# This file is part of the src2pkg program:
# Copyright 2005-2008 Gilbert Ashley <amigo@ibilio.org>
# src2pkg is released under the GNU General Public License Version 2

# this function gets used for downloading build scripts, sources and extra sources
# by passing a URL to either an archive or *src2pkg script or as a member of EXTRA_SOURCES
download_url() {
	if ! [[ $DOWNLOADER ]] ; then
		if [[ $(which wget) ]] ; then
			DOWNLOADER=wget
		elif [[ $(which rsync) ]] ; then
			DOWNLOADER=rsync
		elif [[ $(which curl) ]] ; then
			DOWNLOADER=curl
		elif [[ $(which lynx) ]] ; then
			DOWNLOADER=lynx
		else
			DOWNLOADER=""
		fi
	fi

	case $DOWNLOADER in
		wget)	echo $BLUE"Downloading ${URL_TYPE} with wget from: "$NORMAL"$URL_ADDRESS" ;
			wget --tries=3 --timeout=15 -O "${URL_DEST}" "${URL_ADDRESS}" &> /dev/null ;;
		rsync)	echo $BLUE"Downloading ${URL_TYPE} with rsync from: "$NORMAL"$URL_ADDRESS"
			rsync "${URL_ADDRESS}" >"${URL_DEST}" &> /dev/null ;;
		curl)	echo $BLUE"Downloading ${URL_TYPE} with curl from: "$NORMAL"$URL_ADDRESS" ;
			curl -s "${URL_ADDRESS}" >"${URL_DEST}" &> /dev/null ;;
		lynx)	echo $BLUE"Downloading ${URL_TYPE} with lynx from: "$NORMAL"$URL_ADDRESS" ;
			lynx -source "${URL_ADDRESS}" >"${URL_DEST}" &> /dev/null ;;
		*)	echo "No downloader available." ;
			exit ;;
	esac
}

### find_source
find_source() {

if [[ "$EXTRA_SOURCES" != "" ]] ; then
	for URL in $EXTRA_SOURCES ; do
	  if ! [[ -e $CWD/$(basename ${URL}) ]] ; then
		if [ ! -w "$CWD" ] ; then
			echo $RED"FAILED! "$NORMAL"CWD is not writable... exiting."
			FAILED="READONLY CWD"
		else
			if [[ "$BASE_URL" != "" ]] ; then
				URL_ADDRESS=${BASE_URL}/${URL}
			else
				URL_ADDRESS=${URL}
			fi
			URL_DEST=${CWD}/$(basename $URL)
			URL_TYPE="extra sources"
			download_url
			if [ $? -ne 0 ] ; then
			 mv -f "${CWD}/$(basename $URL)" ${CWD}/$(basename $URL).FAIL
			 echo $RED"FAILED! "$NORMAL"Downloading '$(basename ${URL})' failed or cancelled."
			 FAILED="EXTRA_SOURCES DOWNLOAD"
			else
				if [ "$DOWNLOAD_ONLY" ]; then
				 echo $BLUE"Download completed to: "$NORMAL"${CWD}/$(basename $URL)"
				 exit 0
				else
				 echo $BLUE"Extra sources downloaded to: "$NORMAL"${CWD}/$(basename $URL)"
				fi
			fi
		fi
	  fi
	done
fi

if [[ "$SOURCE" != "" ]] || [[ "$SOURCE_NAME" != "" ]] ; then
	if [[ -L $SOURCE ]] ; then
	  echo $BLUE"Found source archive: "$NORMAL"$(basename $SOURCE)"
	  echo "It's really a symlink to: $(readlink -f $SOURCE)"
	  SOURCE=$(readlink -f $SOURCE)
	elif [[ -f $SOURCE ]] ; then
	  echo $BLUE"Found source archive: "$NORMAL"$(basename $SOURCE)"
	  SOURCE=$SOURCE
	elif [[ -f $SOURCES_DIR/$SOURCE_NAME ]] ; then
	  echo $BLUE"Found source archive in SOURCES_DIR: "$NORMAL"$(basename $SOURCE_NAME)"
	  SOURCE=$SOURCES_DIR/$SOURCE_NAME
	elif [[ -f $CWD/$SOURCE ]] ; then
	  echo $BLUE"Found source archive in CWD: "$NORMAL"$(basename $SOURCE)"
	  SOURCE=$CWD/$SOURCE
	elif [ "${SOURCE_URL}" != "" ]; then
		if [ ! -w "$SOURCES_DIR" ] ; then
			echo $RED"FAILED! "$NORMAL"SOURCES_DIR is not writable... exiting."
			FAILED="READONLY SOURCES_DIR"
		else
			if [[ "$BASE_URL" != "" ]] ; then
				URL_ADDRESS=${BASE_URL}/${SOURCE_URL}
			else
				URL_ADDRESS=${SOURCE_URL}
			fi
			URL_DEST=${SOURCE}
			URL_TYPE="sources"
			download_url
			if [ $? -ne 0 ]; then
				mv -f "${SOURCE}" "${SOURCE}".FAIL
				echo $RED"FAILED! "$NORMAL"Downloading '$(basename ${SOURCE})' failed or cancelled."
				FAILED="SOURCE DOWNLOAD"
			else
				if [ "$DOWNLOAD_ONLY" ]; then
				 echo $BLUE"Download completed to: "$NORMAL"$SOURCE"
				 exit 0
				else
				 echo $BLUE"Sources downloaded to: "$NORMAL"$SOURCE"
				fi
			fi
		fi
	else
	  echo $RED"FAILED! "$NORMAL"File: $(basename $SOURCE) not found!"
	  echo "Check for errors in the NAME, VERSION or SRC_SUFFIX. "
	  FAILED="SOURCE LOCATION"
	fi
fi
}