Class: Mcoin::Printer

Inherits:
Object
  • Object
show all
Defined in:
lib/mcoin/printer.rb

Overview

:nodoc:

Instance Method Summary collapse

Constructor Details

#initialize(*rows) ⇒ Printer

Returns a new instance of Printer.



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# File 'lib/mcoin/printer.rb', line 6

def initialize(*rows)
  @rows = rows.flatten
  @outputs = []

  build
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/mcoin/printer.rb', line 21

def build
  return if @rows.empty?
  build_header
  build_rows
end

#build_header ⇒ Object 



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# File 'lib/mcoin/printer.rb', line 27

def build_header
  @outputs << row(columns.map(&:capitalize))
  @outputs << column_widths.map { |width| '-' * width }.join(' | ')
end

#build_rows ⇒ Object 



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# File 'lib/mcoin/printer.rb', line 32

def build_rows
  @rows.each do |row|
    @outputs << row(columns.map { |column| row.send(column) })
  end
end

#column_widths ⇒ Object 



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# File 'lib/mcoin/printer.rb', line 45

def column_widths
  @widths ||= columns.map do |column|
    [@rows.map(&column).map(&:size).max, column.size].max
  end
end

#columns ⇒ Object 



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# File 'lib/mcoin/printer.rb', line 51

def columns
  # TODO: Load from command
  %i[market currency type last ask bid time]
end

#print ⇒ Object 



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# File 'lib/mcoin/printer.rb', line 13

def print
  if @rows.empty?
    puts 'No result found'
  else
    puts @outputs
  end
end

#row(row) ⇒ Object 



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# File 'lib/mcoin/printer.rb', line 38

def row(row)
  row.map(&:to_s)
     .zip(column_widths)
     .map { |item| item.reduce(:ljust) }
     .join(' | ')
end