#!/bin/sh
# Fails if any *.rs file under ROOT/crates has more than 500 lines.
# Files under any target/ directory are ignored. Test files count.
ROOT="${1:-.}"
max=500

# Fail closed: there is nothing to check without a crates directory.
if [ ! -d "$ROOT/crates" ]; then
    echo "check-lines: $ROOT/crates is not a directory" >&2
    exit 1
fi

# -prune stops find descending into target/ trees.
find "$ROOT/crates" -type d -name target -prune -o -type f -name '*.rs' -print \
| while read -r f; do
    n=$(awk 'END { print NR }' "$f")
    if [ "$n" -gt "$max" ]; then
        echo "check-lines: $f has $n lines (limit $max)" >&2
        exit 1
    fi
done
exit $?