Rakefile

task :default => :generate_new_mode_from_excel

desc "Update all the code, based on the spreadsheet in spreadsheet/model.xlsx"
task :generate_new_mode_from_excel => [:clean,'ext/model.c',:put_generated_files_in_right_place,:fix_test_require, :change_last_modified_date]

desc "Generates c version of the model"
file 'ext/model.c' do
  require 'excel_to_code'
  command = ExcelToC.new

  command.excel_file = "spreadsheet/model.xlsx"
  command.output_directory = 'ext'
  command.output_name = 'model'

  command.cells_that_can_be_set_at_runtime = { "Control" => (5.upto(57).to_a.map { |r| "e#{r}" }) }

  command.cells_to_keep = {
    # The names, limits, 10 worders, long descriptions
    "Control" => (5.upto(57).to_a.map { |r| ["d#{r}","f#{r}","h#{r}","i#{r}","j#{r}","k#{r}","bo#{r}","bp#{r}","bq#{r}","br#{r}"] }).flatten, 
    "Intermediate output" => :all, 
    "CostPerCapita" => :all, 
    "Land Use" => :all, 
    "Flows" => :all, 
    "AQ Outputs" => :all, 
  }
  
  # Add the version number
  command.cells_to_keep["Control"] << "m1"
  
  # Add the example pathways
  rows = (4..60).to_a
  ('m'..'z').to_a.push('aa','ab').each do |column|
    rows.each do |row|
      command.cells_to_keep["Control"].push("#{column}#{row}")
    end
  end

  command.actually_compile_code = true
  command.actually_run_tests = true

  command.run_in_memory = true

  command.go!
end

# Put things in their place
task :put_generated_files_in_right_place do
  require 'ffi'
  libfile = FFI.map_library_name('model')
  if File.exists?(File.join('ext',libfile))
    mv File.join('ext',libfile), File.join('lib','model',libfile)
  end

  mv 'ext/model.rb', 'lib/model/model.rb'
  mv 'ext/test_model.rb', 'test/test_model.rb'
  rm 'ext/Makefile'
end

task :fix_test_require do
  test = IO.readlines('test/test_model.rb').join
  test.gsub!("require_relative 'model'","require_relative '../lib/model'")
  File.open('test/test_model.rb','w') { |f| f.puts test }
end

desc "This updates the Model.last_modified_date attribute to the current time"
task :change_last_modified_date do
  File.open('lib/model/model_version.rb','w') do |f|
    f.puts "def Model.last_modified_date() @last_modified_date ||= Time.utc(*#{Time.now.to_a}); end"
  end
end

desc "Remove all the spreadsheet code, ready to be regenerated"
task :clean do
  rm 'lib/model/model.rb', :force => true
  rm 'test/test_model.rb', :force => true
  rm 'ext/model.c', :force => true
end