Authetication

How to obtain access token for authenticated API using OAuth 2.0

Introduction

LikeCoin API uses OAuth2.0 flow for API authorization, through the following steps.

1. Users authorize your app through web UIhttps://like.co/in/oauth. For details and params, please refer to like.co OAuth page section below

2. Users are redirected back to a redirect_uri you own with a code, this code is used to exchange for a user access_token and refresh_token.

3. Call APIs using access_token with proper scope. e.g. APIs in Like->info sections requires read:like.info or write:like.info grants.

AVAILABLE SCOPES:

Scope	Description
profile	Basic user public information
email	Access to user's email address

The following scope should be prepended with read: or write:

Scope	Description
(read|write):like	Access to all like related read/write scope
read:like.button	Access to read user like history and suggestions
write:like.button	Permission to like content for user
read:like.info	Access to read user liked authors, content suggestions, etc

TOKEN LIFE TIME

Access tokens expire in 1 hour. Refresh tokens do not expire, unless:

1. Another new refresh token was issued for the same oauth client & user combination

2. User revoked access

3. OAuth client revoked the token via API

1. Format like.co OAuth parameters

https://like.co/in/oauth/?client_id={{CLIENT_ID}}&scope={{scope}}&redirect_uri={{redirectURI}}&state={{state}}

User will navigate to this page to authorize oauth, redirects back to redirect_uri with query paramauth_code and state if success

Param	Description
client_id	OAuth client id
scope	list of scope seperated by space, must be whitelisted, e.g. profile email
redirect_uri	redirect uri in URI compoenent encoded form, must be whitelisted
state	optional state provided by the service, that get passed back after authetication is success. Highly recommended for security reason.

2. Redirect users to the formatted like.co OAuth page

The page will prompt user to either login or register a Liker ID if they are not logged in. Users logged in will then be shown the OAuth client's info and permissions asked. authorization_code and other response will be sent in query string to redirect_uri should users accept the permission, or error denied will be returned instead.

3. Exchange authorization_code for access_token

POST https://api.like.co/oauth/access_token

After user oauth login in client, exchange authorization_code in callback uri for access_token

Headers

Name	Type	Description
Content-Type	string	application/x-www-form-urlencoded

Request Body

Name	Type	Description
client_id	string	OAuth client id
client_secret	string	OAuth client secret
grant_type	string	authorization_code
code	string	The authorization code received in redirect_uri
redirect_uri	string	The redirect_uri param in original request

200 access_token, refresh_token, and user profile in JSON format

{
  "user": "williamchonggoogle",
  "displayName": "William Chong",
  "avatar": "https://storage.googleapis.com/likecoin-develop.appspot.com/likecoin_store_user_williamchonggoogle_test?GoogleAccessId=firebase-adminsdk-b93f2%40likecoin-develop.iam.gserviceaccount.com&Expires=2430432000&Signature=uJzHlCKDU9azuN5jbHVXToc2OsmPqJ0g4Q%2F3fhgJWBVK2f9brU%2FqYkx9ugVyNARugxxyCsfPX5a4jobhpI7jz%2FCy322RHv1TKPPePpQWstD46EhtFXwb8k2Q0HE65%2FO9yK69qvj08hSSvALFwk3oVObKw9D21mN5NLmar%2B9ZSxgl%2BBL%2BBfHp3cDEThZ%2FzMTHKSdOnrsSaH8Nrg7Y0wqzExzpc%2BaA158GDMAeJJwLWznXdrAI6Sd2CLMLW6ER%2FtdlTKQNbOEhiYElRLCC%2FBlS9jAjov7u%2BsifKEc7mADDum2dabBTBG69WusrgT8IrdBq2Hb6l05HI1AeRrlD8jeR5w%3D%3D",
  "refresh_token": "j31UBpMTdt-zaqVrCUJ0Ap8ulbosoPUGS8rVls_QYBg",
  "access_token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VyIjoid2lsbGlhbWNob25nZ29vZ2xlIiwic2NvcGUiOlsicHJvZmlsZSIsInJlYWQ6bGlrZSIsIndyaXRlOmxpa2UiXSwiYXpwIjoiMmY1NTFkNWZlMWFkNjU3NzNhMTciLCJpYXQiOjE1NTIwNDE3NDYsImV4cCI6MTU1MjA0NTM0NiwiYXVkIjoicmlua2VieS5saWtlLmNvIiwiaXNzIjoicmlua2VieS5saWtlLmNvIiwianRpIjoiMGJjN2Q1NGYtOWViYS00ODczLWFiYWUtMzc1ZTczYzExZTMwIn0.BPNsiQb0fs2fFjiSQWUq8oeE4FL_PLebdTRDpSh7n9k"
}

4. Call API with access_token

Call authenticated API with header Authorization valueBearer {{access_token}}