# -*- encoding : utf-8 -*-
module Homesick
  module Actions
    # File-related helper methods for Homesick
    module FileActions
      def mv(source, destination, config = {})
        source = Pathname.new(source)
        destination = Pathname.new(destination + source.basename)

        if destination.exist?
          say_status :conflict, "#{destination} exists", :red unless options[:quiet]

          FileUtils.mv source, destination if (options[:force] || shell.file_collision(destination) { source }) && !options[:pretend]
        else
          # this needs some sort of message here.
          FileUtils.mv source, destination unless options[:pretend]
        end
      end

      def rm_rf(dir)
        say_status "rm -rf #{dir}", '', :green unless options[:quiet]
        FileUtils.rm_r dir, force: true
      end

      def rm_link(target)
        target = Pathname.new(target)

        if target.symlink?
          say_status :unlink, "#{target.expand_path}", :green unless options[:quiet]
          FileUtils.rm_rf target
        else
          say_status :conflict, "#{target} is not a symlink", :red unless options[:quiet]
        end
      end

      def rm(file)
        say_status "rm #{file}", '', :green unless options[:quiet]
        FileUtils.rm file, force: true
      end

      def rm_r(dir)
        say_status "rm -r #{dir}", '', :green unless options[:quiet]
        FileUtils.rm_r dir
      end

      def ln_s(source, destination, config = {})
        source = Pathname.new(source)
        destination = Pathname.new(destination)
        FileUtils.mkdir_p destination.dirname

        action = if destination.symlink? && destination.readlink == source
                   :identical
                 elsif destination.symlink?
                   :symlink_conflict
                 elsif destination.exist?
                   :conflict
                 else
                   :success
                 end

        handle_symlink_action action, source, destination
      end

      def handle_symlink_action(action, source, destination)
        case action
        when :identical
          say_status :identical, destination.expand_path, :blue unless options[:quiet]
        when :symlink_conflict
          say_status :conflict,
                     "#{destination} exists and points to #{destination.readlink}",
                     :red unless options[:quiet]

          FileUtils.rm destination
          FileUtils.ln_s source, destination, force: true unless options[:pretend]
        when :conflict
          say_status :conflict, "#{destination} exists", :red unless options[:quiet]

          if collision_accepted?
            FileUtils.rm_r destination, force: true unless options[:pretend]
            FileUtils.ln_s source, destination, force: true unless options[:pretend]
          end
        else
          say_status :symlink,
                     "#{source.expand_path} to #{destination.expand_path}",
                     :green unless options[:quiet]
          FileUtils.ln_s source, destination unless options[:pretend]
        end
      end
    end
  end
end