matrix-docker-ansible-deploy/roles/custom/matrix-bridge-mautrix-wsproxy/tasks/inject_into_nginx_proxy.yml

---

- name: Fail if matrix-nginx-proxy role already executed
  ansible.builtin.fail:
    msg: >-
      Trying to append Mautrix Wsproxy 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-wsproxy role.      
  when: matrix_nginx_proxy_role_executed | default(False) | bool

- tags:
    - always
  when: matrix_mautrix_wsproxy_enabled|bool
  block:
    - name: Generate Mautrix Wsproxy proxying configuration for matrix-nginx-proxy
      ansible.builtin.set_fact:
        matrix_mautrix_wsproxy_matrix_nginx_proxy_configuration: |
          location ~ ^/(_matrix/wsproxy/.*) {
          {% 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 $backend "matrix-mautrix-wsproxy:29331";
            proxy_pass http://$backend;
          {% else %}
            {# Generic configuration for use outside of our container setup #}
            proxy_pass http://127.0.0.1:29331;
          {% endif %}
          }          

    - name: Register Mautrix Wsproxy 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_mautrix_wsproxy_matrix_nginx_proxy_configuration]
          }}          

- name: Warn about reverse-proxying if matrix-nginx-proxy not used
  ansible.builtin.debug:
    msg: >-
      NOTE: You've enabled the Mautrix wsproxy bridge but are not using the matrix-nginx-proxy
      reverse proxy.
      Please make sure that you're proxying the `{{ matrix_mautrix_wsproxy_public_endpoint }}`
      URL endpoint to the matrix-mautrix-wsproxy container.
      You can expose the container's port using the `matrix_mautrix_wsproxy_container_http_host_bind_port` variable.      
  when: "matrix_mautrix_wsproxy_enabled|bool and matrix_nginx_proxy_enabled is not defined"