#
# Author:: Chef Partner Engineering (<partnereng@chef.io>)
# Copyright:: Copyright (c) 2015 Chef Software, Inc.
# License:: Apache License, Version 2.0
#
# 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.
#

require 'ffi_yajl'

module Vra
  class Request
    attr_reader :client, :id
    def initialize(client, id)
      @client = client
      @id     = id

      @request_data       = nil
      @status             = nil
      @completion_state   = nil
      @completion_details = nil
    end

    def refresh
      @request_data = FFI_Yajl::Parser.parse(client.http_get!("/catalog-service/api/consumer/requests/#{@id}"))
    rescue Vra::Exception::HTTPNotFound
      raise Vra::Exception::NotFound, "request ID #{@id} is not found"
    end

    def refresh_if_empty
      refresh if request_empty?
    end

    def request_empty?
      @request_data.nil?
    end

    def status
      refresh_if_empty
      return if request_empty?

      @request_data['phase']
    end

    def completed?
      successful? || failed?
    end

    def successful?
      status == 'SUCCESSFUL'
    end

    def failed?
      status == 'FAILED'
    end

    def completion_state
      refresh_if_empty
      return if request_empty?

      @request_data['requestCompletion']['requestCompletionState']
    end

    def completion_details
      refresh_if_empty
      return if request_empty?

      @request_data['requestCompletion']['completionDetails']
    end

    def resources
      resources = []

      begin
        request_resources = client.http_get_paginated_array!("/catalog-service/api/consumer/requests/#{@id}/resources")
      rescue Vra::Exception::HTTPNotFound
        raise Vra::Exception::NotFound, "resources for request ID #{@id} are not found"
      end

      request_resources.each do |resource|
        resources << Vra::Resource.new(client, data: resource)
      end

      resources
    end
  end
end