---
# ============================================================================
# life-church/playbooks/lc-precheck.yml
# Pre-checks + fact gathering for Life Church desktops (thinkcenter, tc1).
# READ-ONLY: gathers facts and asserts baseline conditions. Changes nothing.
#
# become (sudo) password is fetched from Infisical /lc-hosts at runtime on
# localhost, then applied per-host via ansible_become_pass. Never hardcoded.
# ============================================================================

# ---------------------------------------------------------------------------
# Play 1 (localhost): resolve Infisical creds + read per-host sudo passwords
# ---------------------------------------------------------------------------
- name: "Life Church pre-check — resolve become passwords from Infisical"
  hosts: localhost
  gather_facts: false
  tasks:
    - name: "[resolve] Infisical creds from env (Semaphore environment)"
      ansible.builtin.set_fact:
        infisical_client_id: "{{ lookup('env','INFISICAL_CLIENT_ID') }}"
        infisical_client_secret: "{{ lookup('env','INFISICAL_CLIENT_SECRET') }}"
        infisical_project_id: "{{ lookup('env','INFISICAL_PROJECT_ID') }}"
        infisical_url: "{{ lookup('env','INFISICAL_API_URL') | default('http://192.168.122.41:8080', true) }}"
        infisical_env_slug: "{{ lookup('env','INFISICAL_ENV_SLUG') | default('prod', true) }}"

    - name: "[resolve] Assert Infisical creds present"
      ansible.builtin.assert:
        that:
          - infisical_client_id | length > 0
          - infisical_client_secret | length > 0
          - infisical_project_id | length > 0
        fail_msg: "Infisical creds missing from environment — check Semaphore environment 'infisical-dev'."

    - name: "[infisical] Log in"
      infisical.vault.login:
        url: "{{ infisical_url }}"
        auth_method: universal_auth
        universal_auth_client_id: "{{ infisical_client_id }}"
        universal_auth_client_secret: "{{ infisical_client_secret }}"
      register: infisical_login
      no_log: true

    - name: "[infisical] Read /lc-hosts secrets"
      infisical.vault.read_secrets:
        login_data: "{{ infisical_login.login_data }}"
        project_id: "{{ infisical_project_id }}"
        env_slug: "{{ infisical_env_slug }}"
        path: "/lc-hosts"
        as_dict: true
      register: lc_secrets
      no_log: true

    - name: "[set] Stash become passwords keyed by host (localhost hostvars)"
      ansible.builtin.set_fact:
        become_pass_map:
          thinkcenter: "{{ lc_secrets.secrets['THINKCENTER_SUDO_PASS'] }}"
          tc1: "{{ lc_secrets.secrets['TC1_SUDO_PASS'] }}"
      no_log: true

# ---------------------------------------------------------------------------
# Play 2 (the desktops): connectivity, facts, and read-only pre-checks
# ---------------------------------------------------------------------------
- name: "Life Church pre-check — connectivity + facts + baseline checks"
  hosts: lifechurch_desktops
  gather_facts: true
  become: true
  vars:
    # pull this host's sudo pass from the map computed on localhost in Play 1
    ansible_become_pass: "{{ hostvars['localhost'].become_pass_map[inventory_hostname] }}"
  tasks:
    - name: "[net] Host reachable (SSH connection established)"
      ansible.builtin.ping:

    - name: "[sudo] Privilege escalation works"
      ansible.builtin.command: id -u
      register: id_check
      changed_when: false

    - name: "[sudo] Confirm running as root after become"
      ansible.builtin.assert:
        that: id_check.stdout == "0"
        fail_msg: "become did not escalate to root on {{ inventory_hostname }}"
        success_msg: "sudo OK on {{ inventory_hostname }}"

    - name: "[disk] Root filesystem usage"
      ansible.builtin.set_fact:
        root_mount: "{{ ansible_mounts | selectattr('mount','equalto','/') | first }}"

    - name: "[disk] Assert root filesystem has >10% free"
      ansible.builtin.assert:
        that: (root_mount.size_available / root_mount.size_total) > 0.10
        fail_msg: "LOW DISK on {{ inventory_hostname }}: only {{ (100 * root_mount.size_available / root_mount.size_total) | round(1) }}% free"
        success_msg: "Disk OK: {{ (100 * root_mount.size_available / root_mount.size_total) | round(1) }}% free"

    - name: "[mem] Assert at least 200MB RAM free"
      ansible.builtin.assert:
        that: ansible_memfree_mb > 200
        fail_msg: "LOW MEMORY on {{ inventory_hostname }}: {{ ansible_memfree_mb }}MB free"
        success_msg: "Memory OK: {{ ansible_memfree_mb }}MB free of {{ ansible_memtotal_mb }}MB"

    - name: "[time] Check NTP/clock sync status"
      ansible.builtin.command: timedatectl show -p NTPSynchronized --value
      register: ntp_sync
      changed_when: false
      failed_when: false

    - name: "[pkg] Count pending apt security updates"
      ansible.builtin.shell: >-
        set -o pipefail;
        apt-get -s -o Debug::NoLocking=true upgrade 2>/dev/null | grep -c '^Inst' || true
      args:
        executable: /bin/bash
      register: pending_updates
      changed_when: false
      failed_when: false

    - name: "[reboot] Reboot-required flag present?"
      ansible.builtin.stat:
        path: /var/run/reboot-required
      register: reboot_required

    - name: "[report] Host summary"
      ansible.builtin.debug:
        msg:
          - "===== {{ inventory_hostname }} ({{ ansible_host }}) ====="
          - "OS            : {{ ansible_distribution }} {{ ansible_distribution_version }} | kernel {{ ansible_kernel }}"
          - "CPU / RAM     : {{ ansible_processor_vcpus }} vcpus | {{ ansible_memtotal_mb }}MB total, {{ ansible_memfree_mb }}MB free"
          - "Root disk     : {{ (root_mount.size_total / 1073741824) | round(1) }}GB total, {{ (root_mount.size_available / 1073741824) | round(1) }}GB free ({{ (100 * root_mount.size_available / root_mount.size_total) | round(1) }}% free)"
          - "Uptime        : {{ (ansible_uptime_seconds / 3600) | round(1) }} hours"
          - "Clock synced  : {{ 'yes' if ntp_sync.stdout == 'yes' else 'NO — check time sync' }}"
          - "Pending pkgs  : {{ pending_updates.stdout | trim }} upgradable"
          - "Reboot needed : {{ 'YES' if reboot_required.stat.exists else 'no' }}"
          - "Default IPv4  : {{ ansible_default_ipv4.address | default('n/a') }} ({{ ansible_default_ipv4.interface | default('n/a') }})"

# ---------------------------------------------------------------------------
# Play 3 (localhost): overall result
# ---------------------------------------------------------------------------
- name: "Life Church pre-check — result"
  hosts: localhost
  gather_facts: false
  tasks:
    - name: "[result] ALL PRE-CHECKS PASSED"
      ansible.builtin.debug:
        msg: "Pre-checks passed for all Life Church desktops — hosts reachable, sudo OK, resources healthy."