New Comments by User from Reddit API

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New Comments by User from the Reddit API

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Getting Started#

Trigger a workflow on New Comments by User with Reddit API. When you configure and deploy the workflow, it will run on Pipedream's servers 24x7 for free.

Configure the New Comments by User trigger
1. Connect your Reddit account
2. Configure Polling schedule
3. Configure Username
4. Optional- Configure Number of parents
5. Optional- Select a Time filter
6. Optional- Configure Include subreddit details?
Add steps to connect to 2,500+ APIs using code and no-code building blocks
Deploy the workflow
Send a test event to validate your setup
Turn on the trigger

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Details#

This is a pre-built, source-available component from Pipedream's GitHub repo. The component is developed by Pipedream and the community, and verified and maintained by Pipedream.

To contribute an update to an existing component or create a new component, create a PR on GitHub. If you're new to Pipedream component development, you can start with quickstarts for trigger span and action development, and then review the component API reference.

New Comments by User on Reddit

Description:Emit new event each time a user posts a new comment.

Version:0.1.0

Key:reddit-new-comments-by-user

View on GitHub

Code#

import common from "../common.mjs";
const { reddit } = common.props;

export default {
  ...common,
  type: "source",
  key: "reddit-new-comments-by-user",
  name: "New Comments by User",
  description: "Emit new event each time a user posts a new comment.",
  version: "0.1.0",
  dedupe: "unique",
  props: {
    ...common.props,
    username: {
      propDefinition: [
        reddit,
        "username",
      ],
    },
    numberOfParents: {
      type: "integer",
      label: "Number of parents",
      description:
        "The emitted events will contain the new comment plus the parents of said comment up to the number indicated in this property.",
      optional: true,
      min: 2,
      max: 10,
      default: 2,
    },
    timeFilter: {
      propDefinition: [
        reddit,
        "timeFilter",
      ],
    },
    includeSubredditDetails: {
      propDefinition: [
        reddit,
        "includeSubredditDetails",
      ],
    },
  },
  hooks: {
    async deploy() {
      // Emits sample events on the first run during deploy.
      var redditComments = await this.reddit.getNewUserComments(
        null,
        this.username,
        this.numberOfParents,
        this.timeFilter,
        this.includeSubredditDetails,
        10,
      );
      const { children: comments = [] } = redditComments.data;
      if (comments.length === 0) {
        console.log("No data available, skipping iteration");
        return;
      }
      const { name = this._getBefore() } = comments[0].data;
      this._setBefore(name);
      const {
        cache,
        keys,
      } = this.getAllCommentsData(comments);
      this._setCache(cache);
      this._setKeys(keys);
      comments.reverse().forEach(this.emitRedditEvent);
    },
  },
  methods: {
    ...common.methods,
    generateEventMetadata(redditEvent) {
      return {
        id: redditEvent.data.name,
        summary: redditEvent.data.body,
        ts: redditEvent.data.created,
      };
    },
    async isBeforeValid(before, cache) {
      // verify this comment still exists as a comment by this user
      const res = await this.reddit.getComment(cache[before]);
      const author = res[1]?.data?.children[0]?.data?.author;
      return author === this.username;
    },
    getCommentData(comment) {
      return {
        name: comment?.data?.name,
        id: comment?.data?.id,
        article: comment?.data?.link_id.slice(3),
        subreddit: comment?.data?.subreddit,
      };
    },
    getAllCommentsData(comments) {
      const cache = this._getCache();
      const keys = this._getKeys();
      comments.reverse().forEach((comment) => {
        cache[comment?.data?.name] = this.getCommentData(comment);
        keys.push(comment?.data?.name);
      });
      return {
        cache,
        keys,
      };
    },
  },
  async run() {
    let redditComments;
    const {
      cache: previousEmittedEvents,
      keys,
    } = await this.validateBefore(this._getCache(),
      this._getBefore(),
      this._getKeys());
    do {
      redditComments = await this.reddit.getNewUserComments(
        this._getBefore(),
        this.username,
        this.numberOfParents,
        this.timeFilter,
        this.includeSubredditDetails,
      );
      const { children: comments = [] } = redditComments.data;
      if (comments.length === 0) {
        console.log("No data available, skipping iteration");
        break;
      }
      const { name = this._getBefore() } = comments[0].data;
      this._setBefore(name);

      comments.reverse().forEach((comment) => {
        if (!previousEmittedEvents[comment.data.name]) {
          previousEmittedEvents[comment.data.name] = this.getCommentData(comment);
          keys.push(comment.data.name);
          this.emitRedditEvent(comment);
        }
      });
    } while (redditComments);
    this._setCache(previousEmittedEvents);
    this._setKeys(keys);
  },
};

Configuration#

This component may be configured based on the props defined in the component code. Pipedream automatically prompts for input values in the UI and CLI.

Label	Prop	Type	Description
Reddit	`reddit`	`app`	This component uses the Reddit app.
N/A	`db`	`$.service.db`	This component uses `$.service.db` to maintain state between executions.
Polling schedule	`timer`	`$.interface.timer`	Pipedream polls Reddit for events on this schedule.
Username	`username`	`string`	The username you'd like to watch.
Number of parents	`numberOfParents`	`integer`	The emitted events will contain the new comment plus the parents of said comment up to the number indicated in this property.
Time filter	`timeFilter`	`string`	Select a value from the drop down menu:`hourdayweekmonthyearall`
Include subreddit details?	`includeSubredditDetails`	`boolean`	If set to `true`, subreddit details will be expanded/included.

Authentication#

Reddit uses OAuth authentication. When you connect your Reddit account, Pipedream will open a popup window where you can sign into Reddit and grant Pipedream permission to connect to your account. Pipedream securely stores and automatically refreshes the OAuth tokens so you can easily authenticate any Reddit API.

Pipedream requests the following authorization scopes when you connect your account:

accountidentityedithistoryreadsubmitmysubredditssubscribe