compile_latex:
  image: aergus/latex # the docker image by aergus https://hub.docker.com/r/aergus/latex/
  stage: build
  #variables:
  #  GIT_SSL_NO_VERIFY: "true"
  before_script:
    - git submodule sync
    - git submodule update --init --remote
    # if you need to upload PDFs somewhere else, add a private  SSH key to the
    # gitlab project config and then do the following:
    #- 'which ssh-agent || ( apt-get update -y && apt-get install openssh-client -y )'
    #- 'which rsync || ( apt-get update -y && apt-get install rsync -y )'
    #- mkdir -p ~/.ssh
    #- eval $(ssh-agent -s)
    #- '[[ -f /.dockerenv ]] && echo -e "Host *\n\tStrictHostKeyChecking no\n\n" > ~/.ssh/config'
    #- ssh-add <(echo "$STAGING_PRIVATE_KEY")
  script:
    # the following script requires bash
    # when editing, be careful, not to use any colons since they mess up the yaml parser!
    # compile all the PDFs you are interested in:
    - verb() { echo -e "\e[32;1m===== $* =====\e[0m" ; }
    - failed=( )
    - succeeded=( )
    - compile_tex() { sed -i 's,\\includeonly{[^}]*},,g' "$1" ; latexmk -f -cd -pdf "$1" ; }
    # activate the following line if you use a custom makefile
    #- compile_tex() { make "${1%%.tex}.pdf" ; }
    - mapfile -t gitfiles < <(git ls-files)
    - mapfile -d $'\0' -t texfiles < <(grep -lZ -d skip --include '*.tex' -E '^[^%]*\\documentclass' "${gitfiles[@]}")
    - for t in "${texfiles[@]}" ; do verb "Compiling $t" ; compile_tex "$t" && succeeded+=( "$t" ) || failed+=( "$t" ) ;  done
    - git ls-files -z | xargs -0 rm -v -f || true # remove all tracked files such that they are not included in the artifacts
    # if you want to upload PDFs somewhere else, do something like the following:
    #- rsync -rvva *.pdf wissmann@faui8220:/serv/httpd/www8/htdocs/ext/thorsten/test
    - echo "The following tex were compiled successfully:" ; printf "%s\n" "${succeeded[@]}"
    - echo "The following tex files failed to build:" ; printf "%s\n" "${failed[@]}"
    - echo "Successful Compilation Coverage $(((${#texfiles[@]}-${#failed[@]})*10000/${#texfiles[@]}))" | sed 's/..$/\.&/'
    - if [ "${#failed[@]}" -ge 1 ] ; then verb "failed files $failed" ; false ; fi
  # the second last line in the script prints the statistics which are parsed by the following regex:
  coverage: /^Successful Compilation Coverage [0-9]*\.[0-9][0-9]/
  cache:
    untracked: true # cache all pdf files for subsequent runs
  artifacts:
    name: "${CI_PROJECT_NAME}-pdfs"
    when: always
    expire_in: 100 yrs
    paths:
    - ./*.pdf
    - ./*/*.pdf
    - ./*/*/*.pdf
    - ./*/*/*/*.pdf
    - ./*/*/*/*/*.pdf
    - ./*/*/*/*/*/*.pdf
    - ./*/*/*/*/*/*/*.pdf
    - ./*/*/*/*/*/*/*/*.pdf


  # You can link the most recently *finished* artifacts by a badge:
  #
  # Link:            https://git8.cs.fau.de/%{project_path}/-/jobs/artifacts/%{default_branch}/browse?job=compile_latex
  # Badge image URL: https://git8.cs.fau.de/%{project_path}/badges/%{default_branch}/pipeline.svg
  #
  # e.g.: https://git8.cs.fau.de/thorsten/coalgpartref/-/jobs/artifacts/master/browse?job=compile_latex
  # see also https://docs.git8.com/ee/user/project/pipelines/job_artifacts.html#downloading-the-latest-artifacts
  #
  #environment:
  #    name: Recent PDFs
  #    url: https://git8.cs.fau.de/$CI_PROJECT_PATH/builds/$CI_BUILD_ID/artifacts/browse