix.org/fork/libSDL/sortix-libSDL-1.2.15.tar.xz -O sortix-libSDL-1.2.15.tar.xz
    tar -xf sortix-libSDL-1.2.15.tar.xz
    mv sortix-libSDL-1.2.15 "$port.normalized"
    (cd $srctixdir && git checkout staging)
    tar -xf "$srctixdir/$port.srctix.tar.xz"
    (cd $srctixdir && git checkout -)
    mv "$port" "$port.srctix"
    diff --no-dereference -Naur "$port.normalized" "$port.srctix" > "patch.patch" || true
    tix-execdiff "$port.normalized" "$port.srctix" > "patch.execpatch"
    true > "patch.normalize"
    rm -rf "$port.normalized"
    rm -rf "$port.srctix"
    files="sortix-libSDL-1.2.15.tar.xz"
  fi
  NEED_WRITABLE=
  case "$port" in
  bison|grep|tar|wget)
    echo "rm -rf -- 'doc/stamp-vti'" >> "patch.normalize"
    ;;
  emacs)
    echo "rm -rf -- 'admin/charsets/charsets.stamp'" >> "patch.normalize"
    echo "rm -rf -- 'etc/charsets/JISX2131.map'" >> "patch.normalize"
    ;;
  grub)
    echo "rm -rf -- 'docs/stamp-1'" >> "patch.normalize"
    echo "rm -rf -- 'docs/stamp-vti'" >> "patch.normalize"
    ;;
  libidn)
    echo "rm -rf -- 'doc/Makefile.gdoc'" >> "patch.normalize"
    echo "rm -rf -- 'doc/stamp-vti'" >> "patch.normalize"
    ;;
  texinfo)
    echo "rm -rf -- 'doc/Makefile.gdoc'" >> "patch.normalize"
    echo "rm -rf -- 'doc/stamp-1'" >> "patch.normalize"
    echo "rm -rf -- 'doc/stamp-vti'" >> "patch.normalize"
    ;;
  libglib)
    echo "rm -rf -- 'tests/gobject/testmarshal.h'" >> "patch.normalize"
    echo "rm -rf -- 'tests/gobject/testmarshal.c'" >> "patch.normalize"
    ;;
  python)
    echo "rm -rf -- 'Python/graminit.c'" >> "patch.normalize"
    # This file has to exist and be writeable. Sigh.
    #echo "rm -rf -- 'Include/graminit.h'" >> "patch.normalize"
    NEED_WRITABLE=true
    echo "rm -rf -- 'Python/importlib_external.h'" >> "patch.normalize"
    echo "rm -rf -- 'Python/importlib.h'" >> "patch.normalize"
    ;;
  nyancat)
    sed -Ei 's,^(\+include )(\.\./\.\./build-aux/),\1../\2,' "patch.patch"
    ;;
  esac
  if $no_upstream; then
    mkdir "$port.normalized"
    mkdir "$port.srctix"
    for file in $files; do
      tar -C "$port.srctix" --strip-components=1 -xf "$file"
      rm -f "$file"
    done
    files=
    sed -Ei 's,^(include )(\.\./\.\./build-aux/),\1../\2,' "$port.srctix/Makefile"
    diff --no-dereference -Naur "$port.normalized" "$port.srctix" > "patch.patch" || true
    true > "patch.execpatch"
    true > "patch.normalize"
    rmdir "$port.normalized"
    rm -rf "$port.srctix"
  fi
  # TODO: Extract post-install.sortix from patch.
  file_number=0
  for file in $files; do
    file_number=$(expr $file_number + 1)
    if [ $file_number = 1 ]; then
      file_number_suffix=
    else
      file_number_suffix=_$file_number
    fi
    mirror_file="$file"
    distname=$(echo "$file" | sed -E 's,\.tar.*,,')
    if [ "$port" = vim -a "$file" = vim-8.0.tar.bz2 -a "$(sha256sum -- "$file")" = "acab24b07d9e87a1c1581cf5ecfe0439562ff7e111d0d2dbd274260490cb64e8  $file" ]; then
      version=vim-8.0.002
      mirror_file="$version.tar.bz2"
    fi
    version=$(echo "$distname" | sed -E 's/.*-([0-9]+\..*)/\1/')
    version_major=$(echo "$version" | sed -E 's/([^.]+).*/\1/')
    version_minor=$(echo "$version" | sed -E 's/([^.]+\.){1}([^.]+).*/\2/')
    version_patch=$(echo "$version" | sed -E 's/([^.]+\.){2}([^.]+).*/\2/')
    case "$port" in
    ag) mirrors="https://geoff.greer.fm/ag/releases";;
    binutils|gcc|libstdc++|grub) mirrors="https://pub.sortix.org/sortix/toolchain";;
    bochs) mirrors="https://sourceforge.net/projects/bochs/files/bochs/$version";;
    bzip2) mirrors="https://sourceware.org/pub/bzip2";;
    dash) mirrors="http://gondor.apana.org.au/~herbert/dash/files";;
    e2fsprogs) mirrors="https://kernel.org/pub/linux/kernel/people/tytso/e2fsprogs/v$version";;
    ffmpeg) mirrors="https://ffmpeg.org/releases";;
    flex) mirrors="https://sourceforge.net/projects/flex/files https://github.com/westes/flex/releases/download/v$version";;
    git) mirrors="https://www.kernel.org/pub/software/scm/git";;
    libcairo|libpixman) mirrors="https://www.cairographics.org/releases";;
    libcurl) mirrors="https://curl.se/download";;
    libcurses) mirrors="https://github.com/sabotage-linux/netbsd-curses/releases/download/v$version";;
    libdbus) mirrors="https://dbus.freedesktop.org/releases/dbus";;
    libevent) mirrors="https://github.com/libevent/libevent/releases/download/release-$version";;
    libexpat) mirrors="https://github.com/libexpat/libexpat/releases/download/R_${version_major}_${version_minor}_${version_patch}";;
    libffi) mirrors="https://github.com/libffi/libffi/releases/download/v$version https://sourceware.org/pub/libffi";;
    libfontconfig) mirrors="https://www.freedesktop.org/software/fontconfig/release";;
    libfreetype) mirrors="https://download.savannah.gnu.org/releases/freetype";;
    libglib) mirrors="https://download.gnome.org/sources/glib/$version_major.$version_minor";;
    # TODO: Checksum issues because the upstream file changed.
    # libjpeg) mirrors="https://ijg.org/files";;
    libjpeg) mirrors="https://pub.sortix.org/mirror/libjpeg";;
    libogg|libtheora|libvorbis) mirrors="https://ftp.osuosl.org/pub/xiph/releases/$nolib";;
    libpcre) mirrors="https://sourceforge.net/projects/pcre/files/pcre/$version";;
    libpng) mirrors="https://download.sourceforge.net/libpng";;
    #libSDL) mirrors="https://www.libsdl.org/release";;
    libSDL) mirrors="https://pub.sortix.org/fork/libSDL";;
    libssl) mirrors="https://ftp.openbsd.org/pub/OpenBSD/LibreSSL";;
    libxkbcommon) mirrors="https://xkbcommon.org/download";;
    libxml2) mirrors="ftp://xmlsoft.org/libxml2";;
    libz) mirrors="https://pub.sortix.org/libz/release";;
    lua) mirrors="https://www.lua.org/ftp";;
    mdocml) mirrors="https://mandoc.bsd.lv/snapshots";;
    nasm) mirrors="https://www.nasm.us/pub/nasm/releasebuilds/$version";;
    nyancat) mirrors="https://github.com/klange/nyancat/archive/refs/tags"; mirror_file="$version.tar.gz";;
    perl)
      case "$file" in
      perl-cross-*) mirrors="https://github.com/arsv/perl-cross/releases/download/$version";;
      *) mirrors="https://www.cpan.org/src/5.0";;
      esac;;
    pkg-config) mirrors="https://pkgconfig.freedesktop.org/releases";;
    python) mirrors="https://www.python.org/ftp/python/$version";;
    qemu) mirrors="https://download.qemu.org";;
    vim) mirrors="ftp://ftp.vim.org/pub/vim/unix";;
    xz) mirrors="https://tukaani.org/xz";;
    *) mirrors="https://ftp.gnu.org/gnu/$port https://ftp.gnu.org/gnu/$nolib";;
    esac
    mirrors="$(echo "$mirrors" | tr ' ' '\n' | uniq)"
    found_mirror=
    for mirror in $mirrors; do
      echo trying "$mirror/$mirror_file"
      if wget -q "$mirror/$mirror_file" -O $file.dl; then
       cmp "$file" "$file.dl"
       rm "$file.dl"
       found_mirror="$mirror"
       break
      fi
    done
    if [ -z "$found_mirror" ]; then
     echo "$port failed to find $file"
     exit 1
    else
      sha256sum=$(sha256sum "$file" | grep -Eo '^[^ ]*')
      echo "VERSION${file_number_suffix}='$version'" >> "$port.info.new"
      echo "DISTNAME${file_number_suffix}='$distname'" >> "$port.info.new"
      echo "ARCHIVE${file_number_suffix}='$file'" >> "$port.info.new"
      echo "SHA256SUM${file_number_suffix}='$sha256sum'" >> "$port.info.new"
      echo "UPSTREAM_SITE${file_number_suffix}='$found_mirror'" >> "$port.info.new"
      echo "UPSTREAM_ARCHIVE${file_number_suffix}='$mirror_file'" >> "$port.info.new"
      mkdir -p "$mirrordir/$port"
      mv "$file" "$mirrordir/$port/$file"
      echo "$found_mirror/$mirror_file" > "$mirrordir/$port/$file.url"
      touch -r "$mirrordir/$port/$file" "$mirrordir/$port/$file.url"
      echo "$sha256sum  $file" > "$mirrordir/$port/$file.sha256sum"
      touch -r "$mirrordir/$port/$file" "$mirrordir/$port/$file.sha256sum"
      touch -r "$mirrordir/$port/$file" "$mirrordir/$port"
    fi
  done
  case "$port" in
  ag) cat << \EOF
RELEASE_SEARCH_PAGE="https://geoff.greer.fm/ag/"
EOF
    ;;
  bochs) cat << \EOF
RELEASE_SEARCH_PAGE="https://sourceforge.net/projects/bochs/files/bochs/"
RELEASE_SEARCH_REGEX="([0-9]+\.[0-9]+(\.[0-9]+)*)/"
UPSTREAM_SITE_TEMPLATE="https://sourceforge.net/projects/bochs/files/bochs/%v"
EOF
    ;;
  e2fsprogs) cat << \EOF
RELEASE_SEARCH_PAGE="https://mirrors.edge.kernel.org/pub/linux/kernel/people/tytso/e2fsprogs/"
RELEASE_SEARCH_REGEX="v([0-9]+\.[0-9]+(\.[0-9]+)*)/"
UPSTREAM_SITE_TEMPLATE="https://mirrors.edge.kernel.org/pub/linux/kernel/people/tytso/e2fsprogs/v%v"
EOF
    ;;
  binutils|gcc|grub|libstdc++) cat << \EOF
VERSION_REGEX="([0-9]+\.[0-9]+(\.[0-9]+)*(-rc[0-9]+)?)"
EOF
    ;;
  libcurses) cat << \EOF
UPSTREAM_SITE="https://ftp.barfooze.de/pub/sabotage/tarballs"
EOF
    ;;
  libevent) cat << \EOF
VERSION_REGEX="([0-9]+\\.[0-9]+(\\.[0-9]+)*-stable)"
UPSTREAM_SITE_TEMPLATE="https://github.com/libevent/libevent/releases/download/release-%v"
UPSTREAM_ARCHIVE_TEMPLATE="libevent-%v%e"
EOF
    ;;
  libexpat) cat << \EOF
UPSTREAM_SITE_TEMPLATE="https://github.com/libexpat/libexpat/releases/download/R_%M_%m_%p"
EOF
    ;;
  libjpeg) cat << \EOF
UPSTREAM_SITE="https://www.ijg.org/files"
# TODO: The last letter is optional but sort -V before the first release.
VERSION_REGEX="([0-9]+[a-z])"
RELEASE_REGEX="jpegsrc\.v$VERSION_REGEX"
UPSTREAM_ARCHIVE_TEMPLATE="jpegsrc.v%v%e"
EOF
    ;;
  libgmp) cat << \EOF
# TODO: Remove after upgrading past 6.0.0a.
VERSION_REGEX="([0-9]+\.[0-9]+(\.[0-9]+)*a?)"
EOF
    ;;
  libpcre) cat << \EOF
RELEASE_SEARCH_PAGE="https://sourceforge.net/projects/pcre/files/pcre/"
RELEASE_SEARCH_REGEX="([0-9]+\.[0-9]+(\.[0-9]+)*)/"
UPSTREAM_SITE_TEMPLATE="https://sourceforge.net/projects/pcre/files/pcre/%v"
EOF
    ;;
  libpng) cat << \EOF
RELEASE_SEARCH_PAGE="http://libpng.org/pub/png/libpng.html"
EOF
    ;;
  nasm) cat << \EOF
RELEASE_SEARCH_PAGE="https://www.nasm.us/pub/nasm/releasebuilds/"
RELEASE_SEARCH_REGEX="([0-9]+\.[0-9]+(\.[0-9]+)*)/"
UPSTREAM_SITE_TEMPLATE="https://www.nasm.us/pub/nasm/releasebuilds/%v"
EOF
    ;;
  nyancat) cat << \EOF
RELEASE_SEARCH_PAGE="https://github.com/klange/nyancat/tags"
EOF
    ;;
  python) cat << \EOF
RELEASE_SEARCH_PAGE="https://www.python.org/downloads/source/"
RELEASE_SEARCH_REGEX="Python-([0-9]+\.[0-9]+(\.[0-9]+)*)(\.tar(\.(gz|bz2|xz)))"
UPSTREAM_SITE_TEMPLATE="https://www.python.org/ftp/python/%v"
EOF
    ;;
  esac >> "$port.info.new"
  if [ -n "$NEED_WRITABLE" ]; then
    echo "NEED_WRITABLE=$NEED_WRITABLE" >> "$port.info.new"
  fi
  rm -f "$portsdir/$port/porttixinfo"
  rm -f "$portsdir/$port/tixbuildinfo"
  if [ "$port" != patch ]; then
    mv "$portsdir/$port/patch.patch" "$portsdir/$port/$port.patch"
    mv "$portsdir/$port/patch.execpatch" "$portsdir/$port/$port.execpatch"
    mv "$portsdir/$port/patch.normalize" "$portsdir/$port/$port.normalize"
  fi
  if [ ! -s "$portsdir/$port/$port.execpatch" ]; then
    rm -f "$portsdir/$port/$port.execpatch"
  fi
  if [ ! -s "$portsdir/$port/$port.normalize" ]; then
    rm -f "$portsdir/$port/$port.normalize"
  fi
  mv "$port.info.new" "$port.info"
done