- name: set host name
  set_fact:
    host_name: "{{ inventory_hostname }}"
  when: host_name is not defined


- name: set host tld
  set_fact:
    host_tld: "{{ ((host_branch ~ '.') if host_branch is defined else '') ~ (tld if (host_external_tld | d(false) == true) else int_tld) }}"
  when: host_tld is not defined


- name: set host tls
  set_fact:
    host_tls: yes
  when: host_tls is not defined


- name: set other host variables
  set_fact:
    host_protocol: "{{ 'https' if host_tls else 'http' }}"
    host_metrics: "{{ services.prometheus is defined and (host_metrics | d(true) == true) }}"
    host_mail: "{{ mail_server.mta_hostname is defined and (host_mail | d(true) == true) }}"
    host_backups: "{{ services.backup is defined and (host_backups | d(true) == true) }}"
    host_is_container: "{{ ('containers' in group_names) or (host_is_container | d(false) == true) }}"


- name: set host fqdn and uri
  set_fact:
    host_fqdn: "{{ host_name ~ '.' ~ host_tld }}"
    host_url: "{{ host_protocol }}://{{ host_name ~ '.' ~ host_tld }}"


- name: define ansible_host if it is missing
  set_fact:
    ansible_host: "{{ host_fqdn }}"
  when: ansible_host is not defined


- name: select a cluster node
  include_tasks: tasks/select_node.yml
  when: host_is_container


- name: set hardware information
  set_fact:
    host_hardware: "{{ (
      {
        'cores': 4,
        'cpus': 1,
        'cpuunits': 1024,
        'memory': 128,
        'swap': 128,
        'disk': 0.4
      } | combine(role_hardware | d({})) |
          combine(host_hardware | d({}))) if host_is_container else (host_hardware | d({})) }}"


- name: clamp hardware cores to max node number
  set_fact:
    host_hardware: "{{ host_hardware | combine({'cores': ([host_hardware.cores, hostvars[selected_node]['max_cores'] | d(host_hardware.cores)] | min)}) }}"
  when: "host_is_container and (selected_node is defined) and (hostvars[selected_node]['max_cores'] is defined)"


- block:
    - name: validate database parameters
      fail:
        msg: some database parameters are not defined or invalid
      when: (database.name is not string) or
            (database.user is defined and database.user is not string) or
            (database.pass is defined and database.pass is not string) or
            (database.host is defined and database.host is not string) or
            (database.self_hosted is defined and database.self_hosted is not boolean)

    - name: set database information
      set_fact:
        database_name: "{{ database.name | mandatory }}"
        database_user: "{{ database.user | d(database.name) }}"
        database_pass: "{{ database.pass }}"
        database_host: "{{ '127.0.0.1' if (database.self_hosted | d(false) == true) or (services.db is not defined) else
                           (services.db.address | d(hostvars[services.db.hostname]['ansible_host'])) }}"
        database_hostname: "{{ inventory_hostname if (database.self_hosted | d(false) == true) or (services.db is not defined) else
                               services.db.hostname }}"
        database_self_hosted: "{{ (database.self_hosted | d(false) == true) or (services.db is not defined) }}"
  when: database is mapping