require 'flydata/command/base'
require 'flydata/command/login'

module Flydata
  module Command
    class Setlogdel < Base
      def run
        Flydata::Command::Login.new.run unless flydata.credentials.authenticated?
        # Choose target data_entry
        data_entry = choose_data_entry
        return unless data_entry
        # Confirm and update
        set_log_deletion data_entry if confirm_setting data_entry
        register_crontab
      end

      private
      def choose_data_entry
        data_entries = retrieve_data_entries
        if data_entries.size < 1
          puts("There are no registered entries.")
          puts("You need to create a data entry with flydata setup command.")
          return nil
        end
        choices = data_entries.map {|e|
          file_attr = File.writable?(e['log_path']) ? "" : "(read only)"
          "#{e['display_name']}\t#{e['log_path']}\t -- Log deletion:#{boolToOnOff e['log_deletion']} #{file_attr}"
        }
        choices << "Cancel"

        choice = nil
        say('Please select your log path for setting log deletion.')
        say("  (About log deletion - http://docs.hapyrus.com/faq/how-log-deletion-works/)")
        newline
        choose do |menu|
          menu.index = :letter
          menu.index_suffix = ") "
          menu.prompt = "Select item to change log deletion setting: "
          menu.choices(*choices) {|item| choice = item.split(' ')[0]}
        end
        newline

        data_entry = data_entries.select{|e| e['display_name'] == choice}.first
        return nil unless data_entry

        if not data_entry['log_deletion'] and not File.writable?(data_entry['log_path'])
          say("Failed to change setting...")
          say("  This path is readonly for current user.")
          say("  Change user or permission, if you want to set log deletion option.")
          return nil
        end
        data_entry
      end
      def confirm_setting(data_entry)
        cur_flag = data_entry['log_deletion']
        loop do
          say "Target log path: #{data_entry['log_path']}"
          say "Now changing log deletion setting: #{boolToOnOff cur_flag} -> #{boolToOnOff !cur_flag}"
          ans = ask "Are you sure? (yes/no): "
          if ans.size > 0
            case ans[0].downcase
            when 'y'; return true
            when 'n'; return false
            end
          end
          say " ! Please answer y[es] or n[o]"
          newline
        end
      end
      def boolToOnOff(bool)
        bool ? 'ON' : 'OFF'
      end
      def set_log_deletion(data_entry)
        param = {
          :data_entry => {
            'log_deletion' => !data_entry['log_deletion']
          }
        }
        url = "/data_entries/#{data_entry['id']}"
        ret = flydata.put(url, param)
        raise 'Failed to update the log deletion setting.' unless ret['success']
        puts "Update succeeded!"
      end
    end
  end
end