feat(aur): add subcommand to drop a package from the repos to the AUR

Add an aur command to interact with the Arch User Repository including
the drop-from-repo subommand which allows to drop packages from the
official repository to the Arch User Repository in one go.

Related to #143

Component: pkgctl aur drop-from-repo
Co-authored-by: Levente Polyak <anthraxx@archlinux.org>
Signed-off-by: Christian Heusel <christian@heusel.eu>

4 files changed, 241 insertions, 0 deletions

diff --git a/src/lib/aur.sh b/src/lib/aur.sh
new file mode 100644
index 0000000..24cbb62
--- /dev/null
+++ b/src/lib/aur.sh
@@ -0,0 +1,65 @@
+#!/hint/bash
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+[[ -z ${DEVTOOLS_INCLUDE_AUR_SH:-} ]] || return 0
+DEVTOOLS_INCLUDE_AUR_SH=1
+
+_DEVTOOLS_LIBRARY_DIR=${_DEVTOOLS_LIBRARY_DIR:-@pkgdatadir@}
+
+set -eo pipefail
+
+
+pkgctl_aur_usage() {
+	local -r COMMAND=${_DEVTOOLS_COMMAND:-${BASH_SOURCE[0]##*/}}
+	cat <<- _EOF_
+		Usage: ${COMMAND} [COMMAND] [OPTIONS]
+
+		Interact with the Arch User Repository (AUR).
+
+		Provides a suite of tools designed for managing and interacting with the Arch
+		User Repository (AUR). It simplifies various tasks related to AUR, including
+		importing repositories, managing packages, and transitioning packages between
+		the official repositories and the AUR.
+
+		COMMANDS
+		    drop-from-repo    Drop a package from the official repository to the AUR
+
+		OPTIONS
+		    -h, --help        Show this help text
+
+		EXAMPLES
+		    $ ${COMMAND} drop-from-repo libfoo
+_EOF_
+}
+
+pkgctl_aur() {
+	if (( $# < 1 )); then
+		pkgctl_aur_usage
+		exit 0
+	fi
+
+	# option checking
+	while (( $# )); do
+		case $1 in
+			-h|--help)
+				pkgctl_aur_usage
+				exit 0
+				;;
+			drop-from-repo)
+				_DEVTOOLS_COMMAND+=" $1"
+				shift
+				# shellcheck source=src/lib/aur/drop-from-repo.sh
+				source "${_DEVTOOLS_LIBRARY_DIR}"/lib/aur/drop-from-repo.sh
+				pkgctl_aur_drop_from_repo "$@"
+				exit 0
+				;;
+			-*)
+				die "invalid argument: %s" "$1"
+				;;
+			*)
+				die "invalid command: %s" "$1"
+				;;
+		esac
+	done
+}
diff --git a/src/lib/aur/drop-from-repo.sh b/src/lib/aur/drop-from-repo.sh
new file mode 100644
index 0000000..d70b559
--- /dev/null
+++ b/src/lib/aur/drop-from-repo.sh
@@ -0,0 +1,166 @@
+#!/bin/bash
+#
+# SPDX-License-Identifier: GPL-3.0-or-later
+
+[[ -z ${DEVTOOLS_INCLUDE_AUR_DROP_FROM_REPO_SH:-} ]] || return 0
+DEVTOOLS_INCLUDE_AUR_DROP_FROM_REPO_SH=1
+
+_DEVTOOLS_LIBRARY_DIR=${_DEVTOOLS_LIBRARY_DIR:-@pkgdatadir@}
+
+# shellcheck source=src/lib/common.sh
+source "${_DEVTOOLS_LIBRARY_DIR}"/lib/common.sh
+# shellcheck source=src/lib/db/remove.sh
+source "${_DEVTOOLS_LIBRARY_DIR}"/lib/db/remove.sh
+# shellcheck source=src//lib/util/pacman.sh
+source "${_DEVTOOLS_LIBRARY_DIR}"/lib/util/pacman.sh
+
+source /usr/share/makepkg/util/message.sh
+
+set -eo pipefail
+
+
+pkgctl_aur_drop_from_repo_usage() {
+	local -r COMMAND=${_DEVTOOLS_COMMAND:-${BASH_SOURCE[0]##*/}}
+	cat <<- _EOF_
+		Usage: ${COMMAND} [OPTIONS] [PATH]...
+
+		Drops a specified package from the official repositories to the Arch
+		User Repository.
+
+		This command requires a local Git clone of the package repository. It
+		reconfigures the repository for AUR compatibility and pushes it to the
+		AUR. Afterwards, the package is removed from the official repository.
+
+		By default, the package is automatically disowned in the AUR.
+
+		OPTIONS
+		    --no-disown    Do not disown the package on the AUR
+		    -f, --force    Force push to the AUR overwriting the remote repository
+		    -h, --help     Show this help text
+
+		EXAMPLES
+		    $ ${COMMAND} foo
+		    $ ${COMMAND} --no-disown --force
+_EOF_
+}
+
+pkgctl_aur_drop_from_repo() {
+	# options
+	local paths=()
+	local DISOWN=1
+	local FORCE=0
+
+	# variables
+	local path realpath pkgbase pkgrepo remote_url
+
+	while (( $# )); do
+		case $1 in
+			-h|--help)
+				pkgctl_aur_drop_from_repo_usage
+				exit 0
+				;;
+			--no-disown)
+				DISOWN=0
+				shift
+				;;
+			-f|--force)
+				FORCE=1
+				shift
+				;;
+			--)
+				shift
+				break
+				;;
+			-*)
+				die "Invalid argument: %s" "$1"
+				;;
+			*)
+				paths=("$@")
+				break
+				;;
+		esac
+	done
+
+	# check if invoked without any path from within a packaging repo
+	if (( ${#paths[@]} == 0 )); then
+		if [[ -f PKGBUILD ]]; then
+			paths=(".")
+		else
+			pkgctl_aur_drop_from_repo_usage
+			exit 1
+		fi
+	fi
+
+	for path in "${paths[@]}"; do
+		if ! realpath=$(realpath -e "${path}"); then
+			die "No such directory: ${path}"
+		fi
+
+		pkgbase=$(basename "${realpath}")
+		pkgbase=${pkgbase%.git}
+
+		if [[ ! -d "${path}/.git" ]]; then
+			die "Not a Git repository: ${path}"
+		fi
+
+		pushd "${path}" >/dev/null
+
+		if [[ ! -f PKGBUILD ]]; then
+			die 'PKGBUILD not found in %s' "${path}"
+		fi
+
+		msg "Dropping ${pkgbase} to the AUR"
+
+		remote_url="${AUR_URL_SSH}:${pkgbase}.git"
+		if ! git remote add origin "${remote_url}" &>/dev/null; then
+			git remote set-url origin "${remote_url}"
+		fi
+
+		# move the main branch to master
+		if [[ $(git symbolic-ref --quiet --short HEAD) == main ]]; then
+			git branch --move master
+			git config branch.master.merge refs/heads/master
+			git remote set-head origin master
+		fi
+
+		# auto generate .SRCINFO if not already present
+		if [[ -z "$(git ls-tree -r HEAD --name-only .SRCINFO)" ]]; then
+			stat_busy 'Generating .SRCINFO'
+			makepkg --printsrcinfo > .SRCINFO
+			stat_done
+
+			git add --force -- .SRCINFO
+			git commit --quiet --message "Adding .SRCINFO" -- .SRCINFO
+		fi
+
+		msg "Pushing ${pkgbase} to the AUR"
+		if (( FORCE )); then
+			AUR_OVERWRITE=1 \
+				GIT_SSH_COMMAND="ssh -o SendEnv=AUR_OVERWRITE" \
+				git push --force origin master
+		else
+			git push origin master
+		fi
+
+		if (( DISOWN )); then
+			msg "Disowning ${pkgbase} on the AUR"
+			# shellcheck disable=SC2029
+			ssh "${AUR_URL_SSH}" disown "${pkgbase}"
+		fi
+
+		# auto-detection of the repo to remove from
+		if ! pkgrepo=$(get_pacman_repo_from_pkgbuild PKGBUILD); then
+			die 'Failed to get pacman repo'
+		fi
+
+		msg "Deleting ${pkgbase} from the official repository"
+		if [[ -z "${pkgrepo}" ]]; then
+			warning 'Did not find %s in any repository, please delete manually' "${pkgbase}"
+		else
+			msg2 "  repo: ${pkgrepo}"
+			pkgctl_db_remove "${pkgrepo}" "${pkgbase}"
+		fi
+
+		popd >/dev/null
+	done
+}
diff --git a/src/lib/common.sh b/src/lib/common.sh
index 17b91bc..a93e906 100644
--- a/src/lib/common.sh
+++ b/src/lib/common.sh
@@ -29,6 +29,7 @@ export GIT_PACKAGING_URL_SSH="git@${GITLAB_HOST}:${GIT_PACKAGING_NAMESPACE}"
 export GIT_PACKAGING_URL_HTTPS="https://${GITLAB_HOST}/${GIT_PACKAGING_NAMESPACE}"
 export PACKAGING_REPO_RELEASE_HOST=repos.archlinux.org
 export PKGBASE_MAINTAINER_URL=https://archlinux.org/packages/pkgbase-maintainer
+export AUR_URL_SSH=aur@aur.archlinux.org
 
 # check if messages are to be printed using color
 if [[ -t 2 && "$TERM" != dumb ]] || [[ ${DEVTOOLS_COLOR} == always ]]; then
diff --git a/src/pkgctl.in b/src/pkgctl.in
index 10a2348..070e0cd 100644
--- a/src/pkgctl.in
+++ b/src/pkgctl.in
@@ -19,6 +19,7 @@ usage() {
 		Unified command-line frontend for devtools.
 
 		COMMANDS
+		    aur     Interact with the Arch User Repository
 		    auth    Authenticate with services like GitLab
 		    build   Build packages inside a clean chroot
 		    db      Pacman database modification for package update, move etc
@@ -51,6 +52,14 @@ while (( $# )); do
 			usage
 			exit 0
 			;;
+		aur)
+			_DEVTOOLS_COMMAND+=" $1"
+			shift
+			# shellcheck source=src/lib/aur.sh
+			source "${_DEVTOOLS_LIBRARY_DIR}"/lib/aur.sh
+			pkgctl_aur "$@"
+			exit 0
+			;;
 		build)
 			_DEVTOOLS_COMMAND+=" $1"
 			shift