cgiacomi/r2do

#
#  Copyright 2012 Christian Giacomi http://www.christiangiacomi.com
#
#  Licensed under the Apache License, Version 2.0 (the "License");
#  you may not use this file except in compliance with the License.
#  You may obtain a copy of the License at
#
#    http://www.apache.org/licenses/LICENSE-2.0
#
#  Unless required by applicable law or agreed to in writing, software
#  distributed under the License is distributed on an "AS IS" BASIS,
#  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#  See the License for the specific language governing permissions and
#  limitations under the License.
#

module R2do
  module Commands
    class InitCommand < Command

      YES = "Y"

      def initialize(state)
        super('i', 'init', 'Initializes a new clean session.')

        @state = state
      end

      # Initializes the applications and resets the datafile
      #
      # @param [Array] args the arguments passed to the app by the user
      # @return [void]
      def execute(args)
        UI.status("Initialize new session?")
        UI.new_line()
        value = UI.input("Any previous session will be lost. Continue? [Yn]")
        if value == YES
          @state.reset()
          @state.modified = true
          UI.status("Initialized a new session of r2do.")
        else
          UI.status("Continuing with current session.")
        end
      end

      def help()
        help = <<-EOF
NAME
       r2do #{@extended}

SYNOPSIS
       'r2do #{@extended}' or 'r2do #{@short}' are equivalent

DESCRIPTION

      The #{@extended} command initializes a new session of the application. Any previously saved data is permanently lost.

      usage: r2do #{@extended}

        EOF
      end

    end

  end

end