#!/bin/sh

set -xe

# Required env variables
test $VERSION
test $BUILD_NUMBER
test $CANDIDATES_DIR

# Optional env variables
: WORKSPACE                     ${WORKSPACE:=/home/worker/workspace}
: ARTIFACTS_DIR                 ${ARTIFACTS_DIR:=/home/worker/artifacts}


TARGET="firefox-${VERSION}.snap"

mkdir -p "$ARTIFACTS_DIR"
rm -rf "${WORKSPACE}/source" && mkdir -p "${WORKSPACE}/source/opt" "${WORKSPACE}/source/usr/bin"

CURL="curl --location --retry 10 --retry-delay 10"

# Download and extract en-US linux64 binary
$CURL -o "${WORKSPACE}/firefox.tar.bz2" \
    "${CANDIDATES_DIR}/${VERSION}-candidates/build${BUILD_NUMBER}/linux-x86_64/en-US/firefox-${VERSION}.tar.bz2"

tar -C "${WORKSPACE}/source/opt" -xf "${WORKSPACE}/firefox.tar.bz2"
mkdir -p "${WORKSPACE}/source/opt/firefox/distribution/extensions"
cp -v distribution.ini "${WORKSPACE}/source/opt/firefox/distribution/"

# Use release-specific list of locales to fetch L10N XPIs
$CURL -o "${WORKSPACE}/l10n_changesets.txt" "${CANDIDATES_DIR}/${VERSION}-candidates/build${BUILD_NUMBER}/l10n_changesets.txt"
cat "${WORKSPACE}/l10n_changesets.txt"

for locale in $(grep -v ja-JP-mac "${WORKSPACE}/l10n_changesets.txt" | awk '{print $1}'); do
    $CURL -o "${WORKSPACE}/source/opt/firefox/distribution/extensions/langpack-${locale}@firefox.mozilla.org.xpi" \
        "$CANDIDATES_DIR/${VERSION}-candidates/build${BUILD_NUMBER}/linux-x86_64/xpi/${locale}.xpi"
done

# Symlink firefox binary to /usr/bin to make it available in PATH
ln -s ../../opt/firefox/firefox "${WORKSPACE}/source/usr/bin"

# Generate snapcraft manifest
sed -e "s/@VERSION@/${VERSION}/g" -e "s/@BUILD_NUMBER@/${BUILD_NUMBER}/g" snapcraft.yaml.in > ${WORKSPACE}/snapcraft.yaml
cd ${WORKSPACE}
snapcraft

mv *.snap "$ARTIFACTS_DIR/$TARGET"

cd $ARTIFACTS_DIR

# Generate checksums file
size=$(stat --printf="%s" $ARTIFACTS_DIR/$TARGET)
sha=$(sha512sum $ARTIFACTS_DIR/$TARGET | awk '{print $1}')
echo "$sha sha512 $size $TARGET" > $TARGET.checksums

echo "Generating signing manifest"
hash=$(sha512sum $TARGET.checksums | awk '{print $1}')

cat << EOF > signing_manifest.json
[{"file_to_sign": "$TARGET.checksums", "hash": "$hash"}]
EOF

# For posterity
find . -ls
cat $TARGET.checksums
cat signing_manifest.json