BUILDTHREADS=${BUILDTHREADS:-1}
SDK_VERSION=${SDK_VERSION:-"Default"}
NDK_VERSION=${NDK_VERSION:-"Default"}
NDK_API=${NDK_API:-"Default"}
Configuration=${Configuration:-"Default"}
XBMC_DEPENDS_ROOT=${XBMC_DEPENDS_ROOT:-"Default"}
XCODE_APP=${XCODE_APP:-"Default"}
PATH_CHANGE_REV_FILENAME=".last_success_revision"
FAILED_BUILD_FILENAME=".last_failed_revision"
#TARBALLS ENV-VAR is only used by android scripts atm
TARBALLS=${TARBALLS:-"/opt/xbmc-tarballs"}
RENDER_SYSTEM=${RENDER_SYSTEM:-"Default"}
BUILD_HOST=${BUILD_HOST:-"Default"}

BINARY_ADDONS_ROOT=tools/depends/target
BINARY_ADDONS="binary-addons"
DEPLOYED_BINARY_ADDONS="-e /addons"

# Jenkins env variables
JENKINS_BUILD_TIMESTAMP=${BUILD_TIMESTAMP:-"unknown"}
JENKINS_BUILD_COMMIT=$(echo ${GIT_COMMIT:-"unknown"} | cut -c1-8)
JENKINS_BUILD_REVISION=${Revision:-"unknown"}
JENKINS_BUILD_ID=${BUILD_ID:-"unknown"}

JENKINS_BUILD_STRING="${JENKINS_BUILD_TIMESTAMP}-${JENKINS_BUILD_COMMIT}-${JENKINS_BUILD_REVISION}-${JENKINS_BUILD_ID}"

#set platform defaults
#$XBMC_PLATFORM_DIR matches the platform subdirs!
case $XBMC_PLATFORM_DIR in
  ios)
    DEFAULT_SDK_VERSION=14.4
    DEFAULT_XBMC_DEPENDS_ROOT=$WORKSPACE/tools/depends/xbmc-depends
    DEFAULT_CONFIGURATION="Debug"
    DEFAULT_XCODE_APP="Xcode12.4.app"
    ;;

  tvos)
    DEFAULT_SDK_VERSION=14.3
    DEFAULT_XBMC_DEPENDS_ROOT=$WORKSPACE/tools/depends/xbmc-depends
    DEFAULT_CONFIGURATION="Debug"
    DEFAULT_XCODE_APP="Xcode12.4.app"
    ;;

  osx64)
    DEFAULT_SDK_VERSION=11.1
    DEFAULT_XBMC_DEPENDS_ROOT=$WORKSPACE/tools/depends/xbmc-depends
    DEFAULT_CONFIGURATION="Debug"
    DEFAULT_XCODE_APP="Xcode12.4.app"
    ;;

  osx-arm64)
    DEFAULT_SDK_VERSION=11.1
    DEFAULT_XBMC_DEPENDS_ROOT=$WORKSPACE/tools/depends/xbmc-depends
    DEFAULT_CONFIGURATION="Debug"
    DEFAULT_XCODE_APP="Xcode12.4.app"
    ;;

  android)
    DEFAULT_NDK_VERSION="21e" # NDK package version (newer API can be inside)
    DEFAULT_NDK_API="21" # Lollipop API level (21) defined in package ./sysroot/usr/include/android/api-level.h
    DEFAULT_XBMC_DEPENDS_ROOT=$WORKSPACE/tools/depends/xbmc-depends
    DEFAULT_CONFIGURATION="Debug"
    ;;

  linux)
    DEFAULT_XBMC_DEPENDS_ROOT=$WORKSPACE/tools/depends/xbmc-depends
    DEFAULT_CONFIGURATION="Debug"
    DEFAULT_RENDER_SYSTEM="gl"
    DEFAULT_BUILD_HOST="x86_64-linux-gnu"
  ;;

  freebsd)
    DEFAULT_CONFIGURATION="Debug"
  ;;
esac

if [ "$SDK_VERSION" == "Default" ]
then
  SDK_VERSION=$DEFAULT_SDK_VERSION
fi

if [ "$NDK_VERSION" == "Default" ]
then
  NDK_VERSION=$DEFAULT_NDK_VERSION
fi

if [ "$NDK_API" == "Default" ]
then
  NDK_API=$DEFAULT_NDK_API
fi

if [ "$XBMC_DEPENDS_ROOT" == "Default" ]
then
  XBMC_DEPENDS_ROOT=$DEFAULT_XBMC_DEPENDS_ROOT
fi

if [ "$XCODE_APP" == "Default" ]
then
  XCODE_APP=$DEFAULT_XCODE_APP
fi

# make osx environment aware of the selected xcode app
export DEVELOPER_DIR=/Applications/$XCODE_APP/Contents/Developer

if [ "$Configuration" == "Default" ]
then
  Configuration=$DEFAULT_CONFIGURATION
fi

if [ "$Configuration" == "Release" ]
then
  DEBUG_SWITCH='--disable-debug'
fi

if [ "$RENDER_SYSTEM" == "Default" ]
then
  RENDER_SYSTEM=$DEFAULT_RENDER_SYSTEM
fi

if [ "$BUILD_HOST" == "Default" ]
then
  BUILD_HOST=$DEFAULT_BUILD_HOST
fi

#helper functions

#hash a dir based on the git revision, Configuration, SDK_PATH, NDK_PATH, NDK_VERSION, SDK_VERSION, TOOLCHAIN and XBMC_DEPENDS_ROOT
#param1 path to be hashed
function getBuildHash ()
{
  local checkPath
  checkPath="$1"
  local hashStr
  hashStr="$(git rev-list HEAD --max-count=1  -- $checkPath)"
  hashStr="$hashStr $Configuration $SDK_PATH $NDK_PATH $NDK_VERSION $SDK_VERSION $TOOLCHAIN $XBMC_DEPENDS_ROOT $XCODE_APP"
  echo $hashStr
}

#param1 path to be checked for changes
function pathChanged ()
{
  local ret
  local checkPath
  ret="0"

  checkPath="$1"
  if [ -e $checkPath/$PATH_CHANGE_REV_FILENAME ]
  then
    if [ "$(cat $checkPath/$PATH_CHANGE_REV_FILENAME)" != "$(getBuildHash $checkPath)" ]
    then
      ret="1"
    fi
  else
    ret="1"
  fi

  echo $ret
}

#param1 path to be tagged with hash
function tagSuccessFulBuild ()
{
  local pathToTag
  pathToTag="$1"
  # tag last successful build with revisions of the given dir
  # needs to match the checks in function getBuildHash
  echo "$(getBuildHash $pathToTag)" > $pathToTag/$PATH_CHANGE_REV_FILENAME
}

#param1 path to be tagged with hash
function tagFailedBuild ()
{
  local pathToTag
  pathToTag="$1"
  # tag last failed build with revisions of the given dir
  # needs to match the checks in function getBuildHash
  echo "$(getBuildHash $pathToTag)" > $pathToTag/$FAILED_BUILD_FILENAME
}

function getBuildRevDateStr ()
{
  echo "${JENKINS_BUILD_STRING}"
}