#!/bin/bash

# This is a script to read portage log items from einfo, ewarn etc, new in the
# portage-2.1 series.
#
# Author: Donnie Berkholz <spyderous@gentoo.org>
# Updated by: Uwe Klosa <uwe.klosa@gmail.com>
# Updated by: Slawomir Nizio <slawomir.nizio@sabayon.org>

# Get prefix
EPREFIX=${EPREFIX:-$(portageq envvar EPREFIX)}

# set decent PATH for bug 172969

PATH=${EPREFIX}/usr/bin:${EPREFIX}/bin:${PATH}

# Set ELOGDIR
PORT_LOGDIR="$(portageq envvar PORT_LOGDIR)"
[ "$PORT_LOGDIR" = "" ] && PORT_LOGDIR="${EPREFIX}/var/log/portage"
ELOGDIR="$PORT_LOGDIR/elog"

# Verify that ELOGDIR exists
if [ ! -d "$ELOGDIR" ]; then
	echo "ELOG directory: $ELOGDIR does not exist!"
	exit 1
fi

# Use the pager from the users environment
[ -z "$PAGER" ] && PAGER="less"

# Set up select prompt
PS3="Choice? "

SORT=${EREAD_SORT_ORDER}

find_unsorted() {
	find . -name '*:*:*.log*' | sed -e "s:\./::g"
}
find_by_name() {
	find . -name '*:*:*.log*' | sort | sed -e "s:\./::g"
}
find_by_time() {
	find . -name '*:*:*.log*' | sort -k 3 -t : | sed -e "s:\./::g"
}
find_files() {
	case ${SORT} in
		alphabet)
			find_by_name
			;;
		time)
			find_by_time
			;;
		*)
			find_unsorted
		;;
	esac
}

select_loop() {
	ANY_FILES=$(find_files)

	if [[ -z ${ANY_FILES} ]]; then
		echo "No log items to read"
		break
	fi

	echo
	echo "This is a list of portage log items. Choose a number to view that file or type q to quit."
	echo

	# Pick which file to read
	select FILE in ${ANY_FILES}; do
		case ${REPLY} in
			q)
				echo "Quitting"
				QUIT="yes"
				break
				;;
			a)
				SORT="alphabet"
				;;
			t)
				SORT="time"
				;;
			*)
				if [ -f "$FILE" ]; then
					${PAGER} ${FILE}
					read -p "Delete file? [y/N] " DELETE
					case ${DELETE} in
						q)
							echo "Quitting"
							QUIT="yes"
							break
							;;
						y|Y)
							rm -f ${FILE}
							SUCCESS=$?
							if [[ ${SUCCESS} = 0 ]]; then
								echo "Deleted ${FILE}"
							else
								echo "Unable to delete ${FILE}"
							fi
							;;
						# Empty string defaults to N (save file)
						n|N|"")
							echo "Saving ${FILE}"
							;;
						*)
							echo "Invalid response. Saving ${FILE}"
							;;
					esac
				else
					echo
					echo "Invalid response."
				fi
				;;
		esac
		break
	done
}

pushd ${ELOGDIR} > /dev/null

until [[ -n ${QUIT} ]]; do
	select_loop
done

popd > /dev/null