#
#   Day 3 - Generate Inventory (Phase 2: tachyon user on obscure port)
#   Requires linode-cli to be installed (`pip3 install linode-cli`)
#   The hosts file generated requires ansible (`pip3 install ansible`)
#   This will crush any ansible.cfg and hosts files in the current directory.

# Default ansible group and linode label
if [ -z "$CATEGORY" ]
then
    CATEGORY="UpskillChallengeNode"
fi

if [ -z "$ADMINUSER" ]
then
    ADMINUSER="tachyon"
fi

if [ -z "$NODESSHPORT" ]
then
    NODESSHPORT=22022
fi

# fetch IP address from Linode. Assumes one device (TODO: handle a swarm of them).
NODEIP=$(linode-cli linodes list --format 'ipv4' --label "$CATEGORY" --text | tail -n 1)

# create or clobber hosts file
cat > hosts << EOF
[$CATEGORY]
$NODEIP:$NODESSHPORT   ansible_user=$ADMINUSER 

[$CATEGORY:vars]
ansible_ssh_user=$ADMINUSER
ansible_become=yes
ansible_become_user=root
ansible_become_method=sudo
EOF

# create or clobber hosts file
cat > ansible.cfg << EOF
[defaults]
inventory = $(pwd)/hosts

[ssh_connection]
ssh_args = "-o ControlMaster=auto -o ControlPersist=60s -o PreferredAuthentications=publickey"
pipelining = true
EOF

ansible "$CATEGORY" -m ping