#! /usr/bin/env bash

# all executed commands are printed to stdout
set -x

# redirect stdout (and stderr to stdout) to a file
exec 1> /var/log/updater/vaultwarden-updater/vaultwarden-updater-$(date +%F).log 2>&1

# abort on nonzero exitstatus
set -o errexit

# abort on unbound variable
set -o nounset

# don't hide errors within pipes
set -o pipefail

# set your API key here
key=

# set your chat id here
chat_id=

# set your username
username=

function send_message() {
	if [ $# -eq 0 ]
	then
		echo "No argument supplied. Please specify the message to send."
	else
		curl --silent --show-error --fail --request POST https://api.telegram.org/${key}/sendMessage --data chat_id=${chat_id} --data text="${1}" --output /dev/null
	fi
}

function update_vaultwarden {
	rm --recursive --force /tmp/vaultwarden

	# clone the latest release
	su --login ${username} --command "git clone https://github.com/dani-garcia/vaultwarden.git /tmp/vaultwarden"

	# compile the binary
	su --login ${username} --command "/home/${username}/.cargo/bin/cargo build --quiet --features sqlite --release --manifest-path=/tmp/vaultwarden/Cargo.toml"
	systemctl stop vaultwarden.service

	# move the binary to the right place
	mv /tmp/vaultwarden/target/release/vaultwarden /usr/local/bin/vaultwarden

	# set the correct permissions
	chown root:vaultwarden /usr/local/bin/vaultwarden
	chmod 750 /usr/local/bin/vaultwarden
	/usr/sbin/restorecon /usr/local/bin/vaultwarden

	if systemctl start vaultwarden.service
	then
		send_message "[Vaultwarden] - Vaultwarden has just been updated."
	else
		send_message "[Vaultwarden] - Vaultwarden service did not start correctly. Please log in as soon as possible and see what went wrong."
	fi
}

# retrieve local release
local_release=$(/usr/local/bin/vaultwarden --version | awk --field-separator '-' '{print $2}')

# retrieve the latest release
latest_release=$(git ls-remote https://github.com/dani-garcia/vaultwarden.git HEAD | awk '{print substr($1, 1, length($1) - 32)}')

# compare these two versions
if [ ${latest_release} == ${local_release} ]
then
	send_message "[Vaultwarden] - Vaultwarden is up to date."
else
	send_message "[Vaultwarden] - Vaultwarden is not up to date (https://github.com/dani-garcia/vaultwarden/commit/${latest_release})."
	update_vaultwarden
fi