deploy-undo

#!/bin/bash
#
# Undo a deploy by restoring .bak manifest files, removing the version from
# incrementals lists, and deleting the versioned directory.
#
set -euo pipefail

SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
MANIFESTS_DIR="$SCRIPT_DIR/manifests"

DEPLOY_CMD=$(php -r "require('$SCRIPT_DIR/config.inc.php'); echo \$DEPLOY_CMD;")

function usage {
	cat >&2 <<DONE
Usage: $0 CHANNEL VERSION PLATFORMS
  CHANNEL      Release channel ('release', 'beta', 'dev')
  VERSION      Version number (e.g., '9.0.1', '9.0.1-beta.3+abc123')
  PLATFORMS    Platforms to undo (m=Mac, w=Windows, l=Linux)
DONE
	exit 1
}

CHANNEL="${1:-}"
VERSION="${2:-}"
PLATFORMS="${3:-}"

if [[ -z "$CHANNEL" ]] || [[ -z "$VERSION" ]] || [[ -z "$PLATFORMS" ]]; then
	usage
fi

CHANNEL_DIR="$MANIFESTS_DIR/$CHANNEL"
VERSION_DIR="$CHANNEL_DIR/$VERSION"

# Restore .bak files and remove version from incrementals
for i in `seq 0 1 $((${#PLATFORMS}-1))`
do
	case ${PLATFORMS:i:1} in
		m)
			os_name="mac"
			architectures="mac"
			;;
		w)
			os_name="win"
			architectures="win32 win-x64 win-arm64"
			;;
		l)
			os_name="linux"
			architectures="linux-i686 linux-x86_64 linux-arm64"
			;;
		*)
			echo "Invalid platform option: ${PLATFORMS:i:1}" >&2
			usage
			;;
	esac

	for arch in $architectures; do
		bakfile="$CHANNEL_DIR/updates-$arch.json.bak"
		jsonfile="$CHANNEL_DIR/updates-$arch.json"
		if [ ! -f "$bakfile" ]; then
			echo "Error: $bakfile not found -- nothing to restore" >&2
			exit 1
		fi

		echo "Restoring $jsonfile from $bakfile"
		mv "$bakfile" "$jsonfile"
	done

	# Remove version from incrementals list
	incr_file="$CHANNEL_DIR/incrementals-$os_name"
	if [ -f "$incr_file" ]; then
		echo "Removing $VERSION from $incr_file"
		# Use grep to filter out the exact version line
		grep -vxF "$VERSION" "$incr_file" > "$incr_file.tmp" || true
		mv "$incr_file.tmp" "$incr_file"
	fi
done

# Delete versioned directory
if [ -d "$VERSION_DIR" ]; then
	echo "Deleting $VERSION_DIR"
	rm -rf "$VERSION_DIR"
fi

# Deploy: push reverted changes live
if [ -n "${DEPLOY_CMD:-}" ]; then
	echo
	echo "Deploying..."
	$DEPLOY_CMD
fi

echo
echo "Undid deploy of $VERSION on channel $CHANNEL for platforms $PLATFORMS"