#!/bin/bash

# breaks somewhere after ua_version
#set -e

# https://yandex.cloud/en/docs/monitoring/concepts/data-collection/unified-agent/installation

[[ ! -x `which curl` ]] && echo error: curl executable not found && exit 1
[[ ! -x `which wget` ]] && echo error: wget executable not found && exit 1

# ansible.builtin.script:
#   chdir: /root
# just in case one runs the script outside ansible
cd /root/

# ok=1 changed=0
[[ -x /usr/local/bin/unified_agent ]] && \
	echo ok - unified_agent binary is there - nothing to do && exit 0

# config is done in another play set
# ok=1 changed=0
#[[ -f /etc/yandex/unified_agent/config.yml ]] && \
#	echo ok - config.yml is there - nothing to do && exit 0

# xml listing https://storage.yandexcloud.net/yc-unified-agent/
ua_version=`curl -s https://storage.yandexcloud.net/yc-unified-agent/latest-version`

mkdir -p /usr/local/bin/
cd /usr/local/bin/

echo -n install unified_agent version $ua_version binary ...
#wget -q https://storage.yandexcloud.net/yc-unified-agent/$ua_version/unified_agent && echo done || exit 1
wget -q https://storage.yandexcloud.net/yc-unified-agent/releases/$ua_version/unified_agent && echo done || exit 1
chmod +x unified_agent
cd - >/dev/null

[[ -z `grep ^unified_agent /etc/group` ]] && groupadd -g 1515 unified_agent
[[ -z `grep ^unified_agent /etc/passwd` ]] && useradd -g unified_agent -u 1515 --system -s /sbin/nologin -d /dev/null -M unified_agent

mkdir -p /etc/yandex/unified_agent/

#echo -n check for existing /etc/rc.local ...
#if [[ -f /etc/rc.local ]]; then
#	echo exists
#else
#	echo missing
#	echo -n create rc.local ...
#	# warning \$ escape is in there
#	cat > /etc/rc.local <<EOF && echo done
##!/bin/bash
#
#echo rc.local PATH is \$PATH
#
#EOF
#	chmod +x /etc/rc.local
#fi

# handy symlinks to remind the sysadmin about the agent
#ln -s /etc/rc.local /root/rc.local 2>/dev/null || true
ln -s /etc/yandex/unified_agent/config.yml /root/config.yml 2>/dev/null || true

# ok=1 changed=1
echo changed - all done