sudo: required

services:
  - docker
addons:
   apt:
     sources:
       - git-core
     packages:
       - git

language: java
jdk:
  - oraclejdk11

before_install:
  - BRANCH=${TRAVIS_PULL_REQUEST_BRANCH:-$TRAVIS_BRANCH}
  - '[ $(git log --format=%B  $TRAVIS_COMMIT_RANGE | grep -i "#doc" | wc -l) -gt 0 ] && FORCE_DOC_GEN=0 || FORCE_DOC_GEN=1'
  - MODIFIED_DOCS=$(git diff --name-only $TRAVIS_COMMIT_RANGE | grep -E 'site-*|README.adoc|^documentation/.*.adoc$' | wc -l)
  - '[ $BRANCH == "master" ] && [ $MODIFIED_DOCS -ge 1 ] && GENERATE_DOC=0 || GENERATE_DOC=1'
  - 'if [ $FORCE_DOC_GEN == 0 ] || [ $GENERATE_DOC == 0 ]; then
      git config user.name "${GH_USER}";
      git config user.email "${GH_EMAIL}";
      git config remote.origin.fetch +refs/heads/*:refs/remotes/origin/*;
      git fetch --unshallow origin gh-pages;
      git worktree add -b gh-pages gh-pages origin/gh-pages;
      GH_REF=$(git remote get-url origin | awk "{sub(/https:\/\//,\"https://${GH_TOKEN}@\")}; 1" | awk "{sub(/\.git/, \"\")} 1");
      docker pull antora/antora:2.0.0;
    fi'

script:
  - 'if [ $FORCE_DOC_GEN == 0 ] || [ $GENERATE_DOC == 0 ]; then
      docker run -v $TRAVIS_BUILD_DIR:/antora --rm -t antora/antora:2.0.0 --pull --stacktrace site-workshop.yml;
      docker run -v $TRAVIS_BUILD_DIR:/antora --rm -t antora/antora:2.0.0 --pull --stacktrace site-gh-pages.yml;
    fi'

after_success:
  - 'if [ $FORCE_DOC_GEN == 0 ] || [ $GENERATE_DOC == 0 ]; then
      cd gh-pages;
      touch .nojekyll;
      git add .;
      git commit -m "Publishes new documentation";
      git push --quiet "${GH_REF}" gh-pages > /dev/null 2>&1;
    fi'