import assert from 'node:assert/strict';
import test from 'node:test';
import { monitoringMileageValue, recentMileageStats } from './mileage-display';
import type { VehicleRecentDay } from './api';
import type { MonitoringVehicle } from './types';

const day = (dailyKm: number, isDataSynced = true): VehicleRecentDay => ({
  date: '2026-10-12', dailyKm, isDataSynced, sourceProtocol: null, sourceCategory: null,
});

test('详情合计、平均值和有数据天排除缺失日，保留真实零里程', () => {
  assert.deepEqual(recentMileageStats([day(100), day(900, false), day(200), day(0)]), {
    totalKm: 300, synced: 3, avg: 100, max: 200, totalDays: 4,
  });
  assert.equal(recentMileageStats([day(0, false)]).synced, 0);
});

test('列表全区间缺失时显示横杠，即使存在累计里程', () => {
  const vehicle = { dailyKm: 0, isDataSynced: false, totalKm: 64413.6 } as MonitoringVehicle;
  assert.equal(monitoringMileageValue(vehicle), '—');
  assert.equal(monitoringMileageValue({ ...vehicle, isDataSynced: true }), 0);
  assert.equal(monitoringMileageValue({ ...vehicle, isDataSynced: true, dailyKm: 5417 }), 5417);
});