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Ask user for old service file (#2966)

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Co-authored-by: Jahn-Hendrik Krämer <admin@herrpitillo.de>
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Jahn-Hendrik 2022-04-04 22:06:56 +02:00 • committed by GitHub
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71
packaging/scripts/postinstall.sh
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@ -1,6 +1,75 @@
#!/bin/sh
set -e
USER_CHOICE_CONFIG="/etc/evcc-userchoices.sh"
ETC_SERVICE="/etc/systemd/system/evcc.service"
USR_LOCAL_BIN="/usr/local/bin/evcc"
# Usage: askUserKeepFile <file>
# Return: 1 = keep, 0 = delete
askUserKeepFile() {
while true; do
echo "Shall '$1' be deleted? [Y/n]: "
read answer
case "$answer" in
n*|N*)
echo "Ok. We will keep that file. Keep in mind that you may need to alter it if any changes are done upstream. Your answer is saved for the future."
return 1
;;
y*|Y*|"")
echo "The file will be deleted."
return 0
;;
*)
;;
esac
done
}
if [ "$1" = "configure" ]; then
KEEP_ETC_SERVICE=0
KEEP_USR_LOCAL_BIN=0
# If the user once said that he wants to keep the files
# this choice file will include that information
# and the user will no longer be asked if he wants to keep it
if [ -f "$USER_CHOICE_CONFIG" ]; then
. "$USER_CHOICE_CONFIG"
fi
# If the user previously decided that he doesn't want to keep
# the files or if it's the first time, aks whether he want's to
# keep the file
if [ -f "$ETC_SERVICE" ] && [ "$KEEP_ETC_SERVICE" -eq 0 ]; then
echo "An alternate service file was detected under '$ETC_SERVICE'."
echo "This is probably due to a previous manual installation."
echo "You probably want to delete this file now. Your evcc configuration stays untouched!"
askUserKeepFile "$ETC_SERVICE" || KEEP_ETC_SERVICE=$?
fi
if [ -f "$USR_LOCAL_BIN" ] && [ "$KEEP_USR_LOCAL_BIN" -eq 0 ]; then
echo "An alternate evcc binary was detected under '$USR_LOCAL_BIN'."
echo "This is probably due to a previous manual installation."
echo "You probably want to delete this file now. Your evcc configuration stays untouched!"
askUserKeepFile "$USR_LOCAL_BIN" || KEEP_USR_LOCAL_BIN=$?
fi
# Save the user decision
cat > "$USER_CHOICE_CONFIG" <<EOF
#!/bin/sh
KEEP_ETC_SERVICE=$KEEP_ETC_SERVICE
KEEP_USR_LOCAL_BIN=$KEEP_USR_LOCAL_BIN
EOF
# Execute the user decision
if [ -f "$ETC_SERVICE" ] && [ "$KEEP_ETC_SERVICE" -eq 0 ]; then
echo "Deleting old service file '$ETC_SERVICE'"
rm -v "$ETC_SERVICE"
fi
if [ -f "$USR_LOCAL_BIN" ] && [ "$KEEP_USR_LOCAL_BIN" -eq 0 ]; then
echo "Deleting old evcc binary '$USR_LOCAL_BIN'"
rm -v "$USR_LOCAL_BIN"
fi
fi
if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-deconfigure" ] || [ "$1" = "abort-remove" ] ; then
# This will only remove masks created by d-s-h on package removal.
deb-systemd-helper unmask evcc.service >/dev/null || true
@ -25,4 +94,4 @@ if [ "$1" = "configure" ] || [ "$1" = "abort-upgrade" ] || [ "$1" = "abort-decon
deb-systemd-invoke start evcc.service >/dev/null || true
fi
fi
fi
fi