StarterSaaS Go API

This project contains everything you need to setup a fully featured SaaS API in 5 minutes.

Installation

Copy .env.example into .env and stripe.conf.json.example into stripe.conf.json.

Create a startersaas newtwork typing:

docker network create startersaas-network

Then build the containers

docker compose build

And finally, run the application

docker compose up

Application will be reachable on

http://localhost:3000

Stripe setup

Configure your stripe webhooks by setting as "Endpoint URL" :

https://<my_startersaas_api_domain>/api/v1/stripe/webhook

and events below:

invoice.paid
invoice.payment_failed
customer.subscription.created
customer.subscription.updated

For local development, use the stripe-cli to build a local tunnel:

stripe listen --forward-to localhost:3000/api/v1/stripe/webhook

Finally, configure Stripe to retry failed payments for X days (https://dashboard.stripe.com/settings/billing/automatic Smart Retries section), and then cancel the subscription.

Remember this value, it will be used in the .env file in PAYMENT_FAILED_RETRY_DAYS variable.

Update dependencies

Rin this command:

docker compose run --rm startersaas-go-api go get -u && go mod tidy

Configuring .env

Below the meaning of every environment variable you can setup.

PORT=":3000" the API server port number

CORS_SITES="*" allow only a specific domain to perform Ajax requests

DATABASE="startersaas-db" the MongoDB database

DATABASE_URI="mongodb://localhost:27017" the MongoDB connection string

JWT_SECRET="aaabbbccc" set this value secret, very long and random

JWT_EXPIRE=20 # how many days the JWT token last

FRONTEND_LOGIN_URL="http://localhost:5000/auth/login" raplace http://localhost:5000 with the real production host of the React frontend

MAILER_HOST='localhost' the SMTP server host

MAILER_PORT=1025 the SMTP server port

MAILER_USERNAME='foo' the SMTP server username

MAILER_PASSWORD='bar' the SMTP server password

MAILER_SSL=false, true if the SMTP server uses SSL

DEFAULT_EMAIL_FROM="[email protected]" send every notification email from this address

LOCALE="en" the default locale for registered users

STRIPE_SECRET_KEY="sk_test_xyz" the Stripe secret key

TRIAL_DAYS=15 how many days a new user can work without subscribing

PAYMENT_FAILED_RETRY_DAYS=7 how many days a user can work after the first failed payment (and before Stripe cancel the subscription)

NOTIFIED_ADMIN_EMAIL="[email protected]" we notify this email when some events occur, like a new subscription, a failed payment and so on

SIGNUP_WITH_ACTIVATE=true set this value as true if you want to log the new registered user directly, without asking for email confirmation

STARTER_PLAN_TYPE="starter" set the plan to assign by default to a new customer. Must match one of the plans defined in stripe.conf.json

FRONTEND_CUSTOMER_PORTAL_REDIRECT_URL="http://localhost:3010/dashboard" the URL to forward after actions on Stripe Customer Portal

Docker variables

APP_PORT=3000 the port the API is available in local machine

MONGO_PORT=27017 the port the Database is available in local machine

REDIS_PORT=6379 the port the Redis server is available in local machine

MAILHOG_UI_PORT=8025 the port the Mailhog is available in local machine

Configuring stripe.conf.json

In this file you have to add the stripe API public key, in the publicKey field

Then for every product you want to sell, copy it's price_id (usually starts with price_xxx) and paste it in the "id" key.

{
  "id": "price_XYZ",
  "title": "Starter",
  "price": 4.90,
  "currency": "EUR",
  "features": [
    "1 project",
    "0 tags",
    "star entries",
    "1 user",
    "3 days data retention",
    "no push notifications"
  ],
  "monthly": true,
  "planType": "starter"
}

Then sets its title, its price (in cents, the same you have configured in Stripe) and the list of features you want to show in the frontend pricing table.

Set "monthly":true if your plan is billed on monthly basis, otherwise we consider it billed yearly.

Set "planType" with your plan code to a more user friendly knowledge of the current plan.

Features

API and Frontend

• user registration of account with subdomain, email and password
• user email activation with 6 characters code and account creation
• resend activation code if not received
• user password reset through code sent by email
• user login
• user logout
• user change password once logged in
• account trial period
• edit of account billing information
• subscription creation
• plan change
• add new credit card
• remove credit card
• subscription cancel
• subscription re enable
• 3D Secure ready payments
• subscription handling via Stripe customer portal
• account's users list (by admins only)
• account's user create (by admins only)
• account's user update (by admins only)
• account's user delete (by admins only)
• teams handling

API only

• stripe webhooks handling
• events notifications by email:
  • new user subscribed
  • successful payments
  • failed payments
• daily notifications by email:
  • expiring trials
  • failed payments
  • account suspension due to failed payments

TODO

• signup with Google

CREDITS

Author: Stefano Mancini [email protected]

Company: DevInterface SRL (https://www.devinterface.com)

License

Licensed under the MIT License