---
- name: Ensure that the seed VM configdrive exists
  hosts: seed-hypervisor
  vars:
    seed_host: "{{ groups['seed'][0] }}"
    seed_hostvars: "{{ hostvars[seed_host] }}"
    seed_user_data_path: "{{ image_cache_path }}/seed-vm-user-data"
  pre_tasks:
    - name: Verify the seed host exists in the Ansible inventory
      fail:
        msg: >
          There should be exactly one host in the seed group. There are
          currently {{ groups['seed'] | length }}.
      when: "{{ groups['seed'] | length != 1 }}"

    - name: Ensure the image cache directory exists
      file:
        path: "{{ image_cache_path }}"
        state: directory

    # The user data script is used to bring up the network interfaces that will
    # be configured by metadata in the configdrive. It could be used for other
    # things in future if necessary.
    - name: Ensure the user data file exists
      copy:
        content: |
          #!/bin/bash
          {% for interface in seed_hostvars.seed_vm_interfaces | map(attribute='net_name') | map('net_interface', seed_host) %}
          ifup {{ interface }}
          {% endfor %}
        dest: "{{ seed_user_data_path }}"

  roles:
    - role: jriguera.configdrive
      # For now assume the VM OS family is the same as the hypervisor's.
      configdrive_os_family: "{{ ansible_os_family }}"
      configdrive_uuid: "{{ seed_host | to_uuid }}"
      configdrive_fqdn: "{{ seed_host }}"
      configdrive_name: "{{ seed_host }}"
      configdrive_ssh_public_key: "{{ lookup('file', ssh_public_key_path) }}"
      configdrive_config_dir: "{{ image_cache_path }}"
      configdrive_volume_path: "{{ image_cache_path }}"
      configdrive_config_dir_delete: True
      configdrive_resolv:
        domain: "{{ seed_hostvars.resolv_domain | default }}"
        search: "{{ seed_hostvars.resolv_search | default }}"
        dns: "{{ seed_hostvars.resolv_nameservers | default([]) }}"
      configdrive_network_device_list: >
        {{ seed_hostvars.seed_vm_interfaces |
           map(attribute='net_name') |
           map('net_configdrive_network_device', seed_host) |
           list }}
      configdrive_config_user_data_path: "{{ seed_user_data_path }}"

  tasks:
    - name: Set a fact containing the configdrive image path
      set_fact:
        seed_vm_configdrive_path: "{{ image_cache_path }}/{{ seed_host }}.iso"

    - name: Ensure configdrive is decoded and decompressed
      shell: >
          base64 -d {{ image_cache_path }}/{{ seed_host | to_uuid }}.gz
          | gunzip
          > {{ seed_vm_configdrive_path }}

    - name: Ensure unnecessary files are removed
      file:
        path: "{{ item }}"
        state: absent
      with_items:
        - "{{ seed_user_data_path }}"
        - "{{ image_cache_path }}/{{ seed_host | to_uuid }}.gz"

- name: Ensure that the seed VM is provisioned
  hosts: seed-hypervisor
  vars:
    seed_host: "{{ groups['seed'][0] }}"
    seed_hostvars: "{{ hostvars[seed_host] }}"
  pre_tasks:
    - name: Check the size of the configdrive image
      stat:
        path: "{{ seed_vm_configdrive_path }}"
      register: stat_result

  roles:
    - role: libvirt-vm
      seed_vm_configdrive_volume:
        name: "{{ seed_hostvars.seed_vm_name }}-configdrive"
        pool: "{{ seed_hostvars.seed_vm_pool }}"
        # Round size up to next multiple of 4096.
        capacity: "{{ (stat_result.stat.size + 4095) // 4096 * 4096 }}"
        device: "cdrom"
        format: "raw"
        image: "{{ seed_vm_configdrive_path }}"
      libvirt_vm_name: "{{ seed_hostvars.seed_vm_name }}"
      libvirt_vm_memory_mb: "{{ seed_hostvars.seed_vm_memory_mb }}"
      libvirt_vm_vcpus: "{{ seed_hostvars.seed_vm_vcpus }}"
      libvirt_vm_volumes: "{{ seed_hostvars.seed_vm_volumes + [seed_vm_configdrive_volume] }}"
      libvirt_vm_interfaces: "{{ seed_hostvars.seed_vm_interfaces }}"
      libvirt_vm_image_cache_path: "{{ image_cache_path }}"
      become: True

  tasks:
    - name: Wait for SSH access to the seed VM
      local_action:
        module: wait_for
        host: "{{ seed_hostvars.ansible_host }}"
        port: 22
        state: started