#!/bin/bash
#
# Copyright (c) 2021-2022 BUGSENG srl. All rights reserved.
# Copyright (c) 2022 Arm Limited. All rights reserved.
#
# SPDX-License-Identifier: BSD-3-Clause

# Stop immediately if any executed command has exit status different from 0.
set -ex

usage() {
    echo "Usage: analyze.sh CONF" 1>&2
    echo "  where CONF is the build configuration id passed to build.sh" 1>&2
}

if [ $# -ne 1 ]
then
    usage
    exit 1
fi

# Absolute path of the ECLAIR bin directory.
ECLAIR_BIN_DIR="/opt/bugseng/eclair/bin"

# Directory where this script resides: usually in a directory named "ECLAIR".
SCRIPT_DIR="$(cd "$(dirname "$0")" ; echo "${PWD}")"

export CROSS_COMPILE="/opt/gcc-arm-11.2-2022.02-x86_64-aarch64-none-elf/bin/aarch64-none-elf-"

PLAT="$1"

export CC_ALIASES="${CROSS_COMPILE}gcc"
export CXX_ALIASES="${CROSS_COMPILE}g++"
export LD_ALIASES="${CROSS_COMPILE}ld"
export AR_ALIASES="${CROSS_COMPILE}ar"
export AS_ALIASES="${CROSS_COMPILE}as"
export FILEMANIP_ALIASES="cp mv ${CROSS_COMPILE}objcopy"

# Identifies the particular build of the project.
export ECLAIR_PROJECT_NAME="TF_A_${PLAT}"
# All paths mentioned in ECLAIR reports that are below this directory
# will be presented as relative to ECLAIR_PROJECT_ROOT.
export ECLAIR_PROJECT_ROOT="${WORKSPACE}/trusted-firmware-a"


function do_analyze() {

    # ECLAIR binary data directory and workspace.
    export ECLAIR_DATA_DIR="${ECLAIR_OUTPUT_DIR}/.data"
    # ECLAIR workspace.
    export ECLAIR_WORKSPACE="${ECLAIR_DATA_DIR}/eclair_workspace"
    # Destination file for the ECLAIR diagnostics.
    export ECLAIR_DIAGNOSTICS_OUTPUT="${ECLAIR_OUTPUT_DIR}/DIAGNOSTICS.txt"

    # Erase and recreate the output directory and the data directory.
    rm -rf "${ECLAIR_OUTPUT_DIR}"
    mkdir -p "${ECLAIR_DATA_DIR}"

    (
      # Perform the build (from scratch) in an ECLAIR environment.
      "${ECLAIR_BIN_DIR}/eclair_env"                   \
          "-eval_file='${SCRIPT_DIR}/MISRA_C_2012_selection.ecl'" \
          -- "${SCRIPT_DIR}/build-tfa.sh" "${PLAT}"
    )

    # Create the project database.
    PROJECT_ECD="${ECLAIR_OUTPUT_DIR}/PROJECT.ecd"
    find "${ECLAIR_DATA_DIR}" -maxdepth 1 -name "FRAME.*.ecb" \
        | sort | xargs cat \
        | "${ECLAIR_BIN_DIR}/eclair_report" \
              "-create_db='${PROJECT_ECD}'" \
              -load=/dev/stdin


    function make_self_contained() {
        dir=$1
        mkdir -p $dir/lib

        cp -r /opt/bugseng/eclair-3.12.0/lib/html $dir/lib

        ${SCRIPT_DIR}/relativize_urls.py $dir
    }

    ${ECLAIR_BIN_DIR}/eclair_report -db=${PROJECT_ECD} \
        -summary_txt=${ECLAIR_OUTPUT_DIR}/../summary_txt \
        -full_txt=${ECLAIR_OUTPUT_DIR}/../full_txt \
        -full_html=${ECLAIR_OUTPUT_DIR}/../full_html

    # summary_txt contains just a single report file not present in full_txt, move it there and be done with it.
    mv ${ECLAIR_OUTPUT_DIR}/../summary_txt/by_service.txt ${ECLAIR_OUTPUT_DIR}/../full_txt/
    rm -rf ${ECLAIR_OUTPUT_DIR}/../summary_txt
    make_self_contained ${ECLAIR_OUTPUT_DIR}/../full_html

    # Create the Jenkins reports file.
    JENKINS_XML="${ECLAIR_OUTPUT_DIR}/../jenkins.xml"
    ${ECLAIR_BIN_DIR}/eclair_report -db=${PROJECT_ECD} -reports_jenkins=${JENKINS_XML}

}

# Directory where to put all ECLAIR output and temporary files.
ECLAIR_OUTPUT_DIR="${WORKSPACE}/ECLAIR/out"

do_analyze

ECLAIR_OUTPUT_DIR="${WORKSPACE}/ECLAIR_BASE/out"

(
    cd ${ECLAIR_PROJECT_ROOT}
    git checkout HEAD^
    git log --oneline -n5
)

do_analyze

diff -I '^Timestamp:' -x frames.txt -x files.txt -x explain.txt \
    -ur ${WORKSPACE}/ECLAIR_BASE/summary_txt/ ${WORKSPACE}/ECLAIR/summary_txt/ > ${WORKSPACE}/ECLAIR/summary_txt.diff || true


(
${ECLAIR_BIN_DIR}/eclair_report -diff_criteria=fingerprint -diff_full_txt=ECLAIR_BASE/out/PROJECT.ecd,ECLAIR/out/PROJECT.ecd
ls -l diff_output

eclair_report -db=ECLAIR_BASE/out/PROJECT.ecd -sel_tag_glob=new,diff,missing -full_html=resolved_issues_html
make_self_contained resolved_issues_html

eclair_report -db=ECLAIR/out/PROJECT.ecd -sel_tag_glob=new,diff,missing -full_html=new_issues_html
make_self_contained new_issues_html

xz ECLAIR_BASE/out/PROJECT.ecd ECLAIR/out/PROJECT.ecd
)

${SCRIPT_DIR}/eclair_diff_report.py diff_output > misra_delta.txt


cat <<EOF >index.html
<html>
<body>
<h1>MISRA Delta reports for the patch</h1>

<p>
Patch: <a href="${GERRIT_CHANGE_URL}/${GERRIT_PATCHSET_NUMBER}">${GERRIT_CHANGE_URL}/${GERRIT_PATCHSET_NUMBER}</a><br />
CI Build: <a href="${BUILD_URL}">${BUILD_URL}</a>
</p>

<li><a href="misra_delta.txt">Cumulative TXT report</a>
<li><a href="diff_output/">Per MISRA rule TXT reports</a>
<li><a href="new_issues_html/by_service.html#first_file/service&kind">New issues, groupped per file changed (HTML).</a>
<li><a href="resolved_issues_html/by_service.html#first_file/service&kind">Resolved issues, groupped per file changed (HTML).</a>
</body>
</html>
EOF