require "sinatra/base"
require "sinatra/streaming"
require "json"

require "fog"

require "exceptions/invalid_record"
require "exceptions/record_not_found"
require "exceptions/dependency_error"
require "exceptions/conflict_exception"
require "exceptions/parser_error"
require "exceptions/validation_error"
require "exceptions/knife_config_error"
require 'core/devops-logger'

require_relative "../helpers/version_2"

module Devops
  class Api2 < Sinatra::Base

      include Sinatra::JSON
      helpers Sinatra::Streaming
      helpers Devops::API2_0::Helpers

      register Sinatra::DevopsAuth

      @@logger = nil
      @@access_logger = DevopsLogger.access_logger(File.join(DevopsConfig.config[:log_dir], "devops-api2.access.log"))

      configure :production do
        config = DevopsConfig.config
        log_file = File.join(config[:log_dir], "devops-api2.log")
        @@logger = DevopsLogger.create(log_file, Logger::INFO)
#        use Rack::CommonLogger, logger
        disable :dump_errors
        disable :show_exceptions
        #set :logging, Logger::INFO
        @@logger.info "Production mode"
      end

      configure :development do
        config = DevopsConfig.config
        log_file = File.join(config[:log_dir], "devops-api2.dev.log")
        @@logger = DevopsLogger.create(log_file, Logger::DEBUG)
    #    logger = DevopsLogger.create(log_file, Logger::DEBUG)
#    logger = Logger.new STDOUT
#        use Rack::CommonLogger, logger
        disable :raise_errors
        #set :show_exceptions, :after_handler
        set :show_exceptions, false
        #set :dump_errors, false
        @@logger.info "Development mode"
      end

      not_found do
        "Not found"
      end

      # set current logger and call handlers
      def call env
        DevopsLogger.logger = @@logger
        begin
          res = super(env)
        rescue DevopsError => e
          return [e.code, {}, e.message]
        end
        @@access_logger.info(env["REQUEST_METHOD"] + " " + env["REQUEST_URI"] + " - from #{env["HTTP_USER_AGENT"]} (#{env["REMOTE_USER"]}) / #{res.inspect}")
        res
      end

      error Devops::ValidationError do
        e = env["sinatra.error"]
        #logger.warn e.message
        halt_response(e.message, 400)
      end

      error Devops::ParserError do
        e = env["sinatra.error"]
        #logger.warn e.message
        halt_response(e.message, 400)
      end

      error RecordNotFound do
        e = env["sinatra.error"]
        logger.warn e.message
        halt_response(e.message, 404)
      end

      error InvalidRecord do
        e = env["sinatra.error"]
        logger.warn e.message
        logger.warn "Request body: #{request.body.read}"
        halt_response(e.message, 400)
      end

      error InvalidCommand do
        e = env["sinatra.error"]
        logger.warn e.message
        halt_response(e.message, 400)
      end

      error DependencyError do
        e = env["sinatra.error"]
        logger.warn e.message
        halt_response(e.message, 400)
      end

      error ConflictException do
        e = env["sinatra.error"]
        logger.warn e.message
        halt_response(e.message, 409)
      end

      error InvalidPrivileges do
        e = env["sinatra.error"]
        logger.warn e.message
        halt_response(e.message, 401)
      end

      error Excon::Errors::Error do
        e = env["sinatra.error"]
        logger.warn e.message
        halt_response(e.message, 400)
      end

      error ::Excon::Errors::Unauthorized do
        e = env["sinatra.error"]
        resp = e.response
        ct = resp.headers["Content-Type"]
        msg = unless ct.nil?
          if ct.include?("application/json")
            json = ::Chef::JSONCompat.from_json(resp.body)
            m = "ERROR: Unauthorized (#{json['error']['code']}): #{json['error']['message']}"
            logger.error(m)
          else
          end
          m
        else
          "Unauthorized: #{e.inspect}"
        end
        halt_response(msg, 500)
      end

      error Fog::Compute::AWS::Error do
        e = env["sinatra.error"]
        logger.error e.message
        halt_response(e.message, 500)
      end

      error do
        e = env["sinatra.error"]
        logger.error e.message
        halt_response(e.message, 500)
      end

    end
end