#!/bin/bash
#
# SPDX-License-Identifier: Apache-2.0
#
# Copyright (C) 2019 Intel Corporation
#

set -e
export SRC_BUILD_ENVIRONMENT="stx"
export ARCH="x86_64"
export PATH="${MY_REPO}/build-tools:${PATH}"

EXPORTS="$MY_WORKSPACE/export/mirrors/"
DISTRO="CentOS"
HEAD_FILE="${MY_REPO_ROOT_DIR}/.repo/projects/cgcs-root.git/HEAD"
STAT="$(stat -c %Y ${HEAD_FILE})"
TIMESTAMP=$(date -d @$(stat -c %Y ${HEAD_FILE}) +%Y-%m-%dT%H:%M:%S)
STD_PKG_DIR="${MY_WORKSPACE}/std/rpmbuild/RPMS"
RT_PKG_DIR="${MY_WORKSPACE}/rt/rpmbuild/RPMS"
RELEASE="$SRC_BUILD_ENVIRONMENT"
CACHE_DIR="$EXPORTS/$DISTRO/$RELEASE"
DEST_RPM_ROOT="${CACHE_DIR}/${ARCH}"
DEST_SRPM_ROOT="${CACHE_DIR}/Source"
DEST_RPM_ROOT_NEW="${DEST_RPM_ROOT}.new"
DEST_SRPM_ROOT_NEW="${DEST_SRPM_ROOT}.new"
DEST_RPM_ROOT_OLD="${DEST_RPM_ROOT}.old"
DEST_SRPM_ROOT_OLD="${DEST_SRPM_ROOT}.old"
DEST_RPM="${DEST_RPM_ROOT_NEW}/Packages"
DEST_SRPM="${DEST_SRPM_ROOT_NEW}/SPackages"
DEST_RPM_REPODATA="${DEST_RPM_ROOT_NEW}/repodata"
DEST_SRPM_REPODATA="${DEST_SRPM_ROOT_NEW}/repodata"
LOCAL_REPO_DIR="${MY_REPO}/local-repo"
LOCAL_CACHE_DIR="${LOCAL_REPO_DIR}/dependancy-cache"
LOCAL_CACHE_ORIGIN="${LOCAL_REPO_DIR}/origin"
ORIGIN="/import/mirrors/CentOS/${SRC_BUILD_ENVIRONMENT}/CentOS"

CREATEREPO=$(which createrepo_c)
if [ $? -ne 0 ]; then
    CREATEREPO="createrepo"
fi

# Create directories
for d in "$DEST_RPM" "$DEST_SRPM" "$LOCAL_CACHE_DIR"; do
    if [ ! -d "$d" ]; then
        mkdir -p "$d"
    fi
done

if [ ! -e "$LOCAL_CACHE_ORIGIN" ]; then
    echo "$ORIGIN" > $LOCAL_CACHE_ORIGIN
    ORIGIN_DIR="$ORIGIN"
else
    ORIGIN_DIR=$(grep -v '^#'  $LOCAL_CACHE_ORIGIN | head -n 1)
fi

if [ ! -d "$ORIGIN_DIR" ]; then
    echo "ERROR: directory not found '$ORIGIN_DIR'"
    exit -1
fi

# copy standard and rt build of binary packages
for f in $(find "$RT_PKG_DIR" "$STD_PKG_DIR" -name '*.rpm' \
    | grep -v '[.]src[.]rpm'); do
    ff="$(basename $f)"
    echo "$ff"
    cp "$f" "$DEST_RPM"
    touch "${DEST_RPM}/${ff}" --date="$TIMESTAMP"
done

# Make a repo out of it
( cd "$DEST_RPM_ROOT_NEW"; $CREATEREPO $PWD; exit $? )

# copy standard and rt build of src.rpm packages
for f in $(find "$STD_PKG_DIR" "$RT_PKG_DIR" -name '*.src.rpm'); do
    ff="$(basename $f)"
    echo "$ff"
    cp "$f" "$DEST_SRPM"
    touch "${DEST_SRPM}/${ff}" --date="$TIMESTAMP"
done

# Make a repo out of it
( cd  "$DEST_SRPM_ROOT_NEW"; $CREATEREPO $PWD; exit $? )

date > "${DEST_SRPM_ROOT_NEW}/last_updated"
date > "${DEST_RPM_ROOT_NEW}/last_updated"

# Rotate directories ... current becomes old, and new becomes current
if [ -d $DEST_RPM_ROOT ]; then
    mv "$DEST_RPM_ROOT" "$DEST_RPM_ROOT_OLD"
fi

mv "$DEST_RPM_ROOT_NEW" "$DEST_RPM_ROOT"
rm -rf "$DEST_RPM_ROOT_OLD"

if [ -d "$DEST_SRPM_ROOT" ]; then
    mv "$DEST_SRPM_ROOT" "$DEST_SRPM_ROOT_OLD"
fi

mv "$DEST_SRPM_ROOT_NEW" "$DEST_SRPM_ROOT"
rm -rf "$DEST_SRPM_ROOT_OLD"

# Update symlinks in local-repo

for d in $(find "$ORIGIN_DIR" -type d | tail -n +2); do
    RELATIVE_DIR=$(echo $d | sed "s#^$ORIGIN_DIR/##")
    if [ -d "${LOCAL_REPO_DIR}/${RELATIVE_DIR}" ]; then
        rm -rf "${LOCAL_REPO_DIR}/${RELATIVE_DIR}/*"
    fi
    echo "mkdir -p $RELATIVE_DIR"
    mkdir -p "${LOCAL_REPO_DIR}/${RELATIVE_DIR}"
done

for d in $(find "$ORIGIN_DIR" -type d | tail -n +2); do
    for f in $(find $d -maxdepth 1 -type f); do
        RELATIVE_FILE=$(echo $f | sed "s#^$ORIGIN_DIR/##")
        if [ -e "${LOCAL_REPO_DIR}/${RELATIVE_FILE}" ]; then
            rm -f "${LOCAL_REPO_DIR}/${RELATIVE_FILE}"
        fi
        ln -s "$f" "${LOCAL_REPO_DIR}/${RELATIVE_FILE}"
    done
done

for d in $(find -L "$LOCAL_REPO_DIR" -type d -name repodata); do
    pushd  "${d}/.."
    rm -rf repodata
    if [ -f "comps.xml" ]; then
        "$CREATEREPO" -g comps.xml "$PWD"
    else
        "$CREATEREPO" "$PWD"
    fi
    popd
done

# Recreate repodata
cd "$LOCAL_REPO_DIR"

for d in $(find -L . -type d -name repodata); do
    pushd "${d}/.."
    for c in $(ls -1 repodata/*comps*xml); do
        mv -f "${c}" comps.xml
    done
    if [ -d "repodata" ]; then
        rm -rf repodata
    fi
    if [ -f "comps.xml" ]; then
        $CREATEREPO -g comps.xml "$PWD"
    else
        $CREATEREPO "$PWD"
    fi
    popd
done

# Update the dependancy_cache under local-repo
create_dependancy_cache.py --cache_dir "${LOCAL_CACHE_DIR}"