---
- name: Update Minecraft Server
  hosts: minecraft
  become: true
  vars:
    minecraft_user: minecraft
    minecraft_home: /opt/minecraft
    mc_service_name: minecraft
    mc_version_manifest: https://piston-meta.mojang.com/mc/game/version_manifest.json
    backup_dir: "{{ minecraft_home }}/backup"
    timestamp: "{{ lookup('pipe', 'date +%Y%m%d%H%M%S') }}"

  tasks:

    - name: Ensure jq and wget are installed
      apt:
        name: [ wget, jq ]
        state: present
        update_cache: true

    - name: Stop Minecraft service
      systemd:
        name: "{{ mc_service_name }}"
        state: stopped

    - name: Create backup directory
      file:
        path: "{{ backup_dir }}"
        state: directory
        owner: "{{ minecraft_user }}"
        group: "{{ minecraft_user }}"
        mode: "0755"

    - name: Backup current server.jar
      copy:
        src: "{{ minecraft_home }}/server.jar"
        dest: "{{ backup_dir }}/server.jar.{{ timestamp }}"
        remote_src: true
      ignore_errors: yes  # in case it's missing (first run)

    - name: Backup world data folder
      archive:
        path: "{{ minecraft_home }}/world"
        dest: "{{ backup_dir }}/world-{{ timestamp }}.tar.gz"
        format: gz
      become_user: "{{ minecraft_user }}"
      when: ansible.builtin.stat.path is not none
      ignore_errors: yes

    - name: Download latest Minecraft server JAR
      shell: |
        set -e
        cd "{{ minecraft_home }}"
        latest_url=$(wget -qO- {{ mc_version_manifest }} | jq -r '.latest.release as $v | .versions[] | select(.id == $v) | .url')
        server_url=$(wget -qO- "$latest_url" | jq -r '.downloads.server.url')
        wget -qO server.jar "$server_url"
      args:
        executable: /bin/bash

    - name: Ensure correct ownership of files
      file:
        path: "{{ minecraft_home }}"
        owner: "{{ minecraft_user }}"
        group: "{{ minecraft_user }}"
        recurse: true

    - name: Start Minecraft service
      systemd:
        name: "{{ mc_service_name }}"
        state: started

    - name: Verify service is running
      systemd:
        name: "{{ mc_service_name }}"
        state: started
        enabled: true

    - name: Display success message
      debug:
        msg: "Minecraft server updated and restarted successfully on {{ inventory_hostname }}"