---
- name: Guard Gyro VMID before API updates
  hosts: mini-pc
  gather_facts: false
  tasks:
    - name: Read existing VMID 150 configuration
      ansible.builtin.command: pct config 150
      register: gyro_existing_vmid
      check_mode: false
      changed_when: false
      failed_when: false

    - name: Refuse to modify a foreign VMID 150
      ansible.builtin.assert:
        that:
          - gyro_existing_vmid.rc != 0 or gyro_existing_hostname == 'gyro'
        fail_msg: VMID 150 already exists and is not the Gyro container.
      vars:
        gyro_existing_hostname: >-
          {{ gyro_existing_vmid.stdout_lines
             | select('match', '^hostname: ')
             | map('regex_replace', '^hostname: ', '')
             | first
             | default('') }}

- name: Create Gyro LXC on mini-pc
  hosts: localhost
  connection: local
  become: false
  gather_facts: false
  vars:
    ansible_become: false
    ansible_python_interpreter: "{{ ansible_playbook_python }}"
    pve_lxc_vmid: 150
    pve_lxc_node: mini-pc
    pve_lxc_hostname: gyro
    pve_lxc_ip: 192.168.1.35/24
    pve_lxc_gateway: 192.168.1.1
    pve_lxc_disk: local-lvm:2
    pve_lxc_cores: 1
    pve_lxc_memory: 512
    pve_lxc_swap: 256
    pve_lxc_startup: order=80
    pve_lxc_unprivileged: true
    pve_lxc_update: false
    pve_lxc_features: []
    pve_lxc_ostemplate: local:vztmpl/debian-13-standard_13.1-2_amd64.tar.zst
  roles:
    - role: pve_lxc

- name: Configure Gyro LXC isolation
  hosts: mini-pc
  gather_facts: false
  vars:
    gyro_vmid: 150
  tasks:
    - name: Read Gyro LXC configuration
      ansible.builtin.command: "pct config {{ gyro_vmid }}"
      register: gyro_lxc_config
      changed_when: false

    - name: Require expected Gyro LXC properties
      ansible.builtin.assert:
        that:
          - "'hostname: gyro' in gyro_lxc_config.stdout"
          - "'unprivileged: 1' in gyro_lxc_config.stdout"
          - "'rootfs: local-lvm:' in gyro_lxc_config.stdout"
          - "'onboot: 1' in gyro_lxc_config.stdout"

    - name: Check for an existing Gyro firewall file
      ansible.builtin.stat:
        path: "/etc/pve/firewall/{{ gyro_vmid }}.fw"
      register: gyro_firewall_file

    - name: Preserve the existing Gyro firewall file
      ansible.builtin.slurp:
        src: "/etc/pve/firewall/{{ gyro_vmid }}.fw"
      register: gyro_previous_firewall
      when: gyro_firewall_file.stat.exists

    - name: Apply and verify Gyro firewall
      block:
        - name: Render Proxmox firewall for Gyro
          ansible.builtin.copy:
            dest: "/tmp/gyro-{{ gyro_vmid }}.fw"
            owner: root
            group: root
            mode: "0640"
            content: |
              [OPTIONS]
              enable: 1
              policy_in: DROP
              policy_out: ACCEPT

              [RULES]
              IN ACCEPT -source {{ homelab_lan_cidr }} -p tcp -dport 22 -log nolog
              IN ACCEPT -source {{ openvpn_network_cidr }} -p tcp -dport 22 -log nolog
              OUT ACCEPT -dest 192.168.1.27 -p tcp -dport 7890 -log nolog
              OUT DROP -dest {{ homelab_lan_cidr }} -log nolog
          register: gyro_rendered_firewall
          changed_when: false

        - name: Compare rendered and active Gyro firewall
          ansible.builtin.command: >-
            cmp -s /tmp/gyro-{{ gyro_vmid }}.fw /etc/pve/firewall/{{ gyro_vmid }}.fw
          register: gyro_firewall_comparison
          changed_when: false
          failed_when: gyro_firewall_comparison.rc not in [0, 1]
          when: gyro_firewall_file.stat.exists

        - name: Install Proxmox firewall for Gyro
          ansible.builtin.command: >-
            cp /tmp/gyro-{{ gyro_vmid }}.fw /etc/pve/firewall/{{ gyro_vmid }}.fw
          when: not gyro_firewall_file.stat.exists or gyro_firewall_comparison.rc != 0
          changed_when: true

        - name: Validate Proxmox firewall configuration
          ansible.builtin.command: pve-firewall compile
          changed_when: false

        - name: Read cluster firewall options
          ansible.builtin.command: pvesh get /cluster/firewall/options --output-format json
          register: gyro_cluster_firewall_options
          changed_when: false

        - name: Report staged Proxmox firewall state
          ansible.builtin.debug:
            msg: >-
              {{ 'Gyro Proxmox firewall is active.'
                 if (gyro_cluster_firewall_options.stdout | from_json).enable | default(0) | int == 1
                 else 'Gyro Proxmox firewall is staged but inactive because the cluster firewall is disabled; UFW remains the enforced isolation layer.' }}

        - name: Verify SSH remains reachable through the firewall
          ansible.builtin.wait_for_connection:
            timeout: 180
          delegate_to: gyro
          vars:
            ansible_become: false
      rescue:
        - name: Restore the previous Gyro firewall file
          ansible.builtin.copy:
            dest: "/tmp/gyro-{{ gyro_vmid }}-previous.fw"
            content: "{{ gyro_previous_firewall.content | b64decode }}"
            owner: root
            group: root
            mode: "0640"
          when: gyro_firewall_file.stat.exists

        - name: Reinstall the previous Gyro firewall file
          ansible.builtin.command: >-
            cp /tmp/gyro-{{ gyro_vmid }}-previous.fw /etc/pve/firewall/{{ gyro_vmid }}.fw
          when: gyro_firewall_file.stat.exists
          changed_when: true

        - name: Remove the failed new Gyro firewall file
          ansible.builtin.file:
            path: "/etc/pve/firewall/{{ gyro_vmid }}.fw"
            state: absent
          when: not gyro_firewall_file.stat.exists

        - name: Recompile restored Proxmox firewall configuration
          ansible.builtin.command: pve-firewall compile
          changed_when: false

        - name: Remove temporary Gyro firewall files after rollback
          ansible.builtin.file:
            path: "{{ item }}"
            state: absent
          loop:
            - "/tmp/gyro-{{ gyro_vmid }}.fw"
            - "/tmp/gyro-{{ gyro_vmid }}-previous.fw"

        - name: Stop after rolling back the Gyro firewall
          ansible.builtin.fail:
            msg: Gyro firewall validation or SSH reachability failed; the previous firewall state was restored.

    - name: Remove temporary Gyro firewall file
      ansible.builtin.file:
        path: "/tmp/gyro-{{ gyro_vmid }}.fw"
        state: absent
      changed_when: false

- name: Wait for Gyro SSH
  hosts: gyro
  gather_facts: false
  tasks:
    - name: Wait for Gyro to accept SSH connections
      ansible.builtin.wait_for_connection:
        timeout: 180