'use strict';

const test = require('node:test');
const assert = require('node:assert/strict');
const { createEscalation } = require('../src/escalation');

const esc = createEscalation({ client: { sendPrivateNote: async () => {}, assignUser: async () => {} } });

test('escalation: three consecutive fails -> level 2', () => {
  assert.equal(esc.shouldEscalate({ messagesProcessed: 3 }, 'policy_faq', 'high', 3, 2).level, 2);
});

test('escalation: low KB with no hits -> level 1', () => {
  assert.equal(esc.shouldEscalate({ messagesProcessed: 1 }, 'policy_faq', 'low', 0, 0).level, 1);
});

test('escalation: healthy -> level 0', () => {
  assert.equal(esc.shouldEscalate({ messagesProcessed: 1 }, 'policy_faq', 'high', 0, 3).level, 0);
});

test('escalation: appends localized human option', () => {
  const out = esc.appendEscalationOption('您好', '您好，订单怎么查');
  assert.match(out, /转人工/);
});