- name: Install pip
  include_role:
    name: ensure-pip

- name: Check if the command name is set and non-empty
  fail:
    msg: Required variable ensure_python_command_name is not set or empty
  when: ensure_python_command_name is not defined or not ensure_python_command_name.strip()

# Part 1
# Check if the command is already available. If not, pip-install it to a local venv.
# Either way, save the command's full path to the output variable.

- name: Check if {{ ensure_python_command_name }} is available
  # 1. Full path optionally informed by the role caller
  # 2. Ansible user $PATH (bare command name)
  # 3. Local venv (installed from a previous run for this role)
  shell: |
    command -v \
    {{ ensure_python_command_existing }} \
    {{ ensure_python_command_name | quote }} \
    {{ ensure_python_command_venv_executable | quote }} \
    || exit 1
  args:
    executable: /bin/bash
  register: ensure_python_command_preinstalled
  failed_when: false

- name: Export preinstalled ensure_python_command_executable
  set_fact:
    ensure_python_command_executable: "{{ ensure_python_command_preinstalled.stdout_lines[0] }}"
    cacheable: true
  when: ensure_python_command_preinstalled.rc == 0

- name: Install {{ ensure_python_command_package }} to local env
  when: ensure_python_command_preinstalled.rc != 0
  block:
    - name: Create local venv
      command: "{{ ensure_pip_virtualenv_command }} {{ ensure_python_command_venv_path }}"

    - name: Install {{ ensure_python_command_package }} to local venv
      command: "{{ ensure_python_command_venv_path }}/bin/pip install {{ ensure_python_command_package }}{{ ensure_python_command_version }}"

    - name: Export installed ensure_python_command_executable path
      set_fact:
        ensure_python_command_executable: "{{ ensure_python_command_venv_executable }}"
        cacheable: true

# Part 2
# Try to show the command's version and maybe also create a symlink to it in /usr/local/bin

- name: Output {{ ensure_python_command_name }} version
  command: "{{ ensure_python_command_executable }} --version"
  failed_when: false

- name: Make global symlink
  when:
    - ensure_python_command_global_symlink
    - ensure_python_command_executable != ensure_python_command_global_symlink_path
  file:
    state: link
    src: "{{ ensure_python_command_executable }}"
    dest: "{{ ensure_python_command_global_symlink_path }}"
  become: yes