Class: User

Inherits:
Object
  • Object
show all
Defined in:
lib/User.rb

Constant Summary collapse

USER_FOLLOWERS_QUERY_PATH = 
File.expand_path('Queries/UserFollowersQuery.graphql', __dir__).freeze
USER_PROFILE_QUERY_PATH = 
File.expand_path('Queries/UserProfileQuery.graphql', __dir__).freeze

Class Method Summary collapse

Class Method Details

.convertToUserIDFromUsername(username) ⇒ Object 



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# File 'lib/User.rb', line 10

def self.convertToUserIDFromUsername(username)
  username = username[1..] if username.start_with?('@')

  query = [
    {
      "operationName": "UserFollowers",
      "variables": {
        "id": nil,
        "username": username,
        "paging": nil
      },
      "query": userFollowersQueryString
    }
  ]

  host = ENV.fetch('MEDIUM_HOST', 'https://medium.com/_/graphql')
  body = Request.body(Request.URL(host, "POST", query))
  return nil if body.nil?

  json = JSON.parse(body)
  json&.dig(0, "data", "userResult", "id")
end

.extractPosts(json) ⇒ Object

Pulled out so it can be exercised by tests without hitting the network.



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# File 'lib/User.rb', line 56

def self.extractPosts(json)
  nextInfo = json&.dig(0, "data", "userResult", "homepagePostsConnection", "pagingInfo", "next")
  postsInfo = json&.dig(0, "data", "userResult", "homepagePostsConnection", "posts")

  {
    "nextID" => nextInfo && nextInfo["from"],
    "postURLs" => (postsInfo || []).map { |post| { "url" => post["mediumUrl"], "pin" => post["pinnedByCreatorAt"].to_i > 0 } }
  }
end

.fetchUserPosts(userID, from) ⇒ Object 



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# File 'lib/User.rb', line 33

def self.fetchUserPosts(userID, from)
  query = [
    {
      "operationName": "UserProfileQuery",
      "variables": {
        "homepagePostsFrom": from,
        "includeDistributedResponses": true,
        "id": userID,
        "homepagePostsLimit": 10
      },
      "query": userProfileQueryString
    }
  ]

  host = ENV.fetch('MEDIUM_HOST', 'https://medium.com/_/graphql')
  body = Request.body(Request.URL(host, "POST", query))
  return { "nextID" => nil, "postURLs" => [] } if body.nil?

  json = JSON.parse(body)
  extractPosts(json)
end

.userFollowersQueryString ⇒ Object 



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# File 'lib/User.rb', line 66

def self.userFollowersQueryString
  @userFollowersQueryString ||= File.read(USER_FOLLOWERS_QUERY_PATH)
end

.userProfileQueryString ⇒ Object 



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# File 'lib/User.rb', line 70

def self.userProfileQueryString
  @userProfileQueryString ||= File.read(USER_PROFILE_QUERY_PATH)
end