---
# Radeon 680M (RDNA2 iGPU) on SER5 PRO — Mesa Vulkan for llama.cpp / Jellyfin VAAPI

- name: Install software-properties-common (for add-apt-repository)
  ansible.builtin.apt:
    name: software-properties-common
    state: present
  tags: [amd, vulkan, gpu]

- name: Enable Ubuntu universe and multiverse components
  ansible.builtin.command: add-apt-repository -y {{ item }}
  loop:
    - universe
    - multiverse
  register: apt_components
  # With loop, changed_when runs per item — use item stdout, not .results
  changed_when: "'Adding component' in (apt_components.stdout | default(''))"
  failed_when: apt_components.rc is defined and apt_components.rc != 0
  tags: [amd, vulkan, gpu]

- name: Update apt cache after enabling universe/multiverse
  ansible.builtin.apt:
    update_cache: true
  tags: [amd, vulkan, gpu]

- name: Install AMD / Mesa / Vulkan packages
  ansible.builtin.apt:
    name: "{{ amd_vulkan_packages }}"
    state: present
    update_cache: false
  tags: [amd, vulkan, gpu]

- name: Ensure video and render groups exist
  ansible.builtin.group:
    name: "{{ item }}"
    state: present
  loop:
    - video
    - render
  tags: [amd, vulkan, gpu]

- name: Add stack user to video and render (GPU device access)
  ansible.builtin.user:
    name: "{{ stack_owner }}"
    groups:
      - video
      - render
    append: true
  tags: [amd, vulkan, gpu]

- name: Check for DRM render nodes
  ansible.builtin.find:
    paths: /dev/dri
    patterns: "renderD*,card*"
    file_type: any
  register: dri_nodes
  tags: [amd, vulkan, gpu]
  failed_when: false

- name: Report /dev/dri devices
  ansible.builtin.debug:
    msg: >-
      DRM nodes:
      {{ dri_nodes.files | map(attribute='path') | list | default(['(none found — check kernel / firmware)'], true) }}
  tags: [amd, vulkan, gpu]

- name: Probe Vulkan (as stack user when possible)
  become: true
  become_user: "{{ stack_owner }}"
  ansible.builtin.command: vulkaninfo --summary
  register: vulkan_summary
  changed_when: false
  failed_when: false
  tags: [amd, vulkan, gpu]

- name: Show Vulkan summary (first lines)
  ansible.builtin.debug:
    msg: "{{ (vulkan_summary.stdout_lines | default(['vulkaninfo failed or not usable yet']))[:40] }}"
  tags: [amd, vulkan, gpu]

- name: Probe VA-API
  ansible.builtin.command: vainfo
  register: vainfo_out
  changed_when: false
  failed_when: false
  tags: [amd, vulkan, gpu]

- name: Show vainfo snippet
  ansible.builtin.debug:
    msg: "{{ (vainfo_out.stdout_lines | default(vainfo_out.stderr_lines | default(['vainfo unavailable'])))[:25] }}"
  tags: [amd, vulkan, gpu]

- name: udev rule — ensure render nodes are accessible by render group
  ansible.builtin.copy:
    dest: /etc/udev/rules.d/99-amd-render.rules
    mode: "0644"
    content: |
      # Homelab: AMD GPU / APU render nodes for Docker + Vulkan
      KERNEL=="renderD*", GROUP="render", MODE="0660"
      KERNEL=="card*",    GROUP="video",  MODE="0660"
  notify: Reload udev
  tags: [amd, vulkan, gpu]