feat(web): Next.js 15 app shell, auth, i18n, base UI

App Router setup with next-intl (en/fr), Better Auth wiring, shadcn/ui components, Tailwind, AES-256-GCM encrypt util, Redis rate limiter, tier limit checker, site_settings helper for runtime .env overrides.
2026-07-01 08:09:31 +02:00
parent add9365250
commit 5b40968c9d
50 changed files with 4274 additions and 0 deletions
@@ -0,0 +1,82 @@
+import { db } from "@epicure/db";
+import { tierDefinitions, userUsage } from "@epicure/db";
+import { eq, and, sql } from "@epicure/db";
+
+function currentMonth() {
+  const now = new Date();
+  return `${now.getFullYear()}-${String(now.getMonth() + 1).padStart(2, "0")}`;
+}
+
+export type LimitKey = "recipe" | "aiCall" | "storage";
+
+export class TierLimitError extends Error {
+  constructor(public readonly limit: LimitKey, public readonly tier: string) {
+    super(`Tier limit reached: ${limit} (tier: ${tier})`);
+    this.name = "TierLimitError";
+  }
+}
+
+export async function checkTierLimit(
+  userId: string,
+  userTier: "free" | "pro",
+  key: LimitKey
+): Promise<void> {
+  const [tierDef] = await db
+    .select()
+    .from(tierDefinitions)
+    .where(eq(tierDefinitions.tier, userTier));
+
+  if (!tierDef) return;
+
+  const month = currentMonth();
+  const [usage] = await db
+    .select()
+    .from(userUsage)
+    .where(and(eq(userUsage.userId, userId), eq(userUsage.month, month)));
+
+  const current = usage ?? {
+    aiCallsUsed: 0,
+    recipeCount: 0,
+    storageUsedMb: 0,
+  };
+
+  if (key === "recipe" && current.recipeCount >= tierDef.maxRecipes) {
+    throw new TierLimitError("recipe", userTier);
+  }
+  if (key === "aiCall" && current.aiCallsUsed >= tierDef.aiCallsPerMonth) {
+    throw new TierLimitError("aiCall", userTier);
+  }
+}
+
+export async function incrementUsage(
+  userId: string,
+  key: LimitKey,
+  amount = 1
+): Promise<void> {
+  const month = currentMonth();
+  const id = `${userId}-${month}`;
+
+  const initialValues = {
+    id,
+    userId,
+    month,
+    aiCallsUsed: key === "aiCall" ? amount : 0,
+    recipeCount: key === "recipe" ? amount : 0,
+    storageUsedMb: key === "storage" ? amount : 0,
+  };
+
+  const incrementSet =
+    key === "aiCall"
+      ? { aiCallsUsed: sql`${userUsage.aiCallsUsed} + ${amount}` }
+      : key === "recipe"
+        ? { recipeCount: sql`${userUsage.recipeCount} + ${amount}` }
+        : { storageUsedMb: sql`${userUsage.storageUsedMb} + ${amount}` };
+
+  await db
+    .insert(userUsage)
+    .values(initialValues)
+    .onConflictDoUpdate({
+      target: [userUsage.userId, userUsage.month],
+      set: incrementSet,
+    });
+}