#!/usr/bin/env bash
set -euo pipefail
if [ "${1:-}" = "--help" ] || [ "${1:-}" = "-h" ]; then
  cat <<'USAGE'
Purpose: Confirm every "Outline" section heading in the brief appears as
         a heading in the draft.
Usage:   bash scripts/check-coverage.sh <brief> <draft>
USAGE
  exit 0
fi
[ -f "${1:-}" ] && [ -f "${2:-}" ] || { printf 'usage: %s <brief> <draft>\n' "$0" >&2; exit 2; }
brief="$1"; draft="$2"
em=$'\xe2\x80\x94'

sections=$(awk '/^## Outline/{f=1;next} /^## /{f=0} f && /^[0-9]+\.[[:space:]]/' "$brief" \
  | sed -E 's/^[0-9]+\.[[:space:]]*//' \
  | sed -E "s/(:[[:space:]]|[[:space:]]+${em}).*\$//" \
  | sed -E 's/[[:space:]]+$//')

issues=0
while IFS= read -r s; do
  [ -z "$s" ] && continue
  if ! grep -qF "$s" "$draft"; then
    printf 'missing in draft: %s\n' "$s" >&2
    issues=$((issues+1))
  fi
done <<EOF
$sections
EOF

[ "$issues" -gt 0 ] && exit 1
printf 'ok\n'