---
# Docker installation tasks

- name: Check if Docker is already installed
  ansible.builtin.command: docker --version
  register: docker_installed
  changed_when: false
  failed_when: false

- name: Install Docker
  when: docker_installed.rc != 0
  block:
    - name: Install Docker dependencies
      ansible.builtin.apt:
        name:
          - apt-transport-https
          - ca-certificates
          - curl
          - gnupg
          - lsb-release
        state: present
        update_cache: yes
      become: yes

    - name: Create directory for Docker GPG key
      ansible.builtin.file:
        path: /etc/apt/keyrings
        state: directory
        mode: '0755'
      become: yes

    - name: Add Docker GPG key
      ansible.builtin.apt_key:
        url: https://download.docker.com/linux/ubuntu/gpg
        keyring: /etc/apt/keyrings/docker.gpg
        state: present
      become: yes

    - name: Add Docker repository
      ansible.builtin.apt_repository:
        repo: "deb [arch=amd64 signed-by=/etc/apt/keyrings/docker.gpg] https://download.docker.com/linux/ubuntu {{ ansible_distribution_release }} stable"
        state: present
        filename: docker
      become: yes

    - name: Install Docker Engine
      ansible.builtin.apt:
        name:
          - docker-ce
          - docker-ce-cli
          - containerd.io
          - docker-buildx-plugin
          - docker-compose-plugin
        state: present
        update_cache: yes
      become: yes

- name: Add Forgejo user to Docker group
  ansible.builtin.user:
    name: "{{ forgejo_user }}"
    groups: docker
    append: yes
  become: yes

- name: Ensure Docker service is started and enabled
  ansible.builtin.systemd:
    name: docker
    state: started
    enabled: yes
    daemon_reload: yes
  become: yes

- name: Configure Docker daemon
  ansible.builtin.copy:
    dest: /etc/docker/daemon.json
    content: |
      {
        "log-driver": "json-file",
        "log-opts": {
          "max-size": "10m",
          "max-file": "3"
        },
        "storage-driver": "overlay2",
        "userland-proxy": false,
        "live-restore": true
      }
    mode: '0644'
  become: yes
  notify: Restart Docker

- name: Verify Docker installation
  ansible.builtin.command: docker run --rm hello-world
  register: docker_test
  changed_when: false
  become: yes

- name: Display Docker version
  ansible.builtin.debug:
    msg: "Docker is installed and working"
  when: docker_test.rc == 0