---
- name: Install monitoring stack
  community.general.pacman:
    name:
      - prometheus
      - prometheus-node-exporter
      - grafana
      - loki
      - promtail
      - alertmanager
    state: present

- name: Create Loki data directories
  file:
    path: "{{ item }}"
    state: directory
    owner: loki
    group: loki
    mode: "0750"
  loop:
    - /var/lib/loki
    - /var/lib/loki/chunks
    - /var/lib/loki/rules

- name: Create Prometheus rules directory
  file:
    path: /etc/prometheus/rules
    state: directory
    owner: prometheus
    group: prometheus
    mode: "0750"

- name: Create promtail data directory
  file:
    path: /var/lib/promtail
    state: directory
    owner: promtail
    group: promtail
    mode: "0750"

- name: Create Grafana provisioning directory
  file:
    path: /etc/grafana/provisioning/datasources
    state: directory
    owner: grafana
    group: grafana
    mode: "0750"

- name: Configure Prometheus
  template:
    src: prometheus.yml.j2
    dest: /etc/prometheus/prometheus.yml
    owner: prometheus
    group: prometheus
    mode: "0640"
  notify: Restart prometheus

- name: Configure Loki
  template:
    src: loki.yaml.j2
    dest: /etc/loki/loki.yaml
    owner: loki
    group: loki
    mode: "0640"
  notify: Restart loki

- name: Configure Promtail
  template:
    src: promtail.yaml.j2
    dest: /etc/loki/promtail.yaml
    owner: root
    group: root
    mode: "0644"
  notify: Restart promtail

- name: Configure Grafana datasources
  template:
    src: grafana-datasources.yaml.j2
    dest: /etc/grafana/provisioning/datasources/homelab.yaml
    owner: grafana
    group: grafana
    mode: "0640"
  notify: Restart grafana

- name: Set Grafana provisioning path
  lineinfile:
    path: /etc/grafana.ini
    regexp: '^;?provisioning\s*='
    line: "provisioning = /etc/grafana/provisioning"
  notify: Restart grafana

- name: Enable and start all monitoring services
  systemd:
    name: "{{ item }}"
    enabled: true
    state: started
  loop:
    - prometheus
    - prometheus-node-exporter
    - grafana
    - loki
    - promtail
    - alertmanager