- name: Create overlay network
  hosts: nomad_instances
  become: true
  vars_files:
    - vars/wesher_vars.yml
    - vars/vault_wesher_vars.yml
  vars:
    wesher_key: "{{ wesher_key }}"
    wesher_version: v0.2.6
    wesher_arch_map:
      x86_64: amd64
      armv7l: arm
      aarch64: arm64
    wesher_arch: "{{ wesher_arch_map[ansible_architecture] }}"
    # wesher_sha256_map:
    #   x86_64: 8c551ca211d7809246444765b5552a8d1742420c64eff5677d1e27a34c72aeef
    #   armv7l: 97f5bbf2b00b8b11a4ca224540bf9c1affdb15432c3b6ad8da4c1a7b6175eb5d
    #   aarch64: 507c6397d67ea90bddb3e1c06ec9d8e38d4342ed6f0f6b47855fecc9f1d6fae0
    # wesher_checksum: sha256:{{ wesher_sha256_map[ansible_architecture] }}
    wesher_checksum: sha256:https://github.com/costela/wesher/releases/download/{{ wesher_version }}/wesher.sha256sums

  tasks:
    - name: Download wesher
      get_url:
        url: https://github.com/costela/wesher/releases/download/{{ wesher_version }}/wesher-{{ wesher_arch }}
        dest: /usr/local/sbin/wesher
        checksum: "{{ wesher_checksum }}"
        owner: root
        mode: "0755"

    - name: Install systemd unit
      get_url:
        url: https://github.com/costela/wesher/raw/{{ wesher_version }}/dist/wesher.service
        dest: /etc/systemd/system/wesher.service

    - name: Write wesher config
      lineinfile:
        path: /etc/default/wesher
        create: true
        regexp: "^{{ item.split('=')[0] }}"
        line: "{{ item }}"
        owner: root
        mode: "0600"
      loop:
        - WESHER_CLUSTER_KEY={{ wesher_key }}
        - WESHER_JOIN={% for host in ansible_play_hosts %}{{ hostvars[host].ansible_default_ipv4.address }}{% if not loop.last %},{% endif %}{% endfor %}

    - name: Start wesher
      systemd:
        name: wesher.service
        daemon_reload: true
        state: started
        enabled: true