self-hosting/roles/matrix-docker/tasks/main.yml

---
- name: Copy matrix docker files
  copy:
    src: matrix
    dest: "{{docker_compose_files_folder}}"

- name: Create matrix-network docker network
  docker_network:
    name: matrix-network

- name: Start matrix docker project
  docker_compose:
    project_src: "{{docker_compose_files_folder}}/matrix"
    state: present

- name: Wait for database to start and count matrix users
  shell: docker-compose exec -T db psql -U synapse synapse -c "select count(*) from users;" -t
  args:
      chdir: "{{docker_compose_files_folder}}/matrix/"
  register: matrix_users_count
  until: matrix_users_count.rc == 0
  retries: 10
  changed_when: false

- name: Restore Matrix database if needed
  command: docker-compose exec -T db sh -c "psql -U synapse synapse < /backups/database.dmp"
  args:
    chdir: "{{docker_compose_files_folder}}/matrix/"
  when: matrix_users_count.stdout|int == 0