---
- name: Ensure state is valid
  ansible.builtin.fail:
    msg: >-2
      Invalid state '{{ alertmanager_state }}'! Valid
      states are {{ alertmanager_states | join(', ') }}.
  when: alertmanager_state not in alertmanager_states

- name: Ensure deployment method is valid
  ansible.builtin.fail:
    msg: >-2
      Invalid deployment method {{ alertmanager_deployment_method }}!
      Supported deployment methods are {{ alertmanager_deployment_methods | join(', ') }}.
  when: alertmanager_deployment_method not in alertmanager_deployment_methods

- name: Ensure alertmanager user '{{ alertmanager_user }}' is {{ alertmanager_state }}
  ansible.builtin.user:
    name: "{{ alertmanager_user }}"
    state: "{{ alertmanager_state }}"
    system: true
  register: alertmanager_user_info

- name: Ensure mounts are {{ alertmanager_state }}
  ansible.builtin.file:
    dest: "{{ item.path }}"
    state: "{{ (alertmanager_state == 'present') | ternary('directory', 'absent') }}"
    owner: "{{ item.owner | default(alertmanager_user_info.uid | default(alertmanager_user)) }}"
    group: "{{ item.owner | default(alertmanager_user_info.group | default(alertmanager_user)) }}"
    mode: "{{ item.mode | default('0755') }}"
  loop:
    - path: "{{ alertmanager_base_path }}"
    - path: "{{ alertmanager_data_path }}"
    - path: "{{ alertmanager_config_path }}"

- name: Ensure config file is templated
  ansible.builtin.copy:
    dest: "{{ alertmanager_config_file }}"
    content: "{{ alertmanager_config | to_nice_yaml }}"
    owner: "{{ alertmanager_user_info.uid | default(alertmanager_user) }}"
    group: "{{ alertmanager_user_info.group | default(alertmanager_user) }}"
    mode: "0640"
  when: alertmanager_state == 'present'
  notify:
    - restart-alertmanager

- name: Deploy alertmanager using {{ alertmanager_deployment_method }}
  ansible.builtin.include_tasks:
    file: "deploy-{{ alertmanager_deployment_method }}.yml"