---
- name: Verify
  hosts: all
  become: true
  gather_facts: false
  tasks:
    - name: Read the rendered ruleset
      ansible.builtin.slurp:
        src: /etc/nftables.conf
      register: ruleset

    - name: Decode it
      ansible.builtin.set_fact:
        nft: "{{ ruleset.content | b64decode }}"

    - name: Assert default-deny input policy and management plane
      ansible.builtin.assert:
        that:
          - "'type filter hook input priority 0; policy drop;' in nft"
          - "'ct state established,related accept' in nft"
          - "'iifname \"wt0\" tcp dport 22 accept' in nft"
          - "'ip saddr 10.10.0.99 tcp dport 22 accept' in nft"
        fail_msg: >-
          input chain is missing default-deny, the wt0 SSH allow,
          or the ssh-from-control management-plane rule

    - name: Assert the lan->reverse_proxy:443 ingress rule (zone source)
      ansible.builtin.assert:
        that:
          - "'10.30.0.0/24' in nft"
          - "'tcp dport 443 accept' in nft"
        fail_msg: "missing lan->443 rule for reverse_proxy"

    - name: Assert the srv->photoprism:2342 ingress rule (zone source)
      ansible.builtin.assert:
        that:
          - "'10.20.0.0/24' in nft"
          - "'tcp dport 2342 accept' in nft"
        fail_msg: "missing srv->2342 rule for photoprism"

    - name: Assert the public->stun:3478/udp ingress rule (0.0.0.0/0 source)
      ansible.builtin.assert:
        that:
          - "'0.0.0.0/0' in nft"
          - "'udp dport 3478 accept' in nft"
        fail_msg: "missing public->3478/udp rule for netbird_stun"

    - name: Assert the docker_host extension hook is present
      ansible.builtin.assert:
        that:
          - "'include \"/etc/nftables.d/*.nft\"' in nft"
        fail_msg: "missing drop-in include hook"

    - name: Assert the forward chain defaults to policy drop (input_only off)
      ansible.builtin.assert:
        that:
          - "'hook forward priority 0; policy drop;' in nft"
        fail_msg: >-
          forward chain must default to policy drop when base__firewall_input_only is
          false (container isolation stays the norm on real service hosts)

    - name: Assert the admin-addr SSH allow rule (operator workstation on the LAN)
      ansible.builtin.assert:
        that:
          - "'ip saddr 10.30.0.77 tcp dport 22 accept' in nft"
        fail_msg: "missing admin-addr SSH allow rule from base__firewall_admin_addrs"

    - name: Syntax-check the rendered ruleset (no apply)
      ansible.builtin.command: nft -c -f /etc/nftables.conf
      changed_when: false

    - name: Sshd drop-in present and config valid
      ansible.builtin.command: sshd -t
      changed_when: false
    - name: PasswordAuthentication is disabled
      ansible.builtin.command: grep -q '^PasswordAuthentication no' /etc/ssh/sshd_config.d/10-boma.conf
      changed_when: false
    - name: Fail2ban sshd jail configured
      ansible.builtin.command: grep -q '^\[sshd\]' /etc/fail2ban/jail.d/sshd.local
      changed_when: false

    - name: ListenAddress bound to the fixture mesh IP (mesh-only mode)
      ansible.builtin.command: grep -q '^ListenAddress 100.99.0.1$' /etc/ssh/sshd_config.d/10-boma.conf
      changed_when: false
    - name: Sysctl drop-in for ip_nonlocal_bind is present
      ansible.builtin.command: grep -q '^net.ipv4.ip_nonlocal_bind=1' /etc/sysctl.d/60-boma-nonlocal-bind.conf
      changed_when: false
    - name: Kernel ip_nonlocal_bind is live in this netns
      ansible.builtin.command: sysctl -n net.ipv4.ip_nonlocal_bind
      register: _nonlocal
      changed_when: false
      failed_when: _nonlocal.stdout | trim != '1'

    # mesh concern: enabled but manage=false must be a clean no-op (no install/enrol)
    - name: Check whether netbird got installed
      ansible.builtin.command: which netbird
      register: _nb
      changed_when: false
      failed_when: false
    - name: Assert mesh manage=false installed nothing
      ansible.builtin.assert:
        that:
          - _nb.rc != 0
        fail_msg: "netbird must not be installed when base__mesh_manage is false"
        success_msg: "mesh concern is a clean no-op under manage=false"

    - name: Read /etc/hosts (coordinator pin)
      ansible.builtin.slurp:
        src: /etc/hosts
      register: _etchosts
    - name: Assert the coordinator FQDN is pinned to the fixture IP (DNS-resilience / R8)
      ansible.builtin.assert:
        that:
          - "'203.0.113.9 netbird.askari.wingu.me' in (_etchosts.content | b64decode)"  # slurp content is always base64
        fail_msg: "base__mesh_coordinator_pin did not render the /etc/hosts coordinator pin"
        success_msg: "coordinator FQDN pinned in /etc/hosts"