---
# Generic app deployment.
#
# CI passes: app=<name> app_env=<beta|prod> app_ref=<git sha>
# Manual run with none of those redeploys every app in this host's host_apps
# at branch master.
#
# host_apps (host_vars) lists what runs on THIS host; app_catalog (group_vars)
# describes how each app is built.

- name: Classify catalog by type
  ansible.builtin.set_fact:
    django_names: "{{ app_catalog | dict2items | selectattr('value.type', 'equalto', 'django') | map(attribute='key') | list }}"
    node_names: "{{ app_catalog | dict2items | selectattr('value.type', 'equalto', 'node-static') | map(attribute='key') | list }}"

- name: Resolve deploy targets for {{ inventory_hostname }}
  ansible.builtin.set_fact:
    deploy_targets: >-
      {{ (host_apps | default([]) | selectattr('name', 'equalto', app | default('')) | selectattr('env', 'equalto', app_env | default('')) | list)
         if (app is defined and app_env is defined)
         else (host_apps | default([])) }}

- name: Show deploy targets
  ansible.builtin.debug:
    msg: "ref={{ app_ref | default('(per-app default branch)') }} targets={{ deploy_targets | map(attribute='name') | zip(deploy_targets | map(attribute='env')) | list }}"

- name: Deploy Django (docker compose) apps
  ansible.builtin.include_tasks: django.yml
  loop: "{{ deploy_targets | selectattr('name', 'in', django_names) | list }}"
  loop_control:
    loop_var: app_item
    label: "{{ app_item.name }}/{{ app_item.env }}"

- name: Run Django migrations once (shared external DB)
  ansible.builtin.command:
    cmd: >-
      docker compose -f {{ app_catalog[item.name].compose_file }} --env-file .env
      exec -T {{ app_catalog[item.name].web_service }}
      {{ app_catalog[item.name].migrate_cmd }}
    chdir: "{{ apps_src_dir }}/{{ item.name }}_{{ item.env }}"
  environment:
    COMPOSE_PROJECT_NAME: "{{ item.name }}_{{ item.env }}"
  loop: "{{ deploy_targets | selectattr('name', 'in', django_names) | list }}"
  loop_control:
    label: "{{ item.name }}/{{ item.env }}"
  become: true
  become_user: "{{ admin_user }}"
  run_once: true
  changed_when: true

- name: Deploy node static apps
  ansible.builtin.include_tasks: node_static.yml
  loop: "{{ deploy_targets | selectattr('name', 'in', node_names) | list }}"
  loop_control:
    loop_var: app_item
    label: "{{ app_item.name }}/{{ app_item.env }}"