module Rubydesk

# File lib/rubydesk.rb, line 237
def self.doc_name(name)
  case name
    when "tickets" then "helpdesk_ticket"
    when "ticket_fields" then "helpdesk-ticket-fields"
    when "ticket_notes" then "helpdesk_note"
    when "users" then "user"
    when "companies" then "customer"
    else raise StandardError, "No root object for this call"
  end
end

# File lib/rubydesk.rb, line 98
def self.fd_define_delete(name)
  name = name.to_s
  method_name = "delete_" + name

  define_method method_name do |args|
    uri = mapping(name)
    raise StandardError, "An ID is required to delete" if args.size.eql? 0
    uri.gsub!(/.xml/, "/#{args}.xml")
    RestClient.delete uri
  end
end

# File lib/rubydesk.rb, line 46
def self.fd_define_get(name)
  name = name.to_s
  method_name = "get_" + name

  define_method method_name do |*args|
    uri = mapping(name)
    uri.gsub!(/\.xml/, "\.#{response_format}")

    # If we've been passed a string paramter, it means we're fetching
    # something like domain_URL/helpdesk/tickets/[ticket_id].xml
    #
    # If we're supplied with a hash parameter, it means we're fetching
    # something like domain_URL/helpdesk/tickets.xml?filter_name=all_tickets&page=[value]
    if args.size > 0
      url_args = args.first
      if url_args.class == Hash
        uri += '?' + URI.encode_www_form(url_args)
      else
        uri.gsub!(/\.#{response_format}/, "/#{url_args}\.#{response_format}")
      end
    end

    begin
      response = RestClient.get uri
    rescue Exception
      response = nil
    end
  end
end

# File lib/rubydesk.rb, line 78
def self.fd_define_parameterized_get(name)
  name = name.to_s
  method_name = "get_" + name

  define_method method_name do |params={}|
    uri = mapping(name)
    uri.gsub!(/\.xml/, ".#{response_format}")
    unless params.empty?
      uri += '?' + URI.encode_www_form(params)
    end

    begin
      response = RestClient.get uri
    rescue Exception
      response = nil
    end
  end
end

# File lib/rubydesk.rb, line 115
def self.fd_define_post(name)
  name = name.to_s
  method_name = "post_" + name

  define_method method_name do |args, id=nil|
    raise StandardError, "Arguments are required to modify data" if args.size.eql? 0
    uri = mapping(name, id)

    builder = Nokogiri::XML::Builder.new do |xml|
      xml.send(doc_name(name)) {
        if args.has_key? :attachment
          attachment_name = args[:attachment][:name] or raise StandardError, "Attachment name required"
          attachment_cdata = args[:attachment][:cdata] or raise StandardError, "Attachment CDATA required"
          xml.send("attachments", type: "array") {
            xml.send("attachment") {
              xml.send("resource", "type" => "file", "name" => attachment_name, "content-type" => "application/octet-stream") {
                xml.cdata attachment_cdata
              }
            }
          }
        args.except! :attachment
        end

        args.each do |key, value|
          xml.send(key, value)
        end
      }
    end

    begin
      response = RestClient.post uri, builder.to_xml, :content_type => "text/xml"

    rescue RestClient::UnprocessableEntity
      raise AlreadyExistedError, "Entry already existed"

    rescue RestClient::InternalServerError
      raise ConnectionError, "Connection to the server failed. Please check hostname"

    rescue RestClient::Found
      raise ConnectionError, "Connection to the server failed. Please check username/password"

    rescue Exception
      raise
    end

    response
  end
end

# File lib/rubydesk.rb, line 168
def self.fd_define_put(name)
  name = name.to_s
  method_name = "put_" + name

  define_method method_name do |args|
    raise StandardError, "Arguments are required to modify data" if args.size.eql? 0
    raise StandardError, "id is required to modify data" if args[:id].nil?
    uri = mapping(name)

    builder = Nokogiri::XML::Builder.new do |xml|
      xml.send(doc_name(name)) {
        args.each do |key, value|
          xml.send(key, value)
        end
      }
    end

    begin
      uri.gsub!(/.xml/, "/#{args[:id]}.xml")
      response = RestClient.put uri, builder.to_xml, :content_type => "text/xml"

    rescue RestClient::InternalServerError
      raise ConnectionError, "Connection to the server failed. Please check hostname"

    rescue RestClient::Found
      raise ConnectionError, "Connection to the server failed. Please check username/password"

    rescue Exception
      raise
    end

    response
  end
end

# File lib/rubydesk.rb, line 16
def self.initialize(base_url, freshdesk_api_key='X', username='X', password='X')

  @base_url = base_url
  @freshdesk_api_key = freshdesk_api_key

  RestClient.add_before_execution_proc do | req, params |

    if @freshdesk_api_key
      req.basic_auth freshdesk_api_key, password
    else
      req.basic_auth username, password
    end
  end
end

# File lib/rubydesk.rb, line 222
def self.mapping(method_name, id = nil)
  case method_name
    when "tickets" then File.join(@base_url + "helpdesk/tickets.xml")
    when "user_ticket" then File.join(@base_url + "helpdesk/tickets/user_ticket.xml")
    when "ticket_fields" then File.join(@base_url, "ticket_fields.xml")
    when "ticket_notes" then File.join(@base_url, "helpdesk/tickets/#{id}/notes.xml")
    when "users" then File.join(@base_url, "contacts.xml")
    when "forums" then File.join(@base_url + "categories.xml")
    when "solutions" then File.join(@base_url + "solution/categories.xml")
    when "companies" then File.join(@base_url + "customers.xml")
    when "time_sheets" then File.join(@base_url + "helpdesk/time_sheets.xml")
  end
end

# File lib/rubydesk.rb, line 31
def self.response_format
  @response_format ||= "xml"
end

# File lib/rubydesk.rb, line 37
def self.response_format=(format)
  unless format.downcase =~ /json|xml/
    raise StandardError "Unsupported format: '#{format}'. Please specify 'xml' or 'json'."
  end
  @response_format = format.downcase
end