---

- when: matrix_ldap_registration_proxy_enabled | bool
  tags:
    - always
  block:
    - name: Fail if matrix-nginx-proxy role already executed
      ansible.builtin.fail:
        msg: >-
          Trying to append Matrix LDAP registration proxy's reverse-proxying configuration to matrix-nginx-proxy,
          but it's pointless since the matrix-nginx-proxy role had already executed.
          To fix this, please change the order of roles in your playbook,
          so that the matrix-nginx-proxy role would run after the matrix-bridge-mautrix-telegram role.
      when: matrix_nginx_proxy_role_executed | default(False) | bool

    - name: Generate Matrix LDAP registration proxy proxying configuration for matrix-nginx-proxy
      ansible.builtin.set_fact:
        matrix_ldap_registration_proxy_matrix_nginx_proxy_configuration: |
          location {{ matrix_ldap_registration_proxy_registration_endpoint }} {
          {% if matrix_nginx_proxy_enabled | default(False) %}
             {# Use the embedded DNS resolver in Docker containers to discover the service #}
             resolver 127.0.0.11 valid=5s;
             set $backend "{{ matrix_ldap_registration_proxy_registration_addr_with_container }}";
             proxy_pass http://$backend/register;
          {% else %}
             {# Generic configuration for use outside of our container setup #}
             proxy_pass http://{{ matrix_ldap_registration_proxy_registration_addr_sans_container }}/register;
          {% endif %}
          }

    - name: Register Matrix LDAP registration proxy proxying configuration with matrix-nginx-proxy
      ansible.builtin.set_fact:
        matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks: |
          {{
            matrix_nginx_proxy_proxy_matrix_additional_server_configuration_blocks | default([])
            +
            [matrix_ldap_registration_proxy_matrix_nginx_proxy_configuration]
          }}
    - name: Warn about reverse-proxying if matrix-nginx-proxy not used
      ansible.builtin.debug:
        msg: >-
          NOTE: You've enabled the Matrix LDAP registration proxy bridge but are not using the matrix-nginx-proxy
          reverse proxy.
          Please make sure that you're proxying the `{{ matrix_ldap_registration_proxy_public_endpoint }}`
          URL endpoint to the matrix-ldap-proxy container.
          You can expose the container's port using the `matrix_ldap_registration_proxy_container_http_host_bind_port` variable.
      when: "not matrix_nginx_proxy_enabled | default(False) | bool"