Full, runnable src of dPayID can be downloaded as part of the JS tutorials repository.

In this tutorial we will setup dPayID for demo application and step by step show the process of setting up dedicated account for your app to use dPayID Dashboard and setup backend of your application to use dPayID authorization properly.

The application in this tutorial asks the user to grant an access to demo-app and get token from dPayID. Once permission is granted, demo-app can get details of user via an api call that requires access token. Purpose is to allow any application request permission from user and perform action via access token.

Some other calls that require an access token (or login) are:

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Learn more about dPayID operations here

1. dPayID Dashboard Create account for application and set up dashboard
2. Initialize dPayID Initialize SDK in your application code
3. Login URL Form login url for user
4. Request token Request token with login url
5. Set token Set or save token for future requests
6. Get user data Get user details with token
7. Logout Logout user and clear token

dPayID is unified authentication system built on top of dPay built in collaboration of dSocial.io and dPay DAO Layer to ensure easy access and setup for all application developers as well as secure way for users to interact with dPay apps.

Setting up dPayID in your app is straight-forward process and never been this easy.

Here are the steps that helps you to setup new app:

1a. Visit dPayID Dashboard and login with your dPay credentials

1b. You will see Applications and Developers section, in Developers section click on My Apps

1c. Create New App using dPayID, which will help you create new dPay account for your application. Let's call it demo-app for this tutorial purpose.

Account creation fee will be deducted from your balance, make sure you have enough funds to complete account creation.

Next step is to login with account which has enough balance to pay for account creation fee.

1d. Give your app name, description, icon image link, website (if available) and Redirect URI(s)

Application name and description should give users clear understanding what permissions it requires and what is the purpose of the app.

App Icon field should be publicly accessible and available link to your logo or icon.

Website field is homepage for the application if exist.

Redirect URI(s) will be used within your application to forward user after authentication is successful. You can specify multiple callback URLs with each new line. Callback in dPayID SDK should match exactly one of URI(s) specified on this page. Due to security reasons if redirect URI(s) used in SDK is other than you specified, it will not work. This is typical backend web development, we hope you know how to set up your backend/app to handle callback URLs.

• Disclaimer: All images/screenshots of user interface may change as dPayID evolves

Once you have setup account for new application, you can setup application with dPayID authentication and API processes. To do that, you will need to install dpayid nodejs package with npm i dpayid. Within application you can initialize dPayID

app - is account name for application that we have created in Step I.3, callbackURL - is Redirect URI that we have defined in Step I.4, scope - permissions application is requiring/asking from users

Now that dpayid is initialized we can start authentication and perform simple operations with dPayID.

getLoginURL function you see on the right side, returns login URL which will redirect user to sign in with dPay connect screen. Successful login will redirect user to Redirect URI or callbackURL. Result of successful login will return access_token, expires_in and username information, which application will start utilizing.

Application can request returned link into popup screen or relevant screen you have developed. Popup screen will ask user to identify themselves with their username and password. Once login is successful, you will have Results

Returned data has access_token - which will be used in future api calls, expires_in - how long access token is valid in seconds and username of logged in user.

After getting access_token, we can set token for future dPayID API requests.

Users info can be checked with me which will return object account - current state of account and its details on dPay blockchain, name - username, scope - permissions allowed with current login, user - username, user_metadata - additional information user has setup.

In order to logout, you can use revokeToken function from dpayid.

That's all there is to it.

1. clone this repo
2. cd tutorials/02_dpayid
3. npm i
4. npm run dev-server or npm run start
5. After a few moments, the server should be running at http://localhost:3000/