#!/bin/bash

set -e

function just_json
{
    for filename in $(./build-scripts/files_changed || echo UNKNOWN)
    do
        if [[ ! "$filename" =~ \.(json|md)$ ]]
        then
            echo "$filename is not json or markdown, triggering full build."
            return 1
        fi
    done
    echo "Only json / markdown files changed, skipping full build."
    return 0
}

if just_json; then
    export JUST_JSON=true
    export CODE_COVERAGE=""
fi

set -x

if [ -n "${CODE_COVERAGE}" ]; then
  travis_retry pip install --user pyyaml cpp-coveralls
  export CXXFLAGS="$CXXFLAGS --coverage"
  export LDFLAGS="$LDFLAGS --coverage"
fi

if [ -n "$CATA_CLANG_TIDY" ]; then
    travis_retry pip install --user compiledb lit
fi

# Influenced by https://github.com/zer0main/battleship/blob/master/build/windows/requirements.sh
if [ -n "${MXE_TARGET}" ]; then
    sudo add-apt-repository 'deb [arch=amd64] https://mirror.mxe.cc/repos/apt xenial main'
    travis_retry sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 84C7C89FC632241A6999ED0A580873F586B72ED9
  # We need to treat apt-get update warnings as errors for which the exit code
  # is not sufficient.  The following workaround inspired by
  # https://unix.stackexchange.com/questions/175146/apt-get-update-exit-status/
  exec {fd}>&2
  travis_retry bash -o pipefail -c \
      "sudo apt-get update 2>&1 | tee /dev/fd/$fd | ( ! grep -q -e '^Err:' -e '^[WE]:' )"
  exec {fd}>&-

  MXE2_TARGET=$(echo "$MXE_TARGET" | sed 's/_/-/g')
  export MXE_DIR=/usr/lib/mxe/usr/bin
  travis_retry sudo apt-get --yes install mxe-${MXE2_TARGET}-gcc mxe-${MXE2_TARGET}-gettext mxe-${MXE2_TARGET}-glib mxe-${MXE2_TARGET}-sdl2 mxe-${MXE2_TARGET}-sdl2-ttf mxe-${MXE2_TARGET}-sdl2-image mxe-${MXE2_TARGET}-sdl2-mixer
  export PLATFORM='i686-w64-mingw32.static'
  export CROSS_COMPILATION='${MXE_DIR}/${PLATFORM}-'
  # Need to overwrite CXX to make the Makefile $CROSS logic work right.
  export CXX="$COMPILER"
  export CCACHE=1

  curl -L -o libbacktrace-i686-w64-mingw32.tar.gz https://github.com/Qrox/libbacktrace/releases/download/2020-01-03/libbacktrace-i686-w64-mingw32.tar.gz
  if ! shasum -a 256 -c ./build-scripts/libbacktrace-i686-w64-mingw32-sha256; then
    echo "Checksum failed for libbacktrace-i686-w64-mingw32.tar.gz"
    exit 1
  fi
  sudo tar -xzf libbacktrace-i686-w64-mingw32.tar.gz --exclude=LICENSE -C ${MXE_DIR}/../${PLATFORM}
fi

if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then
  brew update
  brew install sdl2 sdl2_image sdl2_ttf sdl2_mixer gettext ncurses ccache
  brew link --force gettext ncurses
fi

if [[ "$NATIVE" == "android" ]]; then
  yes | sdkmanager "ndk-bundle"
fi

set +x
