- name: Initialize docker swarm mode
  ansible.builtin.shell: docker swarm init
  args:
    creates: ~/.ansible_swarm_initialized
  register: result

- name: Create a file if previous command succeeded
  ansible.builtin.file:
    path: ~/.ansible_swarm_initialized
    state: touch 
  when: result is succeeded    

- name: Create a directory for docker if it does not exist
  ansible.builtin.file:
    path: /srv/monitoring
    state: directory
    mode: '0755'  

- name: Copy server.yml docker stack
  ansible.builtin.template:
    src: server.yml
    dest: /srv/monitoring/server.yml
  when: inventory_hostname in groups['servers']

- name: Copy exporter.yml docker stack
  ansible.builtin.template:
    src: exporter.yml
    dest: /srv/monitoring/exporter.yml

- name: Ensure configs directory structure exists (templates folder)
  ansible.builtin.file:
    path: '/srv/monitoring/configs/{{ item.path }}'
    state: directory
  with_community.general.filetree: templates/configs/
  when: 
  - item.state == 'directory'
  - inventory_hostname in groups['servers']  

- name: Ensure config files are populated from templates
  ansible.builtin.template:
    src: '{{ item.src }}'
    dest: '/srv/monitoring/configs/{{ item.path }}'
  with_community.general.filetree: templates/configs/
  when: 
  - item.state == 'file'
  - inventory_hostname in groups['servers']


# We need to put grafana configs from 'files' folder because
# dashboards json contain strings which are interpreted by ansible as variables
- name: Ensure configs directory structure exists (files folder)
  ansible.builtin.file:
    path: '/srv/monitoring/configs/{{ item.path }}'
    state: directory
  with_community.general.filetree: configs/
  when: 
  - item.state == 'directory'
  - inventory_hostname in groups['servers']  

- name: Ensure config files are copied from files
  ansible.builtin.copy:
    src: '{{ item.src }}'
    dest: '/srv/monitoring/configs/{{ item.path }}'
  with_community.general.filetree: configs/
  when: 
  - item.state == 'file'
  - inventory_hostname in groups['servers']


- name: Deploy server stack
  ansible.builtin.shell: docker stack deploy -c server.yml monitoring
  args:
    chdir: /srv/monitoring/
  when: inventory_hostname in groups['servers']    

- name: Deploy exporter stack
  ansible.builtin.shell: docker stack deploy -c exporter.yml exporter
  args:
    chdir: /srv/monitoring/