#!/bin/bash
#
#  Copyright (c) 2018, The OpenThread Authors.
#  All rights reserved.
#
#  Redistribution and use in source and binary forms, with or without
#  modification, are permitted provided that the following conditions are met:
#  1. Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#  2. Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#  3. Neither the name of the copyright holder nor the
#     names of its contributors may be used to endorse or promote products
#     derived from this software without specific prior written permission.
#
#  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
#  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
#  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
#  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
#  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
#  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
#  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
#  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
#  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
#  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
#  POSSIBILITY OF SUCH DAMAGE.
#
#    Description:
#      This file runs various tests of OpenThread.
#

set -euo pipefail

readonly OT_BUILDDIR="${OT_BUILDDIR:-${PWD}/build}"
readonly OT_SRCDIR="${PWD}"

readonly OT_COLOR_PASS='\033[0;32m'
readonly OT_COLOR_FAIL='\033[0;31m'
readonly OT_COLOR_SKIP='\033[0;33m'
readonly OT_COLOR_NONE='\033[0m'

readonly OT_NODE_TYPE="${OT_NODE_TYPE:-cli}"
readonly OT_NATIVE_IP="${OT_NATIVE_IP:-0}"
readonly THREAD_VERSION="${THREAD_VERSION:-1.2}"
readonly INTER_OP="${INTER_OP:-0}"
readonly VERBOSE="${VERBOSE:-0}"
readonly BORDER_ROUTING="${BORDER_ROUTING:-1}"
readonly BORDER_ROUTING_NAT64="${BORDER_ROUTING_NAT64:-1}"
readonly INTER_OP_BBR="${INTER_OP_BBR:-1}"

readonly OT_COREDUMP_DIR="${PWD}/ot-core-dump"
readonly FULL_LOGS=${FULL_LOGS:-0}
readonly TREL=${TREL:-0}
readonly LOCAL_OTBR_DIR=${LOCAL_OTBR_DIR:-""}

build_simulation()
{
    local version="$1"
    local options=(
        "-DBUILD_TESTING=ON"
        "-DOT_ANYCAST_LOCATOR=ON"
        "-DOT_DNS_CLIENT=ON"
        "-DOT_DNS_DSO=ON"
        "-DOT_DNSSD_SERVER=ON"
        "-DOT_ECDSA=ON"
        "-DOT_EXTERNAL_HEAP=ON"
        "-DOT_HISTORY_TRACKER=ON"
        "-DOT_MESSAGE_USE_HEAP=OFF"
        "-DOT_NETDATA_PUBLISHER=ON"
        "-DOT_PING_SENDER=ON"
        "-DOT_REFERENCE_DEVICE=ON"
        "-DOT_SERVICE=ON"
        "-DOT_SRP_CLIENT=ON"
        "-DOT_SRP_SERVER=ON"
        "-DOT_UPTIME=ON"
        "-DOT_THREAD_VERSION=${version}"
    )

    if [[ ${FULL_LOGS} == 1 ]]; then
        options+=("-DOT_FULL_LOGS=ON")
    fi

    if [[ ${version} == "1.2" ]]; then
        options+=("-DOT_DUA=ON")
        options+=("-DOT_MLR=ON")
    fi

    if [[ ${VIRTUAL_TIME} == 1 ]]; then
        options+=("-DOT_SIMULATION_VIRTUAL_TIME=ON")
    fi

    if [[ ${version} == "1.2" ]]; then
        options+=("-DOT_CSL_RECEIVER=ON")
        options+=("-DOT_LINK_METRICS_INITIATOR=ON")
        options+=("-DOT_LINK_METRICS_SUBJECT=ON")
    fi

    if [[ ${ot_extra_options[*]+x} ]]; then
        options+=("${ot_extra_options[@]}")
    fi

    OT_CMAKE_BUILD_DIR="${OT_BUILDDIR}/openthread-simulation-${version}" "${OT_SRCDIR}"/script/cmake-build simulation "${options[@]}"

    if [[ ${VIRTUAL_TIME} == 1 ]] && [[ ${OT_NODE_TYPE} == rcp* ]]; then
        OT_CMAKE_NINJA_TARGET=ot-rcp OT_CMAKE_BUILD_DIR="${OT_BUILDDIR}/openthread-simulation-${version}" "${OT_SRCDIR}"/script/cmake-build simulation "${options[@]}" "-DOT_SIMULATION_VIRTUAL_TIME_UART=ON"
    fi

    if [[ ${version} == "1.2" && ${INTER_OP_BBR} == 1 ]]; then

        options+=("-DOT_BACKBONE_ROUTER=ON")

        OT_CMAKE_BUILD_DIR="${OT_BUILDDIR}/openthread-simulation-${version}-bbr" "${OT_SRCDIR}"/script/cmake-build simulation "${options[@]}"

        if [[ ${VIRTUAL_TIME} == 1 ]] && [[ ${OT_NODE_TYPE} == rcp* ]]; then
            OT_CMAKE_NINJA_TARGET=ot-rcp OT_CMAKE_BUILD_DIR="${OT_BUILDDIR}/openthread-simulation-${version}-bbr" "${OT_SRCDIR}"/script/cmake-build simulation "${options[@]}" "-DOT_SIMULATION_VIRTUAL_TIME_UART=ON"
        fi

    fi
}

build_posix()
{
    local version="$1"
    local options=("-DOT_MESSAGE_USE_HEAP=ON" "-DOT_THREAD_VERSION=${version}" "-DBUILD_TESTING=ON")

    if [[ ${version} == "1.2" ]]; then
        options+=("-DOT_DUA=ON")
        options+=("-DOT_MLR=ON")
    fi

    if [[ ${FULL_LOGS} == 1 ]]; then
        options+=("-DOT_FULL_LOGS=ON")
    fi

    if [[ ${VIRTUAL_TIME} == 1 ]]; then
        options+=("-DOT_POSIX_VIRTUAL_TIME=ON")
    fi

    if [[ ${OT_NATIVE_IP} == 1 ]]; then
        options+=("-DOT_PLATFORM_UDP=ON" "-DOT_PLATFORM_NETIF=ON")
    fi

    if [[ ${ot_extra_options[*]+x} ]]; then
        options+=("${ot_extra_options[@]}")
    fi

    OT_CMAKE_BUILD_DIR="${OT_BUILDDIR}/openthread-posix-${version}" "${OT_SRCDIR}"/script/cmake-build posix "${options[@]}"

    if [[ ${version} == "1.2" && ${INTER_OP_BBR} == 1 ]]; then

        options+=("-DOT_BACKBONE_ROUTER=ON")

        OT_CMAKE_BUILD_DIR="${OT_BUILDDIR}/openthread-posix-${version}-bbr" "${OT_SRCDIR}"/script/cmake-build posix "${options[@]}"
    fi
}

build_for_one_version()
{
    local version="$1"

    build_simulation "${version}"

    if [[ ${OT_NODE_TYPE} == rcp* ]]; then
        build_posix "${version}"
    fi
}

do_build()
{
    build_for_one_version "${THREAD_VERSION}"

    if [[ ${THREAD_VERSION} == "1.2" && ${INTER_OP} == "1" ]]; then
        build_for_one_version 1.1
    fi
}

do_clean()
{
    ./script/gcda-tool clean
    rm -rfv "${OT_BUILDDIR}" || sudo rm -rfv "${OT_BUILDDIR}"
}

do_unit_version()
{
    local version=$1
    local builddir="${OT_BUILDDIR}/openthread-simulation-${version}"

    if [[ ! -d ${builddir} ]]; then
        echo "Cannot find build directory: ${builddir}"
        exit 1
    fi

    (
        cd "${builddir}"
        ninja test
    )
}

do_unit()
{
    do_unit_version "${THREAD_VERSION}"

    if [[ ${THREAD_VERSION} == "1.2" && ${INTER_OP_BBR} == 1 ]]; then
        do_unit_version "1.2-bbr"
    fi
}

do_cert()
{
    export top_builddir="${OT_BUILDDIR}/openthread-simulation-${THREAD_VERSION}"
    export top_srcdir="${OT_SRCDIR}"

    case "${OT_NODE_TYPE}" in
        rcp | rcp-cli | cli)
            export NODE_TYPE=sim
            ;;
        rcp-ncp | ncp)
            export NODE_TYPE=ncp-sim
            ;;
    esac

    if [[ ${THREAD_VERSION} == "1.2" ]]; then
        export top_builddir_1_2_bbr="${OT_BUILDDIR}/openthread-simulation-1.2-bbr"
        if [[ ${INTER_OP} == "1" ]]; then
            export top_builddir_1_1="${OT_BUILDDIR}/openthread-simulation-1.1"
        fi
    fi

    export PYTHONPATH=tests/scripts/thread-cert

    [[ ! -d tmp ]] || rm -rvf tmp
    PYTHONUNBUFFERED=1 "$@"
    exit 0
}

do_cert_suite()
{
    export top_builddir="${OT_BUILDDIR}/openthread-simulation-${THREAD_VERSION}"

    if [[ ${THREAD_VERSION} == "1.2" ]]; then
        export top_builddir_1_2_bbr="${OT_BUILDDIR}/openthread-simulation-1.2-bbr"
        if [[ ${INTER_OP} == "1" ]]; then
            export top_builddir_1_1="${OT_BUILDDIR}/openthread-simulation-1.1"
        fi
    fi

    export PYTHONPATH=tests/scripts/thread-cert
    export VIRTUAL_TIME

    sudo modprobe ip6table_filter

    python3 tests/scripts/thread-cert/run_cert_suite.py --multiply "${MULTIPLY:-1}" "$@"
    exit 0
}

do_get_thread_wireshark()
{
    echo "Downloading thread-wireshark from https://github.com/openthread/wireshark/releases ..."
    local download_url=https://github.com/openthread/wireshark/releases/download/ot-pktverify-20200727/thread-wireshark.tar.gz
    local save_file=/tmp/thread-wireshark.tar.gz

    rm -rf /tmp/thread-wireshark || true
    rm -rf "${save_file}" || true
    curl -L "${download_url}" -o "${save_file}"
    tar -C /tmp -xvzf "${save_file}"

    LD_LIBRARY_PATH=/tmp/thread-wireshark /tmp/thread-wireshark/tshark -v
    LD_LIBRARY_PATH=/tmp/thread-wireshark /tmp/thread-wireshark/dumpcap -v
    rm -rf "${save_file}"
}

do_build_otbr_docker()
{
    echo "Building OTBR Docker ..."
    local otdir
    local otbrdir
    local otbr_options=(
        "-DOT_ANYCAST_LOCATOR=ON"
        "-DOT_COVERAGE=ON"
        "-DOT_DNS_CLIENT=ON"
        "-DOT_DUA=ON"
        "-DOT_MLR=ON"
        "-DOT_NETDATA_PUBLISHER=ON"
        "-DOT_SLAAC=ON"
        "-DOT_SRP_CLIENT=ON"
        "-DOT_FULL_LOGS=ON"
        "-DOT_UPTIME=ON"
        "-DOTBR_DUA_ROUTING=ON"
        "-DCMAKE_CXX_FLAGS='-DOPENTHREAD_CONFIG_DNSSD_SERVER_BIND_UNSPECIFIED_NETIF=1'"
    )

    if [[ ${TREL} == 1 ]]; then
        otbr_options+=("-DOTBR_TREL=ON")
    else
        otbr_options+=("-DOTBR_TREL=OFF")
    fi

    if [[ ${BORDER_ROUTING_NAT64} == 1 ]]; then
        otbr_options+=("-DOT_BORDER_ROUTING_NAT64=ON")
    else
        otbr_options+=("-DOT_BORDER_ROUTING_NAT64=OFF")
    fi

    local otbr_docker_image=${OTBR_DOCKER_IMAGE:-otbr-ot12-backbone-ci}

    otbrdir=$(mktemp -d -t otbr_XXXXXX)
    otdir=$(pwd)

    (
        if [[ -z ${LOCAL_OTBR_DIR} ]]; then
            ./script/git-tool clone https://github.com/openthread/ot-br-posix.git --depth 1 "${otbrdir}"
        else
            cp -r "${LOCAL_OTBR_DIR}"/* "${otbrdir}"
            rm -rf "${otbrdir}"/build
        fi
        cd "${otbrdir}"
        rm -rf third_party/openthread/repo
        cp -r "${otdir}" third_party/openthread/repo
        rm -rf .git
        docker build -t "${otbr_docker_image}" -f etc/docker/Dockerfile . \
            --build-arg BORDER_ROUTING="${BORDER_ROUTING}" \
            --build-arg INFRA_IF_NAME=eth0 \
            --build-arg BACKBONE_ROUTER=1 \
            --build-arg REFERENCE_DEVICE=1 \
            --build-arg OT_BACKBONE_CI=1 \
            --build-arg NAT64=0 \
            --build-arg REST_API=0 \
            --build-arg WEB_GUI=0 \
            --build-arg MDNS="${OTBR_MDNS:-mDNSResponder}" \
            --build-arg OTBR_OPTIONS="${otbr_options[*]}"
    )

    rm -rf "${otbrdir}"
}

do_pktverify()
{
    python3 ./tests/scripts/thread-cert/pktverify/verify.py "$1"
}

ot_exec_expect_script()
{
    local log_file="tmp/log_expect"

    for script in "$@"; do
        echo -e "\n${OT_COLOR_PASS}EXEC${OT_COLOR_NONE} ${script}"
        sudo killall ot-rcp || true
        sudo killall ot-cli || true
        sudo killall ot-cli-ftd || true
        sudo killall ot-cli-mtd || true
        sudo rm -rf tmp
        mkdir tmp
        {
            if [[ ${OT_NATIVE_IP} == 1 ]]; then
                sudo -E expect -df "${script}" 2>"${log_file}"
            else
                expect -df "${script}" 2>"${log_file}"
            fi
        } || {
            local EXIT_CODE=$?

            # The exit status 77 for skipping is inherited from automake's test driver for script-based testsuites
            if [[ ${EXIT_CODE} == 77 ]]; then
                echo -e "\n${OT_COLOR_SKIP}SKIP${OT_COLOR_NONE} ${script}"
                return 0
            else
                echo -e "\n${OT_COLOR_FAIL}FAIL${OT_COLOR_NONE} ${script}"
                cat "${log_file}" >&2
                return "${EXIT_CODE}"
            fi
        }
        echo -e "\n${OT_COLOR_PASS}PASS${OT_COLOR_NONE} ${script}"
        if [[ ${VERBOSE} == 1 ]]; then
            cat "${log_file}" >&2
        fi
    done
}

do_expect()
{
    local test_patterns

    if [[ ${OT_NODE_TYPE} == rcp* ]]; then
        if [[ ${OT_NATIVE_IP} == 1 ]]; then
            test_patterns=(-name 'tun-*.exp')
        else
            test_patterns=(-name 'posix-*.exp' -o -name 'cli-*.exp')
            if [[ ${THREAD_VERSION} == "1.2" ]]; then
                test_patterns+=(-o -name 'v1_2-*.exp')
            fi
        fi
    else
        test_patterns=(-name 'cli-*.exp' -o -name 'simulation-*.exp')
    fi

    if [[ $# != 0 ]]; then
        ot_exec_expect_script "$@"
    else
        export OT_COLOR_PASS OT_COLOR_FAIL OT_COLOR_SKIP OT_COLOR_NONE OT_NATIVE_IP VERBOSE
        export -f ot_exec_expect_script

        find tests/scripts/expect -type f -perm "$([[ $OSTYPE == darwin* ]] && echo '+' || echo '/')"111 \( "${test_patterns[@]}" \) -exec bash -c 'set -euo pipefail;ot_exec_expect_script "$@"' _ {} +
    fi

    exit 0
}

print_usage()
{
    echo "USAGE: [ENVIRONMENTS] $0 COMMANDS

ENVIRONMENTS:
    OT_NODE_TYPE    'cli' for CLI simulation, 'ncp' for NCP simulation.
                    'rcp' or 'rcp-cli' for CLI on POSIX platform.
                    'rcp-ncp' for NCP on POSIX platform.
                    The default is 'cli'.
    OT_NATIVE_IP    1 to enable platform UDP and netif on POSIX platform. The default is 0.
    OT_BUILDDIR     The output directory for cmake build. By default the directory is './build'. For example,
                    'OT_BUILDDIR=\${PWD}/my_awesome_build ./script/test clean build'.
    VERBOSE         1 to build or test verbosely. The default is 0.
    VIRTUAL_TIME    1 for virtual time, otherwise real time. The default value is 0 when running expect tests,
                    otherwise default value is 1.
    THREAD_VERSION  1.1 for Thread 1.1 stack, 1.2 for Thread 1.2 stack. The default is 1.2.
    INTER_OP        1 to build 1.1 together. Only works when THREAD_VERSION is 1.2. The default is 0.
    INTER_OP_BBR    1 to build bbr version together. Only works when THREAD_VERSION is 1.2. The default is 1.

COMMANDS:
    clean           Clean built files to prepare for new build.
    build           Build project for running tests. This can be used to rebuild the project for changes.
    cert            Run a single thread-cert test. ENVIRONMENTS should be the same as those given to build or update.
    cert_suite      Run a batch of thread-cert tests and summarize the test results. Only echo logs for failing tests.
    unit            Run all the unit tests. This should be called after simulation is built.
    expect          Run expect tests.
    help            Print this help.

EXAMPLES:
    # Test CLI with default settings
    $0 clean build cert tests/scripts/thread-cert/Cert_5_1_01_RouterAttach.py
    $0 cert tests/scripts/thread-cert/Cert_5_1_02_ChildAddressTimeout.py

    # Test NCP with default settings
    $0 clean build cert tests/scripts/thread-cert/Cert_5_1_01_RouterAttach.py
    $0 cert tests/scripts/thread-cert/Cert_5_1_02_ChildAddressTimeout.py

    # Test CLI with radio only
    $0 clean build cert tests/scripts/thread-cert/Cert_5_1_01_RouterAttach.py
    $0 cert tests/scripts/thread-cert/Cert_5_1_02_ChildAddressTimeout.py

    # Test CLI with real time
    VIRTUAL_TIME=0 $0 clean build cert tests/scripts/thread-cert/Cert_5_1_01_RouterAttach.py
    VIRTUAL_TIME=0 $0 cert tests/scripts/thread-cert/Cert_5_1_02_ChildAddressTimeout.py

    # Test Thread 1.1 CLI with real time
    THREAD_VERSION=1.1 VIRTUAL_TIME=0 $0 clean build cert tests/scripts/thread-cert/Cert_5_1_01_RouterAttach.py
    THREAD_VERSION=1.1 VIRTUAL_TIME=0 $0 cert tests/scripts/thread-cert/Cert_5_1_02_ChildAddressTimeout.py

    # Test Thread 1.2 with real time, use 'INTER_OP=1' when the case needs both versions.
    VIRTUAL_TIME=0 $0 clean build cert tests/scripts/thread-cert/v1_2_test_enhanced_keep_alive.py
    INTER_OP=1 VIRTUAL_TIME=0 $0 clean build cert tests/scripts/thread-cert/v1_2_router_5_1_1.py
    INTER_OP=1 VIRTUAL_TIME=0 $0 clean build cert_suite tests/scripts/thread-cert/v1_2_*

    # Run a single expect test
    $0 clean build expect tests/scripts/expect/cli-log-level.exp

    # Run all expect tests
    $0 clean build expect
    "

    exit "$1"
}

do_prepare_coredump_upload()
{
    echo "$OT_COREDUMP_DIR/corefile-%e-%p-%t" | sudo tee /proc/sys/kernel/core_pattern
    rm -rf "$OT_COREDUMP_DIR"
    mkdir -p "$OT_COREDUMP_DIR"
}

do_copy_so_lib()
{
    mkdir -p "$OT_COREDUMP_DIR/so-lib"
    cp /lib/x86_64-linux-gnu/libgcc_s.so.1 "$OT_COREDUMP_DIR/so-lib"
    cp /lib/x86_64-linux-gnu/libc.so.6 "$OT_COREDUMP_DIR/so-lib"
    cp /lib64/ld-linux-x86-64.so.2 "$OT_COREDUMP_DIR/so-lib"
}

do_check_crash()
{
    shopt -s nullglob

    # Scan core dumps and collect binaries which crashed
    declare -A bin_list=([dummy]='')
    for f in "$OT_COREDUMP_DIR"/core*; do
        bin=$(file "$f" | grep -E -o "execfn: '(.*')," | sed -r "s/execfn: '(.*)',/\1/")
        bin_list[$bin]=''
    done

    for key in "${!bin_list[@]}"; do
        if [ "$key" != "dummy" ]; then
            # Add postfix for binaries to avoid conflicts caused by different Thread version
            postfix=""
            if [[ $key =~ openthread-(simulation|posix)-([0-9]\.[0-9]) ]]; then
                postfix="-$(echo "$key" | sed -r "s/.*openthread-(simulation|posix)-([0-9]\.[0-9]).*/\2/")"
            fi
            bin_name=$(basename "$key")
            cp "$key" "$OT_COREDUMP_DIR"/"$bin_name""$postfix"
        fi
    done

    # echo 1 and copy so libs if crash found, echo 0 otherwise
    [[ ${#bin_list[@]} -gt 1 ]] && (
        echo 1
        do_copy_so_lib
    ) || echo 0
}

do_generate_coverage()
{
    mkdir -p tmp/
    sudo chmod 777 tmp/
    rm -f tmp/coverage.lcov
    if [[ $1 == "llvm" ]]; then
        local llvm_gcov
        llvm_gcov="$(mktemp -d)/llvm-gcov"
        echo '#!/bin/bash' >>"$llvm_gcov"
        echo 'exec llvm-cov gcov "$@"' >>"$llvm_gcov"
        chmod +x "$llvm_gcov"
        lcov --gcov-tool "$llvm_gcov" --directory . --capture --output-file tmp/coverage.info
    else
        ./script/gcda-tool collect
        ./script/gcda-tool install

        lcov --directory . --capture --output-file tmp/coverage.info
    fi
    lcov --list tmp/coverage.info
    lcov --extract tmp/coverage.info "$PWD/src/core/common/message.cpp" | c++filt
}

do_combine_coverage()
{
    ls -R coverage/

    readarray -d '' files < <(find coverage/ -type f -name 'coverage*.info' -print0)

    local args=()
    for i in "${files[@]}"; do
        args+=('-a')
        args+=("$i")
    done
    lcov "${args[@]}" -o final.info
}

envsetup()
{
    export THREAD_VERSION

    if [[ ${OT_NODE_TYPE} == rcp* ]]; then
        export RADIO_DEVICE="${OT_BUILDDIR}/openthread-simulation-${THREAD_VERSION}/examples/apps/ncp/ot-rcp"
        export OT_CLI_PATH="${OT_BUILDDIR}/openthread-posix-${THREAD_VERSION}/src/posix/ot-cli"

        if [[ ${THREAD_VERSION} == "1.2" ]]; then
            export RADIO_DEVICE_1_1="${OT_BUILDDIR}/openthread-simulation-1.1/examples/apps/ncp/ot-rcp"
            export OT_CLI_PATH_1_1="${OT_BUILDDIR}/openthread-posix-1.1/src/posix/ot-cli"
            export OT_CLI_PATH_1_2_BBR="${OT_BUILDDIR}/openthread-posix-1.2-bbr/src/posix/ot-cli"
        fi
    fi

    export OT_SIMULATION_APPS="${OT_BUILDDIR}/openthread-simulation-${THREAD_VERSION}/examples/apps"
    export OT_POSIX_APPS="${OT_BUILDDIR}/openthread-posix-${THREAD_VERSION}/src/posix"

    if [[ ! ${VIRTUAL_TIME+x} ]]; then
        # All expect tests only works in real time mode.
        VIRTUAL_TIME=1
        for arg in "$@"; do
            if [[ $arg == expect ]]; then
                VIRTUAL_TIME=0
                break
            fi
        done
    fi

    readonly VIRTUAL_TIME
    export OT_NODE_TYPE VIRTUAL_TIME

    # CMake always works in verbose mode if VERBOSE exists in environments.
    if [[ ${VERBOSE} == 1 ]]; then
        export VERBOSE
    else
        export -n VERBOSE
    fi

    if [[ ${OT_OPTIONS+x} ]]; then
        read -r -a ot_extra_options <<<"${OT_OPTIONS}"
    else
        ot_extra_options=()
    fi
}

main()
{
    envsetup "$@"

    if [[ -z ${1:-} ]]; then
        print_usage 1
    fi

    [[ ${VIRTUAL_TIME} == 1 ]] && echo "Using virtual time" || echo "Using real time"
    [[ ${THREAD_VERSION} == "1.2" ]] && echo "Using Thread 1.2 stack" || echo "Using Thread 1.1 stack"

    while [[ $# != 0 ]]; do
        case "$1" in
            clean)
                do_clean
                ;;
            build)
                do_build
                ;;
            cert)
                shift
                do_cert "$@"
                shift $#
                ;;
            cert_suite)
                shift
                do_cert_suite "$@"
                shift $#
                ;;
            get_thread_wireshark)
                do_get_thread_wireshark
                ;;
            build_otbr_docker)
                do_build_otbr_docker
                ;;
            pktverify)
                shift
                do_pktverify "$1"
                ;;
            unit)
                do_unit
                ;;
            help)
                print_usage
                ;;
            package)
                ./script/package "${ot_extra_options[@]}"
                ;;
            expect)
                shift
                do_expect "$@"
                ;;
            prepare_coredump_upload)
                do_prepare_coredump_upload
                ;;
            check_crash)
                do_check_crash
                ;;
            generate_coverage)
                shift
                do_generate_coverage "$1"
                ;;
            combine_coverage)
                do_combine_coverage
                ;;
            *)
                echo
                echo -e "${OT_COLOR_FAIL}Warning:${OT_COLOR_NONE} Ignoring: '$1'"
                ;;
        esac
        shift
    done
}

main "$@"