#!/bin/sh
set -e
set -x

printenv | sort

if [ $# -ne 5 ]; then
    echo "Usage: $0 SRCROOT OBJROOT BUILT_PRODUCTS_DIR SDKROOT PLATFORM_NAME" 1>&2
    exit 1
fi

SRCROOT="$1"
OBJROOT="$2"
BUILT_PRODUCTS_DIR="$3"
SDKROOT="$4"
PLATFORM_NAME="$5"

ZICHOST_SYMROOT="${BUILT_PRODUCTS_DIR}/zic_host-sym"
ZICHOST_DSTROOT="${BUILT_PRODUCTS_DIR}/zic_host-dst"
ZICHOST="${ZICHOST_DSTROOT}/zic_host"

LOCALTIME="US/Pacific"
POSIXRULES="US/Pacific"

ZONEINFO="${BUILT_PRODUCTS_DIR}/zoneinfo"
DATFILES="${BUILT_PRODUCTS_DIR}/datfiles"
PRIVATEDIR="${BUILT_PRODUCTS_DIR}/private"

# ftp://elsie.nci.nih.gov/pub/tzdata*.tar.gz
# the tzdata*.tar.gz file is automatically unpacked and a version file created
# /usr/local/share/tz/tzdata*.tar.gz is installed by the TimeZoneData project
TARBALL="${SDKROOT}"/usr/local/share/tz/latest_tzdata.tar.gz
if [ ! -L "$TARBALL" ]; then
    echo "error: ${TARBALL} is not a symbolic link" 1>&2
    exit 1
fi
if [ ! -r "$TARBALL" ]; then
    echo "error: ${TARBALL} does not point to a valid file" 1>&2
    exit 1
fi
DATVERS=`readlink ${TARBALL} | cut -d. -f1 | sed -e 's/^tzdata//'`
VERSIONFILE="${ZONEINFO}/+VERSION"

mkdir -p "${DATFILES}"
mkdir -p "${ZONEINFO}"
tar zxf "${TARBALL}" -C "${DATFILES}"
ZONE_FILES="$("${SRCROOT}"/zic.tproj/generate_zone_file_list.sh "${DATFILES}")"
for tz in ${ZONE_FILES}; do
    if [ ${tz} = "northamerica" ]; then
        ARG="-p America/New_York"
    else
        ARG=""
    fi
    "${ZICHOST}" ${ARG} -L /dev/null -d "${ZONEINFO}" \
        -y "${DATFILES}/yearistype.sh" "${DATFILES}/${tz}" || exit 1
done

if [ $? -ne 0 ]; then
    exit 1
fi

chmod -R og-w "${ZONEINFO}"
for f in "zone.tab" "iso3166.tab" "leapseconds"; do
    install -m 0444 "${DATFILES}/$f" "${ZONEINFO}/$f" || exit 1
done
if [ $? -ne 0 ]; then
    exit 1
fi

if [ -n "$RC_BRIDGE" ]; then
    ACTUAL_PLATFORM_NAME="bridgeos"
else
    ACTUAL_PLATFORM_NAME="${PLATFORM_NAME}"
fi

case "$ACTUAL_PLATFORM_NAME" in
bridge*)
    LOCALTIME="GMT"
    ;;
esac

case "$ACTUAL_PLATFORM_NAME" in
iphone*|appletv*|watch*|bridge*)
    mkdir -p "${PRIVATEDIR}/var/db"
    mkdir -p -m a+rx "${PRIVATEDIR}/var/db/timezone"

    # This link must precisely start with TZDIR followed by a slash. radar:13532660
    ln -hfs "/var/db/timezone/zoneinfo/${LOCALTIME}" "${PRIVATEDIR}/var/db/timezone/localtime"
    ;;
macosx)
    mkdir -p "${PRIVATEDIR}/etc"
    ln -hfs "/var/db/timezone/zoneinfo/${LOCALTIME}" "${PRIVATEDIR}/etc/localtime"
    ;;
*)
    echo "Unsupported platform: $ACTUAL_PLATFORM_NAME"
    exit 1
    ;;
esac

rm -f "${VERSIONFILE}"
echo ${DATVERS} > "${VERSIONFILE}"
chmod 444 "${VERSIONFILE}"
touch "${ZONEINFO}"
touch "${PRIVATEDIR}"