---
- name: Installiere Docker Engine, Compose V2 und Buildx
  hosts: all
  become: true
  vars:
    docker_dir: "/opt/docker"
    docker_group: "docker"

  tasks:
    - name: Installiere notwendige Voraussetzungen
      ansible.builtin.apt:
        name:
          - ca-certificates
          - curl
          - gnupg
          - lsb-release
        state: present
        update_cache: true

    - name: Füge Docker GPG Schlüssel hinzu
      ansible.builtin.apt_key:
        url: https://download.docker.com/linux/ubuntu/gpg
        state: present
      register: add_key_result
      failed_when: add_key_result.failed and "KEYEXPIRED" not in add_key_result.msg

    - name: Füge Docker Repository hinzu
      ansible.builtin.apt_repository:
        repo: "deb [arch=amd64] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} stable"
        state: present
        filename: docker

    - name: Installiere Docker Engine, CLI und Containerd
      ansible.builtin.apt:
        name:
          - docker-ce
          - docker-ce-cli
          - containerd.io
          - docker-buildx-plugin
          - docker-compose-plugin
        state: present
        update_cache: true

    - name: Stelle sicher, dass die Docker Gruppe existiert
      ansible.builtin.group:
        name: "{{ docker_group }}"
        state: present

    - name: Erstelle Docker Verzeichnis {{ docker_dir }}
      ansible.builtin.file:
        path: "{{ docker_dir }}"
        state: directory
        mode: '0755'
        owner: root
        group: "{{ docker_group }}"

    - name: Aktiviere und starte Docker Dienst
      ansible.builtin.systemd:
        name: docker
        enabled: true
        state: started

    - name: Verifiziere Installation (Docker Version)
      ansible.builtin.command: docker --version
      register: docker_version
      changed_when: false

    - name: Verifiziere Installation (Compose Version)
      ansible.builtin.command: docker compose version
      register: compose_version
      changed_when: false

    - name: Zeige Installationsstatus
      ansible.builtin.debug:
        msg:
          - "Docker: {{ docker_version.stdout }}"
          - "Compose: {{ compose_version.stdout }}"
          - "Verzeichnis {{ docker_dir }} wurde erstellt."