---
- name: Add Blackbox Exporter job to existing Prometheus config
  hosts: 192.168.0.105
  become: yes

  tasks:
    - name: Backup current config
      copy:
        src: /etc/prometheus/prometheus.yml
        dest: /etc/prometheus/prometheus.yml.backup-blackbox-{{ ansible_date_time.epoch }}
        remote_src: yes
      tags: prometheus

    - name: Check if blackbox job already exists
      shell: |
        grep -q 'job_name:.*blackbox' /etc/prometheus/prometheus.yml && echo "exists" || echo "not exists"
      register: blackbox_exists
      changed_when: false
      tags: prometheus

    - name: Add blackbox job to scrape_configs (if not exists)
      blockinfile:
        path: /etc/prometheus/prometheus.yml
        insertbefore: '^remote_write:'
        block: |
          - job_name: blackbox
            honor_timestamps: true
            track_timestamps_staleness: false
            scrape_interval: 15s
            scrape_timeout: 10s
            metrics_path: /probe
            params:
              module: [http_2xx]
            scheme: http
            follow_redirects: true
            enable_http2: true
            static_configs:
              - targets:
                # Внутренние сервисы стенда
                - "http://192.168.0.110/"
                - "http://192.168.0.111:9187/metrics"
                - "http://192.168.0.112:8080/get"
                - "http://192.168.0.100:3000/"
                - "http://192.168.0.101:9100/metrics"
                - "http://192.168.0.103:8200/ui/"
                - "http://192.168.0.104:8428/metrics"
                - "http://192.168.0.105:9090/metrics"
                - "http://192.168.0.106:3000"
                # Внешние домены
                - "http://forgejo.pvenode.ru/"
                - "http://grafana.pvenode.ru/"
                - "http://prometheus.pvenode.ru/"
                - "http://app1.pvenode.ru/"
                - "http://wiki.pvenode.ru/"
            relabel_configs:
              - source_labels: [__address__]
                target_label: __param_target
              - source_labels: [__param_target]
                target_label: instance
              - target_label: __address__
                replacement: 192.168.0.112:8083
            metric_relabel_configs:
              - source_labels: [__address__]
                separator: ;
                regex: (.*)
                target_label: instance
                replacement: $1
                action: replace
              - source_labels: [__address__]
                separator: ;
                regex: ([^:]+):\d+
                target_label: host
                replacement: ${1}
                action: replace
        marker: "# {mark} ANSIBLE MANAGED BLOCK - blackbox"
      when: blackbox_exists.stdout == "not exists"
      tags: prometheus

    - name: Check Prometheus configuration
      command: promtool check config /etc/prometheus/prometheus.yml
      register: promtool_check
      failed_when: promtool_check.rc != 0
      changed_when: false
      tags: prometheus

    - name: Show config check result
      debug:
        msg: "{{ promtool_check.stdout_lines }}"
      when: promtool_check.rc == 0
      tags: prometheus

    - name: Reload Prometheus if config is valid
      systemd:
        name: prometheus
        state: reloaded
      when: promtool_check.rc == 0
      tags: prometheus

    - name: Show status
      debug:
        msg: |
          Blackbox job {{ "added successfully" if promtool_check.rc == 0 else "failed to add" }}
          Backup created: /etc/prometheus/prometheus.yml.backup-blackbox-{{ ansible_date_time.epoch }}
      tags: prometheus