---
# file: roles/base/tasks/core_hostname.yml

- name: Ensure system hostname
  hostname:
    name: "{{ base_core_hostname }}"
  when: base_core_hostname != "" and base_core_hostname != ansible_facts['nodename']
  register: hostname_change
  notify: Reboot Host

- block:
  - name: Ensure hostname is set in /etc/hosts
    lineinfile:
      dest: /etc/hosts
      regexp: '^127\.0\.0\.1[ \t]+localhost'
      line: '127.0.0.1 localhost {{ base_core_hostname }}'
      state: present

  - name: Ensure hostname is set in /etc/hosts
    lineinfile:
      dest: /etc/hosts
      regexp: '^127\.0\.1\.1[ \t]'
      line: '127.0.1.1 {{ base_core_hostname }}'
      state: present

  - name: Remove ssh certs
    file:
      state: absent
      path: "{{item}}"
    loop:
    - /etc/ssh/ssh_host_rsa_key
    - /etc/ssh/ssh_host_dsa_key
    - /etc/ssh/ssh_host_ecdsa_key
    - /etc/ssh/ssh_host_ed25519_key

  - name: Generate /etc/ssh/ RSA host key
    command : ssh-keygen -q -t rsa -f /etc/ssh/ssh_host_rsa_key -C "" -N ""
    args:
      creates: /etc/ssh/ssh_host_rsa_key
  
  - name: Generate /etc/ssh/ DSA host key
    command : ssh-keygen -q -t dsa -f /etc/ssh/ssh_host_dsa_key -C "" -N ""
    args:
      creates: /etc/ssh/ssh_host_dsa_key
  
  - name: Generate /etc/ssh/ ECDSA host key
    command : ssh-keygen -q -t ecdsa -f /etc/ssh/ssh_host_ecdsa_key -C "" -N ""
    args:
      creates: /etc/ssh/ssh_host_ecdsa_key

  - name: Generate /etc/ssh/ ED25519 host key
    command : ssh-keygen -q -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -C "" -N ""
    args:
      creates: /etc/ssh/ssh_host_ed25519_key
  when: hostname_change.changed

- name: Flush handlers
  meta: flush_handlers