Add the ability to post to services with a tag

app/controllers/services_controller.rb

@@ -28,6 +28,17 @@ class ServicesController < ApplicationController
     end
   end
 
+  def update
+    service = current_user.services.find(params[:id])
+    service.post_tag = params[:service][:post_tag]
+    if service.save
+      flash[:success] = "Service updated successfully"
+    else
+      flash[:error] = "Failed to update service"
+    end
+    redirect_to services_path
+  end
+
   def failure
     Rails.logger.info "oauth error: #{params.inspect}"
     flash[:error] = t('flash.service.failure')

app/helpers/social_helper/twitter_methods.rb

@@ -3,7 +3,7 @@ require 'cgi'
 module SocialHelper::TwitterMethods
   include MarkdownHelper
 
-  def prepare_tweet(answer)
+  def prepare_tweet(answer, post_tag = nil)
     question_content = twitter_markdown answer.question.content.gsub(/\@(\w+)/, '\1')
     original_question_length = question_content.length
     answer_content = twitter_markdown answer.content
@@ -19,8 +19,16 @@ module SocialHelper::TwitterMethods
     tweet_text = ""
 
     until parsed_tweet[:valid]
-      tweet_text = "#{question_content[0..122]}#{'…' if original_question_length > [123, question_content.length].min}" \
-        " — #{answer_content[0..123]}#{'…' if original_answer_length > [124, answer_content.length].min} #{answer_url}"
+      shortened_question = "#{question_content[0..122]}#{'…' if original_question_length > [123, question_content.length].min}"
+      shortened_answer = "#{answer_content[0..123]}#{'…' if original_answer_length > [124, answer_content.length].min}"
+      components = [
+        shortened_question,
+        '—',
+        shortened_answer,
+        post_tag,
+        answer_url
+      ]
+      tweet_text = components.compact.join(' ')
 
       parsed_tweet = Twitter::TwitterText::Validation::parse_tweet(tweet_text)
 

app/models/service.rb

@@ -3,6 +3,7 @@ class Service < ApplicationRecord
 
   belongs_to :user
   validates_uniqueness_of :uid, scope: :type
+  validates_length_of :post_tag, maximum: 20
 
   class << self
 

app/models/services/twitter.rb

@@ -23,6 +23,6 @@ class Services::Twitter < Service
     end
 
     def post_tweet(answer)
-      client.update! prepare_tweet(answer)
+      client.update! prepare_tweet(answer, self.post_tag)
     end
 end

app/views/settings/_services.haml

@@ -20,3 +20,9 @@
             service_path(service),
             data: { confirm: t('views.settings.service.confirm', service: service.provider.capitalize) },
             method: :delete
+
+          .col-md-6.mt-2
+            = bootstrap_form_for(service, as: 'service', url: update_service_path(service)) do |f|
+              = f.text_field :post_tag, class: 'form-control', label: 'tag', label_as_placeholder: true,
+                append: f.submit('Update', class: 'btn btn-primary'), maxlength: 20,
+                help: "Automatically append a tag to your shared answers. #{'A # symbol is not automatically prepended.' if service.provider == 'twitter'}"

config/routes.rb

@@ -77,6 +77,7 @@ Rails.application.routes.draw do
 
   # resources :services, only: [:index, :destroy]
   match '/settings/services', to: 'services#index', via: 'get', as: :services
+  match '/settings/services/:id', to: 'services#update', via: 'patch', as: :update_service
   match '/settings/services/:id', to: 'services#destroy', via: 'delete', as: :service
   controller :services do
     scope "/auth", as: "auth" do

db/migrate/20220104180510_add_post_tag_to_services.rb

@@ -0,0 +1,5 @@
+class AddPostTagToServices < ActiveRecord::Migration[5.2]
+  def change
+    add_column :services, :post_tag, :string, limit: 20
+  end
+end

db/schema.rb

@@ -192,6 +192,7 @@ ActiveRecord::Schema.define(version: 2022_01_05_171216) do
     t.string "nickname"
     t.datetime "created_at"
     t.datetime "updated_at"
+    t.string "post_tag", limit: 20
     t.index ["user_id"], name: "index_services_on_user_id"
   end
 

spec/controllers/services_controller_spec.rb

@@ -38,4 +38,45 @@ describe ServicesController, type: :controller do
       end
     end
   end
+
+  context '#update' do
+    subject { patch :update, params: params }
+
+    context 'not signed in' do
+      let(:params) { { id: 1 } }
+
+      it 'redirects to sign in page' do
+        subject
+        expect(response).to redirect_to(new_user_session_path)
+      end
+    end
+
+    context 'user with Twitter connection' do
+      before { sign_in user }
+
+      let(:user) { FactoryBot.create(:user) }
+      let(:service) { Services::Twitter.create(user: user, uid: 12) }
+      let(:params) { { id: service.id, service: { post_tag: post_tag } } }
+
+      context 'tag is valid' do
+        let(:post_tag) { '#askaraccoon' }
+
+        it 'updates a service connection' do
+          expect { subject }.to change { service.reload.post_tag }.to('#askaraccoon')
+          expect(response).to redirect_to(services_path)
+          expect(flash[:success]).to eq("Service updated successfully")
+        end
+      end
+
+      context 'tag is too long' do
+        let(:post_tag) { 'a' * 21 }  # 1 character over the limit
+
+        it 'shows an error' do
+          subject
+          expect(response).to redirect_to(services_path)
+          expect(flash[:error]).to eq("Failed to update service")
+        end
+      end
+    end
+  end
 end

spec/helpers/social_helper/twitter_methods_spec.rb

@@ -4,9 +4,11 @@ require 'rails_helper'
 
 describe SocialHelper::TwitterMethods, :type => :helper do
   let(:user) { FactoryBot.create(:user) }
+  let(:question_content) { 'q' * 255 }
+  let(:answer_content) { 'a' * 255 }
   let(:answer) { FactoryBot.create(:answer, user: user,
-                                  content: 'a' * 255,
-                                  question_content: 'q' * 255) }
+                                   content: answer_content,
+                                   question_content: question_content) }
 
   before do
     stub_const("APP_CONFIG", {
@@ -25,6 +27,25 @@ describe SocialHelper::TwitterMethods, :type => :helper do
       end
     end
 
+    context 'when a suffix has been passed' do
+      let(:question_content) { 'question' }
+      let(:answer_content) { 'answer' }
+
+      subject { prepare_tweet(answer, '#askracc') }
+
+      it 'should include the suffix after the link' do
+        expect(subject).to eq("question — answer #askracc https://example.com/#{user.screen_name}/a/#{answer.id}")
+      end
+    end
+
+    context 'when a suffix has been passed and the tweet needs to be shortened' do
+      subject { prepare_tweet(answer, '#askracc') }
+
+      it 'should shorten the tweet while keeping the suffix intact' do
+        expect(subject).to eq("#{'q' * 120}… — #{'a' * 120}… #askracc https://example.com/#{user.screen_name}/a/#{answer.id}")
+      end
+    end
+
     context 'when the question and answer are short' do
       before do
         answer.question.content = 'Why are raccoons so good?'