#!/bin/bash -e

set -E
set -o pipefail
set -x

WORK_DIR="$PWD/.verify-$RANDOM"
MINIO_CONFIG_DIR="$WORK_DIR/.minio"
MINIO_OLD=( "$PWD/minio.RELEASE.2020-10-28T08-16-50Z" --config-dir "$MINIO_CONFIG_DIR" server )
MINIO=( "$PWD/minio" --config-dir "$MINIO_CONFIG_DIR" server )

if [ ! -x "$PWD/minio" ]; then
    echo "minio executable binary not found in current directory"
    exit 1
fi

function download_old_release() {
    if [ ! -f minio.RELEASE.2020-10-28T08-16-50Z ]; then
	curl --silent -O https://dl.minio.io/server/minio/release/linux-amd64/archive/minio.RELEASE.2020-10-28T08-16-50Z
	chmod a+x minio.RELEASE.2020-10-28T08-16-50Z
    fi
}

function verify_rewrite() {
    start_port=$1

    export MINIO_ACCESS_KEY=minio
    export MINIO_SECRET_KEY=minio123
    export MC_HOST_minio="http://minio:minio123@127.0.0.1:${start_port}/"
    unset MINIO_KMS_AUTO_ENCRYPTION # do not auto-encrypt objects
    export MINIO_CI_CD=1

    MC_BUILD_DIR="mc-$RANDOM"
    if ! git clone --quiet https://github.com/minio/mc "$MC_BUILD_DIR"; then
	echo "failed to download https://github.com/minio/mc"
	purge "${MC_BUILD_DIR}"
	exit 1
    fi

    (cd "${MC_BUILD_DIR}" && go build -o "$WORK_DIR/mc")

    # remove mc source.
    purge "${MC_BUILD_DIR}"

    "${MINIO_OLD[@]}" --address ":$start_port" "${WORK_DIR}/xl{1...16}" > "${WORK_DIR}/server1.log" 2>&1 &
    pid=$!
    disown $pid
    sleep 10

    if ! ps -p ${pid} 1>&2 >/dev/null; then
	echo "server1 log:"
	cat "${WORK_DIR}/server1.log"
	echo "FAILED"
	purge "$WORK_DIR"
	exit 1
    fi

    "${WORK_DIR}/mc" mb minio/healing-rewrite-bucket --quiet --with-lock
    "${WORK_DIR}/mc" cp \
		     buildscripts/verify-build.sh \
		     minio/healing-rewrite-bucket/ \
		     --disable-multipart --quiet

    "${WORK_DIR}/mc" cp \
		     buildscripts/verify-build.sh \
		     minio/healing-rewrite-bucket/ \
		     --disable-multipart --quiet

    "${WORK_DIR}/mc" cp \
		     buildscripts/verify-build.sh \
		     minio/healing-rewrite-bucket/ \
		     --disable-multipart --quiet

    kill ${pid}
    sleep 3

    "${MINIO[@]}" --address ":$start_port" "${WORK_DIR}/xl{1...16}" > "${WORK_DIR}/server1.log" 2>&1 &
    pid=$!
    disown $pid
    sleep 10

    if ! ps -p ${pid} 1>&2 >/dev/null; then
	echo "server1 log:"
	cat "${WORK_DIR}/server1.log"
	echo "FAILED"
	purge "$WORK_DIR"
	exit 1
    fi

    go build ./docs/debugging/s3-check-md5/
    if ! ./s3-check-md5 \
	 -debug \
	 -versions \
	 -access-key minio \
	 -secret-key minio123 \
	 -endpoint http://127.0.0.1:${start_port}/ 2>&1 | grep INTACT; then
	echo "server1 log:"
	cat "${WORK_DIR}/server1.log"
	echo "FAILED"
	mkdir -p inspects
	(cd inspects; "${WORK_DIR}/mc" admin inspect minio/healing-rewrite-bucket/verify-build.sh/**)

	"${WORK_DIR}/mc" mb play/inspects
	"${WORK_DIR}/mc" mirror inspects play/inspects

	purge "$WORK_DIR"
	exit 1
    fi

    go run ./buildscripts/heal-manual.go "127.0.0.1:${start_port}" "minio" "minio123"
    sleep 1

    if ! ./s3-check-md5 \
	 -debug \
	 -versions \
	 -access-key minio \
	 -secret-key minio123 \
	 -endpoint http://127.0.0.1:${start_port}/ 2>&1 | grep INTACT; then
	echo "server1 log:"
	cat "${WORK_DIR}/server1.log"
	echo "FAILED"
	mkdir -p inspects
	(cd inspects; "${WORK_DIR}/mc" admin inspect minio/healing-rewrite-bucket/verify-build.sh/**)

	"${WORK_DIR}/mc" mb play/inspects
	"${WORK_DIR}/mc" mirror inspects play/inspects

	purge "$WORK_DIR"
	exit 1
    fi

    kill ${pid}
}

function main() {
    download_old_release

    start_port=$(shuf -i 10000-65000 -n 1)

    verify_rewrite ${start_port}
}

function purge()
{
    rm -rf "$1"
}

( main "$@" )
rv=$?
purge "$WORK_DIR"
exit "$rv"
