#!/bin/sh
# Narrows the workspace in ./pubspec.yaml to the members named, for an image that builds
# only those (the Dockerfiles of Learn's server and curator): pub then resolves without
# the other members, whose folders the image doesn't hold. Fails if one named isn't a
# member, so a renamed package fails the build loudly.
#
#   sh tool/workspace_only.sh apps/learn/halkyon_learn_server packages/halkyon_base_server
set -eu
awk -v keep="$*" '
  BEGIN { n = split(keep, k, " "); for (i = 1; i <= n; i++) wanted["  - " k[i]] = 1 }
  /^workspace:/ { block = 1; print; next }
  block && /^  - / { if ($0 in wanted) { print; found[$0] = 1 }; next }
  { block = 0; print }
  END {
    for (w in wanted) if (!(w in found)) { print "Not a workspace member:" substr(w, 4) > "/dev/stderr"; failed = 1 }
    exit failed
  }
' pubspec.yaml >pubspec.yaml.narrowed
mv pubspec.yaml.narrowed pubspec.yaml