#!/usr/bin/env bash
# duplicate-hook-registration-guard.sh 的迴歸測試（inkstone/ISEP#122）
#
# 這支閘的價值是「不吵的時候真的不吵，該吵的時候真的吵得出正確清單」——
# 兩邊都要驗，而且全程用假的 plugin root／專案目錄，不碰真正的
# InkStoneCo/.claude/ 或這台機器裝著的 ISEP plugin。
set -u
HOOK="${1:-$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)/duplicate-hook-registration-guard.sh}"
PASS=0; FAIL=0; N=0

check() { # check <說明> <輸出> <exit碼> <該出現|!不該出現>...
  desc="$1"; out="$2"; code="$3"; shift 3; N=$((N+1)); ok=1; why=""
  if [ "$code" != "0" ]; then ok=0; why="exit 應該是 0（這支從不擋人），實際是 $code"; fi
  for w in "$@"; do
    case "$w" in
      "!"*) if printf '%s' "$out" | grep -qF -- "${w#!}"; then ok=0; why="不該出現卻出現了：${w#!}"; fi ;;
      *)    if ! printf '%s' "$out" | grep -qF -- "$w"; then ok=0; why="少了：$w"; fi ;;
    esac
  done
  if [ "$ok" = 1 ]; then printf '  ✅ %s\n' "$desc"; PASS=$((PASS+1))
  else printf '  ❌ %s —— %s\n' "$desc" "$why"; printf '%s\n' "$out" | sed 's/^/     /'; FAIL=$((FAIL+1)); fi
}

# mkroot <名字...> → 造一份假 plugin root，hooks.json 裡真的註冊這些檔名
mkroot() {
  d="$TMP/root-$RANDOM"; mkdir -p "$d/hooks"
  {
    printf '{"hooks":{"PreToolUse":[{"matcher":"Bash","hooks":['
    first=1
    for n in "$@"; do
      [ "$first" = 1 ] || printf ','
      printf '{"type":"command","command":"${CLAUDE_PLUGIN_ROOT}/hooks/%s"}' "$n"
      first=0
    done
    printf ']}]}}\n'
  } > "$d/hooks/hooks.json"
  printf '%s\n' "$d"
}

# mkproj <名字...> → 造一份假專案目錄，settings.json 裡登記這些檔名
mkproj() {
  d="$TMP/proj-$RANDOM"; mkdir -p "$d/.claude"
  {
    printf '{"hooks":{"PreToolUse":[{"matcher":"Bash","hooks":['
    first=1
    for n in "$@"; do
      [ "$first" = 1 ] || printf ','
      printf '{"type":"command","command":"$CLAUDE_PROJECT_DIR/.claude/hooks/%s"}' "$n"
      first=0
    done
    printf ']}]}}\n'
  } > "$d/.claude/settings.json"
  printf '%s\n' "$d"
}

run() { # run <root> <proj>
  out=$(CLAUDE_PLUGIN_ROOT="$1" CLAUDE_PROJECT_DIR="$2" bash "$HOOK" 2>&1)
  code=$?
  printf '%s\x1e%s' "$out" "$code"
}

TMP=$(mktemp -d); trap 'rm -rf "$TMP"' EXIT

echo "── 該吵 ──────────────────────────────────────────────────────"

R=$(mkroot prod-write-guard.sh github-contact-guard.sh)
P=$(mkproj prod-write-guard.sh other-thing.sh)
o=$(run "$R" "$P"); out="${o%$'\x1e'*}"; code="${o##*$'\x1e'}"
check "① 專案版跟 plugin 同名一支 → 點名那一支" "$out" "$code" \
  "重複掛載警報" "1 支" "prod-write-guard.sh" "!github-contact-guard.sh" "!other-thing.sh"

R=$(mkroot a.sh b.sh c.sh)
P=$(mkproj a.sh b.sh c.sh)
o=$(run "$R" "$P"); out="${o%$'\x1e'*}"; code="${o##*$'\x1e'}"
check "② 全部同名 → 三支都點名" "$out" "$code" "3 支" "a.sh" "b.sh" "c.sh"

echo "── 不該吵（誤攔比漏擋嚴重）───────────────────────────────────"

R=$(mkroot a.sh)
P=$(mkproj z.sh)
o=$(run "$R" "$P"); out="${o%$'\x1e'*}"; code="${o##*$'\x1e'}"
check "③ 完全不重疊 → 靜音" "$out" "$code" "!重複掛載"

R=$(mkroot a.sh)
d="$TMP/proj-empty-$RANDOM"; mkdir -p "$d/.claude"; echo '{"hooks":{}}' > "$d/.claude/settings.json"
o=$(run "$R" "$d"); out="${o%$'\x1e'*}"; code="${o##*$'\x1e'}"
check "④ 專案沒登記任何 .claude/hooks/*.sh → 靜音" "$out" "$code" "!重複掛載"

d="$TMP/proj-nosettings-$RANDOM"; mkdir -p "$d/.claude"
o=$(run "$R" "$d"); out="${o%$'\x1e'*}"; code="${o##*$'\x1e'}"
check "⑤ 專案根本沒有 settings.json → 靜音" "$out" "$code" "!重複掛載"

o=$(CLAUDE_PROJECT_DIR="$(mkproj a.sh)" bash "$HOOK" 2>&1); code=$?
check "⑥ 沒有 CLAUDE_PLUGIN_ROOT（不是 plugin 環境）→ 靜音" "$o" "$code" "!重複掛載"

d="$TMP/root-nohooksjson-$RANDOM"; mkdir -p "$d/hooks"
o=$(CLAUDE_PLUGIN_ROOT="$d" CLAUDE_PROJECT_DIR="$(mkproj a.sh)" bash "$HOOK" 2>&1); code=$?
check "⑦ plugin root 沒有 hooks.json（環境不完整）→ 靜音" "$o" "$code" "!重複掛載"

echo "── 判準是「登記」不是「檔案存在」──────────────────────────────"

R=$(mkroot pre-write-guard.template.sh)  # 有這個檔但 hooks.json 沒收（樣板慣例）
d="$TMP/root-unreg-$RANDOM"; mkdir -p "$d/hooks"; echo '{"hooks":{}}' > "$d/hooks/hooks.json"
touch "$d/hooks/pre-write-guard.template.sh"
P=$(mkproj pre-write-guard.template.sh)
o=$(run "$d" "$P"); out="${o%$'\x1e'*}"; code="${o##*$'\x1e'}"
check "⑧ plugin 有這個檔但沒真的註冊 → 不算重複，靜音" "$out" "$code" "!重複掛載"

echo ""
echo "── 結果：$PASS 通過 / $FAIL 失敗（共 $N）──"
[ "$FAIL" -eq 0 ]