Class: MailService

Inherits:
Object
  • Object
show all
Defined in:
lib/service/mail.rb

Constant Summary collapse

@@instance = 
nil

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(smtp_server:, smtp_port:, default_sender:, default_recipients:, retries:) ⇒ MailService

Returns a new instance of MailService.



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# File 'lib/service/mail.rb', line 28

def initialize(smtp_server:, smtp_port:, default_sender:, default_recipients:, retries:)
  @smtp_server = smtp_server
  @smtp_port = smtp_port
  @default_sender = default_sender
  @default_recipients = default_recipients
  @retries = retries

  Mail.defaults do
    delivery_method :smtp, {
      address: smtp_server,
      port: smtp_port,
      openssl_verify_mode: 'none'
    }
  end
end

Instance Attribute Details

#default_recipients ⇒ Object (readonly)

Returns the value of attribute default_recipients.



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# File 'lib/service/mail.rb', line 8

def default_recipients
  @default_recipients
end

#default_sender ⇒ Object (readonly)

Returns the value of attribute default_sender.



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# File 'lib/service/mail.rb', line 8

def default_sender
  @default_sender
end

#retries ⇒ Object (readonly)

Returns the value of attribute retries.



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# File 'lib/service/mail.rb', line 8

def retries
  @retries
end

#smtp_port ⇒ Object (readonly)

Returns the value of attribute smtp_port.



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# File 'lib/service/mail.rb', line 8

def smtp_port
  @smtp_port
end

#smtp_server ⇒ Object (readonly)

Returns the value of attribute smtp_server.



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# File 'lib/service/mail.rb', line 8

def smtp_server
  @smtp_server
end

Class Method Details

.instance ⇒ Object 



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# File 'lib/service/mail.rb', line 12

def self.instance
  return @@instance if @@instance

  smtp_server = ENV['SMTP_SERVER']
  smtp_port = ENV['SMTP_PORT'].to_i
  default_sender = ENV['SMTP_SENDER']
  default_recipients = ENV['SMTP_RECIPIENTS']
  retries = 5

  puts "server #{smtp_server}:#{smtp_port} from: #{default_sender} to:#{default_recipients}"
  @@instance = new(smtp_server:, smtp_port:, default_sender:,
                   default_recipients:, retries:)
end

Instance Method Details

#send(subject:, body:, from: @default_sender, to: @default_recipients, retries: @retries) ⇒ Object 



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# File 'lib/service/mail.rb', line 44

def send(subject:,
         body:,
         from: @default_sender,
         to: @default_recipients,
         retries: @retries)
  message = Mail.new do
    from from
    to to
    subject subject
    html_part do
      content_type 'text/html; charset=UTF-8'
      body body
    end
  end
  puts message

  begin
    message.deliver!
  rescue Net::OpenTimeout, Net::ReadTimeout => e
    if retries > 0
      sleep 5
      send(from:, to:, subject:, retries: retries - 1)
    else
      puts 'Retry limit exceeded. Email not sent.'
    end
  rescue StandardError => e
    puts "Error: #{e.message}"
  end
end