---
- name: prom
  hosts:
  - alertmanager.guaranteedstruggle.host 
  vars:
    alertmanager_version: '0.28.1'
  gather_facts: yes
  become: yes
  tasks: 

  - name: Ensure group "prometheus" exists
    ansible.builtin.group:
      name:  prometheus
      state: present
  - name: Add user "prometheus"  
    ansible.builtin.user:
      name:   prometheus
      groups: prometheus
      shell: /sbin/nologin
      create_home: no
      append: yes
      comment: "prometheus nologin User"
      state: present 

  - name: Creates directory
    ansible.builtin.file:
      path: /etc/alertmanager
      state: directory
      group: prometheus
      owner: prometheus 
  - name: Creates directory
    ansible.builtin.file:
      path: /usr/share/alertmanager
      state: directory
      group: prometheus
      owner: prometheus 
  - name: Creates directory
    ansible.builtin.file:
      path: /etc/alertmanager/templates
      state: directory
      group: prometheus
      owner: prometheus 
  - name: Creates directory
    ansible.builtin.file:
      path: /alertmanager-data
      state: directory
      group: prometheus
      owner: prometheus 

  - name: Unarchive a file that needs to be downloaded (added in 2.0)
    ansible.builtin.unarchive:
      src: https://github.com/prometheus/alertmanager/releases/download/v{{alertmanager_version}}/alertmanager-{{alertmanager_version}}.linux-amd64.tar.gz
      dest: /usr/share/alertmanager
      creates: /usr/share/alertmanager/alertmanager-{{alertmanager_version}}.linux-amd64
      remote_src: yes


  - name: Create a symbolic link
    ansible.builtin.file:
      src: /usr/share/alertmanager/alertmanager-{{alertmanager_version}}.linux-amd64/alertmanager
      dest: /usr/sbin/alertmanager
      owner: prometheus
      group: prometheus
      state: link
    notify:
      - restart alertmanager

  - name: Create a symbolic link
    ansible.builtin.file:
      src: /usr/share/alertmanager/alertmanager-{{alertmanager_version}}.linux-amd64/amtool
      dest: /usr/sbin/amtool
      owner: prometheus
      group: prometheus
      state: link

  - name: Copy alertmanager.yaml
    register: alertmanager_config_file
    copy:
      src: ../../files/alertmanager/alertmanager.yaml
      dest: /etc/alertmanager/alertmanager.yaml 
    notify:
      - reload alertmanager
  - name: Copy template
    register: template_file
    copy:
      src: ../../files/alertmanager/simple_telegram.tmpl
      dest: /etc/alertmanager/templates/my.tmpl
    notify:
      - reload alertmanager
  - name: Copy prom web-config
    register: web_config_file
    copy:
      src: ../../files/prometheus/web-config.yaml
      dest: /etc/alertmanager/web-config.yaml 
    notify:
      - reload alertmanager

      
  - name: Copy alertmanager.service
    register: alertmanager_service_file
    copy:
      src: ../../files/alertmanager/alertmanager.service
      dest: /etc/systemd/system/alertmanager.service


  - name: ensure service
    ansible.builtin.systemd_service:
      name: alertmanager
      state: started
      enabled: true
      

  - name: Just force systemd to reread configs
    ansible.builtin.systemd_service:
      daemon_reload: true
    when: alertmanager_service_file.changed



  handlers:
  - name: reload alertmanager
    ansible.builtin.systemd_service:
      name: alertmanager
      state: reloaded 
  - name: restart alertmanager
    ansible.builtin.systemd_service:
      name: alertmanager
      state: restarted

#### TODO как откатывать неудачную проверку promtool'ом ?