#!/bin/bash

# This script builds Skia for ChromeOS by mounting the Skia checkout inside a
# chroot contained within an existing ChromeOS checkout, entering the chroot,
# and running the build_skia_in_chroot script.

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

if [ $(uname) != "Linux" ]; then
    echo "ERROR: Can only build for ChromeOS on Linux."
    exit 1
fi


makeVars=""
deviceID=""
crosBotoFile=""

while (( "$#" )); do

  if [[ $(echo "$1" | grep "^-d$") != "" ]];
  then 
    deviceID="$2"
    shift
  elif [[ "$1" == "--cros-boto-file" ]];
  then
    crosBotoFile="$2"
    shift
  else
    makeVars="$makeVars $1"
  fi

shift
done

if [[ -z "${deviceID}" ]]; then
  echo "You must provide a deviceID with -d."
  exit 1
fi

CHROMEOS_CHROOT="${SCRIPT_DIR}/../toolchain"

# Obtain some extra headers and libraries if needed.
if ! [[ -d "${CHROMEOS_CHROOT}/x86-generic" && \
        -d "${CHROMEOS_CHROOT}/amd64-generic" && \
        -d "${CHROMEOS_CHROOT}/arm-generic" ]]; then
  gsutil cp gs://chromium-skia-gm/chromeos-toolchains/cros_toolchain.tgz ${CHROMEOS_CHROOT}
  if [[ "$?" != "0" ]]; then
    exit 1
  fi
  pushd ${CHROMEOS_CHROOT} > /dev/null
  tar -zxvf cros_toolchain.tgz
  if [[ "$?" != "0" ]]; then
    exit 1
  fi
  rm cros_toolchain.tgz
  popd > /dev/null
fi

# If a boto file was provided, use that instead of the default.
if [[ -n "$crosBotoFile" ]]; then
  export AWS_CREDENTIAL_FILE="$crosBotoFile"
  export BOTO_CONFIG="$crosBotoFile"
fi

# Get the required SDK version.
# TODO(borenet): Should we instead get the latest from GS?
#SDK_VERSION=$(gsutil cat gs://chromeos-image-archive/${deviceID}-release/LATEST-master)
#SDK_VERSION=${SDK_VERSION:4}
SDK_VERSION="4279.0.0"
mkdir -p "${CHROMEOS_CHROOT}/src/chromeos"
echo -n ${SDK_VERSION} > "${CHROMEOS_CHROOT}/src/chromeos/CHROMEOS_LKGM"

# Put a fake .gclient file in the toolchain directory so that the cros tool
# thinks we're in a Chrome checkout.
echo "Delete me!" > "${CHROMEOS_CHROOT}/.gclient"

# Where the Skia code will pretend to live inside the chroot.
SKIA_TOP_DIR="${SCRIPT_DIR}/../../.."

pushd ${CHROMEOS_CHROOT}
cros chrome-sdk --board ${deviceID} --debug -- /bin/sh -c "cd ${SKIA_TOP_DIR}; platform_tools/chromeos/bin/build_skia_in_chroot ${makeVars}"
returnVal=$?
popd > /dev/null

# Clean up
rm ${CHROMEOS_CHROOT}/.gclient

if [ "${returnVal}" != "0" ]
then
  exit 1;
fi