Merge pull request #2 from yamashun/send_message_by_other_than_e-mail

#1 add module for templates other than mail

lib/instantly_mail_changer.rb

@@ -1,5 +1,6 @@
 require "instantly_mail_changer/version"
 require "instantly_mail_changer/config"
+require "instantly_mail_changer/deliverable"
 
 module InstantlyMailChanger
   class Error < StandardError; end

lib/instantly_mail_changer/deliverable.rb

@@ -0,0 +1,46 @@
+module InstantlyMailChanger
+  module Deliverable
+    def self.included(klass)
+      klass.extend ClassMethods
+    end
+
+    module ClassMethods
+      def template_model(template_model)
+        @template_model_class = Object.const_get(template_model.to_s.camelize)
+      end
+
+      def template_columns(*args)
+        args.each do |column_name|
+          define_method "text_#{column_name.to_s}" do
+            generate_template(notice_template.send(column_name), @instance_for_template)
+          end
+        end
+      end
+    end
+
+    private
+
+    def notice_template
+      @notice_template ||= self.class.instance_variable_get("@template_model_class").find(@template_id)
+    end
+
+    def generate_template(template, obj)
+      merge_params(template, obj).each do |key, value|
+        template.gsub!(key, value.to_s)
+      end
+      template
+    end
+
+    def merge_params(body, obj)
+      params = {}
+      body.scan(/%{[\@\w\.]+}/).map do |key|
+        params[key] = nil
+      end
+      return params if params.size == 0
+      params.each do |key, _|
+        params[key] = eval(key[2..-2])
+      end
+      params
+    end
+  end
+end

spec/instantly_mail_changer/deliverable_spec.rb

@@ -0,0 +1,28 @@
+RSpec.describe InstantlyMailChanger::Deliverable do
+  # Dummy classes is defined in 'spec/support/dummy_classes.rb'
+  describe 'class methods' do
+    it 'define template_model_class' do
+      expect(DummySendClass.instance_variable_get('@template_model_class'))
+        .to eq DummyTemplateModel
+    end
+
+    it 'define text_* methods' do
+      send_obj = DummySendClass.new(1, {})
+      expect(send_obj.respond_to?(:text_attr1)).to eq true
+      expect(send_obj.respond_to?(:text_attr2)).to eq true
+    end
+  end
+
+  describe 'instance methods' do
+    DummyObj = Struct.new(:title, :name, :url)
+    let(:template_obj) { DummyObj.new('Weekly', 'Weekly Digest', 'https://foo.bar.com') }
+
+    it 'generate text from template' do
+      send_obj = DummySendClass.new(1, template_obj)
+      expect(send_obj.send_something).to eq({
+        title: 'Weekly Digest',
+        body: 'Topic:Weekly Digest. URL:https://foo.bar.com',
+      })
+    end
+  end
+end

spec/instantly_mail_changer_spec.rb

@@ -31,12 +31,12 @@
         config.mailer_name = 'FlexibleMailer'
         config.title_column = 'mail_subject'
         config.body_column = 'mail_body'
-        config.template_model_name = 'DummyTemplateModel'
+        config.template_model_name = 'DummyMailTemplateModel'
         config.mail_from_name = 'foo'
         config.mail_from = 'bar@co.jp'
       end
 
-      class DummyTemplateModel
+      class DummyMailTemplateModel
         attr_accessor :id, :mail_subject, :mail_body
 
         def initialize(**args)
@@ -64,10 +64,6 @@ def deliver_now
       end
     end
 
-    # after :each do
-    #   remove_classes(DummyTemplateModel)
-    # end
-
     DummyObj = Struct.new(:title, :name, :url)
 
     it "call send_mail and interporate obj's method return values into template" do

spec/spec_helper.rb

@@ -2,6 +2,8 @@
 require "instantly_mail_changer"
 require "action_mailer"
 
+require "support/dummy_classes.rb"
+
 RSpec.configure do |config|
   # Enable flags like --only-failures and --next-failure
   config.example_status_persistence_file_path = ".rspec_status"

spec/support/dummy_classes.rb

@@ -0,0 +1,32 @@
+class DummyTemplateModel
+  attr_accessor :id, :attr1, :attr2
+
+  def initialize(**args)
+    args.each do |key, value|
+      eval("@#{key.to_s} = '#{value}'")
+    end
+  end
+
+  def self.find(id)
+    self.new(id: id, attr1: '%{obj.title} Digest', attr2: 'Topic:%{obj.name}. URL:%{obj.url}')
+  end
+end
+
+class DummySendClass
+  include InstantlyMailChanger::Deliverable
+
+  template_model :dummy_template_model
+  template_columns :attr1, :attr2
+
+  def initialize(template_id, template_obj)
+    @template_id = template_id
+    @instance_for_template = template_obj
+  end
+
+  def send_something
+    {
+      title: text_attr1,
+      body:  text_attr2,
+    }
+  end
+end