---
- name: Check and Add Authorized Key
  hosts: "{{ host }}"
  gather_facts: yes

  tasks:
    - name: Read authorized_keys file
      shell: cat ~/.ssh/authorized_keys | grep "{{ key_to_add }}"
      register: authorized_key_output
      ignore_errors: yes

    - name: Check if authorized key exists
      set_fact:
        authorized_key_exists: "{{ authorized_key_output.stdout | length > 0 }}"
      when: authorized_key_output.rc == 0

    - name: Display result
      debug:
        msg: "Authorized key exists: {{ authorized_key_exists | default(false) }}"

    - name: Add authorized key if it does not exist
      block:
        - name: Add authorized key
          authorized_key:
            user: root  # Replace with the remote user's name
            state: present
            key: "{{ key_to_add }}"
      rescue:
        - name: Handle error when key already exists
          debug:
            msg: "The authorized key already exists. Skipping addition."

      when: not authorized_key_exists | default(false)