#!/bin/bash

cd "$(dirname "$(readlink -e "$0")")"

if [ "x$1" = 'x--pull' ]; then
  shift
  if ! git pull --ff-only; then
    if ! git pull --rebase \
    && git push; then
      >&2 echo 'cannot push/pull'
      exit 1
    fi
  fi
fi

if [ -n "$(git status --porcelain)" ]; then
  >&2 echo 'git is not clean'
  exit 1
fi

ids=$(
  for pkg in */PKGBUILD; do
    cd "${pkg%/PKGBUILD}"
    ../addPkgbuildPatch add
    {
      printf '%s-build:latest\n' arch artix
      printf 'arch32-%s-build\n' i486 i686 pentium4
    } \
    | shuf \
    | xargs -rn1 docker run --rm -d -v .:/build
    cd ..
  done \
  | tee /dev/stderr
)

check_and_commit_package_updates() {
  [ -z "$(git status --porcelain)" ] && return
  for pkg in $(
    git status --porcelain \
    | sed '
      s@^.. @@
      s@/[^/]\+$@@
    ' \
    | grep -vxFf <(
      docker ps --format '{{.Mounts}}' --no-trunc \
      | sed 's@^.*/@@'
    )
  ); do
    if ! [ -d "$pkg" ]; then
      >&2 echo "$pkg is not a directory"
      continue
    fi
    cd "$pkg"
    ../addPkgbuildPatch del
    [ -n "$(git status --porcelain -- .)" ] \
    && ../commit-package -a \
    && git push
    cd ..
  done
}

while docker ps --no-trunc | grep -wF "${ids}"; do
  sleep 10
  check_and_commit_package_updates
  date
done

check_and_commit_package_updates