initial project setup

Fastify + Prisma backend, React + Vite frontend, Docker deployment.
Multi-board feedback platform with anonymous cookie auth, passkey
upgrade path, ALTCHA spam protection, plugin system, and full
privacy-first architecture.

packages/api/src/lib/budget.ts

@@ -0,0 +1,74 @@
+import { PrismaClient } from "@prisma/client";
+
+const prisma = new PrismaClient();
+
+export function getCurrentPeriod(resetSchedule: string): string {
+  const now = new Date();
+  const year = now.getFullYear();
+  const month = String(now.getMonth() + 1).padStart(2, "0");
+
+  switch (resetSchedule) {
+    case "weekly": {
+      const startOfYear = new Date(year, 0, 1);
+      const days = Math.floor((now.getTime() - startOfYear.getTime()) / 86400000);
+      const week = Math.ceil((days + startOfYear.getDay() + 1) / 7);
+      return `${year}-W${String(week).padStart(2, "0")}`;
+    }
+    case "quarterly": {
+      const q = Math.ceil((now.getMonth() + 1) / 3);
+      return `${year}-Q${q}`;
+    }
+    case "yearly":
+      return `${year}`;
+    case "never":
+      return "lifetime";
+    case "monthly":
+    default:
+      return `${year}-${month}`;
+  }
+}
+
+export async function getRemainingBudget(userId: string, boardId: string): Promise<number> {
+  const board = await prisma.board.findUnique({ where: { id: boardId } });
+  if (!board) return 0;
+
+  if (board.voteBudgetReset === "never" && board.voteBudget === 0) {
+    return Infinity;
+  }
+
+  const period = getCurrentPeriod(board.voteBudgetReset);
+
+  const used = await prisma.vote.aggregate({
+    where: { voterId: userId, post: { boardId }, budgetPeriod: period },
+    _sum: { weight: true },
+  });
+
+  const spent = used._sum.weight ?? 0;
+  return Math.max(0, board.voteBudget - spent);
+}
+
+export function getNextResetDate(resetSchedule: string): Date {
+  const now = new Date();
+
+  switch (resetSchedule) {
+    case "weekly": {
+      const d = new Date(now);
+      d.setDate(d.getDate() + (7 - d.getDay()));
+      d.setHours(0, 0, 0, 0);
+      return d;
+    }
+    case "quarterly": {
+      const q = Math.ceil((now.getMonth() + 1) / 3);
+      return new Date(now.getFullYear(), q * 3, 1);
+    }
+    case "yearly":
+      return new Date(now.getFullYear() + 1, 0, 1);
+    case "never":
+      return new Date(8640000000000000); // max date
+    case "monthly":
+    default: {
+      const d = new Date(now.getFullYear(), now.getMonth() + 1, 1);
+      return d;
+    }
+  }
+}