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.gitignore

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+.env

Gemfile

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+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+gem 'twilio-ruby'
+gem 'dotenv'

Gemfile.lock

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+GEM
+  remote: https://rubygems.org/
+  specs:
+    dotenv (2.5.0)
+    faraday (0.15.3)
+      multipart-post (>= 1.2, < 3)
+    jwt (2.1.0)
+    mini_portile2 (2.3.0)
+    multipart-post (2.0.0)
+    nokogiri (1.8.5)
+      mini_portile2 (~> 2.3.0)
+    twilio-ruby (5.14.1)
+      faraday (~> 0.9)
+      jwt (>= 1.5, <= 2.5)
+      nokogiri (>= 1.6, < 2.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  dotenv
+  twilio-ruby
+
+BUNDLED WITH
+   1.16.6

main.rb

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+require 'dotenv/load'
+require_relative 'services/send_sms'
+
+puts "Enter Phone Number"
+number = gets.chomp!
+
+puts "Enter Message"
+message = gets.chomp!
+
+request = Services::SendSms.call(number, message)
+
+if request.success?
+  puts 'Message sent successfully'
+elsif request.failure?
+  puts request.errors
+end
+
+puts request.success?
+puts request.result
+puts request.result.result.class
+

services/clients/twilio.rb

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+require 'twilio-ruby'
+module Services
+  module Clients
+    class Twilio < Services::Object
+      PHONE_NUMBER = '+18124322807'
+
+      def initialize(recipient, message)
+        @recipient = recipient
+        @message = message
+      end
+
+      def call
+        send_message
+      end
+
+      private
+
+      def send_message
+        account_id = ENV['TWILIO_ACCOUNT_ID']
+        auth_token = ENV['TWILIO_AUTH_TOKEN']
+        @client = ::Twilio::REST::Client.new account_id, auth_token
+        @client.api.account.messages.create(
+          from: PHONE_NUMBER,
+          to: @recipient,
+          body: @message
+        )
+        @client
+      rescue ::Twilio::REST::RestError => error
+        errors.add :sms, error.message
+      end
+    end
+  end
+end

services/common/errors.rb

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+module Services
+  module Common
+    class Errors < Hash
+      def add(key, value, _opts = {})
+        self[key] ||= []
+        self[key] << value
+        self[key].uniq!
+      end
+
+      def add_multiple_errors(errors_hash)
+        errors_hash.each do |key, values|
+          errors_hash[key].each { |value| add key, value }
+        end
+      end
+
+      def each
+        each_key do |field|
+          self[field].each { |message| yield field, message }
+        end
+      end
+    end
+  end
+end

services/object.rb

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+require_relative 'common/errors'
+
+module Services
+  class Object
+    class << self
+      def call(*arg)
+        new(*arg).constructor
+      end
+    end
+
+    attr_reader :result
+    def constructor
+      @result = call
+      self
+    end
+
+    def success?
+      !failure?
+    end
+
+    def failure?
+      errors.any?
+    end
+
+    def errors
+      @errors ||= Services::Common::Errors.new
+    end
+
+    def call
+      fail NotImplementedError unless defined?(super)
+    end
+  end
+end

services/send_sms.rb

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+require_relative 'object'
+require_relative 'clients/twilio'
+
+module Services
+  class SendSms < Services::Object
+    def initialize(recipient, message)
+      @recipient = recipient
+      @message = message
+    end
+
+    def call
+      errors.add :validation, "Missing recipient's number." if @recipient.empty?
+      errors.add :validation, "Missing message to recipient." if @message.empty?
+      send_message unless errors.any?
+    end
+
+    private
+
+    def send_message
+      request = Services::Clients::Twilio.call(@recipient, @message)
+      errors.add_multiple_errors(request.errors) if request.failure?
+      request
+    end
+  end
+end