ejdyksen/report-exercise.rb

## report-exercise.rb
#
# The goal of this exercise is work on identifying abstraction which helps simplify, document,
# and separate the concerns going on in file.
#
# Exercise:
#   * Find related ideas in the below code
#   * Abstract them out (methods, modules, classes, etc, you pick!)
#   * If you find multiple ways, then do a separate gist for each way.
#   * Rinse repeat until you see no other ways.
#
# Note: there is not enough of the code-base to run this code, so in order to run
#   the code you'll have to implement the missing pieces.
class Report
  attr_accessor :ship

  def initialize(ship)
    @ship = ship
  end

  def title
    "#{ship.name} Report"
  end

  def logs
    ship.logs.active.this_year.order("date DESC")
  end


  def generate(format)
    Report.const_get(format.to_s.capitalize).new(self).generate
  end

  class Exporter
    attr_accessor :report

    initialize(report)
      @report = report
    end
  end

  class Plain < Exporter
    def generate
      output = []
      output << "###### #{@title} ######"
      ship.logs do |log|
        output << log.line
      end
      output.join "\n"
    end
  end

  class Html < Exporter
    def generate
      output = "<html>"
      output << "  <head>"
      output << "    <title>#{@title}</title>"
      output << "  </head>"
      output << "  <body>"
      ship.logs.each do |log|
        output << "  <p>#{log.line}</p>"
      end
      output << "  </body>"
      output << "</html>"
      output
    end
  end

  class Json < Exporter
    def generate
      output = { title: @title, lines: [] }
      ship.logs.each do |log|
        output[:lines] << log.line
      end
      output
    end
  end

end

class Ship
  attr_accessor :name

  has_many :logs
end

class Log
  scope :active, where("status = ?", "active")
  scope :this_year, where("date >= '#{Time.now.year}-01-01' AND state=?")

  def line
    "#{self.date}: #{self.message} (#{self.alert_level})"
  end
end
	#
	# The goal of this exercise is work on identifying abstraction which helps simplify, document,
	# and separate the concerns going on in file.
	#
	# Exercise:
	# * Find related ideas in the below code
	# * Abstract them out (methods, modules, classes, etc, you pick!)
	# * If you find multiple ways, then do a separate gist for each way.
	# * Rinse repeat until you see no other ways.
	#
	# Note: there is not enough of the code-base to run this code, so in order to run
	# the code you'll have to implement the missing pieces.
	class Report
	attr_accessor :ship

	def initialize(ship)
	@ship = ship
	end

	def title
	"#{ship.name} Report"
	end

	def logs
	ship.logs.active.this_year.order("date DESC")
	end


	def generate(format)
	Report.const_get(format.to_s.capitalize).new(self).generate
	end

	class Exporter
	attr_accessor :report

	initialize(report)
	@report = report
	end
	end

	class Plain < Exporter
	def generate
	output = []
	output << "###### #{@title} ######"
	ship.logs do \|log\|
	output << log.line
	end
	output.join "\n"
	end
	end

	class Html < Exporter
	def generate
	output = "<html>"
	output << " <head>"
	output << " <title>#{@title}</title>"
	output << " </head>"
	output << " <body>"
	ship.logs.each do \|log\|
	output << " <p>#{log.line}</p>"
	end
	output << " </body>"
	output << "</html>"
	output
	end
	end

	class Json < Exporter
	def generate
	output = { title: @title, lines: [] }
	ship.logs.each do \|log\|
	output[:lines] << log.line
	end
	output
	end
	end

	end

	class Ship
	attr_accessor :name

	has_many :logs
	end

	class Log
	scope :active, where("status = ?", "active")
	scope :this_year, where("date >= '#{Time.now.year}-01-01' AND state=?")

	def line
	"#{self.date}: #{self.message} (#{self.alert_level})"
	end
	end