Minecraft modpacks.ch server management

roles/minecraft/tasks/java.yml

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+- name: Install GPG
+  apt:
+    name: gpg
+    state: present
+  when: item.java is defined and item.java == 8
+  loop: "{{ minecraft }}"
+
+- name: Add AdoptOpenJDK's signing key
+  apt_key:
+    id: 8ED17AF5D7E675EB3EE3BCE98AC3B29174885C03
+    url: https://adoptopenjdk.jfrog.io/adoptopenjdk/api/gpg/key/public
+  when: item.java is defined and item.java == 8
+  loop: "{{ minecraft }}"
+
+- name: Install AdoptOpenJDK repository
+  apt_repository:
+    repo: deb https://adoptopenjdk.jfrog.io/adoptopenjdk/deb/ buster main
+    mode: 0644
+    state: present
+  when: item.java is defined and item.java == 8
+  loop: "{{ minecraft }}"
+
+- name: Install Java 8
+  apt:
+    name: adoptopenjdk-8-hotspot
+    state: present
+  when: item.java is defined and item.java == 8
+  loop: "{{ minecraft }}"
+
+- name: Install Java 11
+  apt:
+    name: openjdk-11-jre
+    state: present
+  when: item.java is not defined or item.java == 11
+  loop: "{{ minecraft }}"
+
+- name: Activate Java 8
+  alternatives:
+    name: java
+    path: /usr/lib/jvm/adoptopenjdk-8-hotspot-amd64/jre/bin/java
+  when: minecraft_java == 8
+
+- name: Activate Java 11
+  alternatives:
+    name: java
+    path: /usr/lib/jvm/java-11-openjdk-amd64/bin/java
+  when: minecraft_java == 11