# Use logrotate to manage the logfile
#
# usage: ynh_use_logrotate [logfile]
# | arg: logfile - absolute path of logfile
#
# If no argument provided, a standard directory will be use. /var/log/${app}
# You can provide a path with the directory only or with the logfile.
# /parentdir/logdir/
# /parentdir/logdir/logfile.log
#
# It's possible to use this helper several times, each config will added to same logrotate config file.
ynh_use_logrotate () {
	if [ "$#" -gt 0 ]; then
		if [ "$(echo ${1##*.})" == "log" ]; then	# Keep only the extension to check if it's a logfile
			logfile=$1	# In this case, focus logrotate on the logfile
		else
			logfile=$1/.log	# Else, uses the directory and all logfile into it.
		fi
	else
		logfile="/var/log/${app}/*.log" # Without argument, use a defaut directory in /var/log
	fi
	cat > ./${app}-logrotate << EOF	# Build a config file for logrotate
$logfile {
		# Rotate if the logfile exceeds 100Mo
	size 100M
		# Keep 12 old log maximum
	rotate 12
		# Compress the logs with gzip
	compress
		# Compress the log at the next cycle. So keep always 2 non compressed logs
	delaycompress
		# Copy and truncate the log to allow to continue write on it. Instead of move the log.
	copytruncate
		# Do not do an error if the log is missing
	missingok
		# Not rotate if the log is empty
	notifempty
		# Keep old logs in the same dir
	noolddir
}
EOF
	sudo mkdir -p $(dirname "$logfile")	# Create the log directory, if not exist
	cat ${app}-logrotate | sudo tee -a /etc/logrotate.d/$app > /dev/null	# Append this config to the others for this app. If a config file already exist
}

# Remove the app's logrotate config.
#
# usage: ynh_remove_logrotate
ynh_remove_logrotate () {
	if [ -e "/etc/logrotate.d/$app" ]; then
		sudo rm "/etc/logrotate.d/$app"
	fi
}