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Add auth support to [Reddit] badges (#10790)
* Add auth support to [Reddit] badges * Simplify token response schema
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,89 @@ | ||
| import Joi from 'joi' | ||
| import { BaseJsonService } from '../index.js' | ||
|
|
||
| const tokenSchema = Joi.object({ | ||
| access_token: Joi.string().required(), | ||
| expires_in: Joi.number(), | ||
| }) | ||
|
|
||
| // Abstract class for Reddit badges | ||
| // Authorization flow based on https://github.com/reddit-archive/reddit/wiki/OAuth2#application-only-oauth. | ||
| export default class RedditBase extends BaseJsonService { | ||
| static category = 'social' | ||
|
|
||
| static auth = { | ||
| userKey: 'reddit_client_id', | ||
| passKey: 'reddit_client_secret', | ||
| authorizedOrigins: ['https://www.reddit.com'], | ||
| isRequired: false, | ||
| } | ||
|
|
||
| constructor(...args) { | ||
| super(...args) | ||
| if (!RedditBase._redditToken && this.authHelper.isConfigured) { | ||
| RedditBase._redditToken = this._getNewToken() | ||
| } | ||
| } | ||
|
|
||
| async _getNewToken() { | ||
| const tokenRes = await super._requestJson( | ||
| this.authHelper.withBasicAuth({ | ||
| schema: tokenSchema, | ||
| url: 'https://www.reddit.com/api/v1/access_token', | ||
| options: { | ||
| method: 'POST', | ||
| body: 'grant_type=client_credentials', | ||
| }, | ||
| httpErrors: { | ||
| 401: 'invalid token', | ||
| }, | ||
| }), | ||
| ) | ||
|
|
||
| // replace the token when we are 80% near the expire time | ||
| // 2147483647 is the max 32-bit value that is accepted by setTimeout(), it's about 24.9 days | ||
| const replaceTokenMs = Math.min( | ||
| tokenRes.expires_in * 1000 * 0.8, | ||
| 2147483647, | ||
| ) | ||
| const timeout = setTimeout(() => { | ||
| RedditBase._redditToken = this._getNewToken() | ||
| }, replaceTokenMs) | ||
|
|
||
| // do not block program exit | ||
| timeout.unref() | ||
|
|
||
| return tokenRes.access_token | ||
| } | ||
|
|
||
| async _requestJson(request) { | ||
| if (!this.authHelper.isConfigured) { | ||
| return super._requestJson(request) | ||
| } | ||
|
|
||
| request = await this.addBearerAuthHeader(request) | ||
| try { | ||
| return await super._requestJson(request) | ||
| } catch (err) { | ||
| if (err.response && err.response.statusCode === 401) { | ||
| // if the token is expired or has been revoked, retry once | ||
| RedditBase._redditToken = this._getNewToken() | ||
| request = await this.addBearerAuthHeader(request) | ||
| return super._requestJson(request) | ||
| } | ||
| // cannot recover | ||
| throw err | ||
| } | ||
| } | ||
|
|
||
| async addBearerAuthHeader(request) { | ||
| return { | ||
| ...request, | ||
| options: { | ||
| headers: { | ||
| Authorization: `Bearer ${await RedditBase._redditToken}`, | ||
| }, | ||
| }, | ||
| } | ||
| } | ||
| } |
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