---
- hosts: {{ instance_name }}
  gather_facts: False
  connection: ssh
  user: ubuntu
  sudo: yes
  vars:
    server_network: {{ server_network }}
    is_persistent: {{ is_persistent }}
    vpn_subnet: {{ vpn_subnet }}
    clients_can_see_each_other: {{ clients_can_see_each_other }}
    instance_id: {{ instance_id }}

  tasks:
  - name: install openvpn
    apt: name=openvpn state=present update_cache=yes

  - name: stop openvpn
    shell: kill -9 $(cat /opt/openvpn/server{{ instance_id }}/pid) || true

  - name: make sure /opt/openvpn exists
    file: path=/opt/openvpn state=directory

  - name: make sure directory for this server exists
    file: path=/opt/openvpn/server{{ instance_id }} state=directory

  - name: get server key
    copy: src=/opt/openvpn/easyrsa3/pki/private/server{{ instance_id }}.key dest=/opt/openvpn/server{{ instance_id }}/server.key

  - name: get server crt
    copy: src=/opt/openvpn/easyrsa3/pki/issued/server{{ instance_id }}.crt dest=/opt/openvpn/server{{ instance_id }}/server.crt

  - name: get ca crt
    copy: src=/opt/openvpn/easyrsa3/pki/ca.crt dest=/opt/openvpn/ca.crt

  - name: get dh
    copy: src=/opt/openvpn/easyrsa3/pki/dh.pem dest=/opt/openvpn/dh.pem

  - name: erase config
    shell: rm -f /opt/openvpn/server{{ instance_id }}/server.conf

  - name: erase auth script
    shell: rm -f /opt/openvpn/server{{ instance_id }}/auth.sh

  - name: write auth script
    shell: printf "%b" "#!/bin/bash\nexit 0" > /opt/openvpn/server{{ instance_id }}/auth.sh

  - name: make auth script executable
    shell: chmod 777 /opt/openvpn/server{{ instance_id }}/auth.sh

  - name: write base config
    shell:
       |
       printf "script-security 3 system
       port 1194
       proto udp
       dev tun
       ca /opt/openvpn/ca.crt
       cert /opt/openvpn/server{{ instance_id }}/server.crt
       key /opt/openvpn/server{{ instance_id }}/server.key
       dh /opt/openvpn/dh.pem
       server {{ server_network }} {{ vpn_subnet }}
       ifconfig-pool-persist /opt/openvpn/server{{ instance_id }}/ipp.txt
       comp-lzo
       status /opt/openvpn/server{{ instance_id }}/openvpn-status.log
       verb 3
       auth-user-pass-verify /opt/openvpn/server{{ instance_id }}/auth.sh via-file
       client-cert-not-required
       username-as-common-name
       " > /opt/openvpn/server{{ instance_id }}/server.conf

  - name: write persistent config
    shell:
      |
      printf "keepalive 10 60
      persist-tun
      persist-key
      " >> /opt/openvpn/server{{ instance_id }}/server.conf
    when: {{ is_persistent }}

  - name: write client-to-client config
    shell: printf "client-to-client\n" >> /opt/openvpn/server{{ instance_id }}/server.conf
    when: {{ clients_can_see_each_other }}

  - name: start openvpn
    shell: openvpn --writepid /opt/openvpn/server{{ instance_id }}/pid /opt/openvpn/server{{ instance_id }}/server.conf &