#!/usr/bin/env bash
# WP-71 (Track E): fail if the backend's scholing-threshold policy default and the frontend's
# offline fallback default drift apart. ADR-0001's "config value" shape means the backend is
# the authority (GET /intake/policy) and the FE only keeps SCHOLING_THRESHOLD_DEFAULT as an
# offline/first-paint fallback (intake.machine.ts) — but the two literals are otherwise
# unlinked, so nothing stops them silently diverging. This is a cheap grep-based tripwire, not
# a build-time link between the two languages.
set -uo pipefail

BACKEND_FILE='backend/src/BigRegister.Api/Domain/Intake/IntakePolicy.cs'
FRONTEND_FILE='apps/ssp/src/app/herregistratie/domain/intake.machine.ts'

backend_value=$(grep -oE 'ScholingThreshold\s*=\s*[0-9]+' "$BACKEND_FILE" | grep -oE '[0-9]+$')
frontend_value=$(grep -oE 'SCHOLING_THRESHOLD_DEFAULT\s*=\s*[0-9]+' "$FRONTEND_FILE" | grep -oE '[0-9]+$')

if [ -z "$backend_value" ]; then
  echo "FAIL: could not find IntakePolicy.ScholingThreshold in $BACKEND_FILE"
  exit 1
fi
if [ -z "$frontend_value" ]; then
  echo "FAIL: could not find SCHOLING_THRESHOLD_DEFAULT in $FRONTEND_FILE"
  exit 1
fi

if [ "$backend_value" != "$frontend_value" ]; then
  echo "FAIL: FE/BE seam drift on the scholing threshold default"
  echo "  $BACKEND_FILE: ScholingThreshold = $backend_value"
  echo "  $FRONTEND_FILE: SCHOLING_THRESHOLD_DEFAULT = $frontend_value"
  echo 'Both literals represent the same intake policy default (ADR-0001 config value) and must match.'
  exit 1
fi

echo "OK: scholing threshold default matches on both sides ($backend_value)"

# WP-75: fail if the backend's Besluit enum and the frontend's BESLUIT_TAGS list (the wire
# convention: a string, not a raw enum) drift apart. Enum.TryParse<Besluit> at Program.cs:494
# is the only coupling and it fails at REQUEST time, not build time — this is a build-time
# tripwire for the same names/order both sides assume.
BESLUIT_BACKEND_FILE='backend/src/BigRegister.Api/Domain/Applications/AanvraagStatus.cs'
BESLUIT_FRONTEND_FILE='apps/behandelportal/src/app/behandeling/domain/besluit.machine.ts'

besluit_backend_raw=$(grep -oE 'public enum Besluit \{[^}]*\}' "$BESLUIT_BACKEND_FILE" | grep -oE '\{[^}]*\}')
besluit_frontend_raw=$(grep -oE "const BESLUIT_TAGS = \[[^]]*\]" "$BESLUIT_FRONTEND_FILE" | grep -oE '\[[^]]*\]')

if [ -z "$besluit_backend_raw" ]; then
  echo "FAIL: could not find 'public enum Besluit { ... }' in $BESLUIT_BACKEND_FILE"
  exit 1
fi
if [ -z "$besluit_frontend_raw" ]; then
  echo "FAIL: could not find 'const BESLUIT_TAGS = [ ... ]' in $BESLUIT_FRONTEND_FILE"
  exit 1
fi

besluit_backend_value=$(echo "$besluit_backend_raw" | tr -d '{}' | tr -d ' ')
besluit_frontend_value=$(echo "$besluit_frontend_raw" | tr -d '[]' | tr -d "' " )

if [ "$besluit_backend_value" != "$besluit_frontend_value" ]; then
  echo "FAIL: FE/BE seam drift on the Besluit tag list"
  echo "  $BESLUIT_BACKEND_FILE: Besluit { $besluit_backend_value }"
  echo "  $BESLUIT_FRONTEND_FILE: BESLUIT_TAGS = [ $besluit_frontend_value ]"
  echo 'Both lists are the same wire-convention names/order (Enum.TryParse<Besluit> at Program.cs) and must match.'
  exit 1
fi

echo "OK: Besluit tag list matches on both sides ($besluit_backend_value)"