kaiwren/wrest

# frozen_string_literal: true

# Copyright 2009 Sidu Ponnappa

# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software distributed under the License
# is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and limitations under the License.

gem 'wrest'
require 'pp'
require 'wrest'

Wrest.logger = Logger.new($stdout)
Wrest.logger.level = Logger::DEBUG # Set this to Logger::INFO or higher to disable request logging

# This example shows a more object oriented approach
# to accessing Twitter using Wrest.
#
# Twitter is your twitter account. Every tweet is wrapped in
# an instance of Tweet. Every Tweet has one TwitterUser.

class Twitter
  def initialize(options)
    @uri = 'https://twitter.com'.to_uri(options)
  end

  # which can be :friends, :user or :public
  # options[:query] can be things like since, since_id, count, etc.
  def timeline(which = :friends, options = {})
    @uri["/statuses/#{which}_timeline.json"].get(options).deserialise.collect { |tweet| Tweet.new(tweet) }
  end

  def post(text)
    Tweet.new @uri['/statuses/update.json'].post('', { 'User-Agent' => "Wrest/#{Wrest::VERSION}" },
                                                 status: text).deserialise
  end
end

class TwitterUser
  # This will turn this class into a wrapper
  # for the deserialised data from a response.
  #
  # All the keys in the hash are exposed as methods.
  include Wrest::Components::Container

  # We'd prefer the user's profile url to be
  # a Wrest::Uri rather than a String, wouldn't we?
  #
  # Remember, using typecasting _will_
  # slow down instance construction marginally, so turn it on
  # only if you need it.
  typecast url: ->(url) { url.to_uri }
end

class Tweet
  include Wrest::Components::Container

  typecast user: ->(user) { TwitterUser.new(user) }
end

twitter = Twitter.new(username: 'ponnappa', password: 'foobar')

pp twitter.post("This tweet via the Twitter example in #wrest #{Wrest::VERSION}, http://github.com/kaiwren/wrest")

puts '', '*' * 70, ''

tweets = twitter.timeline(:friends, since_id: 20_751_449)

# Print the name of the first user in my timeline.
puts tweets.first.user.name

puts '', '*' * 70, ''

# Just remember that not everyone on Twitter has a
# url. On the other hand, some have more than one.
# This is just a cute little example that deals with
# the simple case of a single url.
puts tweets.first.user.url.get.body