---
- name: Determine project root
  set_fact:
    project_root: "{{ (playbook_dir | realpath) | dirname }}"

- name: Set default .env path
  set_fact:
    env_file_resolved: "{{ lookup('ansible.builtin.env', 'GNUTALER_ENV_FILE') }}"

- name: Override .env path with project default when not provided
  set_fact:
    env_file_resolved: "{{ project_root + '/.env' }}"
  when: env_file_resolved | default('') | length == 0

- name: Check if .env file exists
  ansible.builtin.stat:
    path: "{{ env_file_resolved }}"
  register: env_file_stat

- name: Load .env overrides when present
  set_fact:
    env_overrides: "{{ lookup('community.general.read_env', env_file_resolved) }}"
  when: env_file_stat.stat.exists

- name: Warn when .env file is missing
  ansible.builtin.debug:
    msg: >-
      .env file not found at {{ env_file_resolved }}.
      Using defaults from group_vars/all.yml. Create one from .env-example.
  when: not env_file_stat.stat.exists

- name: Merge defaults with .env overrides
  set_fact:
    taler_env: "{{ taler_defaults | combine(env_overrides | default({}), recursive=True) }}"

- name: Build structured variables for play consumption
  set_fact:
    taler_config:
      domain: "{{ taler_env.TALER_DOMAIN }}"
      admin_email: "{{ taler_env.TALER_ADMIN_EMAIL }}"
      acme_contact: "{{ taler_env.LETSENCRYPT_CONTACT }}"
      package_repo: "{{ taler_env.TALER_PACKAGE_REPO }}"
      distribution: "{{ taler_env.TALER_DISTRIBUTION }}"
      currency: "{{ taler_env.TALER_CURRENCY }}"
      exchange_host: "{{ taler_env.TALER_EXCHANGE_HOST }}"
      merchant_host: "{{ taler_env.TALER_MERCHANT_HOST }}"
      pay_host: "{{ taler_env.TALER_PAY_HOST }}"
      wordpress_host: "{{ taler_env.WORDPRESS_HOST }}"
      exchange_master_key: "{{ taler_env.TALER_MASTER_PUBLIC_KEY }}"
      db:
        host: "{{ taler_env.TALER_DB_HOST }}"
        port: "{{ taler_env.TALER_DB_PORT | int }}"
        admin_user: "{{ taler_env.TALER_DB_ADMIN_USER }}"
        admin_password: "{{ taler_env.TALER_DB_ADMIN_PASSWORD }}"
        exchange:
          name: "{{ taler_env.TALER_EXCHANGE_DB }}"
          user: "{{ taler_env.TALER_EXCHANGE_DB_USER }}"
          password: "{{ taler_env.TALER_EXCHANGE_DB_PASSWORD }}"
        merchant:
          name: "{{ taler_env.TALER_MERCHANT_DB }}"
          user: "{{ taler_env.TALER_MERCHANT_DB_USER }}"
          password: "{{ taler_env.TALER_MERCHANT_DB_PASSWORD }}"
      wordpress_db:
        name: "{{ taler_env.WORDPRESS_DB_NAME }}"
        user: "{{ taler_env.WORDPRESS_DB_USER }}"
        password: "{{ taler_env.WORDPRESS_DB_PASSWORD }}"