# -----------------------------------------------------------------------
#  Copyright © 2012 ShepHertz Technologies Pvt Ltd. All rights reserved.
# -----------------------------------------------------------------------

require 'rubygems'
require 'connection/RESTConnection'
require 'util/util'
require 'json/pure'
require 'App42_Ruby_API/App42Response'
require 'email/EmailResponseBuilder'
require 'email/Email'

module App42
  module Email
    #
    # This Service is used to send Emails. This service can be used by app to send mail to one or multiple recipients.
    #
    # @see Email
    #
    class EmailService
      #
      # this is a constructor that takes
      #
      # @param apiKey
      # @param secretKey
      # @param baseURL
      #
      def initialize(api_key, secret_key, base_url)
        puts "EmailService->initialize"
        @api_key = api_key
        @secret_key = secret_key
        @base_url = base_url
        @resource = "email"
        @version = "1.0"
      end

      #
      # Creates Email Configuration using which in future the App developer can send mail
      #
      # @param emailHost
      #       - Email Host to be used for sending mail
      # @param emailPort
      #      - Email Port to be used for sending mail
      # @param mailId
      #      - Email id to be used for sending mail
      # @param emailPassword
      #       - Email Password to be used for sending mail
      # @param isSSL
      #       - Should be send using SSL or not
      #
      # @return Email object containing the email configuration which has been created
      #
      # @raise App42Exception
      #

      def create_mail_configuration(emailHost, emailPort, mailId, emailPassword, isSSL)
        puts "create Mail Configuration Called "
        puts "Base url #{@base_url}"
        response = nil;
        emailObj = nil;
        emailObj = Email.new
        util = Util.new
        util.throwExceptionIfNullOrBlank(emailHost, "Host");
        util.throwExceptionIfNullOrBlank(emailPort, "Port");
        util.throwExceptionIfNullOrBlank(mailId, "Email Id");
        util.throwExceptionIfNullOrBlank(emailPassword, "Password");
        util.throwExceptionIfNullOrBlank(isSSL, "isSSL");
        begin
          connection = App42::Connection::RESTConnection.new(@base_url)
          body = {'app42' => {"email"=> {
            "host" => emailHost,
            "port" => emailPort,
            "emailId" => mailId,
            "password" => emailPassword,
            "ssl" => isSSL
            }}}.to_json
          puts "Body #{body}"
          query_params = Hash.new
          params = {
            'apiKey'=> @api_key,
            'version' => @version,
            'timeStamp' => util.get_timestamp_utc,
          }
          query_params = params.clone
          params.store("body", body)
          signature = util.sign(@secret_key, params)
          resource_url = "#{@version}/#{@resource}/configuration"
          response = connection.post(signature, resource_url, query_params, body)
          email = EmailResponseBuilder.new
          emailObj = email.buildResponse(response)
        rescue  App42Exception =>e
          raise e
        rescue  Exception => e
          raise App42Exception.new(e)
        end
        return emailObj
      end

      #
      # Removes email configuration for the given email id. Note: In future the developer
      # wont be able to send mails through this id
      #
      # @param emailId
      #      - The email id for which the configuration has to be removed
      #
      # @return Email object containing the email id which has been removed
      #
      # @raise App42Exception
      #

      def remove_email_configuration(emailId)
        puts "Delete Email config Called "
        puts "Base url #{@base_url}"
        response = nil;
        responseObj = App42Response.new();
        util = Util.new
        util.throwExceptionIfNullOrBlank(emailId, "Email Id");
        begin
          connection = App42::Connection::RESTConnection.new(@base_url)
          query_params = Hash.new
          params = {
            'apiKey'=> @api_key,
            'version' => @version,
            'timeStamp' => util.get_timestamp_utc,
          }
          query_params = params.clone
          params.store("emailId", emailId)
          signature = util.sign(@secret_key, params)
          resource_url = "#{@version}/#{@resource}/configuration/#{emailId}"
          response = connection.delete(signature, resource_url, query_params)
          responseObj.strResponse=(response)
          responseObj.isResponseSuccess=(true)
        rescue  App42Exception =>e
          raise e
        rescue  Exception => e
          raise App42Exception.new(e)
        end
        return responseObj
      end

      #
      # Gets all Email Configurations for the app
      #
      # @return Email object containing all Email Configurations
      #
      # @raise App42Exception
      #

      def get_email_configurations()
        puts "getEmailConfigurations "
        puts "Base url #{@base_url}"
        response = nil;
        emailObj = nil;
        emailObj = Email.new
        util = Util.new
        begin
          connection = App42::Connection::RESTConnection.new(@base_url)
          query_params = Hash.new
          params = {
            'apiKey'=> @api_key,
            'version' => @version,
            'timeStamp' => util.get_timestamp_utc,
          }
          query_params = params.clone
          signature = util.sign(@secret_key, params)
          resource_url = "#{@version}/#{@resource}/configuration"
          response = connection.get(signature, resource_url, query_params)
          emailObj = EmailResponseBuilder.new().buildResponse(response)
        rescue  App42Exception =>e
          raise e
        rescue  Exception => e
          raise App42Exception.new(e)
        end
        return emailObj
      end

      #
      # Sends the Email to the specified recipient with the provided detail
      #
      # @param fromEmail
      #      - The Email Id using which the mail(s) has to be sent
      # @param sendTo
      #      - The email ids to which the email has to be sent. Email can be sent to multiple email ids.
      # Multiple email ids can be passed using comma as the seperator e.g. sid@shephertz.com, info@shephertz.com
      # @param sendSubject
      #      - Subject of the Email which to be sent
      # @param sendMsg
      #      - Email body which has to be sent
      # @param emailMIME
      #      - MIME Type to be used for sending mail. EmailMIME available options are PLAIN_TEXT_MIME_TYPE or HTML_TEXT_MIME_TYPE
      #
      # @return Email object containing all the details used for sending mail
      #
      # @raise App42Exception
      #

      def send_mail(sendTo, sendSubject, sendMsg, fromEmail, emailMime)
        puts "sendMail Called "
        puts "Base url #{@base_url}"
        response = nil;
        emailObj = nil;
        emailObj = Email.new
        util = Util.new
        util.throwExceptionIfNullOrBlank(sendTo, "Send To");
        util.throwExceptionIfNullOrBlank(sendSubject, "Send Subject");
        util.throwExceptionIfNullOrBlank(sendMsg, "Send Message");
        util.throwExceptionIfNullOrBlank(fromEmail, "From Email");
        util.throwExceptionIfNullOrBlank(emailMime, "emailMime");
        begin
          if (EmailMIME.new.isAvailable(emailMime) == nil)
            raise App42NotFoundException.new("Email MIME #{emailMime} does not Exist ");
          end
          connection = App42::Connection::RESTConnection.new(@base_url)
          body = {'app42' => {"email"=> {
            "to" => sendTo,
            "subject" => sendSubject,
            "msg" => sendMsg,
            "emailId" => fromEmail,
            "mimeType" => emailMime
            }}}.to_json
          puts "Body #{body}"
          query_params = Hash.new
          params = {
            'apiKey'=> @api_key,
            'version' => @version,
            'timeStamp' => util.get_timestamp_utc,
          }
          query_params = params.clone
          params.store("body", body)
          signature = util.sign(@secret_key, params)
          resource_url = "#{@version}/#{@resource}"
          response = connection.post(signature, resource_url, query_params, body)
          emailObj = EmailResponseBuilder.new().buildResponse(response)
        rescue  App42Exception =>e
          raise e
        rescue  Exception => e
          raise App42Exception.new(e)
        end
        return emailObj
      end

    end
  end
end