[#260] One click deploy to heroku (#275)

* [#260] One click deploy to heroku

* Added app.json file for Heroku deployment
* Made changes in Procfile to accept the PORT as env variable
* Added the one click button in README.md

* Change readme and link

* Alignment of button in Readme

* Changing redis to free plan

* Removed node-js build-pack

* Changed the post-deploy script to be rake db:migrate

* Removed web concurrency variable from app.json for heroku

* Changed the link to chatwoot logo referenced in app.json

* Changed postdeploy hook

* Changed logo to be raw content from github

* Changed the SMTP variables

* Added optional conditional for sending mail
* Changed the naming of SMTP variables

* Having logo as base 64 encoded image for heroku deploy page

* Fixed key not found error for SMTP variables

* Correcting the specs for conversation assignment mailer

* Spec rubocop fixes

* Spec rubocop fixes
* Added the link to master for heroku app.json

.env.example

@@ -3,11 +3,11 @@ FB_VERIFY_TOKEN=
 FB_APP_SECRET=
 FB_APP_ID=
 
-#ses
+#mail
 
-SES_ADDRESS=
-SES_USERNAME=
-SES_PASSWORD=
+SMTP_ADDRESS=
+SMTP_USERNAME=
+SMTP_PASSWORD=
 
 #misc
 FRONTEND_URL=http://localhost:3000

Procfile.dev

@@ -1,2 +1,2 @@
-backend: bin/rails s -p 3000
+backend: bin/rails s -p ${PORT:=3000}
 frontend: bin/webpack-dev-server

README.md

@@ -30,6 +30,12 @@ Detailed documentation is available at [www.chatwoot.com/docs](https://www.chatw
 
 You can find the quick setup docs [here](https://www.chatwoot.com/docs/quick-setup).
 
+## Heroku one-click deploy
+
+Deploying chatwoot to heroku, it's a breeze. It's as simple as clicking this button.
+
+[![Deploy](https://www.herokucdn.com/deploy/button.svg)](https://heroku.com/deploy?template=https://github.com/chatwoot/chatwoot/tree/master)
+
 ## Contributors ✨
 
 Thanks goes to all these [wonderful people](https://www.chatwoot.com/docs/contributors):

app/mailers/assignment_mailer.rb

@@ -3,6 +3,8 @@ class AssignmentMailer < ApplicationMailer
   layout 'mailer'
 
   def conversation_assigned(conversation, agent)
+    return if ENV.fetch('SMTP_ADDRESS', nil).blank?
+
     @agent = agent
     @conversation = conversation
     mail(to: @agent.email, subject: "#{@agent.name}, A new conversation [ID - #{@conversation.display_id}] has been assigned to you.")

config/environments/production.rb

@@ -58,10 +58,10 @@ Rails.application.configure do
   config.action_mailer.perform_caching = false
   config.action_mailer.default_url_options = { :host => ENV['FRONTEND_URL'] }
   config.action_mailer.smtp_settings = {
-    :address => ENV['SES_ADDRESS'],
+    :address => ENV['SMTP_ADDRESS'],
     :port => 587,
-    :user_name => ENV["SES_USERNAME"],
-    :password => ENV["SES_PASSWORD"],
+    :user_name => ENV["SMTP_USERNAME"],
+    :password => ENV["SMTP_PASSWORD"],
     :authentication => :login,
     :enable_starttls_auto => true
   }

config/environments/staging.rb

@@ -58,10 +58,10 @@ Rails.application.configure do
   config.action_mailer.perform_caching = false
   config.action_mailer.default_url_options = { host: ENV['FRONTEND_URL'] }
   config.action_mailer.smtp_settings = {
-    address: ENV['SES_ADDRESS'],
+    address: ENV['SMTP_ADDRESS'],
     port: 587,
-    user_name: ENV['SES_USERNAME'], # Your SMTP user
-    password: ENV['SES_PASSWORD'], # Your SMTP password
+    user_name: ENV['SMTP_USERNAME'], # Your SMTP user
+    password: ENV['SMTP_PASSWORD'], # Your SMTP password
     authentication: :login,
     enable_starttls_auto: true
   }

docker/Procfile.docker.dev

@@ -1,2 +1,2 @@
-backend: ../bin/rails server -b 0.0.0.0 -p 3000
+backend: ../bin/rails server -b 0.0.0.0 -p ${PORT:=3000}
 frontend: ../bin/webpack-dev-server

spec/models/conversation_spec.rb

@@ -67,7 +67,8 @@ RSpec.describe Conversation, type: :model do
 
       # send_email_notification_to_assignee
       expect(AssignmentMailer).to have_received(:conversation_assigned).with(conversation, new_assignee)
-      expect(assignment_mailer).to have_received(:deliver)
+
+      expect(assignment_mailer).to have_received(:deliver) if ENV.fetch('SMTP_ADDRESS', nil).present?
     end
   end