require "db/mongo/models/key"
require "fileutils"
require "app/api2/parsers/key"
require_relative "request_handler"

module Devops
  module API2_0
    module Handler
      class Key < RequestHandler

        set_parser Devops::API2_0::Parser::KeyParser

        def keys
          # Devops::Db.connector.keys({}, {path: false})
          Devops::Db.connector.keys({})
        end

        def create(keys_dir)
          body = parser.create
          fname = body["file_name"]
          file_name = File.join(keys_dir, fname)
          raise InvalidRecord.new("File '#{fname}' already exist") if File.exists?(file_name)
          File.open(file_name, "w") do |f|
            f.write(body["content"])
            f.chmod(0400)
          end

          key = Devops::Model::Key.new({"path" => file_name, "id" => body["key_name"]})
          Devops::Db.connector.key_insert key
        end

        def delete key_id
          mongo = Devops::Db.connector
          servers = mongo.servers_by_key key_id
          unless servers.empty?
            s_str = servers.map{|s| s.id}.join(", ")
            raise DependencyError.new "Deleting is forbidden: Key is used in servers: #{s_str}"
          end

          k = mongo.key key_id
          begin
            FileUtils.rm(k.path)
          rescue
            DevopsLogger.logger.error "Missing key file for #{key_id} - #{k.filename}"
          end
          mongo.key_delete key_id
        end

      end
    end
  end
end