#!/usr/bin/env bash
set -euo pipefail

script_dir="$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" && pwd)"
repo_root="$(cd -- "${script_dir}/.." && pwd)"
cd "${repo_root}"

if ! command -v rg >/dev/null 2>&1; then
  echo "[ERROR] rg is required for js-contract-check." >&2
  exit 2
fi

failures=0

ok() {
  echo "[OK]  $*"
}

fail() {
  echo "[FAIL] $*" >&2
  failures=$((failures + 1))
}

alert_hits="$(rg -n "window\\.alert\\s*\\(" web/js modules/*/web/js -g '*.js' || true)"
if [[ -n "${alert_hits}" ]]; then
  fail "window.alert usage detected:"
  echo "${alert_hits}" >&2
else
  ok "No window.alert usage in web/js and modules/*/web/js"
fi

dom_ready_hits="$(rg -n "DOMContentLoaded|document\\.readyState" web/js modules/*/web/js -g '*.js' -g '!**/vendor/**' || true)"
if [[ -n "${dom_ready_hits}" ]]; then
  fail "DOM-ready auto-init pattern detected (use lifecycle init(root, config) + runtime wiring):"
  echo "${dom_ready_hits}" >&2
else
  ok "No DOM-ready auto-init pattern in web/js and modules/*/web/js"
fi

fetch_hits="$(rg -n "\\bfetch\\s*\\(" web/js modules/*/web/js -g '*.js' -g '!web/js/core/app-http.js' -g '!web/js/core/app-telemetry.js' || true)"
if [[ -n "${fetch_hits}" ]]; then
  fail "Direct fetch(...) usage detected outside approved HTTP infrastructure:"
  echo "${fetch_hits}" >&2
else
  ok "Frontend JS uses centralized app-http (except app-http/app-telemetry infrastructure)"
fi

list_module_hits="$(rg -n "initStandardListPage\\(" web/js/pages modules/*/web/js/pages -g '*.js' || true)"
if [[ -n "${list_module_hits}" ]]; then
  fail "Legacy initStandardListPage(...) usage found in page modules (use createListPageModule):"
  echo "${list_module_hits}" >&2
else
  ok "List page modules use createListPageModule (no direct initStandardListPage calls)"
fi

runtime_files=(
  "modules/helpdesk/web/js/helpdesk-detail.js"
  "modules/helpdesk/web/js/helpdesk-domain-detail.js"
  "modules/helpdesk/web/js/helpdesk-ticket.js"
  "modules/helpdesk/web/js/helpdesk-team.js"
  "modules/helpdesk/web/js/helpdesk-risk-radar.js"
  "modules/helpdesk/web/js/helpdesk-settings.js"
  "modules/helpdesk/web/js/handover-domain-select.js"
  "modules/helpdesk/web/js/handover-schema-editor.js"
  "web/js/components/app-lookup-field.js"
)

for file in "${runtime_files[@]}"; do
  if [[ ! -f "${file}" ]]; then
    fail "Missing runtime file: ${file}"
    continue
  fi

  if rg -q "DOMContentLoaded|document\\.readyState" "${file}"; then
    fail "${file}: lifecycle auto-init pattern found"
  fi

  if rg -q "const container = document\\.querySelector" "${file}"; then
    fail "${file}: top-level container auto-init pattern found"
  fi

done
ok "Runtime files are free of sideeffect auto-init patterns"

import_violations=0
while IFS= read -r line; do
  file="${line%%:*}"
  import_path="$(printf '%s' "${line}" | sed -E "s/.*['\"]([^'\"]+)['\"].*/\1/")"

  if [[ "${import_path}" == /js/* ]]; then
    continue
  fi

  if [[ "${import_path}" == ./* || "${import_path}" == ../* ]]; then
    if printf '%s' "${import_path}" | rg -q "(^|/)js/(core|components|pages)/"; then
      echo "${file}: relative core import forbidden -> ${import_path}" >&2
      import_violations=$((import_violations + 1))
    fi
    continue
  fi

  echo "${file}: invalid module import path -> ${import_path}" >&2
  import_violations=$((import_violations + 1))
done < <(rg -n "^\\s*import\\s+(?:[^'\\\"]+\\s+from\\s+)?['\\\"][^'\\\"]+['\\\"]" modules/*/web/js -g '*.js')

if [[ "${import_violations}" -gt 0 ]]; then
  fail "Module import policy violations: ${import_violations}"
else
  ok "Module import policy valid (core imports absolute /js/...; local imports relative)"
fi

if [[ "${failures}" -gt 0 ]]; then
  echo "[FAIL] JS contract check failed with ${failures} issue(s)." >&2
  exit 1
fi

echo "[OK] JS contract check passed."