#!/bin/bash
#
# managed by salt - do not edit
#
# Copyright (C) 2013-2014, SUSE Linux Products GmbH
# Copyright (C) 2015-2016, SUSE Linux GmbH
# Author: Lars Vogdt
#
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * 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.
#
# * Neither the name of the Novell 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 OWNER 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.
#

BASEDIR="$HOME"
DESTDIR="/srv/www/vhosts/doc.opensuse.org/release-notes/"
RELEASENOTES_DATA="$BASEDIR/etc/releasenotes"
RELNOTESDIR="$BASEDIR/release-notes"
LOGFILE="$BASEDIR/var/log/$(basename $0).log"
DO_ECHO=""
VERBOSE=""
UNRPM='/usr/bin/unrpm'
UNPACK_TEMPDIR='/tmp'
TEMPDIR=$(mktemp -d /tmp/update_release_notes-XXXXXX)

cleanup_and_exit() {
    local exitcode="$1"
    rm -rf "$TEMPDIR"
    exit $exitcode
}

usage() {
    echo
    echo "Usage: $(basename $0) [-t][-v]"
    echo "       -t : just test, do nothing"
    echo "       -v : be verbose"
    echo
    cleanup_and_exit $1
}

LOG(){
    LOG_DATE=`date "+%b %d %H:%M:%S"`
    HOST=`hostname`
    echo "$LOG_DATE $HOST : $1" >> $LOGFILE
    if [ "$VERBOSE" = "yes" ]; then
        echo "$1"
    fi
}

get_package_from_obs() {
    local server="$1"
    local localdir="$2"
    local url=$(echo $3 | sed "s|:/|:|g")
    local packagename="$4"
    local archs="$5"
    local attempt=$6 || local attempt=0
    attempt=$((attempt+1))
    if [ $attempt -gt 2 ]; then
        echo "Could not find a valid RPM at ${server}/build/$url/$arch/_repository/${packagename} after $attempt attempts - giving up." >&2
		LOG "Could not find a valid RPM at ${server}/build/$url/$arch/_repository/${packagename} after $attempt attempts - giving up"
        return
    fi
    for arch in $archs; do
        $DO_ECHO mkdir -p $VERBOSE "$localdir/$arch"
        $DO_ECHO curl -s -S $VERBOSE -o "$localdir/$arch"/${packagename}.rpm  "${server}/build/$url/$arch/_repository/${packagename}"
        FILETYPE=$(file --brief --mime "$localdir/$arch"/${packagename}.rpm)
        FOUND='no'
        case "$FILETYPE" in
            *application/x-rpm*)
                LOG "$localdir/$arch/${packagename}.rpm is a valid RPM - going forward"
                FOUND='yes'
            ;;
            *text/plain*)
                if [ "$VERBOSE" = "-v" ]; then
                    LOG "$localdir/$arch"/${packagename}.rpm has wrong mime - file content:"
                    cat "$localdir/$arch"/${packagename}.rpm" | tee "$LOGFILE"
                fi
            ;;
            *)
                LOG "$localdir/$arch/${packagename}.rpm has wrong/unknown mime type"
            ;;
         esac
         if [ "$FOUND" == "no" ]; then
             LOG "Did not find the wanted RPM at $url - trying different repos now"
             case "$url" in
                 *:Update/standard)
                     url=${url/:Update/}
                 ;;
             esac
             get_package_from_obs "$server" "$localdir" "$url" "$packagename" "$arch" $attempt
         fi
    done
}

output_package() {
    PACKAGE="$1"
    DESTINATION="$2"
    case $DESTINATION in
        "$RELNOTESDIR"/*)
        ;;
        *)
        echo "ERROR: dest is $DESTINATION" >&2
		LOG "ERROR: dest is $DESTINATION"
        return
        ;;
    esac
    TMPDIR=$(mktemp -d $TEMPDIR/output_package-XXXXXX)
    test -d "$TMPDIR" || return
    pushd "$TMPDIR" 1>/dev/null
    $DO_ECHO $UNRPM "$PACKAGE" 1>/dev/null 2>&1
    PACKNAME=$(rpm -qp --nosignature --nodigest --qf "%{NAME}.rpm" "$PACKAGE")
    popd 1>/dev/null
    $DO_ECHO rm -rf $VERBOSE "$DESTINATION"
    $DO_ECHO mkdir -p "$DESTINATION"
    $DO_ECHO cp -a $VERBOSE "$PACKAGE" "$DESTINATION/$PACKNAME"
    $DO_ECHO cp -a $VERBOSE $TMPDIR/usr/share/doc/release-notes/*.{html,rtf,txt} "$DESTINATION"/ 2>/dev/null
    $DO_ECHO cp -a $VERBOSE $TMPDIR/usr/share/doc/release-notes/*/*.{html,rtf,txt} "$DESTINATION"/ 2>/dev/null
    for dir in $TMPDIR/usr/share/doc/release-notes/*/release-notes-static ; do
	    test -d "$dir" || continue
	    test -L "$dir/index.html" -a -f "$dir/index.html" || continue
	    $DO_ECHO cp -a $VERBOSE "$dir"/* "$DESTINATION"/ 2>/dev/null
	    N=`readlink "$DESTINATION/index.html"`
	    pushd "$DESTINATION" >/dev/null 2>/dev/null
	    $DO_ECHO rm $VERBOSE index.html
	    $DO_ECHO cp -f $VERBOSE "$N" index.html
	    popd "$DESTINATION" >/dev/null 2>/dev/null
    done
    for i in "$DESTINATION"/*.html ; do
        test -L "$i" -a ! -f "$i" && $DO_ECHO rm $VERBOSE "$i"
    done
    pushd "$DESTINATION" 1>/dev/null
    for i in RELEASE-NOTES.*.html; do
	l="${i%.html}"
	l="${l##*.}"
	# use cp as symlinks do not work properly - see bnc #612554 for details (mod_proxy)
	$DO_ECHO cp -f $VERBOSE "$i" index.html."$l"
    done
    if [ ! -e index.html.en ]; then
	for i in en_US en_GB; do
	    if [ -e index.html.$i ]; then
		$DO_ECHO mv -f $VERBOSE index.html.$i index.html.en
		break
	    fi
	done
    fi
    popd 1>/dev/null
    if [ -d $TMPDIR/usr/share/doc/release-notes/*/static ]; then
        $DO_ECHO cp -a $VERBOSE "$TMPDIR"/usr/share/doc/release-notes/*/static "$DESTINATION"/
    fi
    rm -rf "$TMPDIR"
}

create_index_file() {
    DIRECTORY="$1"
    case $DIRECTORY in
        "$RELNOTESDIR"/*)
        ;;
        *)
        echo "ERROR: create_index_file directory is $DIRECTORY" >&2
        LOG "ERROR: create_index_file directory is $DIRECTORY"
        return
        ;;
    esac
    test -d "$DIRECTORY" || return
    if [ -f "$DIRECTORY/index.html" ]; then
        LOG "WARNING: $DIRECTORY/index.html exists - skipping"
        return
    else
        LOG "Creating $DIRECTORY/index.html"
    fi
    cat "$RELNOTESDIR/header.html.tmpl" > "$DIRECTORY/index.html" || return
    echo "<h1>Directory Index Of $(basename $DIRECTORY)/</h1>" >> "$DIRECTORY/index.html"
    echo "<a href="../">Parent Directory</a><br />" >> "$DIRECTORY/index.html"
    echo "<ul>" >> "$DIRECTORY/index.html"
    for dir in $(find "$DIRECTORY" -maxdepth 1 -mindepth 1 -type d); do
        link=$(basename $dir);
        echo "<li><a href=\"$link\">$link</a></li>" >> "$DIRECTORY/index.html";
    done
    echo "</ul>" >> "$DIRECTORY/index.html"
    cat "$RELNOTESDIR/footer.html.tmpl" >> "$DIRECTORY/index.html"
}

trap 'echo' SIGHUP SIGINT SIGQUIT
trap 'cleanup_and_exit 1' SIGTRAP SIGBUS SIGKILL SIGPIPE SIGTERM
trap 'cleanup_and_exit 0' EXIT

while getopts 'htv' OPTION; do
    case $OPTION in
        h) usage 0
        ;;
        t) DO_ECHO="echo "
        ;;
        v) VERBOSE="-v"
        ;;
        *) usage 1
        ;;
    esac
done
shift $(( OPTIND - 1 ))

if [ ! -x $UNRPM ]; then
    echo "ERROR: $UNRPM not found or not executable" >&2
    LOG "ERROR: $UNRPM not found or not executable"
    cleanup_and_exit 1
fi

if [ ! -f "$RELEASENOTES_DATA" ]; then
    echo "ERROR: $RELEASENOTES_DATA not found" >&2
    LOG "ERROR: $RELEASENOTES_DATA not found"
    cleanup_and_exit 1
fi

mkdir -p $(dirname $LOGFILE) || { echo "ERROR: could not create $(dirname $LOGFILE); LOG "ERROR: could not create $(dirname $LOGFILE); }

while read line; do
    ISBS="no"
    if [[ "$line" == \#* ]]; then
        continue
    fi
    if [[ "$line" == "" ]]; then
        continue
    fi
    DISTVERSION=$(echo $line | cut -d "|" -f 1)
    PRODUKT_NAME=$(echo $line | cut -d "|" -f 2)
    PRODUKT_VERSION=$(echo $line | cut -d "|" -f 3)
    RELEASENOTES_NAME=$(echo $line | cut -d "|" -f 4)
    PRODUKT_ARCHS=$(echo $line | cut -d "|" -f 5)
    case "$DISTVERSION" in
        obs:*)
            OBSDIR="$(mktemp -d "${TEMPDIR}/get_releasenotes-XXXXXX")"
            DISTVERSION=$(echo ${DISTVERSION/obs:\/\//} | sed "s|:|:/|g")
            DISTURL=$(echo ${DISTVERSION/obs:\/\//})
            ISBS="yes"
            INSTANCE="https://build.opensuse.org/public"
            get_package_from_obs "$INSTANCE" "${OBSDIR}/${DISTVERSION}" "$DISTURL" "$RELEASENOTES_NAME" "$PRODUKT_ARCHS"
        ;;
	*)
            DISTVERSION="$DISTVERSION-"
        ;;
    esac
    LOG "going for $OBSDIR/$DISTVERSION $PRODUKT_NAME/$PRODUKT_VERSION $RELEASENOTES_NAME"
    $DO_ECHO mkdir -p "$RELNOTESDIR" || { echo "Could not create $RELNOTESDIR" >&2; cleanup_and_exit 1; }
    if [ "$ISBS" == "yes" ]; then
      # special handling for noarch packages
      RELNOTES_RPM_IS_NOARCH=$(echo "$OBSDIR/$DISTVERSION/"*/$RELEASENOTES_NAME*.rpm | grep noarch)
      for arch in $PRODUKT_ARCHS; do
            if [ -n "$RELNOTES_RPM_IS_NOARCH" ]; then
                repoarch="noarch"
            else
                repoarch="$arch"
            fi
            for relrpm in "$OBSDIR/$DISTVERSION/${repoarch}/"$RELEASENOTES_NAME*.rpm; do
                test -f "$relrpm" || continue
                RPM_NAME=$(rpm -qp --nosignature --nodigest --qf "%{NAME}" "$relrpm")
                if [ "$RPM_NAME" = "$RELEASENOTES_NAME" ]; then
                    CHECKED=$(rpm --checksig "$relrpm" | grep -vE "md5 gpg OK|pgp md5 OK")
                    test -n "$CHECKED" && { echo "ERROR: $relrpm not signed" >&2 ; LOG "ERROR: $relrpm not signed"; continue ; }
                    PRODUKT_ARCH=$arch
                    output_package "$relrpm" "$RELNOTESDIR/$arch/$PRODUKT_NAME/$PRODUKT_VERSION"
        #            create_index_file "$RELNOTESDIR/$BUILDMACHINETYPE/$PRODUKT_NAME"
                    if [ "$RELEASENOTES_NAME" != "release-notes" ] ; then
                        $DO_ECHO cp -a "$RELNOTESDIR/$arch/$PRODUKT_NAME/$PRODUKT_VERSION"/$RELEASENOTES_NAME*.rpm "$RELNOTESDIR/$arch/$PRODUKT_NAME/$PRODUKT_VERSION/release-notes.rpm"
                    fi
                else
                    continue
                fi
            done
      done
      date "+%Y-%m-%d %H:%M:%S" > "$RELNOTESDIR/.last_sync"
    else
      echo "Unknown DISTVERSION: $DISTVERSION - can currently handle \"obs://\" URLs only" >&2
      LOG "Unknown DISTVERSION: $DISTVERSION - can currently handle \"obs://\" URLs only"
      cleanup_and_exit 1
    fi
done < "$RELEASENOTES_DATA"

# Only after everything suceeds, we rsync the contents to /srv
rsync -arz --delete-after "$@" "$RELNOTESDIR/*" "$DESTDIR"