#!/bin/bash

# Copyright (c) 2010 The Chromium OS Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

# Script to archive build results.  Used by the buildbots.

# Load common constants.  This should be the first executable line.
# The path to common.sh should be relative to your script's location.
. "$(dirname "$0")/common.sh"

# Script must be run outside the chroot
assert_outside_chroot

IMAGES_DIR="${DEFAULT_BUILD_ROOT}/images"
# Default to the most recent image
DEFAULT_TO="${GCLIENT_ROOT}/archive"
DEFAULT_FROM="${IMAGES_DIR}/$DEFAULT_BOARD/$(ls -t1 \
              $IMAGES_DIR/$DEFAULT_BOARD 2>&-| head -1)"

# Flags
DEFINE_string board "$DEFAULT_BOARD" \
    "The board to build packages for."
DEFINE_string chroot "$DEFAULT_CHROOT_DIR" \
    "The chroot of the build to archive."
DEFINE_string from "$DEFAULT_FROM" \
    "Directory to archive"
DEFINE_string to "$DEFAULT_TO" "Directory of build archive"
DEFINE_integer keep_max 0 "Maximum builds to keep in archive (0=all)"
DEFINE_string zipname "image.zip" "Name of zip file to create."
DEFINE_boolean official_build $FLAGS_FALSE "Set CHROMEOS_OFFICIAL=1 for release builds."
DEFINE_string build_number "" \
    "The build-bot build number (when called by buildbot only)." "b"
DEFINE_boolean test_mod $FLAGS_TRUE "Modify image for testing purposes"
DEFINE_boolean factory_test_mod $FLAGS_FALSE \
    "Modify image for factory testing purposes"
DEFINE_boolean factory_install_mod $FLAGS_FALSE \
    "Modify image for factory install purposes"

# Parse command line
FLAGS "$@" || exit 1
eval set -- "${FLAGS_ARGV}"

# Set if default from path is used
DEFAULT_USED=

# Reset "default" FLAGS_from based on passed-in board if not set on cmd-line
if [ "$FLAGS_from" = "$DEFAULT_FROM" ]
then
  FLAGS_from="${IMAGES_DIR}/$FLAGS_board/$(ls -t1 \
              $IMAGES_DIR/$FLAGS_board 2>&-| head -1)"
  DEFAULT_USED=1
fi

# Die on any errors.
set -e

if [ -z $DEFAULT_USED ] && [ $FLAGS_test_mod -eq $FLAGS_TRUE ]
then
  echo "test_mod requires that the default from path be used."
  echo "If non default behavior is desired, run mod_image_for_test manually"
  echo "re-run archive build without test_mod"
  exit 1
fi

if [ ! -d "$FLAGS_from" ]
then
   echo "$FLAGS_from does not exist.  Exiting..."
   exit 1
fi

if [ $FLAGS_official_build -eq $FLAGS_TRUE ]
then
   CHROMEOS_OFFICIAL=1
fi

# Get version information
. "${SCRIPTS_DIR}/chromeos_version.sh"

# Get git hash
# Use git:8 chars of sha1
REVISION=$(git rev-parse HEAD)
REVISION=${REVISION:0:8}

# Use the version number plus revision as the last change.  (Need both, since
# trunk builds multiple times with the same version string.)
LAST_CHANGE="${CHROMEOS_VERSION_STRING}-r${REVISION}"
if [ -n "$FLAGS_build_number" ]
then
   LAST_CHANGE="$LAST_CHANGE-b${FLAGS_build_number}"
fi

# The Chromium buildbot scripts only create a clickable link to the archive
# if an output line of the form "last change: XXX" exists
echo "last change: $LAST_CHANGE"
echo "archive from: $FLAGS_from"

# Create the output directory
OUTDIR="${FLAGS_to}/${LAST_CHANGE}"
ZIPFILE="${OUTDIR}/${FLAGS_zipname}"
FACTORY_ZIPFILE="${OUTDIR}/factory_${FLAGS_zipname}"
echo "archive to dir: $OUTDIR"
echo "archive to file: $ZIPFILE"

rm -rf "$OUTDIR"
mkdir -p "$OUTDIR"


SRC_IMAGE="${FLAGS_from}/chromiumos_image.bin"
BACKUP_IMAGE="${FLAGS_from}/chromiumos_image_bkup.bin"

# Apply mod_image_for_test to the developer image, and store the
# result in a new location. Usage:
# do_chroot_mod "$OUTPUT_IMAGE" "--flags_to_mod_image_for_test"
function do_chroot_mod() {
  MOD_ARGS=$2
  OUTPUT_IMAGE=$1
  cp -f "${SRC_IMAGE}" "${BACKUP_IMAGE}"
  ./enter_chroot.sh -- ./mod_image_for_test.sh --board $FLAGS_board \
      --yes ${MOD_ARGS}
  mv "${SRC_IMAGE}" "${OUTPUT_IMAGE}"
  mv "${BACKUP_IMAGE}" "${SRC_IMAGE}"
}

# Modify image for test if flag set.
if [ $FLAGS_test_mod -eq $FLAGS_TRUE ]
then
  echo "Modifying image for test"
  do_chroot_mod "${FLAGS_from}/chromiumos_test_image.bin" ""

  pushd "${FLAGS_chroot}/build/${FLAGS_board}/usr/local"
  echo "Archiving autotest build artifacts"
  tar cjf "${FLAGS_from}/autotest.tar.bz2" autotest
  popd
fi

if [ $FLAGS_factory_test_mod -eq $FLAGS_TRUE ]
then
  echo "Modifying image for factory test"
  do_chroot_mod "${FLAGS_from}/chromiumos_factory_image.bin" \
      "--factory"
fi

if [ $FLAGS_factory_install_mod -eq $FLAGS_TRUE ]
then
  echo "Modifying image for factory install"
  do_chroot_mod "${FLAGS_from}/chromiumos_factory_install_image.bin" \
      "--factory_install"
fi

# Remove the developer build if test image is also built.
if [ $FLAGS_test_mod -eq $FLAGS_TRUE ] ; then
  rm -f ${SRC_IMAGE}
fi

# Zip the build
echo "Compressing and archiving build..."
cd "$FLAGS_from"
MANIFEST=`ls | grep -v factory`
zip -r "${ZIPFILE}" ${MANIFEST}

if [ $FLAGS_factory_test_mod -eq $FLAGS_TRUE ] || \
   [ $FLAGS_factory_install_mod -eq $FLAGS_TRUE ]
then
  FACTORY_MANIFEST=`ls | grep factory`
  zip -r "${FACTORY_ZIPFILE}" ${FACTORY_MANIFEST}
fi
cd -

# Update LATEST file
echo "$LAST_CHANGE" > "${FLAGS_to}/LATEST"

# Make sure files are readable
chmod 644 "$ZIPFILE" "${FLAGS_to}/LATEST"
chmod 755 "$OUTDIR"

if [ $FLAGS_test_mod -eq $FLAGS_TRUE -a $FLAGS_official_build -eq $FLAGS_TRUE ]
then
  echo "Creating hwqual archive"
  HWQUAL_NAME="chromeos-hwqual-${FLAGS_board}-${CHROMEOS_VERSION_STRING}"
  "${SCRIPTS_DIR}/archive_hwqual" --from "${OUTDIR}" \
    --output_tag "${HWQUAL_NAME}"
fi

# Purge old builds if necessary
if [ $FLAGS_keep_max -gt 0 ]
then
  echo "Deleting old builds (all but the newest ${FLAGS_keep_max})..."
  cd "$FLAGS_to"
  # +2 because line numbers start at 1 and need to skip LATEST file
  rm -rf `ls -t1 | tail --lines=+$(($FLAGS_keep_max + 2))`
  cd -
fi

echo "Done."