- name: Compilers of the contest (same versions and options as Kattis)
  hosts: all
  become: yes
  vars:
    # From atlantic-canada26.kattis.com/contests/atlantic-canada26/languages
    #   C        gcc-15 15.2.0
    #   C++      g++-15 15.2.0
    #   Java     javac / java 25.0.4.1
    #   Python 3 pypy3 7.3.23 (Python 3.11.15)
    # All these versions are present in the base ICPC image. The download
    # block also corrects an existing build with a different Java version.
    # Checksums are from the ICPC Ubuntu repository's package metadata.
    jdk_version: "25.0.4.1+1-1~26.04.4"
    jdk_packages:
      - { name: openjdk-25-jre-headless, arch: amd64, sha256: fc2084482511d56ccb4c33746fe693313a5c0fdcc9a0442e8227e6ba948006d1 }
      - { name: openjdk-25-jre, arch: amd64, sha256: 743a58cd138ccc58c1fbdfd26938a0c75edf21cebe1b938f09f37f4a2fb94866 }
      - { name: openjdk-25-jdk-headless, arch: amd64, sha256: 7561b5bccd2644d8a2da5dcdfb597a40234f481e098bf785d1a8c8f90202e655 }
      - { name: openjdk-25-jdk, arch: amd64, sha256: 9259712883b6ee039b86b7b08292cfb7747bd030e4ee73c66c2517f95999a861 }
      - { name: openjdk-25-source, arch: all, sha256: d4949263fd30053bcb96b247bc6971b8b3d2a7d8e0cfec4c106095f52c3948a9 }
    jdk_cache: /var/cache/acpc-jdk

  tasks:
    - name: Make sure GCC 15 is installed
      apt:
        name: [gcc-15, g++-15]
        state: present

    - name: Check the installed Java packages
      command:
        argv:
          - dpkg-query
          - -W
          - '-f=${Version} ${db:Status-Status}'
          - '{{ item.name }}'
      loop: '{{ jdk_packages }}'
      register: jdk_installed
      changed_when: false
      failed_when: false

    - name: Install the contest Java version if it differs
      when: (jdk_installed.results | map(attribute='stdout') | unique | list) != [jdk_version ~ ' installed']
      block:
        - name: Create the download directory
          file:
            path: "{{ jdk_cache }}"
            state: directory
            mode: '0755'

        - name: Download the Java 25.0.4.1 packages
          get_url:
            url: "https://sysopspackages.icpc.global/ubuntu/resolute/pool/main/o/openjdk-25/{{ item.name }}_{{ jdk_version }}_{{ item.arch }}.deb"
            dest: "{{ jdk_cache }}/{{ item.name }}_{{ jdk_version }}_{{ item.arch }}.deb"
            checksum: "sha256:{{ item.sha256 }}"
            mode: '0644'
          loop: "{{ jdk_packages }}"

        # Their exact-version dependencies must be updated together.
        - name: Install the checked Java packages together
          command: >-
            dpkg --force-confdef --force-confold --install
            {% for package in jdk_packages %}
            {{ jdk_cache }}/{{ package.name }}_{{ jdk_version }}_{{ package.arch }}.deb
            {% endfor %}

        - name: Remove the downloaded packages
          file:
            path: "{{ jdk_cache }}"
            state: absent

    - name: Keep Java at 25.0.4.1 (no automatic upgrade)
      dpkg_selections:
        name: "{{ item.name }}"
        selection: hold
      loop: "{{ jdk_packages }}"

    - name: Install the compile and run commands
      copy:
        src: "files/languages/{{ item }}"
        dest: "/usr/local/bin/{{ item }}"
        mode: '0755'
      loop:
        - compilec
        - compilecpp
        - compilejava
        - compilepython3
        - runc
        - runcpp
        - runjava
        - runpython3

    # Names used by the ICPC technical notes
    - name: Keep compilegcc and compileg++ as other names
      file:
        src: "/usr/local/bin/{{ item.src }}"
        dest: "/usr/local/bin/{{ item.dest }}"
        state: link
        force: yes
      loop:
        - { src: compilec, dest: compilegcc }
        - { src: compilecpp, dest: compileg++ }

    - name: Read the versions
      shell: |
        gcc-15 -dumpfullversion
        g++-15 -dumpfullversion
        java -version 2>&1 | head -1
        javac -version 2>&1
        pypy3 -c 'import sys; print(sys.pypy_version_info[:3], sys.version_info[:3])'
      register: versions
      changed_when: false

    - name: Check the versions against Kattis
      assert:
        that:
          - versions.stdout_lines[0] == "15.2.0"
          - versions.stdout_lines[1] == "15.2.0"
          - "'\"25.0.4.1\"' in versions.stdout_lines[2]"
          - versions.stdout_lines[3] == "javac 25.0.4.1"
          - versions.stdout_lines[4] == "(7, 3, 23) (3, 11, 15)"
        fail_msg: "{{ versions.stdout_lines }}"

    - name: Install the technical notes for the teams
      copy:
        src: docs/TechNotes.pdf
        dest: /usr/share/doc/icpc/TechNotes.pdf
        mode: '0644'