#!/usr/bin/env bash
# Resolve plan/ conflicts left by a merge or rebase.
#
# plan/README.md's tables are generated, so a textual conflict in them carries
# no information: regenerating is the resolution. plan/order.txt union-merges
# via .gitattributes and needs nothing here, but is checked so a duplicated id
# is caught rather than silently doubling a row.
set -euo pipefail
cd "$(dirname "$0")/.."

if grep -qE '^(<<<<<<<|>>>>>>>)' plan/README.md 2>/dev/null; then
  # Take either side wholesale; the regeneration below is what makes it right.
  git checkout --ours plan/README.md 2>/dev/null || true
fi

python3 scripts/gen-plan-readme.py
python3 scripts/check-plan.py
python3 scripts/gen-plan-readme.py --check

dupes=$(grep -vE '^\s*(#|$)' plan/order.txt | sort | uniq -d)
if [ -n "$dupes" ]; then
  echo "plan/order.txt has duplicate ids after the union merge:" >&2
  echo "$dupes" >&2
  echo "remove one of each, then rerun." >&2
  exit 1
fi

git add plan/README.md plan/order.txt
echo "plan/ resolved: README regenerated, order.txt checked."