#!/usr/bin/env bash
# Check every path:line citation in the map against the real tree.
#
# A card marked `verified` with a citation that no longer resolves is worse than no card,
# so this runs cheap and often. It checks two forms:
#   `app/models/order.rb:137`   full path from the repo root
#   `:137-148`                  shorthand, resolved against the card's `entity:`
# It cannot tell you a citation points at the *wrong* line — only that the line exists.

set -uo pipefail

map_dir="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
repo_root="$(cd "${map_dir}/../.." && pwd)"
refs=$(mktemp)
trap 'rm -f "$refs"' EXIT

while IFS= read -r card; do
  rel="${card#"${repo_root}"/}"
  entity=$(awk '/^entity:/ { sub(/^entity: */, ""); print; exit }' "$card")

  grep -oE '[A-Za-z0-9_][A-Za-z0-9_./-]*\.(rb|yml|erb|md|js|sh|json):[0-9]+(-[0-9]+)?' "$card" \
    | sort -u | while read -r ref; do
        printf '%s\t%s\t%s\n' "$rel" "${ref%:*}" "${ref##*:}"
      done >> "$refs"

  if [[ -n "$entity" ]]; then
    grep -oE '`:[0-9]+(-[0-9]+)?`' "$card" | tr -d '`' | sort -u | while read -r ref; do
      printf '%s\t%s\t%s\n' "$rel" "$entity" "${ref#:}"
    done >> "$refs"
  fi
done < <(find "$map_dir" -name '*.md')

total=0; bad=0
while IFS=$'\t' read -r card path spec; do
  total=$((total + 1))
  full="${repo_root}/${path}"
  if [[ ! -f "$full" ]]; then
    echo "MISSING FILE  ${card} -> ${path}"
    bad=$((bad + 1)); continue
  fi
  last="${spec##*-}"
  lines=$(wc -l < "$full")
  if (( last > lines )); then
    echo "LINE OUT OF RANGE  ${card} -> ${path}:${spec} (file has ${lines} lines)"
    bad=$((bad + 1))
  fi
done < "$refs"

echo "checked ${total} citations, ${bad} broken"
[[ $bad -eq 0 ]]