introduce TRPC and service layer

lib/services/user.service.ts

@@ -0,0 +1,47 @@
+import { PrismaClient } from '@prisma/client';
+import { UtilService } from './util.service';
+
+const TRIAL_PLAN_NAME = '3 Month Trial';  // TODO - some sort of config.. this will change for every use of the boilerplate
+
+export default class UserService {
+  private prisma: PrismaClient;
+
+  constructor( prisma: PrismaClient) {
+    this.prisma = prisma;
+  }
+
+  async getUserBySupabaseId(supabase_uid: string) {
+    return this.prisma.user.findFirst({ where: { supabase_uid }, include: { membership: true } });
+  }
+
+  async getUserById(id: number) {
+    return this.prisma.user.findFirstOrThrow({ where: { id }, include: { membership: true } });
+  }
+
+  async createUser( supabase_uid: string, display_name: string ) {
+    const trialPlan = await this.prisma.plan.findFirstOrThrow({ where: { name: TRIAL_PLAN_NAME}});
+    return this.prisma.user.create({
+      data:{
+        supabase_uid: supabase_uid,
+        display_name: display_name,
+        membership: {
+          create: {
+            account: {
+              create: {
+                plan_id: trialPlan.id,  
+                name: display_name,
+                features: trialPlan.features, //copy in features from the plan, plan_id is a loose association and settings can change independently
+                current_period_ends: UtilService.addMonths(new Date(),3),                  
+              }
+            }
+          }
+        }
+      },
+      include: { membership: true },
+    });
+  }
+
+  async deleteUser(id: number) {
+    return this.prisma.user.delete({ where: { id } });
+  }
+}