import assert from 'node:assert/strict';
import test from 'node:test';
import type { HydrogenOverviewResponse } from '../api.js';
import {
  deriveOverviewMetrics,
  formatKg,
  formatRelative,
  formatYuan,
} from './model.js';

test('重量和金额单位保持现有阈值及负数格式', () => {
  assert.deepEqual(formatKg(999.5), { value: '999.50', unit: 'Kg' });
  assert.deepEqual(formatKg(1000), { value: '1.00', unit: 'T' });
  assert.deepEqual(formatYuan(9999), { value: '9,999', unit: '元' });
  assert.deepEqual(formatYuan(12345), { value: '1.23', unit: '万元' });
  assert.deepEqual(formatYuan(-100_000_000), { value: '-1.00', unit: '亿元' });
});

test('相对更新时间保持秒、分钟、小时和未来时间边界', () => {
  const now = new Date(2026, 7, 13, 12, 0, 0).getTime();
  assert.equal(formatRelative(now + 60_000, now), '刚刚');
  assert.equal(formatRelative(now - 30_000, now), '30 秒前');
  assert.equal(formatRelative(now - 5 * 60_000, now), '5 分钟前');
  assert.equal(formatRelative(now - 3 * 60 * 60_000, now), '3 小时前');
});

test('总览派生指标保持月份顺序、动能、集中度和收益率口径', () => {
  const data = {
    kpi: {
      yearKg: 1000,
      yearFee: 0,
      yearProfit: -50,
      ourYearKg: 0,
      customerYearKg: 0,
      ourYearFee: 0,
      yearRevenue: 500,
      monthKg: 0,
      monthFee: 0,
      monthRevenue: 0,
      monthProfit: 0,
      todayKg: 0,
      todayFee: 0,
      todayRevenue: 0,
      todayProfit: 0,
      lingniuBornKg: 0,
      lingniuBornFee: 0,
    },
    top5: [{ rank: 1, name: 'A', kg: 600, fee: 100, share: 0.6 }],
    regions: [],
    monthly: [
      { month: '2026-01', kg: 100, fee: 20, revenue: 30, profit: 10 },
      { month: '2026-02', kg: 150, fee: 30, revenue: 40, profit: 10 },
    ],
    customers: [],
    stations: [
      { name: 'A', kg: 600, share: 0.6, revenue: 300, revenueShare: 0.6 },
      { name: 'B', kg: 400, share: 0.4, revenue: 200, revenueShare: 0.4 },
    ],
    availableYears: [2026],
    year: 2026,
  } satisfies HydrogenOverviewResponse;

  const metrics = deriveOverviewMetrics(data);
  assert.equal(metrics.monthAvgKg, 125);
  assert.equal(metrics.bestMonth?.month, '2026-02');
  assert.equal(metrics.latestMonth?.month, '2026-02');
  assert.equal(metrics.monthMomentum, 50);
  assert.equal(metrics.top5Share, 60);
  assert.equal(metrics.profitYield, -10);
  assert.equal(metrics.stationAvgKg, 500);
  assert.deepEqual(metrics.monthlyDual.map(item => item.monthLabel), ['1月', '2月']);
});