import {
  resolveBestContactWindow,
  ContactWindowInfo,
} from '../../src/comm/i18n/geo';

describe('Point 39: 潜客多时区识别与最佳联系时间窗口推荐 (Best Contact Time Window)', () => {
  describe('1. 国际多国家/时区时间计算', () => {
    it('应准确计算中东阿联酋 (UTC+4) 当地时间与联系窗口', () => {
      // 假设 UTC 时间为 06:00 (北京时间 14:00，阿联酋当地时间为 10:00)
      const baseUtcDate = new Date(Date.UTC(2026, 8, 21, 6, 0, 0));

      const windowInfo: ContactWindowInfo = resolveBestContactWindow(
        'AE',
        baseUtcDate
      );

      expect(windowInfo.localHour).toBe(10);
      expect(windowInfo.isWorkHour).toBe(true);
      expect(windowInfo.status).toBe('recommended');
      expect(windowInfo.suggestionText).toContain('当地工作时间');
    });

    it('当国际客商处于深夜休息时段 (如欧洲当地 23:00) 时，建议勿扰', () => {
      // 假设 UTC 时间为 22:00 (欧洲 CET UTC+1 当地为 23:00)
      const baseUtcDate = new Date(Date.UTC(2026, 8, 21, 22, 0, 0));

      const windowInfo: ContactWindowInfo = resolveBestContactWindow(
        'DE',
        baseUtcDate
      );

      expect(windowInfo.localHour).toBe(23);
      expect(windowInfo.isWorkHour).toBe(false);
      expect(windowInfo.status).toBe('do_not_disturb');
      expect(windowInfo.suggestionText).toContain('休息时段');
    });

    it('对于未识别国家时区时，默认安全降级返回可接受状态', () => {
      const windowInfo = resolveBestContactWindow(undefined);
      expect(windowInfo).toBeDefined();
      expect(typeof windowInfo.localHour).toBe('number');
      expect(typeof windowInfo.suggestionText).toBe('string');
    });
  });
});