language: php

env:
  global:
    - GH_REPO="github.com/${TRAVIS_REPO_SLUG}.git"
    - BUILD_LEAD=0
    - SYNTAX_TEST=0

matrix:
  fast_finish: true
  include:
    - php: 7.2
      env: SYNTAX_TEST=1
    - php: 7.1
    - php: 7.2
      env: BUILD_LEAD=1

branches:
  only:
    - master

before_install:
  - |
    # Disable XDebug
    #
    # XDebug makes PHPUnit and PHP-CS-Fixer slow.
    # We need it only for generating the code coverage report,
    # so we disable it everywhere but for the build lead.
    if [ $BUILD_LEAD == 0 ]
    then
      phpenv config-rm xdebug.ini
    fi

install:
  - |
    # Install dependencies
    # We don't need to install dependencies when doing the syntax check.
    if [ $SYNTAX_TEST == 0 ]
    then
      composer install
    fi

script:
  - |
    # PHPUnit tests
    if [ $SYNTAX_TEST == 0 ]
    then
      php vendor/bin/phpunit --stop-on-error --stop-on-failure -v
    fi

  - |
    # Syntax tests
    #
    # We use PHP-CS-Fixer to check for syntax and style errors,
    # but we run a separate build for that to take advantage of build parallelism.
    if [ $SYNTAX_TEST == 1 ]
    then
      wget http://cs.sensiolabs.org/download/php-cs-fixer-v2.phar -q -O php-cs-fixer.phar
      php php-cs-fixer.phar fix --dry-run --stop-on-violation -v
    fi

after_success:
  - |
    # Upload code coverage
    #
    # The code coverage report is only generated when BUILD_LEAD is 1.
    if [ $BUILD_LEAD == 1 ]
    then
      travis_retry bash <(curl -s https://codecov.io/bash) -f build/logs/clover.xml
    fi