---
- name: Configure Servers
  hosts: all
  become: true

  tasks:
    - name: Ping host to verify connection
      ansible.builtin.ping:

    - name: Update apt cache and upgrade system packages
      ansible.builtin.apt:
        update_cache: true
        upgrade: dist
        cache_valid_time: 3600

    - name: Check if a reboot is required.
      ansible.builtin.stat:
        path: /var/run/reboot-required
        get_checksum: no
      register: reboot_required_file

    - name: Reboot server and wait for it to finish
      when: reboot_required_file.stat.exists == true
      ansible.builtin.reboot:
        msg: "Rebooting post system update"
        connect_timeout: 5
        reboot_timeout: 300
        pre_reboot_delay: 0
        post_reboot_delay: 15
        test_command: uptime
    
    - name: Install prerequisites
      ansible.builtin.apt:
        pkg:
          - debian-keyring
          - debian-archive-keyring
          - apt-transport-https
          - curl
        state: present

- name: Configure Caddy Server
  hosts: caddy
  become: true
  tags:
    - caddy

  handlers:
    - name: Restart Caddy service
      ansible.builtin.service:
        name: caddy
        state: restarted
        enabled: true
      
  tasks:
    - name: Add Caddy's official Repository
      ansible.builtin.deb822_repository:
        name: caddy
        uris: https://dl.cloudsmith.io/public/caddy/stable/deb/debian
        signed_by: https://dl.cloudsmith.io/public/caddy/stable/gpg.key
        suites: 
          - any-version
        components:
          - main
    
    - name: Update apt cache to ensure we have the latest version of Caddy
      ansible.builtin.apt:
        update_cache: true

    - name: Install Caddy
      ansible.builtin.apt:
        pkg:
          - caddy
        state: present
    
    - name: Create Caddyfile from template
      notify: Restart Caddy service
      ansible.builtin.template:
        src: Caddyfile.j2
        dest: /etc/caddy/Caddyfile
        mode: "0644"

    


- name: Configure Monitoring Server
  hosts: monitoring
  become: true
  tags:
    - monitoring

  handlers:
    - name: Restart Prometheus service
      ansible.builtin.service:
        name: prometheus
        state: restarted
        enabled: true

  tasks:
    - name: Install Prometheus
      ansible.builtin.apt:
        pkg:
          - prometheus
        state: present
    
    - name: Configure Prometheus Alert Rules from template
      notify: Restart Prometheus service
      ansible.builtin.template:
        src: alert_rules.yml.j2
        dest: /etc/prometheus/alert_rules.yml
        mode: "0644"

    - name: Configure Prometheus from template
      notify: Restart Prometheus service
      ansible.builtin.template:
        src: prometheus.yml.j2
        dest: /etc/prometheus/prometheus.yml
        mode: "0644"