setup-paste.sh

#!/usr/bin/env bash
set -Eeuo pipefail

SOURCE_DIR="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
DROPIN_DIR="/etc/systemd/system/ydotool.service.d"
TEMP_FILE="$(mktemp)"
trap 'rm -f "$TEMP_FILE"' EXIT
TARGET_UID="${1:-$(id -u)}"
TARGET_GID="${2:-$(id -g)}"
TARGET_USER="$(getent passwd "$TARGET_UID" | cut -d: -f1)"
if [[ -z "$TARGET_USER" ]]; then
    echo "Could not resolve user ID $TARGET_UID" >&2
    exit 1
fi
if [[ $EUID -eq 0 ]]; then
    AS_ROOT=()
else
    AS_ROOT=(sudo)
fi

sed -e "s/@USER_ID@/$TARGET_UID/g" -e "s/@GROUP_ID@/$TARGET_GID/g" \
    "$SOURCE_DIR/systemd/ydotool-freeflow.conf" > "$TEMP_FILE"

"${AS_ROOT[@]}" install -d -m 755 "$DROPIN_DIR"
"${AS_ROOT[@]}" install -m 644 "$TEMP_FILE" "$DROPIN_DIR/freeflow.conf"
"${AS_ROOT[@]}" systemctl daemon-reload
"${AS_ROOT[@]}" systemctl enable --now ydotool.service
"${AS_ROOT[@]}" systemctl restart ydotool.service

echo "Automatic Wayland pasting is configured for user $TARGET_USER."