---
- name: Check the Caddyfile exists
  stat:
    path: '{{ caddyfile_path }}'
  register: menu_caddyfile

- name: Fail when Caddy is not where we expect it
  fail:
    msg: >-
      {{ caddyfile_path }} is missing. Deploy the caddy playbook, which owns the
      Caddy container and its config, before this one.
  when: not menu_caddyfile.stat.exists

# The Site's web address may still be claimed by an older snippet: the retired
# nginx-menu playbook wrote one per hostname. Two blocks for one address make
# Caddy refuse the whole config, and a refused reload leaves the old proxy in
# place, which is a 502 once the old container is gone.
- name: Drop any older snippet claiming this web address
  blockinfile:
    path: '{{ caddyfile_path }}'
    marker: '# {mark} Ansible managed Caddy snippet for {{ host }}'
    state: absent
  notify: Reload Caddy

# blockinfile replaces whatever sits between its markers, so redeploying updates
# the snippet in place rather than appending a second one.
- name: Point the Site's web address at the app
  blockinfile:
    path: '{{ caddyfile_path }}'
    marker: '# {mark} ANSIBLE MANAGED: menu app ({{ site }})'
    block: '{{ caddy_snippet }}'
    create: no
  notify: Reload Caddy