import assert from "node:assert/strict"
import test from "node:test"
import { calculateAccountBalance, CASHBOOK_BANK_ID } from "../src/modules/bank-balances.service"

const syncedAt = new Date("2026-10-20T08:00:00Z")
const bank = { id: 1, name: "Giro", iban: "DE00", ownerName: null, bankId: "bank", datevNumber: "1200", balance: 1000.1, expired: false, syncedAt }
const cashbook = { ...bank, id: 2, name: "Kasse", iban: "CASH-1", bankId: CASHBOOK_BANK_ID, datevNumber: "1000", balance: 50 }

test("bank accounts report the synced balance and revert later statements for a past date", () => {
    assert.equal(calculateAccountBalance(bank, 0, null).balance, 1000.1)
    assert.equal(calculateAccountBalance(bank, 0, null).source, "bank_sync")
    const past = calculateAccountBalance(bank, -200.05, "2026-10-01")
    assert.equal(past.balance, 1200.15)
    assert.equal(past.syncedBalance, 1000.1)
    assert.equal(past.source, "bank_sync_reconstructed")
})

test("cashbooks add their bookings to the opening balance", () => {
    const result = calculateAccountBalance(cashbook, 12.345, null)
    assert.equal(result.type, "cashbook")
    assert.equal(result.balance, 62.35)
    assert.equal(result.openingBalance, 50)
    assert.equal(result.iban, null)
})