---

- name: Check if turnserver is installed
  stat: path=/lib/systemd/system/turnserver.service
  register: turn_turnserver
  tags: turn

  # Migrate from the turnserver package/role
- when: turn_turnserver.stat.exists
  block:
    - name: Stop and disable turnserver
      service: name=turnserver state=stopped enabled=False

    - name: Remove turnserver package
      yum: name=turnserver state=absent

    - name: Remove turnserver dehydrated hook
      file: path=/etc/dehydrated/hooks_deploy_cert.d/20turnserver.sh state=absent
  tags: turn

- name: Install Coturn
  yum: name=coturn state=present
  register: turn_installed
  tags: turn

- name: Create tmpfiles
  command: systemd-tmpfiles --create
  when: turn_installed.changed
  tags: turn

- name: Deploy main configuration
  template: src=turnserver.conf.j2 dest=/etc/coturn/turnserver.conf group=coturn mode=640
  notify: restart coturn
  tags: turn

- name: Create the ssl dir
  file: path=/etc/coturn/ssl state=directory group=coturn mode=750
  tags: turn

  # Create a self signed cert. This is needed even if a cert is later obtained with dehydrated as
  # turnserver must be started before that
- import_tasks: ../includes/create_selfsigned_cert.yml
  vars:
    - cert_path: /etc/coturn/ssl/cert.pem
    - cert_key_path: /etc/coturn/ssl/key.pem
    - cert_user: coturn
  tags: turn

- name: Deploy dehydrated hook
  template: src=dehydrated_deploy_hook.j2 dest=/etc/dehydrated/hooks_deploy_cert.d/20coturn.sh mode=755
  tags: turn

- name: Remove turnserver rules
  iptables_raw:
    name: turnserver_ports
    state: absent
  when: iptables_manage | default(True)
  tags: turn,firewall

- name: Handle coturn ports
  iptables_raw:
    name: coturn_ports
    state: "{{ (turn_src_ip | length > 0) | ternary('present','absent') }}"
    rules: |
      -A INPUT -m state --state NEW -p tcp -m multiport --dports {{ [turn_port,turn_tls_port] | join(',') }} -s {{ turn_src_ip | join(',') }} -j ACCEPT
      -A INPUT -p udp -m multiport --dports {{ [turn_port,turn_tls_port] | join(',') }} -s {{ turn_src_ip | join(',') }} -j ACCEPT
      -A INPUT -p tcp --dport 49152:65535 -s {{ turn_src_ip | join(',') }} -j ACCEPT
      -A INPUT -p udp --dport 49152:65535 -s {{ turn_src_ip | join(',') }} -j ACCEPT
  when: iptables_manage | default(True)
  tags: turn,firewall

- name: Create systemd unit snippet dir
  file: path=/etc/systemd/system/coturn.service.d state=directory
  tags: turn

- name: Customize systemd unit
  copy:
    content: |
      [Service]
      # Allow binding on privileged ports
      CapabilityBoundingSet=CAP_NET_BIND_SERVICE
      AmbientCapabilities=CAP_NET_BIND_SERVICE
    dest: /etc/systemd/system/coturn.service.d/99-ansible.conf
  register: turn_unit
  tags: turn

- name: Reload systemd
  systemd: daemon_reload=True
  when: turn_unit.changed
  tags: turn

- name: Start and enable the service
  service: name=coturn state=started enabled=True
  tags: turn

- name: Add long term users
  command: turnadmin --add --user={{ item.name }} --password={{ item.pass | quote }} --realm={{ turn_realm | default(ansible_domain) }}
  loop: "{{ turn_lt_users }}"
  tags: turn

- name: Remove users with unknown realm
  shell: |
    for U in $(turnadmin --list | grep -vP '^0:\s+:\s+(log file opened|SQLite connection)'); do
      user=$(echo $U | cut -d'[' -f1)
      realm=$(echo $U | perl -pe 's/.*\[(.*)\]/$1/')
      [ "$realm" == "{{ turn_realm | default(ansible_domain) }}" ] || turnadmin --delete --user=$user --realm=$realm
    done
  changed_when: False
  tags: turn

- name: List long term users
  shell: turnadmin --list | grep -vP '^0:\s+:\s+(log file opened|SQLite connection)' | cut -d'[' -f1
  register: turn_lt_existing_users
  changed_when: False
  tags: turn

- name: Remove unmanaged long term users
  command: turnadmin --delete --user={{ item }} --realm={{ turn_realm | default(ansible_domain) }}
  when: item not in turn_lt_users | map(attribute='name') | list
  loop: "{{ turn_lt_existing_users.stdout_lines }}"
  tags: turn