feat: make billing better (#203)

apps/web/src/lib/constants/plans.ts

@@ -0,0 +1,34 @@
+import { Plan } from "@prisma/client";
+
+export enum LimitReason {
+  DOMAIN = "DOMAIN",
+  CONTACT_BOOK = "CONTACT_BOOK",
+  TEAM_MEMBER = "TEAM_MEMBER",
+  EMAIL = "EMAIL",
+}
+
+export const PLAN_LIMITS: Record<
+  Plan,
+  {
+    emailsPerMonth: number;
+    emailsPerDay: number;
+    domains: number;
+    contactBooks: number;
+    teamMembers: number;
+  }
+> = {
+  FREE: {
+    emailsPerMonth: 3000,
+    emailsPerDay: 100,
+    domains: 1,
+    contactBooks: 1,
+    teamMembers: 1,
+  },
+  BASIC: {
+    emailsPerMonth: -1, // unlimited
+    emailsPerDay: -1, // unlimited
+    domains: -1,
+    contactBooks: -1,
+    teamMembers: -1,
+  },
+};

apps/web/src/lib/usage.ts

@@ -1,4 +1,4 @@
-import { EmailUsageType, Plan } from "@prisma/client";
+import { EmailUsageType, Plan, Subscription } from "@prisma/client";
 
 export const USAGE_UNIT_PRICE: Record<EmailUsageType, number> = {
   [EmailUsageType.MARKETING]: 0.001,