Vulcan/packages/example-forum/lib/server/seed/seed_posts.js

import { newMutation, registerSetting, getSetting } from 'meteor/vulcan:core';
import moment from 'moment';
import Posts from '../../modules/posts/index.js';
import Comments from '../../modules/comments/index.js';
import Categories from '../../modules/categories/index.js';
import Users from 'meteor/vulcan:users';

registerSetting('forum.seedOnStart', true, 'Seed the app with dummy content on startup');

if (getSetting('seedOnStart')) {

  const dummyFlag = {
    fieldName: 'isDummy',
    fieldSchema: {
      type: Boolean,
      optional: true,
      hidden: true
    }
  }
  Users.addField(dummyFlag);
  Posts.addField(dummyFlag);
  Comments.addField(dummyFlag);

  Posts.addField({
    fieldName: 'dummySlug',
    fieldSchema: {
      type: String,
      optional: true,
      hidden: true // never show this
    }
  });

  var toTitleCase = function (str) {
    return str.replace(/\w\S*/g, function(txt){return txt.charAt(0).toUpperCase() + txt.substr(1).toLowerCase();});
  };

  var createPost = function (slug, postedAt, username, thumbnail) {
    
    const user = Users.findOne({username: username});

    var post = {
      postedAt: postedAt,
      body: Assets.getText("lib/assets/content/" + slug + ".md"),
      title: toTitleCase(slug.replace(/_/g, ' ')),
      dummySlug: slug,
      isDummy: true,
      userId: user._id
    };

    if (typeof thumbnail !== "undefined")
      post.thumbnailUrl = "/packages/example-forum/lib/assets/images/" + thumbnail;

    newMutation({
      collection: Posts, 
      document: post,
      currentUser: user,
      validate: false
    });

  };

  var createComment = function (slug, username, body, parentBody) {

    const user = Users.findOne({username: username});

    var comment = {
      postId: Posts.findOne({dummySlug: slug})._id,
      userId: user._id,
      body: body,
      isDummy: true,
      disableNotifications: true
    };
    var parentComment = Comments.findOne({body: parentBody});
    if (parentComment)
      comment.parentCommentId = parentComment._id;

    newMutation({
      collection: Comments, 
      document: comment,
      currentUser: user,
      validate: false
    });
  };

  const createUser = function (username, email) {
    const user = {
      username,
      email,
      isDummy: true
    };
    newMutation({
      collection: Users, 
      document: user,
      validate: false
    });
  }

  var createDummyUsers = function () {
    console.log('// inserting dummy users…');
    createUser('Bruce', 'dummyuser1@telescopeapp.org');
    createUser('Arnold', 'dummyuser2@telescopeapp.org');
    createUser('Julia', 'dummyuser3@telescopeapp.org');
  };

  var createDummyPosts = function () {
    console.log('// inserting dummy posts');

    createPost("read_this_first", moment().toDate(), "Bruce", "telescope.png");

    createPost("deploying", moment().subtract(10, 'minutes').toDate(), "Arnold");

    createPost("customizing", moment().subtract(3, 'hours').toDate(), "Julia");

    createPost("getting_help", moment().subtract(1, 'days').toDate(), "Bruce", "stackoverflow.png");

    createPost("removing_getting_started_posts", moment().subtract(2, 'days').toDate(), "Julia");

  };

  var createDummyComments = function () {
    console.log('// inserting dummy comments…');

    createComment("read_this_first", "Bruce", "What an awesome app!");

    createComment("deploying", "Arnold", "Deploy to da choppah!");
    createComment("deploying", "Julia", "Do you really need to say this all the time?", "Deploy to da choppah!");

    createComment("customizing", "Julia", "This is really cool!");

    createComment("removing_getting_started_posts", "Bruce", "Yippee ki-yay!");
    createComment("removing_getting_started_posts", "Arnold", "I'll be back.", "Yippee ki-yay!");

  };

  Vulcan.removeGettingStartedContent = () => {
    Users.remove({'profile.isDummy': true});
    Posts.remove({isDummy: true});
    Comments.remove({isDummy: true});
    Categories.remove({isDummy: true});
    console.log('// Getting started content removed');
  };

  Meteor.startup(function () {
    // insert dummy content only if createDummyContent hasn't happened and there aren't any posts or users in the db
    if (!Users.find().count()) {
      createDummyUsers();
    }
    if (!Posts.find().count()) {
      createDummyPosts();
    }
    if (!Comments.find().count()) {
      createDummyComments();
    }
  });

}