#!/bin/bash
# Publish the generated PKGBUILD to the AUR.
#
#   AUR_SSH_KEY   private key registered with aur.archlinux.org (required)
#   $1            path to the generated PKGBUILD
#
# .SRCINFO is generated with makepkg inside an Arch container, because makepkg
# does not exist on the Ubuntu runner image.

set -euo pipefail

PKGBUILD_PATH="${1:?path to PKGBUILD is required}"
: "${AUR_SSH_KEY:?AUR_SSH_KEY is required}"
PKGNAME="${PKGNAME:-jasp-desktop-bin}"

workdir="$(mktemp -d)"
trap 'rm -rf "$workdir"' EXIT

install -m600 /dev/stdin "$workdir/aur_key" <<<"$AUR_SSH_KEY"

export GIT_SSH_COMMAND="ssh -i $workdir/aur_key -o IdentitiesOnly=yes -o StrictHostKeyChecking=accept-new"

echo ":: cloning AUR repo $PKGNAME"
# A package that does not exist yet clones as an empty repo, which is fine.
git clone "ssh://aur@aur.archlinux.org/${PKGNAME}.git" "$workdir/aur"

cp "$PKGBUILD_PATH" "$workdir/aur/PKGBUILD"

echo ":: generating .SRCINFO"
docker run --rm -v "$workdir/aur:/pkg" -w /pkg archlinux:base-devel bash -euc '
  useradd -m builder
  chown -R builder /pkg
  sudo -u builder makepkg --printsrcinfo > /pkg/.SRCINFO
'

cd "$workdir/aur"
git config user.name "${AUR_GIT_NAME:-JASP bin autobuilder}"
git config user.email "${AUR_GIT_EMAIL:-noreply@weircon.dk}"

if git diff --quiet && git diff --cached --quiet && [[ -z "$(git status --porcelain)" ]]; then
  echo ":: AUR already up to date, nothing to push"
  exit 0
fi

version="$(awk -F= '/^pkgver=/{v=$2} /^pkgrel=/{r=$2} END{print v"-"r}' PKGBUILD)"
git add PKGBUILD .SRCINFO
git commit -m "Update to ${version}"
git push origin HEAD:master

echo ":: pushed ${PKGNAME} ${version} to the AUR"