ci-wrap

#!/bin/citbash -e

# make sure to clean up after ourselves

wipetmp=no

trap cleanup EXIT

cleanup() {
	if [ "$wipetmp" = "yes" ]; then
		echo "Cleaning workspace!"
		rm -rf $WORKSPACE
	fi
}

# prep args et all
citcmd="$1"

# first pass sanity checks
if [ -z "$citcmd" ]; then
	echo "no ci-tools command specified!"
	exit 1
fi

# if citcmd is empty, this will fail, so check
# first, then shift for arguments
shift

# let´s try to avoid a recursive bomb of doom
# NOTE: avoiding path mangling et all, just
# basic protection vs copy/paste errors
# while we do conversions, since this wrapper
# will vanish eventually
if [ "$citcmd" = "ci-wrap" ]; then
	echo "not allowed to self-call"
	exit 1
fi

if [ ! -d "$HOME/ci-tools" ]; then
	echo "ci-tools not installed on this node!"
	exit 1
fi

# if CITHOME is already set, we are being called
# recursively and we don´t need to redo the
# git dance + env setting

if [ -n "$CITHOME" ]; then
	echo "CITHOME already present in the environment. Nothing to do."
else
	if [ -z "$CITBRANCH" ]; then
		echo "CITBRANCH not detected! defaulting to main"
		CITBRANCH=main
	fi
	if [ "$CITBRANCH" = "main" ]; then
		CITHOME="$HOME/ci-tools"
	else
		if [ -z "$WORKSPACE" ]; then
			WORKSPACE="$(mktemp -d -t ci-tools-XXXXX)"
			wipetmp=yes
		fi
		echo "CITBRANCH set to $CITBRANCH"
		echo "Using $WORKSPACE"
		(
			flock -e 200
			if [ ! -d $WORKSPACE/ci-tools ]; then
				echo "Copy HOME/ci-tools to WORKSPACE"
				cp -rp $HOME/ci-tools $WORKSPACE/
				echo "Updating WORKSPACE copy of ci-tools"
				cd $WORKSPACE/ci-tools
				git pull
				echo "Switching WORKSPACE/ci-tools to $CITBRANCH"
				git checkout $CITBRANCH
				cd - > /dev/null
			fi
		) 200>$WORKSPACE/ci-wrap.lock
		CITHOME="$WORKSPACE/ci-tools"
	fi
fi

export CITHOME
export CITBRANCH

echo "CITBRANCH:  $CITBRANCH"
echo "CITHOME:    $CITHOME"
echo "CITCMD:     $citcmd"
echo "CITCMDARGS: $@"

# second pass sanity checks (executed on checkout branch)
if [ ! -f "$CITHOME/$citcmd" ]; then
	echo "command $CITHOME/$citcmd does not exist!"
	exit 1
fi

$CITHOME/$citcmd "$@"