added api logic, vitest, minimal testing ui

api/prisma/seed.ts

@@ -0,0 +1,85 @@
+/// <reference types="node" />
+import { PrismaClient } from "@prisma/client";
+import { allocateIncome } from "../src/allocator.ts"; // adjust if your path differs
+
+const prisma = new PrismaClient();
+const cents = (dollars: number) => BigInt(Math.round(dollars * 100));
+
+async function main() {
+  const userId = "demo-user-1"; // dev-only, string id per schema
+
+  // 1) User
+  await prisma.user.upsert({
+    where: { id: userId },
+    create: { id: userId, email: "demo@example.com" },
+    update: {},
+  });
+
+  // 2) Variable categories (sum = 100)
+  const categories = [
+    { name: "Savings", percent: 40, isSavings: true,  priority: 10 },
+    { name: "Needs",   percent: 40, isSavings: false, priority: 20 },
+    { name: "Wants",   percent: 20, isSavings: false, priority: 30 },
+  ];
+
+  for (const c of categories) {
+    await prisma.variableCategory.upsert({
+      where: { userId_name: { userId, name: c.name } },
+      create: { userId, name: c.name, percent: c.percent, isSavings: c.isSavings, priority: c.priority, balanceCents: 0n },
+      update: { percent: c.percent, isSavings: c.isSavings, priority: c.priority },
+    });
+  }
+
+  // 3) Fixed plans
+  const today = new Date();
+  const monthStart = new Date(today.getFullYear(), today.getMonth(), 1);
+  const dueNext = new Date(today.getFullYear(), today.getMonth(), 1);
+  dueNext.setMonth(dueNext.getMonth() + 1);
+
+  const plans = [
+    { name: "Rent",      total: cents(1200), priority: 10, cycleStart: monthStart, dueOn: dueNext },
+    { name: "Utilities", total: cents(300),  priority: 20, cycleStart: monthStart, dueOn: dueNext },
+  ];
+
+  for (const p of plans) {
+    await prisma.fixedPlan.upsert({
+      where: { userId_name: { userId, name: p.name } },
+      create: {
+        userId, name: p.name,
+        totalCents: p.total, fundedCents: 0n,
+        priority: p.priority, cycleStart: p.cycleStart, dueOn: p.dueOn,
+        fundingMode: "auto-on-deposit"
+      },
+      update: {
+        totalCents: p.total, priority: p.priority,
+        cycleStart: p.cycleStart, dueOn: p.dueOn
+      },
+    });
+  }
+
+  // 4) Seed income + allocate
+  const deposit = 2500; // dollars
+  const nowISO = new Date().toISOString();
+
+  const income = await prisma.incomeEvent.create({
+    data: { userId, postedAt: new Date(nowISO), amountCents: cents(deposit) },
+    select: { id: true },
+  });
+
+  const result = await allocateIncome(
+    prisma,         // db
+    userId,         // user id (string)
+    Math.round(deposit * 100), // depositCentsNum (number is fine)
+    nowISO,         // ISO timestamp
+    income.id       // incomeEventId (string)
+  );
+
+  console.log("Seed complete\n", JSON.stringify(result, null, 2));
+}
+
+main().catch((e) => {
+  console.error(e);
+  process.exit(1);
+}).finally(async () => {
+  await prisma.$disconnect();
+});