#! /usr/bin/env ruby
#
# tdiaryplot - a tool to plot a chart of tDiary's access counter.
#
# Copyright (C) 2003 Satoru Takabayashi <satoru@namazu.org> 
#     All rights reserved.
#     This is free software with ABSOLUTELY NO WARRANTY.
#
# You can redistribute it and/or modify it under the terms of 
# the GNU General Public License version 2.
#

require 'mingchart'

def read_file (file_name)
  data = []
  File.open(file_name) {|f|
    f.readlines.map {|line| 
      if m = /^(\d\d\d\d-\d\d-\d\d) : (\d+),(\d+),(\d+)$/.match(line)
        time = Time.parse(m[1]).to_i
        total = m[2].to_i
        today = m[3].to_i
        data.push([time, today, total])
      end
    }
  }
  return data
end

if ARGV.length != 3
  puts "Usage: tdiaryplot FONT-FILE LOG-FILE FLASH-FILE"
  exit(1)
end

font_file_name = ARGV.shift
counter_log_file_name = ARGV.shift
flash_file_name = ARGV.shift

data = read_file(counter_log_file_name)
flash_file_name = flash_file_name
chart = MingChart.new(:flash_font => font_file_name,
                      :x_time_scale => true,
                      :drawing_methods => [:draw_dotted_line,
                        :draw_dotted_filled_line],
                      :y_axes => [:left, :right],
                      :right_y_label => "total count",
                      :left_y_label => "daily count",
                      :font_size => 42,
                      :x_time_scale_format => "%m/%d",
                      :line_titles => ["daily count", "total count"]
                      )
(data.first.length - 1).times {|i|
  chart.add_data(data, i + 1)
}
chart.draw
chart.save(flash_file_name)