---
- name: TerraMaster NAS read-only health inventory
  hosts: terramaster
  gather_facts: false
  become: false

  vars:
    nas_ssh_timeout_seconds: 10

  tasks:
    - name: Verify SSH port is reachable from control node
      ansible.builtin.wait_for:
        host: "{{ ansible_host | default(inventory_hostname) }}"
        port: 22
        timeout: "{{ nas_ssh_timeout_seconds }}"
        connect_timeout: 3
      delegate_to: localhost

    - name: Verify command execution over SSH
      ansible.builtin.raw: "echo NAS_SSH_OK"
      register: nas_ssh_check
      changed_when: false
      failed_when: false

    - name: Collect operating system summary
      ansible.builtin.raw: "uname -a"
      register: nas_uname
      changed_when: false
      failed_when: false

    - name: Collect uptime summary
      ansible.builtin.raw: "uptime"
      register: nas_uptime
      changed_when: false
      failed_when: false

    - name: Collect root filesystem utilization
      ansible.builtin.raw: "df -h /"
      register: nas_root_df
      changed_when: false
      failed_when: false

    - name: Collect memory utilization summary
      ansible.builtin.raw: "free -m"
      register: nas_memory
      changed_when: false
      failed_when: false

    - name: Collect failed systemd unit count (if systemd exists)
      ansible.builtin.raw: "systemctl --failed --no-legend --no-pager 2>/dev/null | wc -l || true"
      register: nas_failed_units
      changed_when: false
      failed_when: false

    - name: Build TerraMaster health summary
      ansible.builtin.set_fact:
        terramaster_health_summary:
          host: "{{ inventory_hostname }}"
          address: "{{ ansible_host | default(inventory_hostname) }}"
          ssh_check:
            rc: "{{ nas_ssh_check.rc | default('n/a') }}"
            stdout: "{{ nas_ssh_check.stdout | default('') | trim }}"
            stderr: "{{ nas_ssh_check.stderr | default('') | trim }}"
          os_summary:
            rc: "{{ nas_uname.rc | default('n/a') }}"
            stdout: "{{ nas_uname.stdout | default('') | trim }}"
          uptime_summary:
            rc: "{{ nas_uptime.rc | default('n/a') }}"
            stdout: "{{ nas_uptime.stdout | default('') | trim }}"
          root_filesystem:
            rc: "{{ nas_root_df.rc | default('n/a') }}"
            stdout: "{{ nas_root_df.stdout | default('') | trim }}"
          memory_summary:
            rc: "{{ nas_memory.rc | default('n/a') }}"
            stdout: "{{ nas_memory.stdout | default('') | trim }}"
          failed_units_count:
            rc: "{{ nas_failed_units.rc | default('n/a') }}"
            stdout: "{{ nas_failed_units.stdout | default('') | trim }}"

    - name: Print TerraMaster health summary
      ansible.builtin.debug:
        var: terramaster_health_summary