Merge pull request #447 from FormidableLabs/chore/slack-example

Add a config example for Slack

Author: Kadi Kraman

README.md

@@ -40,6 +40,7 @@ These providers implement the OAuth2 spec, but are not OpenID providers, which m
 - [Reddit](https://github.com/reddit-archive/reddit/wiki/oauth2) ([Example configuration](./docs/config-examples/reddit.md))
 - [Coinbase](https://developers.coinbase.com/docs/wallet/coinbase-connect/integrating) ([Example configuration](./docs/config-examples/coinbase.md))
 - [GitHub](https://developer.github.com/apps/building-oauth-apps/authorizing-oauth-apps/) ([Example configuration](./docs/config-examples/github.md))
+- [Slack](https://api.slack.com/authentication/oauth-v2) ([Example configuration](./docs/config-examples/slack.md))
 
 ## Why you may want to use this library
 

docs/config-examples/slack.md

@@ -0,0 +1,26 @@
+# Slack
+
+If you don't already have a slack app, create it [here](https://api.slack.com/apps).
+
+Once you have an app, go "Add features and functionality" => "Permissions". Here you'll need to add two things:
+
+1. Redirect URL
+   Under "Redirect URLs", add one for your app, e.g. `com.myapp://oauth` and save
+
+2. Scopes
+   Under "Scopes", add the scopes you want to request from the user, e.g, "emoji:read"
+
+```js
+const config = {
+  clientId: '<client_id>', // found under App Credentials
+  clientSecret: '<client_secret>', // found under App Credentials
+  scopes: ['emoji:read'], // choose any of the scopes set up in step 1
+  redirectUrl: 'com.myapp://oauth', // set up in step 2
+  serviceConfiguration: {
+    authorizationEndpoint: 'https://slack.com/oauth/authorize',
+    tokenEndpoint: 'https://slack.com/api/oauth.access',
+  },
+};
+
+const authState = await authorize(config);
+```