@fireact.dev/saas-cloud-functions

@fireact.dev/saas-cloud-functions

Cloud Functions for fireact.dev SaaS applications.

Prerequisites

• Firebase project with Blaze (pay-as-you-go) plan
• Stripe account for payment processing
• Firebase CLI installed (npm install -g firebase-tools)

Installation

Go to your functions folder.

npm install @fireact.dev/saas-cloud-functions

Install the required peer dependencies:

npm install firebase-admin firebase-functions stripe

Setup

1. Initialize Firebase Functions

If you haven't already, initialize Firebase Functions in your project:

firebase init functions

Select TypeScript when prompted.

2. Create saasConfig.json

Create src/saasConfig.json in your functions directory:

{
    "stripe": {
        "secret_api_key": "your_stripe_secret_key",
        "end_point_secret": "your_stripe_webhook_endpoint_secret"
    },
    "emulators": {
        "enabled": false,
        "useTestKeys": false
    },
    "plans": [
        {
            "id": "free",
            "titleKey": "plans.free.title",
            "popular": false,
            "priceIds": [
                "your_stripe_price_id"
            ],
            "currency": "$",
            "price": 0,
            "frequency": "month",
            "descriptionKeys": [
                "plans.free.feature1",
                "plans.free.feature2",
                "plans.free.feature3"
            ],
            "free": true,
            "legacy": false
        }
    ],
    "permissions": {
        "access": {
            "label": "Access",
            "default": true,
            "admin": false
        },
        "admin": {
            "label": "Administrator",
            "default": false,
            "admin": true
        }
    }
}

3. Update index.ts

Create or update your functions' src/index.ts:

import { initializeApp } from 'firebase-admin/app';

// Initialize Firebase Admin
initializeApp();

import type { Plan, Permission } from '@fireact.dev/saas-cloud-functions';
import configFile from './saasConfig.json';

declare global {
    var saasConfig: {
        stripe: {
            secret_api_key: string;
            end_point_secret: string;
        };
        emulators: {
            enabled: boolean;
            useTestKeys: boolean;
        };
        plans: Plan[];
        permissions: Record<string, Permission>;
    };
}

// Initialize global config
global.saasConfig = configFile;

// Import cloud functions after config is initialized
import {
  createSubscription,
  createInvite,
  getSubscriptionUsers,
  acceptInvite,
  rejectInvite,
  revokeInvite,
  removeUser,
  updateUserPermissions,
  stripeWebhook,
  changeSubscriptionPlan,
  cancelSubscription,
  getPaymentMethods,
  createSetupIntent,
  setDefaultPaymentMethod,
  deletePaymentMethod,
  updateBillingDetails,
  getBillingDetails,
  transferSubscriptionOwnership
} from '@fireact.dev/saas-cloud-functions';

// Export cloud functions
export {
  createSubscription,
  createInvite,
  getSubscriptionUsers,
  acceptInvite,
  rejectInvite,
  revokeInvite,
  removeUser,
  updateUserPermissions,
  stripeWebhook,
  changeSubscriptionPlan,
  cancelSubscription,
  getPaymentMethods,
  createSetupIntent,
  setDefaultPaymentMethod,
  deletePaymentMethod,
  updateBillingDetails,
  getBillingDetails,
  transferSubscriptionOwnership
}

Rewrite tsconfig.json as the example below.

{
  "compilerOptions": {
    "module": "commonjs",
    "noImplicitReturns": true,
    "noUnusedLocals": true,
    "outDir": "lib",
    "sourceMap": true,
    "strict": true,
    "target": "es2017",
    "resolveJsonModule": true,
    "esModuleInterop": true
  },
  "compileOnSave": true,
  "include": [
    "src"
  ]
}

4. Stripe Setup

1. Create a Stripe account at https://stripe.com
2. Get your secret API key from the Stripe Dashboard
3. Set up webhook endpoint:
   • Go to Stripe Dashboard > Developers > Webhooks
   • Add endpoint: https://your-region-your-project.cloudfunctions.net/stripeWebhook
   • Select events to listen for:
     • customer.subscription.created
     • customer.subscription.updated
     • customer.subscription.deleted
     • invoice.created
     • invoice.paid
     • invoice.overdue
     • invoice.payment_failed
     • invoice.updated
   • Copy the signing secret to use as end_point_secret in saasConfig.json

5. Deploy to Firebase

1. Build your functions:

npm run build

1. Deploy to Firebase:

firebase deploy --only functions

Available Functions

Subscription Management

• createSubscription - Create a new subscription
• changeSubscriptionPlan - Change subscription plan
• cancelSubscription - Cancel subscription
• transferSubscriptionOwnership - Transfer subscription ownership

User Management

• createInvite - Create user invitation
• acceptInvite - Accept invitation
• rejectInvite - Reject invitation
• revokeInvite - Revoke invitation
• removeUser - Remove user from subscription
• updateUserPermissions - Update user permissions
• getSubscriptionUsers - Get subscription users

Payment Management

• getPaymentMethods - Get payment methods
• createSetupIntent - Create Stripe setup intent
• setDefaultPaymentMethod - Set default payment method
• deletePaymentMethod - Delete payment method
• updateBillingDetails - Update billing details
• getBillingDetails - Get billing details

Webhooks

• stripeWebhook - Handle Stripe webhook events

Testing with Firebase Emulators

1. Update saasConfig.json:

{
    "emulators": {
        "enabled": true,
        "useTestKeys": true
    }
}

1. Start emulators:

firebase emulators:start

Troubleshooting

• Deploy error: functions predeploy error: Command terminated with non-zero exit code 2 To resolve this error, remove "npm --prefix \"$RESOURCE_DIR\" run lint", from the firebase.json file.

License

MIT