#!/bin/bash
set -e

# This script runs frameworks/support/gradlew

# find script
SCRIPT_DIR="$(cd $(dirname $0) && pwd)"

# resolve directories
cd "$SCRIPT_DIR/../.."
if [ "$OUT_DIR" == "" ]; then
  OUT_DIR="../../out"
fi
mkdir -p "$OUT_DIR"
export OUT_DIR="$(cd $OUT_DIR && pwd)"
if [ "$DIST_DIR" == "" ]; then
  DIST_DIR="$OUT_DIR/dist"
fi
mkdir -p "$DIST_DIR"
export DIST_DIR="$DIST_DIR"
if [ "$CHANGE_INFO" != "" ]; then
  cp "$CHANGE_INFO" "$DIST_DIR/"
fi
if [ "$MANIFEST" == "" ]; then
  export MANIFEST="$DIST_DIR/manifest_${BUILD_NUMBER}.xml"
fi

# parse arguments
if [ "$1" == "--diagnose" ]; then
  DIAGNOSE=true
  shift
else
  DIAGNOSE=false
fi

# record the build start time
BUILD_START_MARKER="$OUT_DIR/build.sh.start"
touch $BUILD_START_MARKER
# record the build number
echo "$BUILD_NUMBER" >> "$OUT_DIR/build_number.log"
# only keep the last 10 build numbers
tail -n 10 "$OUT_DIR/build_number.log" > "$OUT_DIR/build_number.log.tail"
mv "$OUT_DIR/build_number.log.tail" "$OUT_DIR/build_number.log"
cp "$OUT_DIR/build_number.log" "$DIST_DIR/build_number.log"

# runs a given command and prints its result if it fails
function run() {
  echo Running "$*"
  if eval "$*"; then
    return 0
  else
    echo >&2
    echo "Gradle command failed:" >&2
    echo >&2
    # Echo the Gradle command formatted for ease of reading.
    # Put each argument on its own line because some arguments may be long.
    # Also put "\" at the end of non-final lines so the command can be copy-pasted
    echo "$*" | sed 's/ / \\\n/g' | sed 's/^/    /' >&2
    return 1
  fi
}

# export some variables
ANDROID_HOME=../../prebuilts/fullsdk-linux

BUILD_STATUS=0
# enable remote build cache unless explicitly disabled
if [ "$USE_ANDROIDX_REMOTE_BUILD_CACHE" == "" ]; then
  export USE_ANDROIDX_REMOTE_BUILD_CACHE=gcp
fi

# Make sure that our native dependencies are new enough for KMP/konan
# If our existing native libraries are newer, then we don't downgrade them because
# something else (like Bash) might be requiring the newer version.
function areNativeLibsNewEnoughForKonan() {
  host=`uname`
  if [[ "$host" == Darwin* ]]; then
    # we don't have any Macs having native dependencies too old to build KMP/konan
    true
  else
    # on Linux we check whether we have a sufficiently new GLIBCXX
    gcc --print-file-name=libstdc++.so.6 | xargs readelf -a -W | grep GLIBCXX_3.4.21 >/dev/null
  fi
}
if ! areNativeLibsNewEnoughForKonan; then
  KONAN_HOST_LIBS="$OUT_DIR/konan-host-libs"
  LOG="$KONAN_HOST_LIBS.log"
  if $SCRIPT_DIR/prepare-linux-sysroot.sh "$KONAN_HOST_LIBS" > $LOG 2>$LOG; then
    export LD_LIBRARY_PATH=$KONAN_HOST_LIBS
  else
    cat $LOG >&2
    exit 1
  fi
fi

function checkForLeftoverKotlinSessions() {
  KOTLIN_SESSIONS_DIR=$OUT_DIR/gradle-project-cache/kotlin/sessions
  NUM_KOTLIN_SESSIONS="$(ls $KOTLIN_SESSIONS_DIR 2>/dev/null | wc -l)"
  if [ "$NUM_KOTLIN_SESSIONS" -gt 0 ]; then
    echo "Found $NUM_KOTLIN_SESSIONS leftover kotlin sessions in $KOTLIN_SESSIONS_DIR"
  fi
}
checkForLeftoverKotlinSessions

# run the build
if run ./gradlew --ci "$@"; then
  echo build passed
else
  if grep "has several compatible actual declarations in modules" "$DIST_DIR/logs/gradle.log" >/dev/null 2>/dev/null; then
    # try to copy the OUT_DIR into DIST where we can find it
    cd "$OUT_DIR"
    echo "zipping out into $DIST_DIR/out.zip"
    zip --exclude out.zip -qr "$DIST_DIR/out.zip" .
    cd -
  else
    if [ "$DIAGNOSE" == "true" ]; then
     # see if diagnose-build-failure.sh can identify the root cauase
      echo "running diagnose-build-failure.sh, see build.log" >&2
      # Specify a short timeout in case we're running on a remote server, so we don't take too long.
      # We probably won't have enough time to fully diagnose the problem given this timeout, but
      # we might be able to determine whether this problem is reproducible enough for a developer to
      # more easily investigate further
      ./development/diagnose-build-failure/diagnose-build-failure.sh --timeout 600 "--ci $*"
    fi
  fi
  BUILD_STATUS=1 # failure
fi

# check that no unexpected modifications were made to the source repository, such as new cache directories
DIST_DIR=$DIST_DIR $SCRIPT_DIR/verify_no_caches_in_source_repo.sh $BUILD_START_MARKER

# copy configuration cache reports to DIST_DIR so we can see them b/250893051
CONFIGURATION_CACHE_REPORTS_EXPORTED=$DIST_DIR/configuration-cache-reports
CONFIGURATION_CACHE_REPORTS=$OUT_DIR/androidx/build/reports/configuration-cache
if [ -d "$CONFIGURATION_CACHE_REPORTS" ]; then
    rm -rf "$CONFIGURATION_CACHE_REPORTS_EXPORTED"
    cp -r "$CONFIGURATION_CACHE_REPORTS" "$CONFIGURATION_CACHE_REPORTS_EXPORTED"
fi

exit "$BUILD_STATUS"