feat(budget): aylık bütçe motoru, limitler ve ay sonu tahmini

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
2026-11-06 00:58:51 +03:00
parent 6de6d07c66
commit 3fa1e949e2
10 changed files with 1179 additions and 1 deletions
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import { Types } from "mongoose";
import { afterAll, beforeAll, describe, expect, it } from "vitest";
import { createCategory } from "@/features/categories/service";
import { AccountModel } from "@/models/account";
import { BudgetModel } from "@/models/budget";
import { HouseholdModel } from "@/models/household";
import { TransactionModel } from "@/models/transaction";
import { budgetPeriod, shiftMonth } from "@/shared/budget";
import { istanbulDayStart, todayIstanbul } from "@/shared/dates";
import { addDays } from "@/shared/recurrence";
import { budgetLimitsSchema } from "@/shared/schemas/budget";
import { categoryFormSchema } from "@/shared/schemas/category";
import { setupSeededDb, teardownDb } from "@/test/seeded-db";
import { budgetFromActuals, copyPreviousBudget, getBudget, saveBudget } from "./service";
let ids: Awaited<ReturnType<typeof setupSeededDb>>;
let cakir = "";
let ayse = "";
let emre = "";
let zeynep = "";
let fatma = "";
// Seed verisinin olmadığı geçmiş bir ay: toplamlar yalnızca bu testin işlemlerinden oluşur.
const M = shiftMonth(todayIstanbul().slice(0, 7), -24);
const P = shiftMonth(M, -1);
const cat = { ev: "", kira: "", aidat: "", keyif: "" };
type CatKey = keyof typeof cat;
beforeAll(async () => {
ids = await setupSeededDb();
cakir = ids.household("Çakır Ailesi");
ayse = ids.user("ayse");
emre = ids.user("emre");
zeynep = ids.user("zeynep");
fatma = ids.user("fatma");
const mk = async (key: CatKey, name: string, parent = "") => {
const r = await createCategory(
ayse,
cakir,
categoryFormSchema.parse({
kind: "expense",
name,
parentId: parent,
icon: "tag",
color: "blue",
}),
);
cat[key] = r.ok ? r.data.id : "";
};
await mk("ev", "Test Ev");
await mk("kira", "Test Kira", cat.ev);
await mk("aidat", "Test Aidat", cat.ev);
await mk("keyif", "Test Keyif");
});
afterAll(teardownDb);
const acc = (name: string) =>
AccountModel.findOne({ householdId: cakir, name })
.lean()
.then((a) => a!._id);
async function expense(input: {
date: string;
amountMinor: number;
category?: string;
splits?: { category: string; amountMinor: number }[];
account?: string;
status?: "posted" | "planned";
recurring?: boolean;
installment?: { planId: Types.ObjectId; index: number; count: number };
}) {
const actor = new Types.ObjectId(ayse);
const splits = (input.splits ?? []).map((s) => ({
categoryId: new Types.ObjectId(s.category),
amountMinor: s.amountMinor,
}));
await TransactionModel.create({
householdId: new Types.ObjectId(cakir),
type: "expense",
status: input.status ?? "posted",
date: istanbulDayStart(input.date)!,
accountId: await acc(input.account ?? "Cüzdan"),
amountMinor: input.amountMinor,
categoryId: input.category ? new Types.ObjectId(input.category) : null,
splits,
effectiveCategoryIds: input.category
? [new Types.ObjectId(input.category)]
: splits.map((s) => s.categoryId),
recurringRuleId: input.recurring ? new Types.ObjectId() : null,
occurrenceIndex: input.recurring ? 0 : null,
installment: input.installment ?? null,
createdBy: actor,
updatedBy: actor,
});
}
const limits = (month: string, list: Partial<Record<CatKey, string>>) =>
budgetLimitsSchema.parse({
month,
limits: Object.entries(list).map(([k, amount]) => ({ categoryId: cat[k as CatKey], amount })),
});
const line = async (key: CatKey, month = M, user = ayse) =>
(await getBudget(user, cakir, month))!.lines.find((l) => l.categoryId === cat[key]);
describe("aylık bütçe", () => {
const { from, to } = budgetPeriod(M);
it("limitler; üst limit alt kategorileri kapsar; bölünmüş işlem kalem bazında; planlı ayrı", async () => {
await expense({ date: from, amountMinor: 15_000_00, category: cat.kira, recurring: true });
await expense({
date: addDays(from, 5),
amountMinor: 3_000_00,
splits: [
{ category: cat.aidat, amountMinor: 1_200_00 },
{ category: cat.keyif, amountMinor: 1_800_00 },
],
});
await expense({ date: to, amountMinor: 500_00, category: cat.aidat, status: "planned" });
expect((await saveBudget(ayse, cakir, limits(M, { ev: "17.000", kira: "15.000" }))).ok).toBe(
true,
);
const b = (await getBudget(ayse, cakir, M))!;
expect(b.hasBudget).toBe(true);
// Geçmiş ay: tüm günler geçti.
expect(b.elapsedDays).toBe(b.totalDays);
expect(b.totals.limitMinor).toBe(17_000_00);
expect(b.totals.actualMinor).toBe(18_000_00);
expect(b.totals.unbudgetedMinor).toBe(1_800_00);
expect(await line("ev")).toMatchObject({
actualMinor: 16_200_00,
plannedMinor: 500_00,
forecastMinor: 16_700_00,
status: "warning",
forecastOver: false,
});
expect(await line("kira")).toMatchObject({ status: "over", remainingMinor: 0 });
expect(await line("keyif")).toMatchObject({ limitMinor: null, actualMinor: 1_800_00 });
// Boş limit kaldırılır.
await saveBudget(ayse, cakir, limits(M, { ev: "17.000", kira: "" }));
expect((await line("kira"))!.limitMinor).toBeNull();
});
it("gizli hesap harcaması hane ayarına göre", async () => {
const actor = new Types.ObjectId(emre);
const secret = await AccountModel.create({
householdId: new Types.ObjectId(cakir),
name: "Emre Gizli Test",
type: "cash",
openingBalanceMinor: 0,
openingDate: istanbulDayStart(addDays(from, -10))!,
isPrivate: true,
ownerUserId: actor,
createdBy: actor,
updatedBy: actor,
});
await expense({
date: addDays(from, 2),
amountMinor: 700_00,
category: cat.keyif,
account: "Emre Gizli Test",
});
expect((await line("keyif"))!.actualMinor).toBe(2_500_00);
const b = (await getBudget(ayse, cakir, M))!;
expect(b.includesHidden).toBe(true);
await HouseholdModel.updateOne(
{ _id: cakir },
{ $set: { "settings.includePrivateAccountsInTotals": false } },
);
expect((await line("keyif"))!.actualMinor).toBe(1_800_00);
// Sahibi her zaman görür.
expect((await line("keyif", M, emre))!.actualMinor).toBe(2_500_00);
await HouseholdModel.updateOne(
{ _id: cakir },
{ $set: { "settings.includePrivateAccountsInTotals": true } },
);
expect(secret).toBeTruthy();
});
it("taksit modu: her taksit kendi ayına veya tamamı alış ayına", async () => {
const planId = new Types.ObjectId();
const next = budgetPeriod(shiftMonth(M, 1));
await expense({
date: addDays(from, 10),
amountMinor: 1_000_00,
category: cat.aidat,
installment: { planId, index: 1, count: 2 },
});
await expense({
date: addDays(next.from, 10),
amountMinor: 1_000_00,
category: cat.aidat,
installment: { planId, index: 2, count: 2 },
status: "planned",
});
const before = (await line("aidat"))!.actualMinor;
await HouseholdModel.updateOne(
{ _id: cakir },
{ $set: { "settings.installmentBudgetMode": "purchase_month" } },
);
expect((await line("aidat"))!.actualMinor).toBe(before + 1_000_00);
// Tamamı alış ayında sayıldığı için sonraki ayda görünmez.
expect((await line("aidat", shiftMonth(M, 1)))?.actualMinor ?? 0).toBe(0);
await HouseholdModel.updateOne(
{ _id: cakir },
{ $set: { "settings.installmentBudgetMode": "per_installment" } },
);
// Her taksit kendi ayında (geçmiş ay olduğu için vadesi gelen taksit gerçekleşmiştir).
expect((await line("aidat", shiftMonth(M, 1)))!.actualMinor).toBe(1_000_00);
});
it("bütçe ayı başlangıç günü dönemi kaydırır", async () => {
await HouseholdModel.updateOne(
{ _id: cakir },
{ $set: { "settings.budgetMonthStartDay": 15 } },
);
const b = (await getBudget(ayse, cakir, M))!;
expect(b.period).toEqual(budgetPeriod(M, 15));
// Ayın 1'indeki kira artık önceki bütçe ayında.
expect((await line("kira"))?.actualMinor ?? 0).toBe(0);
await HouseholdModel.updateOne({ _id: cakir }, { $set: { "settings.budgetMonthStartDay": 1 } });
});
it("önceki aydan kopyala ve önceki ayın harcamalarından oluştur", async () => {
const N = shiftMonth(M, 1);
expect((await copyPreviousBudget(ayse, cakir, P)).ok).toBe(false);
expect((await copyPreviousBudget(ayse, cakir, N)).ok).toBe(true);
expect((await getBudget(ayse, cakir, N))!.editor.limits[cat.ev]).toBe(17_000_00);
// M'nin harcamaları: Ev kökü 16.200 + taksit 1.000 → 17.200; Keyif 2.500 (gizli dahil).
expect((await budgetFromActuals(ayse, cakir, N)).ok).toBe(true);
const l = (await BudgetModel.findOne({ householdId: cakir, month: N }).lean())!.limits;
const get = (k: CatKey) => l.find((x) => String(x.categoryId) === cat[k])?.amountMinor;
expect(get("ev")).toBe(17_200_00);
expect(get("keyif")).toBe(2_500_00);
expect(get("kira")).toBeUndefined();
expect((await budgetFromActuals(ayse, cakir, shiftMonth(M, -5))).ok).toBe(false);
});
it("yetki: izleyici yazamaz; başka hane göremez; geçersiz kategori reddedilir", async () => {
expect((await getBudget(zeynep, cakir, M))!.canWrite).toBe(false);
expect((await saveBudget(zeynep, cakir, limits(M, { ev: "1" }))).ok).toBe(false);
expect(await getBudget(fatma, cakir, M)).toBeNull();
const annemler = ids.household("Annemler");
expect((await saveBudget(fatma, annemler, limits(M, { ev: "1" }))).ok).toBe(false);
});
});