- hosts: tag_env_prod
  remote_user: ec2-user
  gather_facts: false  # of no use
  #connection: local # prevent from trying to ssh into instance

  vars:
    target_group_arn: "arn:aws:elasticloadbalancing:eu-west-1:440357826049:targetgroup/Target/ae7eb341ab1e701f"

  tasks:
    #    - name: DEBUG
    #      debug:
    #        msg: "{{ hostvars[inventory_hostname].instance_id }}"

    - name: Start instances
      local_action:
        module: amazon.aws.ec2
        instance_ids: "{{ hostvars[inventory_hostname].instance_id }}"
        state: running
      when: targetpractice == "true"

    - name: Wait for instances to be reachable
      local_action:
        module: wait_for
        host: "{{ inventory_hostname }}"
        port: 22
      when: targetpractice == "true"
    
    - name: 'check if example file exists'
      stat:
        path: /tmp/example-exists
      when: blitz == "true" and targetpractice == "true"
      register: example_exists_file

    - name: Register targets in TargetGroup
      local_action:
        module: community.aws.elb_target
        target_group_arn: "{{ target_group_arn }}"
        state: present
        target_id: "{{ hostvars[inventory_hostname].instance_id }}"
        target_status: "unused"
      when: targetpractice == "true" and example_exists_file.stat.exists == True 
    
    - name: Deregister targets in TargetGroup
      local_action:
        module: community.aws.elb_target
        target_group_arn: "{{ target_group_arn }}"
        state: absent
        target_id: "{{ hostvars[inventory_hostname].instance_id }}"
        target_status: "unused"
        deregister_unused: yes
      when: targetpractice == "false"
    
    - name: Stop instances
      local_action:
        module: amazon.aws.ec2
        instance_ids: "{{ hostvars[inventory_hostname].instance_id }}"
        state: stopped
      when: targetpractice == "false"