module Xcal
  module Parktronic
    module Routes

      module Alarms

        # Fetches latest alarms
        #
        # ==== Parameters
        # * +page+ page number, defaults to 1
        # * +per_page+ per page value, defaults to 100
        #
        # ==== Examples
        #   api.get_paged_alarms
        #   api.get_paged_alarms(page: 2, per_page: 5)
        #   api.alarms
        #   api.alarms(page: 2, per_page: 5)
        def get_paged_alarms(args = {})
          args.merge!(:access_token => access_token)
          response = get_response("/#{api_version}/alarms?#{URI.encode_www_form(args)}")

          generic_response = Xcal::Parktronic::GenericResponse.new(response.body)

          response.code == '200' && generic_response.has_key?(:alarms) ?
            generic_response.alarms.map { |alarm| Xcal::Parktronic::GenericResponse.new(alarm.alarm, self) } : generic_response
        end
        alias :alarms :get_paged_alarms

        # Fetches alarm with specific ID
        #
        # ==== Parameters
        # * +id+ alarm ID
        #
        # ==== Examples
        #   api.get_alarm(2)
        def get_alarm(id)
          response = get_response("/#{api_version}/alarms/#{id}?access_token=#{access_token}")

          generic_response = Xcal::Parktronic::GenericResponse.new(response.body)
          response.code == '200' ? Xcal::Parktronic::GenericResponse.new(generic_response.alarm, self) : generic_response
        end
        alias :alarm :get_alarm


        # Posts new alarm
        #
        # ==== Parameters
        # * +alarm+ hash of Alarm data.
        # * +events+ array of Events or leave blank for creating alarm without events.
        #
        # ==== Examples
        #   # Creates only Alarm, without Events
        #   api.post_alarm(alarm: {name: 'alarm name', originating_system: 'Source System', impact_level: 'low'})
        #   # Creates Alarm with Events
        #   alarm_params    = {name: 'alarm name', originating_system: 'Source System', impact_level: 'low'}
        #   event_1_params  = {subject: 'EventSubj', description: 'EventDesc', host_impacted: 'host', initiated_at: '2013-11-22T01:00:24Z', service_impacted: 'EventSvc', incident_status: 'CRITICAL'}
        #   api.post_alarm( alarm: alarm_params, events: [event_1_params, event_2_params, ...] )
        def post_alarm(args = {})
          url_path  = args[:events].nil? ? 'alarms/create_without_events' : 'alarms'
          request   = Net::HTTP::Post.new("/#{api_version}/#{url_path}", 'Content-Type' => 'application/json')

          params    = { access_token: access_token, alarm: args[:alarm] }
          params.merge!(events: args[:events]) unless args[:events].nil?

          request.body = params.to_json
          response = http.start { |net| net.request(request) }

          Xcal::Parktronic::GenericResponse.new(response.body)
        end

        # Update alarm with specific ID
        #
        # ==== Parameters
        # * +id+ alarm ID
        # * +params+ alarm params
        #
        # ==== Examples
        #   api.update_alarm(2, name: 'new name')
        #   api.update_alarm(5, name: 'new name', originating_system: 'new system', description: 'test')
        def update_alarm(id, params)
          request = Net::HTTP::Patch.new("/#{api_version}/alarms/#{id}", 'Content-Type' => 'application/json')
          request.body = { access_token: access_token, alarm: params }.to_json

          response = http.start { |net| net.request(request) }
          Xcal::Parktronic::GenericResponse.new(response.body)
        end

      end

      # Find all Alarm Tags
      #
      # ==== Parameters
      # * +id+ alarm ID
      #
      # ==== Examples
      #   api.get_alarm_tags(2)
      #   api.alarm_tags(2)
      def get_alarm_tags(id)
        response = get_response("/#{api_version}/alarms/#{id}/tags?#{URI.encode_www_form(access_token: access_token)}")

        generic_response = Xcal::Parktronic::GenericResponse.new(response.body, self)
        response.code == '200' && generic_response.has_key?(:tags) ? generic_response.tags.map(&:tag) : generic_response
      end
      alias :alarm_tags :get_alarm_tags

      # Search unclosed alarm by name or tag or originating system with time range
      #
      # ==== Parameters
      # * +name+ string, alarm name
      # * +tagged_with+ string or array, tag list
      # * +time_range+ integer, time range in hours, defaults to 24 hours
      # * +originating_system+ string or array, originating system name(s), blank by default (example: 'Op5_Nagios' or 'Op5_Nagios Splunk' or ['Op5_Nagios', 'Splunk'])
      # * +page+ integer, page number, defaults to 1
      # * +per_page+ integer, per page value, defaults to 100
      # * +where+ 'where' hash of conditions for searching
      # * +extends+ array, may include: latest_event, latest_unclosed_event, with_unclosed_events, with_most_recent_events, top_alarms, select_brouha_open
      #
      # ==== Examples
      #   api.search_alarm(name: 'test alarm')
      #   api.search_alarm(tagged_with: 'test alarm', time_range: 120)
      #   api.search_alarm(where: {impact_level: 'Unknown', originating_system: 'test'}, time_range: 120)
      #   api.search_alarm(extends: ['latest_event', 'with_most_recent_events'], time_range: 120)
      def search_alarm(args = {})
        custom_scopes  = { with_most_recent_events: [] }

        #Filter
        filter = { alarms: '' }
        custom_filter = args[:originating_system]
        custom_filter = custom_filter.split(' ') if custom_filter.is_a?(String)
        filter = { alarms: custom_filter.map{|os| "originating_system = '#{os}'"}.join(' OR ') } unless custom_filter.nil?

        #Scopes (time range)
        custom_scopes[:within_event_date_range] = [(Time.now - (60 * (60 * args.fetch(:time_range, 24)))).strftime('%Y-%m-%d %H:%M:%S'), Time.now.strftime('%Y-%m-%d %H:%M:%S')]

        #Tags
        custom_scopes[:tagged_with] = args[:tagged_with] unless args[:tagged_with].nil?

        # Params for request
        scopes    = URI.escape(custom_scopes.to_json)
        search    = URI.escape({name: args.fetch(:name, '')}.to_json)
        extends   = URI.escape(args.fetch(:extends, []).to_json)
        filter    = URI.escape(args.fetch(:filter, filter).to_json)
        where     = URI.escape(args.fetch(:where, '').to_json)
        page      = args.fetch(:page, 1)
        per_page  = args.fetch(:per_page, 100)

        response = get_response("/#{api_version}/alarms/search?page=#{page}&per_page=#{per_page}&scopes=#{scopes}&search=#{search}&extends=#{extends}&filter=#{filter}&where=#{where}&access_token=#{access_token}")

        generic_response = Xcal::Parktronic::GenericResponse.new(response.body)
        response.code == '200' && generic_response.has_key?(:alarms) ? generic_response.alarms.map(&:alarm) : generic_response
      end

    end
  end
end