#!/bin/sh -e

# clean self and do not pass through any environment
# except path/home, because it doesn't matter too much for this specific purpose,
# and home is required
# and a few that are useful to keep some cache paths
if [ -z "$_CLEAN" ]; then
   exec env -i \
      _CLEAN=1 \
      HOME="$HOME" \
      PATH="$PATH" \
      USER="$USER" \
      TERM="xterm" \
      ${CARGO_HOME:+CARGO_HOME="$CARGO_HOME"} \
      ${CBUILD:+CBUILD="$CBUILD"} \
      ${GNUPGHOME:+GNUPGHOME="$GNUPGHOME"} \
      ${GOCACHE:+GOCACHE="$GOCACHE"} \
      ${GOMODCACHE:+GOMODCACHE="$GOMODCACHE"} \
      ${GOPATH:+GOPATH="$GOPATH"} \
      ${GOTMPDIR:+GOTMPDIR="$GOTMPDIR"} \
      ${CCACHE_DIR:+CCACHE_DIR="$CCACHE_DIR"} \
      ${SCCACHE_CACHE_SIZE:+SCCACHE_CACHE_SIZE="$SCCACHE_CACHE_SIZE"} \
      ${SSH_AUTH_SOCK:+SSH_AUTH_SOCK="$SSH_AUTH_SOCK"} \
      ${XDG_CACHE_HOME:+XDG_CACHE_HOME="$XDG_CACHE_HOME"} \
      ${XDG_CONFIG_HOME:+XDG_CONFIG_HOME="$XDG_CONFIG_HOME"} \
      ${DISTFILES_MIRROR:+DISTFILES_MIRROR="$DISTFILES_MIRROR"} \
      ${mirror:+mirror="$mirror"} \
      "$0" "$@"
fi

while getopts "j:fhmnsxN" opt; do
   case "$opt" in
   'j')
      jobs="$OPTARG"
      export JOBS="$jobs"
      export MAKEFLAGS="-j$jobs"
      export SAMUFLAGS="-j$jobs"
      export CARGO_BUILD_JOBS="$jobs"
      ;;
   'f')
      # also run checksum/checkapk
      full=1
      ;;
   'h')
      fsynchack=1
      ;;
   'm')
      # don't set LD_PRELOAD for another alloc
      # since i set this normally, this unexports it.
      # XXX: funnily, any extra alloc breaks gjs-based testsuites (why?)
      nomemhack=1
      unset LD_PRELOAD
      ;;
   'n')
      nonice=1
      ;;
   's')
      nosccache=1
      ;;
   'x')
      # skip checks
      export ABUILD_BOOTSTRAP=1
      ;;
   'N')
      # skip extras
      nosha512sum=1
      ;;
   *)
      echo "invalid argument passed"
      exit 1
      ;;
   esac
done

shift "$((OPTIND - 1))"

# loop again to check if rootbld
for arg; do
   if eltest "$arg" =~ "rootbld"; then
      rootbld=1
   fi
done

# always prevent installing all the firmware for no reason
extra="linux-firmware-none"

if [ -n "$rootbld" ]; then
   if [ -n "$fsynchack" ]; then
      # in rootbld, should be safe to skip fsync
      extra="$extra libeatmydata"
      export LD_PRELOAD="$LD_PRELOAD /usr/lib/libeatmydata.so"
   fi
else
   if [ -z "$nosccache" ]; then
      # not rootbld use sccache
      # TODO: maybe we can mount something into rootbld without patches
      extra="$extra sccache"
      export RUSTC_WRAPPER=sccache
   fi
fi

if [ -z "$nomemhack" ]; then
   extra="$extra scudo-malloc"
   export LD_PRELOAD="$LD_PRELOAD /usr/lib/libscudo.so"
fi

if [ -z "$nonice" ]; then
   # max bg idle
   # note that there is no nice here,
   # but nice is mostly useless with modern linux process groups.
   # (and this is in its' own by virtue of a new terminal)
   nicewrap="chrt -i 0 ionice -c 2 -n 7"
fi

root="$(git rev-parse --show-toplevel)"

if [ -n "$root" ]; then
   # abuild cannot detect the root dir to get .rootbld-repositories
   # to work, unless the dir has aports in git remotes or is ~/aports
   # ...
   export APORTSDIR="$root"
fi

export EXTRADEPENDS_BUILD="$extra pigz xz"

if [ -z "$nosha512sum" ]; then
   export EXTRADEPENDS_BUILD="$EXTRADEPENDS_BUILD coreutils-sha512sum"
fi

# ignore user gitconfig always
export GIT_CONFIG_GLOBAL="$(mktemp)"

trap 'rm -f "$GIT_CONFIG_GLOBAL"' EXIT INT TERM HUP

if [ -n "$full" ]; then
   abuild checksum
fi

$nicewrap abuild -fr "$@"

if [ -n "$full" ]; then
   checkapk
   abuild sanitycheck
   apkbuild-shellcheck || true
   apkbuild-anitya || true
fi