##
## Obtain various platform information
##

OS=`uname`
if [ "${OS}" != "Linux" ] ; then
	printf "'$0' is ONLY available on '${OS}'!\n"
	exit 255
fi

if [ -f "/etc/redhat-release" ] ; then
	DISTRIBUTION=`cat /etc/redhat-release | cut -c1-7`
	DIST_VERSION=`cat /etc/redhat-release | tr -d [:alpha:][:blank:][\(\)]`
	if [ "${DISTRIBUTION}" = "Fedora " ] ; then
		MESSAGE="[built for Fedora ${DIST_VERSION}]"
	elif [ "${DISTRIBUTION}" = "Red Hat" ] ; then
		MESSAGE="[built for Red Hat ${DIST_VERSION}]"
	else
		printf "'$0' is ONLY available on 'Fedora' or 'Red Hat' "
		printf "distributions!\n"
		exit 255
	fi
else
	printf "'$0' is ONLY available on 'Fedora' or 'Red Hat' distributions!\n"
	exit 255
fi


##
## Establish various shared variables
##

PKI_DIR="pki"
export PKI_DIR

PKI_BASE_DIR="${PKI_DIR}/base"
export PKI_BASE_DIR

PKI_DOGTAG_DIR="${PKI_DIR}/dogtag"
export PKI_DOGTAG_DIR

PKI_REDHAT_DIR="${PKI_DIR}/redhat"
export PKI_REDHAT_DIR

PKI_FILE_LIST="CMakeLists.txt COPYING CPackConfig.cmake ConfigureChecks.cmake DefineOptions.cmake README cmake_uninstall.cmake.in config.h.cmake pylint-build-scan.py dogtag.pylintrc tox.ini"
export PKI_FILE_LIST

PKI_CMAKE_DIR="cmake"
export PKI_CMAKE_DIR

PKI_BASE_MANIFEST="CMakeLists.txt"
export PKI_BASE_MANIFEST

PKI_DOGTAG_MANIFEST="CMakeLists.txt"
export PKI_DOGTAG_MANIFEST

PKI_REDHAT_MANIFEST="CMakeLists.txt"
export PKI_REDHAT_MANIFEST

RHEL="/rhel/"

##
## Usage statement
##

Usage()
{
	printf "\n"
	printf "Usage:  $0 [options] <target>\n\n"
	printf "        where <target> is one of the following:\n\n"
	printf "            srpm         - copies a spec file from local source,\n"
	printf "                           generates a tarball from local source,\n"
	printf "                           copies any relevant patches from the\n"
	printf "                           local 'patches' directory, and\n"
	printf "                           produces an SRPM\n"
	printf "                           [suitable for use by 'mock']\n\n"
	printf "            rpms         - copies a spec file from local source,\n"
	printf "                           generates a tarball from local source,\n"
	printf "                           copies any relevant patches from the\n"
	printf "                           local 'patches' directory, and\n"
	printf "                           produces an SRPM and one or more RPMS\n"
	printf "                           ${MESSAGE}\n\n"
	printf "            hybrid_srpm  - copies a spec file from local source,\n"
	printf "                           generates a tarball from local source,\n"
	printf "                           fetches any relevant patches from the\n"
	printf "                           spec's URL, and\n"
	printf "                           produces an SRPM\n"
	printf "                           [suitable for use by 'mock']\n\n"
	printf "            hybrid_rpms  - copies a spec file from local source,\n"
	printf "                           generates a tarball from local source,\n"
	printf "                           fetches any relevant patches from the\n"
	printf "                           spec's URL, and\n"
	printf "                           produces an SRPM and one or more RPMS\n"
	printf "                           ${MESSAGE}\n\n"
	printf "            patched_srpm - copies a spec file from local source,\n"
	printf "                           fetches a non-RHEL tarball from the spec's URL,\n"
	printf "                           fetches any relevant patches from the\n"
	printf "                           spec's URL, and\n"
	printf "                           produces an SRPM\n"
	printf "                           [suitable for use by 'mock']\n\n"
	printf "            patched_rpms - copies a spec file from local source,\n"
	printf "                           fetches a non-RHEL tarball from the spec's URL,\n"
	printf "                           fetches any relevant patches from the\n"
	printf "                           spec's URL, and\n"
	printf "                           produces an SRPM and one or more RPMS\n"
	printf "                           ${MESSAGE}\n\n"
	printf "            patched_rhel_srpm - copies a spec file from local source,\n"
	printf "                           fetches a RHEL tarball from the spec's URL,\n"
	printf "                           fetches any relevant patches from the\n"
	printf "                           spec's URL, and\n"
	printf "                           produces an SRPM\n"
	printf "                           [suitable for use by 'mock']\n\n"
	printf "            patched_rhel_rpms - copies a spec file from local source,\n"
	printf "                           fetches a RHEL tarball from the spec's URL,\n"
	printf "                           fetches any relevant patches from the\n"
	printf "                           spec's URL, and\n"
	printf "                           produces an SRPM and one or more RPMS\n"
	printf "                           ${MESSAGE}\n\n"
	printf "Options:\n"
	printf "  --without-javadoc        do not build Javadoc RPMS\n\n"
	printf "  --without-server         do not build server RPMS\n\n"
	printf "  --createrepo=<repository_config> create a \n"
	printf "                           repository with the rpms built."
	printf "                           Provide the configuration file with the details. \n\n"
}


##
## Copy Specified Patches to SOURCES
##
Fetch_Patch_Files()
{
	if [ $# -ne 2 ] ; then
		Usage
		exit 255
	fi

	SPECFILE=$1
	TARGET_DIR=$2

	if [ ! -f ${SPECFILE} ] ; then
		printf "ERROR:  '${SPECFILE}' is missing!\n\n"
		Usage
		exit 255
	elif [ ! -d ${TARGET_DIR} ] ; then
		printf "ERROR:  '${TARGET_DIR}' does NOT exist!\n\n"
		Usage
		exit 255
	fi

	component_name_marker="Name"
	component_version_marker="Version"
	component_release_marker="Release"
	component_source_marker="Source"
	component_patch_marker="Patch"

	component_name=""
	component_version=""
	component_release=""
	component_source=""
	component_url=""
	component_patch=""

	exec < ${SPECFILE}
	while read line; do
		entry=`echo $line | cut -d: -f 1`
		if [ "${entry:0:4}" = "${component_name_marker}" ] ; then
			component_name=`echo $line | cut -d' ' -f 2`
		elif [ "${entry:0:7}" = "${component_version_marker}" ] ; then
			component_version=`echo $line | cut -d' ' -f 2`
		elif [ "${entry:0:7}" = "${component_release_marker}" ] ; then
			data=`echo $line | cut -d'%' -f 1`
			component_release=`echo $data | cut -d' ' -f 2`
		elif [ "${entry:0:6}" = "${component_source_marker}" ] ; then
			value=`echo $line | cut -d' ' -f 2`
			component_source=`echo $value | sed -e "s/\%{name}/${component_name}/g" -e "s/\%{version}/${component_version}/g" -e "s/\%{release}/${component_release}/g" -e "s/\%{?prerel}//g"`
			if [[ "$component_source" =~ "$RHEL" ]] ; then
				if [ ${FETCH_RHEL_PATCH_FILES} -ne 1 ] ; then
					# non-RHEL Source patch files are desired
					continue;
				fi
			else
				if [ ${FETCH_RHEL_PATCH_FILES} -eq 1 ] ; then
					# RHEL Source patch files are desired
					continue;
				fi
			fi
			component_url=`dirname ${component_source}`
		elif [ "${entry:0:5}" = "${component_patch_marker}" ] ; then
            if [ ${component_url} != "" ] ; then
				value=`echo $line | cut -d' ' -f 2`
				component_patch=${component_url}"/"`echo $value | sed -e "s/\%{name}/${component_name}/g" -e "s/\%{version}/${component_version}/g"`
				wget -q -O ${TARGET_DIR}/`basename ${component_patch}` ${component_patch}
				if [ $? -ne 0 ] ; then
					printf "ERROR:  Failed to download '${component_patch}'!\n\n"
					Usage
					exit 255
				elif [ ! -f ${TARGET_DIR}/`basename ${component_patch}` ] ; then
					printf "ERROR:  Failed to save '${TARGET_DIR}/`basename ${component_patch}`'!\n\n"
					Usage
					exit 255
				fi
			else
				printf "ERROR:  '${component_source_marker}' MUST be specified PRIOR to '${component_patch_marker}'!\n\n"
				Usage
				exit 255
			fi
		fi
	done
}


##
## Copy Specified Source Tarball to SOURCES
##
Fetch_Source_Tarball()
{
	if [ $# -ne 2 ] ; then
		Usage
		exit 255
	fi

	SPECFILE=$1
	TARGET_DIR=$2

	if [ ! -f ${SPECFILE} ] ; then
		printf "ERROR:  '${SPECFILE}' is missing!\n\n"
		Usage
		exit 255
	elif [ ! -d ${TARGET_DIR} ] ; then
		printf "ERROR:  '${TARGET_DIR}' does NOT exist!\n\n"
		Usage
		exit 255
	fi

	component_name_marker="Name"
	component_version_marker="Version"
	component_release_marker="Release"
	component_tarball_marker="Source"

	component_name=""
	component_version=""
	component_release=""
	component_tarball=""

	exec < ${SPECFILE}
	while read line; do
		entry=`echo $line | cut -d: -f 1`
		if [ "${entry:0:4}" = "${component_name_marker}" ] ; then
			component_name=`echo $line | cut -d' ' -f 2`
		elif [ "${entry:0:7}" = "${component_version_marker}" ] ; then
			component_version=`echo $line | cut -d' ' -f 2`
		elif [ "${entry:0:7}" = "${component_release_marker}" ] ; then
			data=`echo $line | cut -d'%' -f 1`
			component_release=`echo $data | cut -d' ' -f 2`
		elif [ "${entry:0:6}" = "${component_tarball_marker}" ] ; then
			value=`echo $line | cut -d' ' -f 2`
			component_tarball=`echo $value | sed -e "s/\%{name}/${component_name}/g" -e "s/\%{version}/${component_version}/g" -e "s/\%{release}/${component_release}/g" -e "s/\%{?prerel}//g"`
			if [[ "${component_tarball}" =~ "$RHEL" ]] ; then
				if [ ${FETCH_RHEL_SOURCE_TARBALL} -ne 1 ] ; then
					# non-RHEL Source URL is desired
					continue;
				fi
			else
				if [ ${FETCH_RHEL_SOURCE_TARBALL} -eq 1 ] ; then
					# RHEL Source URL is desired
					continue;
				fi
			fi
			wget -q -O ${TARGET_DIR}/`basename ${component_tarball}` ${component_tarball}
			if [ $? -ne 0 ] ; then
				printf "ERROR:  Failed to download '${component_tarball}'!\n\n"
				Usage
				exit 255
			elif [ ! -f ${TARGET_DIR}/`basename ${component_tarball}` ] ; then
				printf "ERROR:  Failed to save '${TARGET_DIR}/`basename ${component_tarball}`'!\n\n"
				Usage
				exit 255
			fi
		fi
	done
}

###
#   Create repository using the details in the config file ###
#   Function parameters - $1 - repository file path.
###

Create_repo_after_build()
{
	if [ $# -eq 0 ]; then
             echo "No repository configuration provided. Cannot create a repo."
             exit -1
	fi

	if [ ! -f $1 ]; then
             echo "$1 does not exist."
             exit -1
	fi

	. $1

	### Remove leading and trailing whitespaces ###
	repo_location=`echo $REPOSITORY_LOCATION |sed -e 's/^ *//g' -e 's/ *$//g'`
	destination=`echo $REPOSITORY_HOST|sed -e 's/^ *//g' -e 's/ *$//g'`
	uname=`echo $USERNAME |sed -e 's/^ *//g' -e 's/ *$//g'`
	pwd=`echo $PASSWORD |sed -e 's/^ *//g' -e 's/ *$//g'`

	if [ "$repo_location" != "" ] ; then
                if [ "$destination" != "" ] ; then
                        createrepo ./RPMS/noarch/
                        createrepo ./RPMS/x86_64/
                        createrepo ./SRPMS/
                        if [ $uname == "" ] ; then
                              echo "No username provided in the configuration file."
                              echo "Enter the username:"
                              read $uname
                        fi
                        if [ $pwd == "" ] ; then
                              echo "No password provided in the configuration file."
                              echo "Enter the password:"
                              read -s $pwd
                        fi
                        url="$uname@$destination:$repo_location"
                        echo $url
                        ./scp_the_repo.exp "RPMS/" $url $PASSWORD
                        ./scp_the_repo.exp "SRPMS/" $url $PASSWORD
                        if [ $? -ne 0 ]; then
                             echo "Cannot copy the repositories to $destination\n"
                             exit -1
                        fi
                        echo "Copied the repo to the location on the destination"
                        exit 0
                fi
                if [ ! -e $repo_location ] ; then
                       mkdir -p $repo_location
                fi
                cp -r RPMS SRPMS $repo_location
                createrepo $REPOSITORY_LOCATION/RPMS/noarch/
                createrepo $REPOSITORY_LOCATION/RPMS/x86_64/
                createrepo $REPOSITORY_LOCATION/SRPMS/
                echo "Build repository created at $repo_location."
                exit 0
	fi
	echo "Cannot create repository. $repo_location has empty value in repository.cfg"
}

##
## Check for command line argument validity
##

GETOPT=`getopt -o '' -l without-javadoc,without-server,work-dir:,createrepo: -n "$0" -- "$@"`

if [ $? != 0 ] ; then
    Usage
    exit 255
fi

eval set -- "$GETOPT"

while true ; do
    case "$1" in
        --without-javadoc) WITHOUT_JAVADOCS="--without javadoc" ; shift ;;
        --without-server) WITHOUT_SERVER="--without server" ; shift ;;
        --work-dir) WORK_DIR="$2" ; shift 2 ;;
        --createrepo) CREATEREPO="Y" ; REPO_CFG_FILE="$2" ; shift 2 ;;
        --) shift ; break ;;
        *) echo "$0: unrecognized option '$1'" 1>&2 ; exit 255 ;;
    esac
done

if [ $# -ne 1 ] ; then
	Usage
	exit 255
fi

OPTIONS="--define \"_topdir \`pwd\`\" $WITHOUT_JAVADOCS $WITHOUT_SERVER"

if	[ $1 = "srpm" ] ; then
	OPTIONS="$OPTIONS -bs"
	FETCH_SOURCE_TARBALL=0
	FETCH_PATCH_FILES=0
elif [ $1 = "hybrid_srpm" ] ; then
	OPTIONS="$OPTIONS -bs"
	FETCH_SOURCE_TARBALL=0
	FETCH_PATCH_FILES=1
elif [ $1 = "patched_srpm" ] ; then
	OPTIONS="$OPTIONS -bs"
	FETCH_SOURCE_TARBALL=1
	FETCH_RHEL_SOURCE_TARBALL=0
	FETCH_PATCH_FILES=1
	FETCH_RHEL_PATCH_FILES=0
elif [ $1 = "patched_rhel_srpm" ] ; then
	OPTIONS="$OPTIONS -bs"
	FETCH_SOURCE_TARBALL=1
	FETCH_RHEL_SOURCE_TARBALL=1
	FETCH_PATCH_FILES=1
	FETCH_RHEL_PATCH_FILES=1
elif [ $1 = "rpms" ] ; then
	OPTIONS="$OPTIONS -ba"
	FETCH_SOURCE_TARBALL=0
	FETCH_PATCH_FILES=0
elif [ $1 = "hybrid_rpms" ] ; then
	OPTIONS="$OPTIONS -ba"
	FETCH_SOURCE_TARBALL=0
	FETCH_PATCH_FILES=1
elif [ $1 = "patched_rpms" ] ; then
	OPTIONS="$OPTIONS -ba"
	FETCH_SOURCE_TARBALL=1
	FETCH_RHEL_SOURCE_TARBALL=0
	FETCH_PATCH_FILES=1
	FETCH_RHEL_PATCH_FILES=0
elif [ $1 = "patched_rhel_rpms" ] ; then
	OPTIONS="$OPTIONS -ba"
	FETCH_SOURCE_TARBALL=1
	FETCH_RHEL_SOURCE_TARBALL=1
	FETCH_PATCH_FILES=1
	FETCH_RHEL_PATCH_FILES=1
else
	Usage
	exit 255
fi

RPMBUILD_CMD="rpmbuild $OPTIONS"
export RPMBUILD_CMD