# Copyright (c) 2024 Cisco and/or its affiliates.
# Copyright (c) 2024 PANTHEON.tech and/or its affiliates.
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at:
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

set -exuo pipefail

# This library defines functions used mainly by "bootstrap" entry scripts.
# Generally, the functions assume "common.sh" library has been sourced already.

# Keep functions ordered alphabetically, please.

function gather_dpdk () {

    # Ensure latest DPDK archive is downloaded.
    #
    # Variables read:
    # - TEST_CODE - The test selection string from environment or argument.
    # Hardcoded:
    # - dpdk archive name to download if TEST_CODE is not time based.
    # Directories updated:
    # - ./ - Assumed ${DOWNLOAD_DIR}, dpdk-*.tar.xz is downloaded if not there.
    # Functions called:
    # - die - Print to stderr and exit, defined in common.sh

    set -exuo pipefail

    dpdk_repo="https://fast.dpdk.org/rel"
    # Use downloaded packages with specific version
    if [[ "${TEST_CODE}" == *"daily"* ]] || \
       [[ "${TEST_CODE}" == *"weekly"* ]] || \
       [[ "${TEST_CODE}" == *"timed"* ]];
    then
        echo "Downloading latest DPDK packages from repo..."
        # URL is not in quotes, calling command from variable keeps them.
        wget_command=("wget" "--no-check-certificate" "--compression=auto")
        wget_command+=("-nv" "-O" "-")
        wget_command+=("${dpdk_repo}")
        dpdk_stable_ver="$("${wget_command[@]}" | grep -v "2015"\
            | grep -Eo 'dpdk-[^\"]+xz' | tail -1)" || {
            die "Composite piped command failed."
        }
    else
        echo "Downloading DPDK package of specific version from repo ..."
        # Downloading DPDK version based on what VPP is using. Currently
        # it is not easy way to detect from VPP version automatically.
        dpdk_stable_ver="$(< "${CSIT_DIR}/DPDK_VPP_VER")".tar.xz || {
            die "Failed to read DPDK VPP version!"
        }
    fi
    # TODO: Use "wget -N" instead checking for file presence?
    if [[ ! -f "${dpdk_stable_ver}" ]]; then
        wget -nv --no-check-certificate "${dpdk_repo}/${dpdk_stable_ver}" || {
            die "Failed to get DPDK package from: ${dpdk_repo}"
        }
    fi
}