---
# ================================================================
# Rôle : grafana_alloy
# Tâches principales
#
# Objectif : Installer Grafana Alloy depuis le dépôt officiel
#            Grafana sur une distribution Debian/Ubuntu, puis
#            déployer la configuration et le service systemd.
#
# Étapes CLI équivalentes :
#   1. sudo apt install gpg
#   2. sudo mkdir -p /etc/apt/keyrings/
#   3. wget -q -O - https://apt.grafana.com/gpg.key | \
#        gpg --dearmor | sudo tee /etc/apt/keyrings/grafana.gpg >/dev/null
#   4. echo "deb [signed-by=/etc/apt/keyrings/grafana.gpg] \
#        https://apt.grafana.com stable main" \
#        | sudo tee /etc/apt/sources.list.d/grafana.list
#   5. sudo apt-get update
#   6. sudo apt-get install alloy
#   7. sudo systemctl start alloy
#   8. sudo systemctl enable alloy.service
#
# Cette implémentation reprend ces étapes en Ansible et ajoute
# les déploiements de configuration + unité systemd.
# ================================================================

- name: "[grafana_alloy] Paquets de base (gpg, wget, apt-transport-https, ca-certificates)"
  ansible.builtin.apt:
    name:
      - gpg
      - wget
      - apt-transport-https
      - ca-certificates
    state: present
    update_cache: true
  tags:
    - grafana_alloy
    - install

- name: "[grafana_alloy] Création du répertoire /etc/apt/keyrings"
  ansible.builtin.file:
    path: /etc/apt/keyrings
    state: directory
    mode: "0755"
  tags:
    - grafana_alloy
    - repo

- name: "[grafana_alloy] Téléchargement de la clé GPG Grafana"
  ansible.builtin.get_url:
    url: https://apt.grafana.com/gpg.key
    dest: /tmp/grafana.gpg.key
    mode: "0644"
  notify: Convert GPG key
  tags:
    - grafana_alloy
    - repo

- name: "[grafana_alloy] Conversion de la clé GPG au format keyring"
  ansible.builtin.command:
    cmd: gpg --dearmor -o /etc/apt/keyrings/grafana.gpg /tmp/grafana.gpg.key
    creates: /etc/apt/keyrings/grafana.gpg
  tags:
    - grafana_alloy
    - repo

- name: "[grafana_alloy] Ajout du dépôt Grafana"
  ansible.builtin.apt_repository:
    repo: "deb [signed-by=/etc/apt/keyrings/grafana.gpg] https://apt.grafana.com stable main"
    filename: grafana
    state: present
  tags:
    - grafana_alloy
    - repo

- name: "[grafana_alloy] Installation du paquet alloy"
  ansible.builtin.apt:
    name: alloy
    state: present
    update_cache: true
  tags:
    - grafana_alloy
    - install

# ----------------------------------------------------------------
# Déploiement de la configuration d'Alloy (River)
# ----------------------------------------------------------------
- name: "[grafana_alloy] Dossier de configuration /etc/alloy"
  ansible.builtin.file:
    path: /etc/alloy
    state: directory
    owner: root
    group: root
    mode: "0755"
  tags:
    - grafana_alloy
    - config

- name: "[grafana_alloy] Déploiement de la configuration Alloy"
  ansible.builtin.template:
    src: config.alloy.j2
    dest: "{{ alloy_config_file | default('/etc/alloy/config.alloy') }}"
    owner: root
    group: root
    mode: "0644"
  notify:
    - Restart alloy
  tags:
    - grafana_alloy
    - config

# ----------------------------------------------------------------
# Déploiement/override de l’unité systemd
# ----------------------------------------------------------------
- name: "[grafana_alloy] Déploiement du service systemd (override)"
  ansible.builtin.template:
    src: alloy.service.j2
    dest: /etc/systemd/system/alloy.service
    owner: root
    group: root
    mode: "0644"
  notify:
    - Reload systemd
    - Restart alloy
  tags:
    - grafana_alloy
    - config

# ----------------------------------------------------------------
# Activation et démarrage du service
# ----------------------------------------------------------------
- name: "[grafana_alloy] Démarrage et activation du service alloy"
  ansible.builtin.service:
    name: alloy
    state: started
    enabled: true
  tags:
    - grafana_alloy
    - service