import assert from 'node:assert/strict';
import test from 'node:test';
import type { ElectricMonthGroup } from '../types';
import { summarizeElectricMonths } from './model';

test('electric daily summary preserves totals, active-day and 30 percent boundaries', () => {
  const months: ElectricMonthGroup[] = [
    {
      month: '2026-08',
      kwh: 150,
      fee: 75,
      rows: [
        { date: '2026-08-01', kwh: 100, fee: 50, chainPct: 0.3 },
        { date: '2026-08-02', kwh: 50, fee: 25, chainPct: -0.29 },
        { date: '2026-08-03', kwh: 0, fee: 0, chainPct: -1 },
      ],
    },
  ];

  assert.deepEqual(summarizeElectricMonths(months), {
    totalKwh: 150,
    totalFee: 75,
    activeDays: 2,
    abnormalDays: 2,
    avgKwh: 75,
    avgPrice: 0.5,
    hasFeeDetail: true,
  });
});

test('electric daily summary preserves empty and missing-fee fallbacks', () => {
  assert.deepEqual(summarizeElectricMonths(null), {
    totalKwh: 0,
    totalFee: 0,
    activeDays: 0,
    abnormalDays: 0,
    avgKwh: 0,
    avgPrice: 0,
    hasFeeDetail: false,
  });
});