branchhourslink

#!/usr/bin/ruby -w

# branchhourslink
#
# Make symlink so you can always include the same file in a web page
# and not have to figure out the date
#
# William Denton <wdenton@yorku.ca>
# http://github.com/wdenton/branchhours/

require 'optparse'
require 'time'
require 'yaml'

options = {}
options[:config]  = 'branchhours.yml'
options[:date]    = 'today'
options[:verbose] = false

OptionParser.new do |opts|
  opts.banner = "Usage: branchhourslink [options]"
  opts.on("-c", "--config configFile", "specify configuration file") do |configFile|
    options[:config] = configFile
  end
  opts.on("-d", "--date date", "default day (today, tomorrow, YYYYMMDD)") do |date|
    options[:date] = date
  end
  opts.on("-v", "--verbose",  "be verbose") { options[:verbose] = true }
end.parse!

begin
  config = YAML.load_file(options[:config])
rescue Exception => e
  puts e
  exit 1
end

if options[:date] =~ /today/i
  yyyymmdd = Time.now.strftime("%Y%m%d")
elsif options[:date] =~ /tomorrow/i
  yyyymmdd = (Time.now + 24*60*60).strftime("%Y%m%d")
else
  yyyymmdd = options[:date]
end

defaultFilePath = config['outputDir'] + "/" + config['defaultFile']
targetFilePath  = config['outputDir'] + "/" + yyyymmdd + ".html"
mdefaultFilePath = config['outputDir'] + "/m-" + config['defaultFile']
mtargetFilePath  = config['outputDir'] + "/m-" + yyyymmdd + ".html"

STDERR.puts "#{defaultFilePath} -> #{targetFilePath}" if options[:verbose]

# Finally, make the symlink so we can always
begin
  File.delete(defaultFilePath) if File.exist?(defaultFilePath)
  File.symlink(targetFilePath, defaultFilePath)
  File.delete(mdefaultFilePath) if File.exist?(mdefaultFilePath)
  File.symlink(mtargetFilePath, mdefaultFilePath)
rescue Exception => e
  STDERR.puts "Could not create symlink to today's hours: #{e}"
  STDERR.puts "Hours information may be incorrect on your web site"
  exit 1
end