#!/usr/bin/env bash
# Regression test for scripts/vale-wrap.sh: Vale's `text.frontmatter.description`
# NLP scope silently stops matching when the description value is a YAML block
# scalar spanning 2+ physical lines. vale-wrap.sh flattens it to one line before
# handing off to the real vale binary — this asserts that actually happens.
set -euo pipefail

REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
SCRIPT="$REPO_ROOT/scripts/vale-wrap.sh"
PASS=0
FAIL=0

pass() { echo "  PASS: $1"; PASS=$((PASS + 1)); }
fail() { echo "  FAIL: $1"; FAIL=$((FAIL + 1)); }

if ! command -v vale &>/dev/null; then
  echo "vale is not installed — skipping (matches skill-audit/agent-audit's own fallback behavior)"
  exit 0
fi

make_fixture() {
  local dir desc_lines file
  dir="$(mktemp -d)"
  (cd "$dir" && git init -q)
  mkdir -p "$dir/plugins/testplugin/skills/zzzskill"
  desc_lines="$1"
  file="$dir/plugins/testplugin/skills/zzzskill/SKILL.md"
  {
    echo "---"
    echo "name: zzzskill"
    echo "description: >"
    for ((i = 1; i <= desc_lines; i++)); do
      echo "  Line $i mentions helps with and utilize, plus a colon: like this."
    done
    echo "---"
    echo ""
    echo "Body."
  } > "$file"
  echo "$dir"
}

# --- 1. A known-bad single-line description is caught (sanity check on Vale itself) ---
echo ""
echo "--- catches vague wording in a single-line description ---"
FIXTURE1="$(make_fixture 1)"
trap 'rm -rf "$FIXTURE1"' EXIT
if (cd "$FIXTURE1" && bash "$SCRIPT" --config "$REPO_ROOT/.vale.ini" \
  plugins/testplugin/skills/zzzskill/SKILL.md) | grep -q "VagueWording"; then
  pass "flags vague wording when description is a single physical line"
else
  fail "did not flag known-bad single-line description"
fi

# --- 2. The same known-bad wording across 2+ physical lines is still caught ---
echo ""
echo "--- catches vague wording in a multi-line folded description ---"
FIXTURE2="$(make_fixture 2)"
trap 'rm -rf "$FIXTURE1" "$FIXTURE2"' EXIT
if (cd "$FIXTURE2" && bash "$SCRIPT" --config "$REPO_ROOT/.vale.ini" \
  plugins/testplugin/skills/zzzskill/SKILL.md) | grep -q "VagueWording"; then
  pass "flags vague wording when description spans 2+ physical lines"
else
  fail "silently missed known-bad wording in a multi-line description — the bug this test guards against"
fi

# --- 3. Line count is preserved so unrelated report line numbers don't shift ---
echo ""
echo "--- preserves total line count when flattening ---"
FIXTURE3="$(make_fixture 3)"
trap 'rm -rf "$FIXTURE1" "$FIXTURE2" "$FIXTURE3"' EXIT
ORIG_LINES=$(wc -l < "$FIXTURE3/plugins/testplugin/skills/zzzskill/SKILL.md")
OUT=$(cd "$FIXTURE3" && bash "$SCRIPT" --config "$REPO_ROOT/.vale.ini" \
  plugins/testplugin/skills/zzzskill/SKILL.md 2>&1 || true)
MAX_LINE=$(echo "$OUT" | grep -oE '^[[:space:]]*[0-9]+:[0-9]+' | tr -d '[:space:]' | cut -d: -f1 | sort -n | tail -1)
if [[ -n "$MAX_LINE" ]] && (( MAX_LINE <= ORIG_LINES )); then
  pass "reported line numbers stay within the original file's line count"
else
  fail "reported line number ($MAX_LINE) exceeds original file line count ($ORIG_LINES)"
fi

echo ""
echo "Results: $PASS passed, $FAIL failed"
[[ $FAIL -eq 0 ]]