export_satellite_annex

#!/bin/bash
set -o errexit

set -x

# TODO: Want to have it be that TARGET is just the place where the repo will be created...
# TODO: Make it better detect existing repo
# TODO: Should probably just have confirmations before doing anything destrcutive....

# TODO: Do that thing where you make it catch any errors from any command

SOURCE=${SOURCE:-.}
TARGET=${TARGET:-/tmp/"$(basename "$SOURCE")"}
TARGET_UUID=${TARGET_UUID:-""}

# For now, don't let there be defaults...
if [ "$SOURCE" == "." ]; then
	echo "MUST SET SOURCE"
	exit 1
fi

KEYSTEMP=$(mktemp)

trap "rv=\$?; rm $KEYSTEMP; exit \$rv" EXIT

function init_target {
	echo "init_target()"

	git init -- "${TARGET}"

	# This is so I don't have to deal with nastiness of orphan branches
	( cd -- "${TARGET}" && git checkout -b master && git commit --allow-empty -q -m "Initial Commit" && git checkout -b git-annex )
}

function copy_source_keys {
	echo "copy_source_keys()"

	# TODO: Handle directory stuff better
	# TODO: Just pipe keys list directly instead of using tmpfile.

	cd "${SOURCE}"

	set +x
	echo "Building list of keys to copy"

	while IFS= read -r line; do
		basename -- "$(readlink -- "${line}")"
	done > "${KEYSTEMP}" < <(find "${SOURCE}" -type l)

	echo "Making directories in ${TARGET}"
	while read -r line; do
		mkdir -p "${TARGET}/${line}"
	done < <(git annex examinekey --batch --format='${hashdirlower}\n' < "${KEYSTEMP}")

	echo "Copying keys from ${SOURCE} git-annex branch to ${TARGET}"
	git show git-annex:uuid.log > "${TARGET}/uuid.log"
	git show git-annex:remote.log > "${TARGET}/remote.log"
	git show git-annex:trust.log > "${TARGET}/trust.log"

	while read -r line; do
		git show git-annex:$line > "${TARGET}/${line}"
		git show git-annex:"${line}.cnk" &> /dev/null && git show git-annex:"${line}.cnk" > "${TARGET}/${line}.cnk"
		git show git-annex:"${line}.met" &> /dev/null && git show git-annex:"${line}.met" > "${TARGET}/${line}.met"
	done < <(git annex examinekey --batch --format='${hashdirlower}${key}.log\n' < "${KEYSTEMP}")
	
	set -x


}

function import_target {

	set +x

	cd "${TARGET}"

	git add . && git commit -q -m "Imported"
	git checkout master

	# cp -P "${SOURCE}/"* "${TARGET}"
	# Deal argument list too long
	echo "Copying contents to new repo"
	( cd "${SOURCE}" && tar --exclude=.git -cf - . | pv | tar xf - -C "${TARGET}")

	git add . && git commit -q -m "IMPORTED"
	git annex reinit $TARGET_UUID

	echo "Checking for existence of annex-defaults.sh"
	which annex-defaults.sh && annex-defaults.sh

	set -x
}

echo "Starting"
echo "\$SOURCE: ${SOURCE}"
echo "\$TARGET: ${TARGET}"
echo "\$TARGET_UUID: ${TARGET_UUID}"

init_target
copy_source_keys
import_target