---
- name: get latest stable github release
  uri:
    url: https://api.github.com/repos/llvm/llvm-project/releases/latest
  register: llvm_latest

- set_fact:
    llvm_major_version:
      '{{llvm_latest.json.tag_name[8:llvm_latest.json.tag_name.find(".")]}}'
- set_fact:
    llvm_apt_repo_url:
      'http://apt.llvm.org/{{ansible_distribution_release}}/'
    llvm_apt_category:
      'llvm-toolchain-{{ansible_distribution_release}}-{{llvm_major_version}}'

- name: add upstream deb repository
  become: true
  apt_repository:
    repo: 'deb {{llvm_apt_repo_url}} {{llvm_apt_category}} main'
    state: present
    filename: llvm
    update_cache: false

- name: add upstream deb-src repository
  become: true
  apt_repository:
    repo: 'deb-src {{llvm_apt_repo_url}} {{llvm_apt_category}} main'
    state: present
    filename: llvm
    update_cache: false

- name: add apt repository key
  become: true
  apt_key:
    url: https://apt.llvm.org/llvm-snapshot.gpg.key
    id: 6084F3CF814B57C1CF12EFD515CF4D18AF4F7421
    state: present

- name: update apt cache
  become: true
  apt:
    update_cache: true

- name: install apt packages
  become: true
  apt:
    name:
      - clang-{{llvm_major_version}}
      - clang-format-{{llvm_major_version}}
      - clang-tidy-{{llvm_major_version}}
      - clang-tools-{{llvm_major_version}}
      - clangd-{{llvm_major_version}}
      - llvm-{{llvm_major_version}}
    state: latest
    install_recommends: true

- name: update alternatives
  become: true
  alternatives:
    link: '/usr/bin/{{item}}'
    name: '{{item}}'
    path: '/usr/bin/{{item}}-{{llvm_major_version}}'
    priority: '{{llvm_major_version}}0'
  with_items:
    - clang-format
    - clangd