---
- hosts: '{{ hosts }}'

  tasks:

  - name: Validate that aws_secret_key is provided
    fail:
      msg: Please indicate the aws_secret_key
    when: aws_secret_key is not defined

  - name: Validate that aws_access_key is provided
    fail:
      msg: Please indicate the aws_access_key
    when: aws_access_key is not defined

  - name: Validate that aws_region is provided
    fail:
      msg: Please indicate the aws_region
    when: aws_region is not defined

  - name: Install system packages
    become: yes
    yum:
      name: '{{ item }}'
      state: present
    with_items:
    - elasticache-auto-discovery
    when: ansible_os_family | lower == 'redhat'

  - name: Update .bashrc with aws_access_key
    become: no
    lineinfile:
      backup: yes
      dest: ~/.bashrc
      state: present
      line: 'export AWS_SECRET_ACCESS_KEY={{ aws_secret_key }}'
    when: aws_access_key is defined

  - name: Update .bashrc with aws_secret_key
    become: no
    lineinfile:
      backup: yes
      dest: ~/.bashrc
      state: present
      line: 'export AWS_ACCESS_KEY_ID={{ aws_access_key }}'
    when: aws_secret_key is defined

  - name: Update .bashrc with aws_region
    become: no
    lineinfile:
      backup: yes
      dest: ~/.bashrc
      state: present
      line: 'export AWS_REGION={{ aws_region }}'
    when: aws_secret_key is defined