---
- name: Deploy Monitoring on general_server
  hosts: general_server
  become: yes
  vars_files:
    - group_vars/all/vars.yml
    - group_vars/all/vault.yml

  tasks:
    - name: Создание системного юзера
      ansible.builtin.user:
        name: metrics
        state: present
        shell: /usr/sbin/nologin

    - name: Создать директории для проекта
      ansible.builtin.file:
        path: "{{ item }}"
        state: directory
        mode: '0755'
        owner: metrics
        group: metrics
      loop:
        - "{{ monitoring_dir }}"
        - "{{ monitoring_dir }}/grafana_provisioning"

    - name: Устанавливаем Docker и утилиты
      apt:
        name:
          - docker.io
          - docker-compose
          - python3-pip
          - ufw
          - git
          - htop
          - rsync
        state: present
        update_cache: yes

    - name: Скопировать конфигурации сервисов
      ansible.builtin.template:
        src: "{{ item.src }}"
        dest: "{{ monitoring_dir }}/{{ item.dest }}"
        mode: '0644'
        owner: metrics
        group: metrics
      loop:
        - { src: "prometheus.yml.j2", dest: "prometheus.yml" }
        - { src: "prometheus-web.yml.j2", dest: "prometheus-web.yml" }
        - { src: "node-exporter-web.yml.j2", dest: "node-exporter-web.yml" }
        - { src: "grafana-datasource.yml.j2", dest: "grafana_provisioning/datasource.yml" }
        - { src: "docker-compose.yml.j2", dest: "docker-compose.yml" }

      notify: Restart docker-compose

    - name: Запустить Docker Compose
      community.docker.docker_compose_v2:
        project_src: "{{ monitoring_dir }}"
        state: present

  handlers:
    - name: Restart docker-compose
      community.docker.docker_compose_v2:
        project_src: "{{ monitoring_dir }}"
        state: restarted

# ==============================================================================================================

- name: Deploy Exporter on other servers
  hosts: all
  become: yes
  vars_files:
    - group_vars/all/vars.yml
    - group_vars/all/vault.yml

  tasks:
    - name: Создание системного юзера
      ansible.builtin.user:
        name: metrics
        state: present
        shell: /usr/sbin/nologin

    - name: Установить понятное имя хоста с индексом
      ansible.builtin.hostname:
        name: "node-{{ ansible_play_hosts.index(inventory_hostname) }}"
      when: ansible_play_hosts.index(inventory_hostname) > 0
      notify: restart node-exporter

    - name: Создать директории для проекта
      ansible.builtin.file:
        path: "{{ monitoring_dir }}"
        state: directory
        mode: '0700'
        owner: metrics
        group: metrics

    - name: Устанавливаем Docker и утилиты
      apt:
        name:
          - python3-pip
          - ufw
          - git
          - htop
          - rsync
        state: present
        update_cache: yes

    - name: Создать системного пользователя для Node Exporter
      ansible.builtin.user:
        name: node_exporter
        shell: /usr/sbin/nologin
        system: true
        create_home: false

    - name: Создать директорию под конкретную версию
      ansible.builtin.file:
        path: "/opt/node_exporter-{{ node_exporter_version }}"
        state: directory
        owner: node_exporter
        group: node_exporter
        mode: '0700'

    - name: Скачать и распаковать архив экспортера
      ansible.builtin.unarchive:
        src: "https://github.com/prometheus/node_exporter/releases/download/v{{ node_exporter_version }}/node_exporter-{{ node_exporter_version }}.linux-{{ node_exporter_arch }}.tar.gz"
        dest: "/opt/node_exporter-{{ node_exporter_version }}"
        remote_src: true
        extra_opts:
          - "--strip-components=1"
        creates: "/opt/node_exporter-{{ node_exporter_version }}/node_exporter"
        owner: node_exporter
        group: node_exporter

    - name: Создать симлинк на исполняемый файл
      ansible.builtin.file:
        src: "/opt/node_exporter-{{ node_exporter_version }}/node_exporter"
        dest: "/usr/local/bin/node_exporter"
        state: link
        force: true 

    - name: Создать директорию для конфигурации экспортера
      ansible.builtin.file:
        path: /etc/node_exporter
        state: directory
        owner: node_exporter
        group: node_exporter
        mode: '0750'

    - name: Скопировать конфиг веб-авторизации для Node Exporter
      ansible.builtin.template:
        src: node-exporter-web.yml.j2
        dest: /etc/node_exporter/web.yml
        owner: node_exporter
        group: node_exporter
        mode: '0600'

    - name: Создать systemd unit файл
      ansible.builtin.template:
        src: node_exporter.service.j2
        dest: /etc/systemd/system/node_exporter.service
        owner: root
        group: root
        mode: '0644'
      notify: restart node-exporter

    - name: Включить автозапуск и запустить сервис
      ansible.builtin.systemd_service:
        name: node_exporter
        state: started
        enabled: true

  handlers:
    - name: restart node-exporter
      ansible.builtin.systemd_service:
        name: node_exporter
        state: restarted
        daemon_reload: true