---
- name: Validate compose_service parameters
  ansible.builtin.assert:
    that:
      - compose_service_name | length > 0
      - (compose_service_compose_content | length > 0)
        != (compose_service_compose_template | length > 0)
    fail_msg: >-
      Задайте compose_service_name и ровно один из
      compose_service_compose_content / compose_service_compose_template.

- name: Ensure the service root directory exists
  ansible.builtin.file:
    path: "{{ compose_service_root }}"
    state: directory
    owner: "{{ compose_service_owner }}"
    group: "{{ compose_service_group }}"
    mode: "{{ compose_service_root_mode }}"

- name: Ensure the service data directories exist
  ansible.builtin.file:
    path: "{{ item.path }}"
    state: directory
    owner: "{{ item.owner | default(compose_service_owner) }}"
    group: "{{ item.group | default(compose_service_group) }}"
    mode: "{{ item.mode | default('0750') }}"
  loop: "{{ compose_service_directories }}"
  loop_control:
    label: "{{ item.path }}"

# --- Файл окружения --------------------------------------------------------
# Создаётся один раз под umask 077. Секреты никогда не попадают в вывод:
# задача целиком под no_log.
- name: Generate the environment file once
  ansible.builtin.shell: |
    set -eu
    umask 077
    if [ -e {{ compose_service_env_path | quote }} ]; then
      exit 0
    fi
    : > {{ compose_service_env_path | quote }}
    {% for key, value in compose_service_env_static.items() %}
    printf '%s\n' {{ (key ~ '=' ~ value) | quote }} >> {{ compose_service_env_path | quote }}
    {% endfor %}
    {% for key in compose_service_env_generated %}
    printf '%s=%s\n' {{ key | quote }} "$(openssl rand -hex {{ compose_service_env_secret_bytes }})" >> {{ compose_service_env_path | quote }}
    {% endfor %}
    printf created
  args:
    executable: /bin/sh
  register: compose_service_env_result
  changed_when: compose_service_env_result.stdout == 'created'
  no_log: true
  when: >-
    compose_service_env_static | length > 0 or
    compose_service_env_generated | length > 0

- name: Enforce the environment file permissions
  ansible.builtin.file:
    path: "{{ compose_service_env_path }}"
    owner: "{{ compose_service_owner }}"
    group: "{{ compose_service_group }}"
    mode: "{{ compose_service_env_mode }}"
  when: >-
    compose_service_env_static | length > 0 or
    compose_service_env_generated | length > 0

- name: Install the environment example
  ansible.builtin.copy:
    dest: "{{ compose_service_env_path }}.example"
    owner: "{{ compose_service_owner }}"
    group: "{{ compose_service_group }}"
    mode: "{{ compose_service_env_example_mode }}"
    content: "{{ compose_service_env_example }}"
  when: compose_service_env_example | length > 0

# --- compose.yml -----------------------------------------------------------
- name: Install the Compose configuration from inline content
  ansible.builtin.copy:
    dest: "{{ compose_service_root }}/{{ compose_service_compose_file }}"
    owner: "{{ compose_service_owner }}"
    group: "{{ compose_service_group }}"
    mode: "{{ compose_service_compose_mode }}"
    content: "{{ compose_service_compose_content }}"
  when: compose_service_compose_content | length > 0
  register: compose_service_compose_inline

- name: Install the Compose configuration from a template
  ansible.builtin.template:
    src: "{{ compose_service_compose_template }}"
    dest: "{{ compose_service_root }}/{{ compose_service_compose_file }}"
    owner: "{{ compose_service_owner }}"
    group: "{{ compose_service_group }}"
    mode: "{{ compose_service_compose_mode }}"
  when: compose_service_compose_template | length > 0
  register: compose_service_compose_templated

- name: Record whether the Compose configuration changed
  ansible.builtin.set_fact:
    compose_service_compose_changed: >-
      {{ (compose_service_compose_inline.changed | default(false)) or
         (compose_service_compose_templated.changed | default(false)) }}

# --- systemd ---------------------------------------------------------------
- name: Install the systemd unit
  ansible.builtin.copy:
    dest: "{{ compose_service_unit_path }}"
    owner: root
    group: root
    mode: "0644"
    content: |
      [Unit]
      Description={{ compose_service_description }}
      Wants=network-online.target
      After=network-online.target docker.service{{ (' ' ~ compose_service_after | join(' ')) if compose_service_after else '' }}
      Requires=docker.service{{ (' ' ~ compose_service_requires | join(' ')) if compose_service_requires else '' }}

      [Service]
      Type=oneshot
      RemainAfterExit=yes
      WorkingDirectory={{ compose_service_root }}
      ExecStart={{ compose_service_docker_binary }} compose -f {{ compose_service_root }}/{{ compose_service_compose_file }} up -d --remove-orphans
      ExecStop={{ compose_service_docker_binary }} compose -f {{ compose_service_root }}/{{ compose_service_compose_file }} down

      [Install]
      WantedBy=multi-user.target
  register: compose_service_unit
  notify: compose_service_daemon_reload

- name: Apply the pending systemd daemon reload
  ansible.builtin.meta: flush_handlers

# --- Валидация -------------------------------------------------------------
# no_log: сообщение об ошибке `docker compose config` подставляет значения
# переменных из .env.
- name: Validate the Compose configuration
  ansible.builtin.command:
    argv:
      - "{{ compose_service_docker_binary }}"
      - compose
      - -f
      - "{{ compose_service_root }}/{{ compose_service_compose_file }}"
      - config
      - --quiet
  args:
    chdir: "{{ compose_service_root }}"
  changed_when: false
  no_log: true
  when: compose_service_validate

# --- Запуск ----------------------------------------------------------------
- name: Enable and start the service
  ansible.builtin.systemd:
    name: "{{ compose_service_name }}"
    enabled: "{{ compose_service_enabled }}"
    state: "{{ 'restarted' if compose_service_needs_restart else 'started' }}"
  vars:
    compose_service_needs_restart: >-
      {{ (compose_service_compose_changed | bool) or
         (compose_service_unit.changed | default(false)) or
         (compose_service_restart_triggers | select | list | length > 0) }}

- name: Wait for the service health endpoint
  ansible.builtin.uri:
    url: "{{ compose_service_health_url }}"
    status_code: "{{ compose_service_health_status }}"
    follow_redirects: "{{ compose_service_health_follow_redirects }}"
    return_content: false
  register: compose_service_health
  retries: "{{ compose_service_health_retries }}"
  delay: "{{ compose_service_health_delay }}"
  until: compose_service_health.status in (compose_service_health_status | map('int') | list)
  when: compose_service_health_url | length > 0