class ResourceCloneGenerator

# File lib/generators/resource_clone/resource_clone_generator.rb, line 15
def check_for_model
  begin
  source_model.classify.constantize #throws runtime if model doesn't exist
  rescue
    raise Thor::Error, 
      "Cannot clone model (#{source_model}) that doesn't exist."
  end
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 117
def handle_assets
      #???
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 32
def handle_controller
      base_path = "app/controllers"
  path = File.join(base_path, "#{file_name.pluralize}_controller.rb")
  copy_file("#{Rails.root}/app/controllers/#{source_model.pluralize}_controller.rb", path)
  gsub_file path, source_model.classify.pluralize, class_name.pluralize
  gsub_file path, %r(([Created|Updated]) #{source_model.humanize}), "#{'\1'} #{file_name.humanize}"
  gsub_file path, source_model.classify, class_name
  gsub_file path, "@#{source_model.pluralize} =", "@#{table_name} ="
  gsub_file path, "@#{source_model} =", "@#{file_name} ="
  gsub_file path, "@#{source_model}.", "@#{file_name}."
  gsub_file path, ":#{source_model}", ":#{file_name}"
  gsub_file path, "def #{source_model}_params", "def #{file_name}_params"
  gsub_file path, "(#{source_model}_params)", "(#{file_name}_params)"
  gsub_file path, "redirect_to #{source_model.pluralize}_url", 
                                                              "redirect_to #{file_name.pluralize}_url"
              gsub_file path, "redirect_to #{source_model}_url(@#{source_model})", 
                                                              "redirect_to #{file_name}_url(@#{file_name})"
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 121
def handle_messages
      unless behavior == :revoke || options.test_mode?
             msg = "\nRun new migration [#{@new_migr_file}] now "
             msg +=      " by typing 'y' or type 'n' and run it later at your liesure."
             if yes?(msg, :magenta)
                     rake "db:migrate:up VERSION=#{@ts}"
             end
        end
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 68
def handle_migration
      migr_files = Dir["#{Rails.root}/db/migrate/*_create_#{source_model.pluralize}.rb"]
      if migr_files.count > 0
              @ts = Time.now.to_s(:number)
              @new_migr_file = "#{@ts}_create_#{table_name}.rb"
              copy_file migr_files.first, "db/migrate/#{@new_migr_file}"
              gsub_file "db/migrate/#{@new_migr_file}", 
                      "class Create#{source_model.classify.pluralize} < ActiveRecord::Migration",
                      "class Create#{table_name.classify.pluralize} < ActiveRecord::Migration"
        gsub_file "db/migrate/#{@new_migr_file}", "create_table :#{source_model.pluralize} do |t|",
           "create_table :#{table_name} do |t|"
      end
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 24
def handle_model
      base_path = "app/models"
  path = File.join(base_path, "#{file_name}.rb")
  copy_file("#{Rails.root}/app/models/#{source_model}.rb", path)
  gsub_file path, source_model.classify, class_name
  #replace other uses of source_model here??? (should be using "self")
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 82
def handle_routes
              #TODO: See why destroy does doesn't remove the injected routes
      #TODO: Make sure this works when multiple resources are defined on the same line
      # ie. resources :photos, :books, :videos
      
      routes_str = change_lines("#{Rails.root}/config/routes.rb", 
                                                                                                                                      %r(resources\s*:#{source_model.pluralize}), 
                                                                                                                                      "resources :#{table_name}")
      routes_str += "\n" + change_lines("#{Rails.root}/config/routes.rb", 
                                                                                                                                      %r(resource\s*:#{source_model}), 
                                                                                                                                      "resource :#{file_name}")
      inject_into_file "config/routes.rb",
              after: ".application.routes.draw do\n" do
                      routes_str
              end
      
      re = %r((\A\s*[get|post|put|patch|delete].*)#{source_model.pluralize}([/|#]))
      lines = File.readlines("#{Rails.root}/config/routes.rb")
      method_routes = lines.select { |line| line.match(re) }
      routes_str = method_routes.inject("") do |memo, route|
              #memo << route.gsub(re, "#{'\1'+file_name.pluralize+'\2'}")
              #TODO: above line didn't work for get '/people/:id' => 'people#show'
              # so for now just replace old resource with new
              memo << route.gsub(source_model.pluralize, file_name.pluralize)
      end
      inject_into_file "config/routes.rb",
              after: ".application.routes.draw do\n" do
                      "\n"+routes_str
              end
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 113
def handle_tests
      #???
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 51
def handle_views
      base_path = "app/views/#{file_name.pluralize}"
      directory "#{Rails.root}/app/views/#{source_model.pluralize}", base_path
      gsub_file "#{base_path}/index.html.haml", "@#{source_model.pluralize}.", "@#{file_name.pluralize}."
      gsub_file "#{base_path}/index.html.haml", %r((\s)#{source_model.humanize.pluralize}(\s)), 
                                                      "+#{'\1'+file_name.humanize.pluralize+'\2'}"
      gsub_file "#{base_path}/index.html.haml", %r(link_to (.*), edit_#{source_model}_path\(#{source_model}\)), 
              "link_to #{'\1'}, edit_#{file_name}_path(#{file_name})"
      gsub_file "#{base_path}/index.html.haml", %r(link_to (.*), #{source_model}), "link_to #{'\1'}, #{file_name}"
      gsub_file "#{base_path}/index.html.haml", %r(link_to (.*), new_#{source_model}_path), 
              "link_to #{'\1'}, new_#{file_name}_path"
      gsub_file "#{base_path}/_form.html.haml", %r(@#{source_model}(\s)), "@#{file_name+'\1'}"
      gsub_file "#{base_path}/_form.html.haml", %r((\s)+#{source_model.pluralize}\_path), "#{'\1'+file_name.pluralize}_path"
              replace_human_name("#{base_path}/edit.html.haml")
      replace_human_name("#{base_path}/new.html.haml")
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 133
def change_lines(fl_path, reg_exp, replace_with)
  all_lines = File.readlines(fl_path)
  matching_lines = all_lines.select { |line| line.match(reg_exp) }
  matching_lines.inject("") do |memo, ln|
    memo << ln.gsub(reg_exp, replace_with)+"\n"
  end
end

# File lib/generators/resource_clone/resource_clone_generator.rb, line 140
def replace_human_name(file_path)
        gsub_file file_path, %r(#{source_model.humanize}(\s)), "#{file_name.humanize+'\1'}"
end