feat: Billing Service

apps/api/v2/package.json

@@ -13,7 +13,7 @@
     "dev:build": "yarn workspace @calcom/platform-constants build && yarn workspace @calcom/platform-utils build && yarn workspace @calcom/platform-types build && yarn workspace @calcom/platform-libraries build",
     "dev": "yarn dev:build && docker-compose up -d && yarn copy-swagger-module && yarn start --watch",
     "start:debug": "nest start --debug --watch",
-    "start:prod": "node ./dist/apps/api/v2/src/main.js",
+    "start:prod": "SKIP_DOCS_GENERATION=1 node ./dist/apps/api/v2/src/main.js",
     "test": "yarn dev:build && jest",
     "test:watch": "yarn dev:build && jest --watch",
     "test:cov": "yarn dev:build && jest --coverage",
@@ -40,6 +40,7 @@
     "@nestjs/throttler": "^5.1.2",
     "@sentry/node": "^7.86.0",
     "@sentry/tracing": "^7.86.0",
+    "body-parser": "^1.20.2",
     "class-transformer": "^0.5.1",
     "class-validator": "^0.14.0",
     "cookie-parser": "^1.4.6",
@@ -56,6 +57,7 @@
     "passport-jwt": "^4.0.1",
     "reflect-metadata": "^0.1.13",
     "rxjs": "^7.8.1",
+    "stripe": "^15.3.0",
     "uuid": "^8.3.2",
     "winston": "^3.11.0",
     "zod": "^3.22.4"

apps/api/v2/src/app.module.ts

@@ -1,16 +1,18 @@
-import { AppLoggerMiddleware } from "@/app.logger.middleware";
-import { RewriterMiddleware } from "@/app.rewrites.middleware";
 import appConfig from "@/config/app";
+import { AppLoggerMiddleware } from "@/middleware/app.logger.middleware";
+import { RewriterMiddleware } from "@/middleware/app.rewrites.middleware";
+import { JsonBodyMiddleware } from "@/middleware/body/json.body.middleware";
+import { RawBodyMiddleware } from "@/middleware/body/raw.body.middleware";
 import { AuthModule } from "@/modules/auth/auth.module";
 import { EndpointsModule } from "@/modules/endpoints.module";
 import { JwtModule } from "@/modules/jwt/jwt.module";
 import { PrismaModule } from "@/modules/prisma/prisma.module";
 import { RedisModule } from "@/modules/redis/redis.module";
 import { RedisService } from "@/modules/redis/redis.service";
-import { MiddlewareConsumer, Module, NestModule } from "@nestjs/common";
+import { MiddlewareConsumer, Module, NestModule, RequestMethod } from "@nestjs/common";
 import { ConfigModule } from "@nestjs/config";
 import { RouterModule } from "@nestjs/core";
-import { ThrottlerModule, seconds } from "@nestjs/throttler";
+import { seconds, ThrottlerModule } from "@nestjs/throttler";
 import { ThrottlerStorageRedisService } from "nestjs-throttler-storage-redis";
 
 import { AppController } from "./app.controller";
@@ -53,7 +55,17 @@ import { AppController } from "./app.controller";
 })
 export class AppModule implements NestModule {
   configure(consumer: MiddlewareConsumer): void {
-    consumer.apply(AppLoggerMiddleware).forRoutes("*");
-    consumer.apply(RewriterMiddleware).forRoutes("/");
+    consumer
+      .apply(RawBodyMiddleware)
+      .forRoutes({
+        path: "/api/v2/billing/webhook",
+        method: RequestMethod.POST,
+      })
+      .apply(JsonBodyMiddleware)
+      .forRoutes("*")
+      .apply(AppLoggerMiddleware)
+      .forRoutes("*")
+      .apply(RewriterMiddleware)
+      .forRoutes("/");
   }
 }

apps/api/v2/src/config/app.ts

@@ -24,6 +24,13 @@ const loadConfig = (): AppConfig => {
     next: {
       authSecret: getEnv("NEXTAUTH_SECRET"),
     },
+    stripe: {
+      apiKey: getEnv("STRIPE_API_KEY"),
+      webhookSecret: getEnv("STRIPE_WEBHOOK_SECRET"),
+    },
+    app: {
+      baseUrl: getEnv("WEB_APP_URL", "https://app.cal.com"),
+    },
   };
 };
 

apps/api/v2/src/config/stripe.config.json

@@ -0,0 +1,8 @@
+{
+  "plans": {
+    "ESSENTIALS": "",
+    "STARTER": "",
+    "ENTERPRISE": "",
+    "SCALE": ""
+  }
+}

apps/api/v2/src/config/type.ts

@@ -15,4 +15,11 @@ export type AppConfig = {
   next: {
     authSecret: string;
   };
+  stripe: {
+    apiKey: string;
+    webhookSecret: string;
+  };
+  app: {
+    baseUrl: string;
+  };
 };

apps/api/v2/src/ee/bookings/bookings.module.ts

@@ -1,4 +1,5 @@
 import { BookingsController } from "@/ee/bookings/controllers/bookings.controller";
+import { BillingModule } from "@/modules/billing/billing.module";
 import { OAuthClientRepository } from "@/modules/oauth-clients/oauth-client.repository";
 import { OAuthFlowService } from "@/modules/oauth-clients/services/oauth-flow.service";
 import { PrismaModule } from "@/modules/prisma/prisma.module";
@@ -8,7 +9,7 @@ import { TokensRepository } from "@/modules/tokens/tokens.repository";
 import { Module } from "@nestjs/common";
 
 @Module({
-  imports: [PrismaModule, RedisModule, TokensModule],
+  imports: [PrismaModule, RedisModule, TokensModule, BillingModule],
   providers: [TokensRepository, OAuthFlowService, OAuthClientRepository],
   controllers: [BookingsController],
 })

apps/api/v2/src/ee/bookings/controllers/bookings.controller.ts

@@ -6,6 +6,7 @@ import { GetUser } from "@/modules/auth/decorators/get-user/get-user.decorator";
 import { Permissions } from "@/modules/auth/decorators/permissions/permissions.decorator";
 import { AccessTokenGuard } from "@/modules/auth/guards/access-token/access-token.guard";
 import { PermissionsGuard } from "@/modules/auth/guards/permissions/permissions.guard";
+import { BillingService } from "@/modules/billing/services/billing.service";
 import { OAuthClientRepository } from "@/modules/oauth-clients/oauth-client.repository";
 import { OAuthFlowService } from "@/modules/oauth-clients/services/oauth-flow.service";
 import { PrismaReadService } from "@/modules/prisma/prisma-read.service";
@@ -77,12 +78,13 @@ const DEFAULT_PLATFORM_PARAMS = {
 @UseGuards(PermissionsGuard)
 @DocsTags("Bookings")
 export class BookingsController {
-  private readonly logger = new Logger("ee bookings controller");
+  private readonly logger = new Logger("BookingsController");
 
   constructor(
     private readonly oAuthFlowService: OAuthFlowService,
     private readonly prismaReadService: PrismaReadService,
-    private readonly oAuthClientRepository: OAuthClientRepository
+    private readonly oAuthClientRepository: OAuthClientRepository,
+    private readonly billingService: BillingService
   ) {}
 
   @Get("/")
@@ -153,12 +155,14 @@ export class BookingsController {
       const booking = await handleNewBooking(
         await this.createNextApiBookingRequest(req, oAuthClientId, locationUrl)
       );
+
+      void (await this.billingService.increaseUsageByClientId(oAuthClientId!));
       return {
         status: SUCCESS_STATUS,
         data: booking,
       };
     } catch (err) {
-      handleBookingErrors(err);
+      this.handleBookingErrors(err);
     }
     throw new InternalServerErrorException("Could not create booking.");
   }
@@ -179,7 +183,7 @@ export class BookingsController {
           status: SUCCESS_STATUS,
         };
       } catch (err) {
-        handleBookingErrors(err);
+        this.handleBookingErrors(err);
       }
     } else {
       throw new NotFoundException("Booking ID is required.");
@@ -198,12 +202,15 @@ export class BookingsController {
       const createdBookings: BookingResponse[] = await handleNewRecurringBooking(
         await this.createNextApiBookingRequest(req, oAuthClientId)
       );
+
+      void (await this.billingService.increaseUsageByClientId(oAuthClientId!));
+
       return {
         status: SUCCESS_STATUS,
         data: createdBookings,
       };
     } catch (err) {
-      handleBookingErrors(err, "recurring");
+      this.handleBookingErrors(err, "recurring");
     }
     throw new InternalServerErrorException("Could not create recurring booking.");
   }
@@ -220,17 +227,20 @@ export class BookingsController {
       const instantMeeting = await handleInstantMeeting(
         await this.createNextApiBookingRequest(req, oAuthClientId)
       );
+
+      void (await this.billingService.increaseUsageByClientId(oAuthClientId!));
+
       return {
         status: SUCCESS_STATUS,
         data: instantMeeting,
       };
     } catch (err) {
-      handleBookingErrors(err, "instant");
+      this.handleBookingErrors(err, "instant");
     }
     throw new InternalServerErrorException("Could not create instant booking.");
   }
 
-  async getOwnerId(req: Request): Promise<number | undefined> {
+  private async getOwnerId(req: Request): Promise<number | undefined> {
     try {
       const accessToken = req.get("Authorization")?.replace("Bearer ", "");
       if (accessToken) {
@@ -241,7 +251,7 @@ export class BookingsController {
     }
   }
 
-  async getOAuthClientsParams(req: BookingRequest, clientId: string): Promise<OAuthRequestParams> {
+  private async getOAuthClientsParams(clientId: string): Promise<OAuthRequestParams> {
     const res = DEFAULT_PLATFORM_PARAMS;
     try {
       const client = await this.oAuthClientRepository.getOAuthClient(clientId);
@@ -260,32 +270,32 @@ export class BookingsController {
     }
   }
 
-  async createNextApiBookingRequest(
+  private async createNextApiBookingRequest(
     req: BookingRequest,
     oAuthClientId?: string,
     platformBookingLocation?: string
   ): Promise<NextApiRequest & { userId?: number } & OAuthRequestParams> {
     const userId = (await this.getOwnerId(req)) ?? -1;
     const oAuthParams = oAuthClientId
-      ? await this.getOAuthClientsParams(req, oAuthClientId)
+      ? await this.getOAuthClientsParams(oAuthClientId)
       : DEFAULT_PLATFORM_PARAMS;
     Object.assign(req, { userId, ...oAuthParams, platformBookingLocation });
     req.body = { ...req.body, noEmail: !oAuthParams.arePlatformEmailsEnabled };
     return req as unknown as NextApiRequest & { userId?: number } & OAuthRequestParams;
   }
-}
 
-function handleBookingErrors(err: Error | HttpError | unknown, type?: "recurring" | `instant`): void {
-  const errMsg = `Error while creating ${type ? type + " " : ""}booking.`;
-  if (err instanceof HttpError) {
-    const httpError = err as HttpError;
-    throw new HttpException(httpError?.message ?? errMsg, httpError?.statusCode ?? 500);
-  }
+  private handleBookingErrors(err: Error | HttpError | unknown, type?: "recurring" | `instant`): void {
+    const errMsg = `Error while creating ${type ? type + " " : ""}booking.`;
+    if (err instanceof HttpError) {
+      const httpError = err as HttpError;
+      throw new HttpException(httpError?.message ?? errMsg, httpError?.statusCode ?? 500);
+    }
 
-  if (err instanceof Error) {
-    const error = err as Error;
-    throw new InternalServerErrorException(error?.message ?? errMsg);
-  }
+    if (err instanceof Error) {
+      const error = err as Error;
+      throw new InternalServerErrorException(error?.message ?? errMsg);
+    }
 
-  throw new InternalServerErrorException(errMsg);
+    throw new InternalServerErrorException(errMsg);
+  }
 }

apps/api/v2/src/env.ts

@@ -12,6 +12,9 @@ export type Environment = {
   SENTRY_DSN: string;
   LOG_LEVEL: keyof typeof logLevels;
   REDIS_URL: string;
+  STRIPE_API_KEY: string;
+  STRIPE_WEBHOOK_SECRET: string;
+  WEB_APP_URL: string;
 };
 
 export const getEnv = <K extends keyof Environment>(key: K, fallback?: Environment[K]): Environment[K] => {

apps/api/v2/src/main.ts

@@ -16,14 +16,17 @@ import { loggerConfig } from "./lib/logger";
 const run = async () => {
   const app = await NestFactory.create<NestExpressApplication>(AppModule, {
     logger: WinstonModule.createLogger(loggerConfig()),
+    bodyParser: false,
   });
 
   const logger = new Logger("App");
 
   try {
     bootstrap(app);
     const port = app.get(ConfigService<AppConfig, true>).get("api.port", { infer: true });
-    generateSwagger(app);
+    if (process.env.SKIP_DOCS_GENERATION !== "1") {
+      void generateSwagger(app);
+    }
     await app.listen(port);
     logger.log(`Application started on port: ${port}`);
   } catch (error) {

apps/api/v2/src/middleware/body/json.body.middleware.ts

@@ -0,0 +1,10 @@
+import { Injectable, NestMiddleware } from "@nestjs/common";
+import * as bodyParser from "body-parser";
+import type { Request, Response } from "express";
+
+@Injectable()
+export class JsonBodyMiddleware implements NestMiddleware {
+  use(req: Request, res: Response, next: () => any) {
+    bodyParser.json()(req, res, next);
+  }
+}

apps/api/v2/src/middleware/body/raw.body.middleware.ts

@@ -0,0 +1,10 @@
+import { Injectable, NestMiddleware } from "@nestjs/common";
+import * as bodyParser from "body-parser";
+import type { Request, Response } from "express";
+
+@Injectable()
+export class RawBodyMiddleware implements NestMiddleware {
+  use(req: Request, res: Response, next: () => any) {
+    bodyParser.raw({ type: "*/*" })(req, res, next);
+  }
+}

apps/api/v2/src/modules/billing/billing.module.ts

@@ -0,0 +1,17 @@
+import { BillingRepository } from "@/modules/billing/billing.repository";
+import { BillingController } from "@/modules/billing/controllers/billing.controller";
+import { BillingConfigService } from "@/modules/billing/services/billing.config.service";
+import { BillingService } from "@/modules/billing/services/billing.service";
+import { MembershipsModule } from "@/modules/memberships/memberships.module";
+import { OrganizationsModule } from "@/modules/organizations/organizations.module";
+import { PrismaModule } from "@/modules/prisma/prisma.module";
+import { StripeModule } from "@/modules/stripe/stripe.module";
+import { Module } from "@nestjs/common";
+
+@Module({
+  imports: [PrismaModule, StripeModule, MembershipsModule, OrganizationsModule],
+  providers: [BillingConfigService, BillingService, BillingRepository],
+  exports: [BillingService, BillingRepository],
+  controllers: [BillingController],
+})
+export class BillingModule {}

apps/api/v2/src/modules/billing/billing.repository.ts

@@ -0,0 +1,51 @@
+import { PlatformPlan } from "@/modules/billing/types";
+import { PrismaReadService } from "@/modules/prisma/prisma-read.service";
+import { PrismaWriteService } from "@/modules/prisma/prisma-write.service";
+import { Injectable } from "@nestjs/common";
+
+@Injectable()
+export class BillingRepository {
+  constructor(private readonly dbRead: PrismaReadService, private readonly dbWrite: PrismaWriteService) {}
+
+  getBillingForTeam = (teamId: number) =>
+    this.dbRead.prisma.platformBilling.findUnique({
+      where: {
+        id: teamId,
+      },
+    });
+
+  async findTeamIdFromClientId(clientId: string) {
+    return this.dbRead.prisma.team.findFirstOrThrow({
+      where: {
+        platformOAuthClient: {
+          some: {
+            id: clientId,
+          },
+        },
+      },
+      select: {
+        id: true,
+      },
+    });
+  }
+
+  async updateTeamBilling(
+    teamId: number,
+    billingStart: number,
+    billingEnd: number,
+    plan: PlatformPlan,
+    subscription?: string
+  ) {
+    return this.dbWrite.prisma.platformBilling.update({
+      where: {
+        id: teamId,
+      },
+      data: {
+        billingCycleStart: billingStart,
+        billingCycleEnd: billingEnd,
+        subscriptionId: subscription,
+        plan: plan.toString(),
+      },
+    });
+  }
+}