manlycode/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
  def initialize(ship)
    @title = "USS Enterprise Report"
    logs = ship_logs_for_year(Time.now.year)
    @text = log_lines(logs)
  end

  def ship_logs_for_year(year)
    ship.logs.where(
      "date >= '#{Time.now.year}-01-01' AND state=?",
      "active"
    ).order("date DESC")
  end

  def log_lines(logs)
    logs.map do |log|
      status = "#{log.date}: #{log.message} (#{log.alert_level})"
    end
  end

  def generate(format)
    if format == :plain
      output = []
      output << "###### #{@title} ######"
      @text.each_line do |line|
        output << line
      end
      output.join "\n"
    elsif format == :html
      output = "<html>"
      output << "  <head>"
      output << "    <title>#{@title}</title>"
      output << "  </head>"
      output << "  <body>"
      @text.each do |line|
        output << "  <p>#{line}</p>"
      end
      output << "  </body>"
      output << "</html>"
      output
    elsif format == :json
      output = { title: @title, lines: [] }
      @text.each do |line|
        output[:lines] << line
      end
      output
    else
      raise "Unknown report format: #{format.inspect}"
    end
  end
end


class LogFormat
  def for(sym)
    puts self.inspect
    self.const_get "#{self.to_s}::#{sym.to_s.capitalize}"
  end
end

class LogFormat::Html < LogFormat
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
	def initialize(ship)
	@title = "USS Enterprise Report"
	logs = ship_logs_for_year(Time.now.year)
	@text = log_lines(logs)
	end

	def ship_logs_for_year(year)
	ship.logs.where(
	"date >= '#{Time.now.year}-01-01' AND state=?",
	"active"
	).order("date DESC")
	end

	def log_lines(logs)
	logs.map do \|log\|
	status = "#{log.date}: #{log.message} (#{log.alert_level})"
	end
	end

	def generate(format)
	if format == :plain
	output = []
	output << "###### #{@title} ######"
	@text.each_line do \|line\|
	output << line
	end
	output.join "\n"
	elsif format == :html
	output = "<html>"
	output << " <head>"
	output << " <title>#{@title}</title>"
	output << " </head>"
	output << " <body>"
	@text.each do \|line\|
	output << " <p>#{line}</p>"
	end
	output << " </body>"
	output << "</html>"
	output
	elsif format == :json
	output = { title: @title, lines: [] }
	@text.each do \|line\|
	output[:lines] << line
	end
	output
	else
	raise "Unknown report format: #{format.inspect}"
	end
	end
	end


	class LogFormat
	def for(sym)
	puts self.inspect
	self.const_get "#{self.to_s}::#{sym.to_s.capitalize}"
	end
	end

	class LogFormat::Html < LogFormat
	end