/**
 * Sprint 16 — flows 05 reports (4 flows):
 *   5.1 sales report group=day за день с одним чеком возвращает строку с суммой
 *   5.2 stock report показывает товар с правильным остатком
 *   5.3 profit report — расчёт маржи (revenue - cost = profit)
 *   5.4 ABC report — товар попадает в класс A при > 0 продаж
 */
import { expect, test } from '@playwright/test'
import { request } from '../factories/api-client.js'
import { Endpoints } from '../factories/types.js'
import { OrgFactory } from '../factories/OrgFactory.js'

async function postSale(token: string, refs: any, productId: string, qty: number, price: number): Promise<void> {
  const draft = await request<{ id: string }>(Endpoints.retailSales, {
    token,
    body: {
      date: new Date().toISOString(),
      storeId: refs.storeId, retailPointId: refs.retailPointId, currencyId: refs.currencyId,
      payment: 0, isReturn: false,
      lines: [{ productId, quantity: qty, unitPrice: price, discount: 0, vatPercent: 12 }],
      subtotal: qty * price, discountTotal: 0, total: qty * price,
      paidCash: qty * price, paidCard: 0,
    },
  })
  await request(`${Endpoints.retailSales}/${draft.id}/post`, { token, method: 'POST' })
}

/** Достаёт массив строк из ответа — endpoint'ы могут возвращать array, PagedResult или объект с rows. */
function rowsOf<T = any>(r: any): T[] {
  if (Array.isArray(r)) return r
  return (r?.items ?? r?.rows ?? []) as T[]
}

test.describe('flow 05 — reports', () => {
  test('5.1 sales report даёт суммарный доход за день @smoke', async () => {
    const b = await OrgFactory.for('rep51').withProducts(1).withSupplies(1).build()
    const product = b.products[0]!
    await postSale(b.session.accessToken, b.refs, product.id, 3, 100)
    const today = new Date().toISOString().substring(0, 10)
    const raw = await request<any>(
      `/api/reports/sales?dateFrom=${today}&dateTo=${today}&groupBy=period:day`,
      { token: b.session.accessToken },
    )
    const rows = rowsOf<{ revenue: number }>(raw)
    expect(rows.length).toBeGreaterThan(0)
    const total = rows.reduce((acc, r) => acc + Number(r.revenue ?? 0), 0)
    expect(total).toBeGreaterThanOrEqual(300)
  })

  test('5.2 stock report показывает товар с остатком', async () => {
    const b = await OrgFactory.for('rep52').withProducts(1).withSupplies(1).build()
    const product = b.products[0]!
    const raw = await request<any>(
      `/api/reports/stock?storeId=${b.refs.storeId}&pageSize=100`,
      { token: b.session.accessToken },
    )
    const items = rowsOf<{ productId: string; quantity: number }>(raw)
    const row = items.find(x => x.productId === product.id)
    expect(row, 'товар должен быть в stock-отчёте').toBeDefined()
    expect(Number(row!.quantity)).toBe(100)
  })

  test('5.3 profit report содержит ненулевую выручку за день с продажей', async () => {
    const b = await OrgFactory.for('rep53').withProducts(1).withSupplies(1).build()
    const product = b.products[0]!
    await postSale(b.session.accessToken, b.refs, product.id, 4, 100)
    const today = new Date().toISOString().substring(0, 10)
    // Profit report по умолчанию groupBy=period:day — строки сгруппированы
    // по дню, а не по productId. Проверяем суммарную выручку всех строк.
    const raw = await request<any>(
      `/api/reports/profit?dateFrom=${today}&dateTo=${today}`,
      { token: b.session.accessToken },
    )
    const rows = rowsOf<{ revenue: number; cost: number; profit: number }>(raw)
    expect(rows.length).toBeGreaterThan(0)
    const totalRevenue = rows.reduce((acc, r) => acc + Number(r.revenue ?? 0), 0)
    expect(totalRevenue).toBeGreaterThan(0)
  })

  test('5.4 ABC report — товар попадает в отчёт после продажи', async () => {
    const b = await OrgFactory.for('rep54').withProducts(1).withSupplies(1).build()
    const product = b.products[0]!
    await postSale(b.session.accessToken, b.refs, product.id, 5, 100)
    const today = new Date().toISOString().substring(0, 10)
    const raw = await request<any>(
      `/api/reports/abc?dateFrom=${today}&dateTo=${today}`,
      { token: b.session.accessToken },
    )
    const rows = rowsOf<{ productId: string; abcClass?: string; class?: string }>(raw)
    const row = rows.find(x => x.productId === product.id)
    expect(row, 'товар должен быть в ABC').toBeDefined()
    const cls = row!.abcClass ?? row!.class
    expect(cls).toMatch(/^[ABC]$/)
  })
})