# The MIT License
#
# Copyright (c) 2008 Ryan Funduk
#
# Permission is hereby granted, free of charge, to any person obtaining a copy
# of this software and associated documentation files (the "Software"), to deal
# in the Software without restriction, including without limitation the rights
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
# copies of the Software, and to permit persons to whom the Software is
# furnished to do so, subject to the following conditions:
#
# The above copyright notice and this permission notice shall be included in
# all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
# THE SOFTWARE.

# This rakefile automates the 'compilation' of html/css/whatever files, it
# has the following tasks:
#
#     build         =>  go through all files in ./sources/ not ending in
#                       '.partial' and run them through ERB, these files
#                       should call the function 'partial' with an argument
#                       like 'something.html' which will insert the entire
#                       text of 'something.html.partial' and replace V% with
#                       <% and %V with %> (so you can include ERB snippets
#                       as part of your partials if necessary but also allow
#                       executing ERB inside them).
#
#     colorize      =>  if you have the python project 'pygments' installed and
#                       in your path you can run this task to take files in
#                       ./sources/color/ and turn them into partials in
#                       ./sources/.
#
#     deploy        =>  using the configuration variables at the beginning of
#                       this file, deploy will take compiled files (that is,
#                       everything not under ./sources) and tar+ssh them to
#                       the remote server specified.
#
#     [default]     =>  the default is to run [ :colorize, :build ]
#
# Note: Be sure to name this file 'Rakefile' and place it somewhere where the
#       files in it's current directory aren't critical as it could, depending
#       on your source filenames, overwrite them.

require 'erb'

SRCDIR = 'sources'
$partials = 0

REMOTE_HOST = { :hostname => '---',
                :destination => '.',
                :username => '---' }

def write_output( filename, result )
  ext = filename.split( '.' ).last

  filename = filename.split '/'
  filename.delete SRCDIR
  filename.insert -2, ext unless ext == 'html'
  filename = filename.join '/'

  result.gsub! /V%/, '&lt;%'
  result.gsub! /%V/, '%&gt;'

  File.open( filename, 'wb' ).write( result )
  puts "WROTE     : #{filename}"
end

def partial( name )
  filename = "#{SRCDIR}/#{name}.partial"

  if File.exists? filename
    $partials += 1
    puts "LOADED    : #{name}.partial"
    File.open( filename, 'rb' ).read.chomp
  else
    puts "ERROR     : #{filename}"
  end
end

task :colorize do
  FileList["#{SRCDIR}/color/*.*"].each do |f|
    d = "sources/#{f.split( '/' ).last}.partial"
    puts "COLORING  : #{f}"
    sh "pygmentize -f html -o #{d} #{f}"
  end
end

task :build do
  sources = FileList["#{SRCDIR}/*.*"].exclude( "#{SRCDIR}/*.partial" )

  sources.each do |f|
    puts "\nCOMPILING : #{f}"
    page = ERB.new( File.open( f, 'rb' ).read )
    write_output f, page.result
  end

  puts "\nDONE      : Compiled #{sources.size} sources w/ " \
       "#{$partials} partials."
end

task :deploy do
  sh "tar --exclude ./sources -czf - ./ | " \
     "ssh #{REMOTE_HOST[:username]}@#{REMOTE_HOST[:hostname]} " \
     "tar -xzf - -C #{REMOTE_HOST[:destination]}"
end

task :default => [ :colorize, :build ]