import assert from 'node:assert/strict';
import test from 'node:test';
import {
  isChatSessionDeferEnabledForUser,
  isDirectEscalationContextEnabledForUser,
  resolveChatSessionDeferPolicy,
  resolveDirectEscalationContextPolicy,
  shouldDeferChatSessionRoutingToLlm,
} from './chat-task-intent-config.mjs';

test('resolveDirectEscalationContextPolicy defaults to disabled', () => {
  const policy = resolveDirectEscalationContextPolicy({});
  assert.equal(policy.enabled, false);
  assert.equal(policy.canaryUserIds.size, 0);
});

test('isDirectEscalationContextEnabledForUser respects canary list', () => {
  const policy = {
    enabled: true,
    canaryUserIds: new Set(['user-a']),
  };
  assert.equal(isDirectEscalationContextEnabledForUser('user-a', policy), true);
  assert.equal(isDirectEscalationContextEnabledForUser('user-b', policy), false);
});

test('shouldDeferChatSessionRoutingToLlm skips explicit direct chat text', () => {
  assert.equal(shouldDeferChatSessionRoutingToLlm({
    enabled: true,
    text: '你好',
    isExplicitDirectChatOnlyText: (value) => value === '你好',
  }), false);
  assert.equal(shouldDeferChatSessionRoutingToLlm({
    enabled: true,
    text: '帮我研究一下车载冰箱的参数和选购建议',
    minTextLength: 12,
    isExplicitDirectChatOnlyText: () => false,
  }), true);
  assert.equal(shouldDeferChatSessionRoutingToLlm({
    enabled: false,
    text: '帮我研究一下车载冰箱的参数和选购建议',
    isExplicitDirectChatOnlyText: () => false,
  }), false);
});

test('resolveChatSessionDeferPolicy parses min text length', () => {
  const policy = resolveChatSessionDeferPolicy({
    MEMIND_CHAT_ROUTER_CHAT_SESSION_DEFER_ENABLED: '1',
    MEMIND_CHAT_ROUTER_CHAT_SESSION_DEFER_MIN_TEXT_LENGTH: '20',
    MEMIND_CHAT_ROUTER_CHAT_SESSION_DEFER_CANARY_USER_IDS: 'john',
  });
  assert.equal(policy.enabled, true);
  assert.equal(policy.minTextLength, 20);
  assert.deepEqual([...policy.canaryUserIds], ['john']);
  assert.equal(isChatSessionDeferEnabledForUser('john', policy), true);
  assert.equal(isChatSessionDeferEnabledForUser('other', policy), false);
});