Class: MagicSheet::Sheet

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

Constant Summary collapse

DELEGATE =

Which methods to make available in the global scope

%w(rate fees convert_to chunk width log)
DEFAULT_WIDTH = 
20

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Sheet

Returns a new instance of Sheet.



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# File 'lib/magicsheet.rb', line 59

def initialize
  @fees = []
  @chunk = 1
  @width = DEFAULT_WIDTH
end

Instance Method Details

#chunk(val) ⇒ Object 



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# File 'lib/magicsheet.rb', line 81

def chunk(val)
  unless val.between?(1,60)
    raise ArgumentError, "Chunk must be between 1 (minute-wise calculation) and 60 (full-hour calculation)"
  end
  @chunk = val
end

#convert_to(currency_name) ⇒ Object 



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# File 'lib/magicsheet.rb', line 69

def convert_to(currency_name)
  @convert_to = Currency[currency_name]
end

#fees(*list) ⇒ Object 



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# File 'lib/magicsheet.rb', line 77

def fees(*list)
  @fees = list.map {|f| Cost[f]}.compact
end

#log(str) ⇒ Object 



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# File 'lib/magicsheet.rb', line 102

def log(str)
  @log << ((str == '-') ? ''.rjust(@width,'-') : str.to_s.rjust(@width))
end

#process ⇒ Object 



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# File 'lib/magicsheet.rb', line 106

def process
  @log = []
  log "#{"%.2d" % @hours}:#{"%.2d" % @minutes}"
  
  if @chunk > 1 && @minutes > 0
    @minutes = (@minutes.to_f/@chunk).ceil * @chunk
    if @minutes == 60
      @hours += 1
      @minutes = 0
    end
  end
  
  log "= #{"%.2d" % @hours}:#{"%.2d" % @minutes}" if @chunk > 1
  
  #         if @minutes == 60
  #           @hours += 1
  #           @minutes = 0
  #         end
  #       end

  log "x #{@rate}"
  total = @hours * @rate.amount + (@minutes * @rate.amount/60.0)
  log '-'
  log "= #{Cost.new(total,@rate.currency)}"
  
  fees = false
  
  @fees.select {|f| f.currency == @rate.currency}.each do |f|
    fees = true
    total -= f.amount
    log "- #{f}"
  end
  
  if fees
    #log '-'
    log "= #{Cost.new(total,@rate.currency)}"
  end
  
  
  # Convert to target currency, if any
  if @convert_to && (@convert_to != @rate.currency)
    STDERR.puts "Getting conversion rate..."
    c = @rate.currency.conversion_rate_to(@convert_to)
    log ''
    log "x #{c}"
    log "(1h = #{Cost.new(@rate.amount * c,@convert_to)})"
    log ''
    total *= c
    log "= #{Cost.new(total,@convert_to)}"
    
    fees = false
    # Substract fees in target currency
    @fees.select {|f| f.currency == @convert_to}.each do |f|
      total -= f.amount
      log "- #{f}"
      fees = true
    end
    
    if fees
      log '-'
      log "= #{Cost.new(total,@convert_to)}"
    end
  end
  
  puts
  puts @log.join("\n")
end

#rate(rate) ⇒ Object 



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# File 'lib/magicsheet.rb', line 73

def rate(rate)
  @rate = Cost[rate]
end

#scan ⇒ Object 



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# File 'lib/magicsheet.rb', line 88

def scan
  STDERR.puts "Scanning sheet..."
  @hours, @minutes = 0, 0;
  if defined?(DATA)
    DATA.read.scan(/(\d+)\:(\d+)/) do |h,m|
      @hours += h.to_i
      @minutes += m.to_i
    end
    @hours += @minutes / 60
    @minutes = @minutes % 60
  end
  return self
end

#width(w) ⇒ Object 



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# File 'lib/magicsheet.rb', line 65

def width(w)
  @width = w
end