# File generated from our OpenAPI spec
# frozen_string_literal: true

module Stripe
  module Billing
    # Meters specify how to aggregate meter events over a billing period. Meter events represent the actions that customers take in your system. Meters attach to prices and form the basis of the bill.
    #
    # Related guide: [Usage based billing](https://docs.stripe.com/billing/subscriptions/usage-based)
    class Meter < APIResource
      extend Stripe::APIOperations::Create
      extend Stripe::APIOperations::List
      extend Stripe::APIOperations::NestedResource
      include Stripe::APIOperations::Save

      OBJECT_NAME = "billing.meter"
      def self.object_name
        "billing.meter"
      end

      nested_resource_class_methods :event_summary,
                                    operations: %i[list],
                                    resource_plural: "event_summaries"

      class CustomerMapping < Stripe::StripeObject
        # The key in the meter event payload to use for mapping the event to a customer.
        attr_reader :event_payload_key
        # The method for mapping a meter event to a customer.
        attr_reader :type
      end

      class DefaultAggregation < Stripe::StripeObject
        # Specifies how events are aggregated.
        attr_reader :formula
      end

      class StatusTransitions < Stripe::StripeObject
        # The time the meter was deactivated, if any. Measured in seconds since Unix epoch.
        attr_reader :deactivated_at
      end

      class ValueSettings < Stripe::StripeObject
        # The key in the meter event payload to use as the value for this meter.
        attr_reader :event_payload_key
      end

      class ListParams < Stripe::RequestParams
        # A cursor for use in pagination. `ending_before` is an object ID that defines your place in the list. For instance, if you make a list request and receive 100 objects, starting with `obj_bar`, your subsequent call can include `ending_before=obj_bar` in order to fetch the previous page of the list.
        attr_accessor :ending_before
        # Specifies which fields in the response should be expanded.
        attr_accessor :expand
        # A limit on the number of objects to be returned. Limit can range between 1 and 100, and the default is 10.
        attr_accessor :limit
        # A cursor for use in pagination. `starting_after` is an object ID that defines your place in the list. For instance, if you make a list request and receive 100 objects, ending with `obj_foo`, your subsequent call can include `starting_after=obj_foo` in order to fetch the next page of the list.
        attr_accessor :starting_after
        # Filter results to only include meters with the given status.
        attr_accessor :status

        def initialize(
          ending_before: nil,
          expand: nil,
          limit: nil,
          starting_after: nil,
          status: nil
        )
          @ending_before = ending_before
          @expand = expand
          @limit = limit
          @starting_after = starting_after
          @status = status
        end
      end

      class CreateParams < Stripe::RequestParams
        class CustomerMapping < Stripe::RequestParams
          # The key in the meter event payload to use for mapping the event to a customer.
          attr_accessor :event_payload_key
          # The method for mapping a meter event to a customer. Must be `by_id`.
          attr_accessor :type

          def initialize(event_payload_key: nil, type: nil)
            @event_payload_key = event_payload_key
            @type = type
          end
        end

        class DefaultAggregation < Stripe::RequestParams
          # Specifies how events are aggregated. Allowed values are `count` to count the number of events, `sum` to sum each event's value and `last` to take the last event's value in the window.
          attr_accessor :formula

          def initialize(formula: nil)
            @formula = formula
          end
        end

        class ValueSettings < Stripe::RequestParams
          # The key in the usage event payload to use as the value for this meter. For example, if the event payload contains usage on a `bytes_used` field, then set the event_payload_key to "bytes_used".
          attr_accessor :event_payload_key

          def initialize(event_payload_key: nil)
            @event_payload_key = event_payload_key
          end
        end
        # Fields that specify how to map a meter event to a customer.
        attr_accessor :customer_mapping
        # The default settings to aggregate a meter's events with.
        attr_accessor :default_aggregation
        # The meter’s name. Not visible to the customer.
        attr_accessor :display_name
        # The name of the meter event to record usage for. Corresponds with the `event_name` field on meter events.
        attr_accessor :event_name
        # The time window which meter events have been pre-aggregated for, if any.
        attr_accessor :event_time_window
        # Specifies which fields in the response should be expanded.
        attr_accessor :expand
        # Fields that specify how to calculate a meter event's value.
        attr_accessor :value_settings

        def initialize(
          customer_mapping: nil,
          default_aggregation: nil,
          display_name: nil,
          event_name: nil,
          event_time_window: nil,
          expand: nil,
          value_settings: nil
        )
          @customer_mapping = customer_mapping
          @default_aggregation = default_aggregation
          @display_name = display_name
          @event_name = event_name
          @event_time_window = event_time_window
          @expand = expand
          @value_settings = value_settings
        end
      end

      class UpdateParams < Stripe::RequestParams
        # The meter’s name. Not visible to the customer.
        attr_accessor :display_name
        # Specifies which fields in the response should be expanded.
        attr_accessor :expand

        def initialize(display_name: nil, expand: nil)
          @display_name = display_name
          @expand = expand
        end
      end

      class DeactivateParams < Stripe::RequestParams
        # Specifies which fields in the response should be expanded.
        attr_accessor :expand

        def initialize(expand: nil)
          @expand = expand
        end
      end

      class ReactivateParams < Stripe::RequestParams
        # Specifies which fields in the response should be expanded.
        attr_accessor :expand

        def initialize(expand: nil)
          @expand = expand
        end
      end
      # Time at which the object was created. Measured in seconds since the Unix epoch.
      attr_reader :created
      # Attribute for field customer_mapping
      attr_reader :customer_mapping
      # Attribute for field default_aggregation
      attr_reader :default_aggregation
      # The meter's name.
      attr_reader :display_name
      # The name of the meter event to record usage for. Corresponds with the `event_name` field on meter events.
      attr_reader :event_name
      # The time window which meter events have been pre-aggregated for, if any.
      attr_reader :event_time_window
      # Unique identifier for the object.
      attr_reader :id
      # Has the value `true` if the object exists in live mode or the value `false` if the object exists in test mode.
      attr_reader :livemode
      # String representing the object's type. Objects of the same type share the same value.
      attr_reader :object
      # The meter's status.
      attr_reader :status
      # Attribute for field status_transitions
      attr_reader :status_transitions
      # Time at which the object was last updated. Measured in seconds since the Unix epoch.
      attr_reader :updated
      # Attribute for field value_settings
      attr_reader :value_settings

      # Creates a billing meter.
      def self.create(params = {}, opts = {})
        request_stripe_object(method: :post, path: "/v1/billing/meters", params: params, opts: opts)
      end

      # When a meter is deactivated, no more meter events will be accepted for this meter. You can't attach a deactivated meter to a price.
      def deactivate(params = {}, opts = {})
        request_stripe_object(
          method: :post,
          path: format("/v1/billing/meters/%<id>s/deactivate", { id: CGI.escape(self["id"]) }),
          params: params,
          opts: opts
        )
      end

      # When a meter is deactivated, no more meter events will be accepted for this meter. You can't attach a deactivated meter to a price.
      def self.deactivate(id, params = {}, opts = {})
        request_stripe_object(
          method: :post,
          path: format("/v1/billing/meters/%<id>s/deactivate", { id: CGI.escape(id) }),
          params: params,
          opts: opts
        )
      end

      # Retrieve a list of billing meters.
      def self.list(params = {}, opts = {})
        request_stripe_object(method: :get, path: "/v1/billing/meters", params: params, opts: opts)
      end

      # When a meter is reactivated, events for this meter can be accepted and you can attach the meter to a price.
      def reactivate(params = {}, opts = {})
        request_stripe_object(
          method: :post,
          path: format("/v1/billing/meters/%<id>s/reactivate", { id: CGI.escape(self["id"]) }),
          params: params,
          opts: opts
        )
      end

      # When a meter is reactivated, events for this meter can be accepted and you can attach the meter to a price.
      def self.reactivate(id, params = {}, opts = {})
        request_stripe_object(
          method: :post,
          path: format("/v1/billing/meters/%<id>s/reactivate", { id: CGI.escape(id) }),
          params: params,
          opts: opts
        )
      end

      # Updates a billing meter.
      def self.update(id, params = {}, opts = {})
        request_stripe_object(
          method: :post,
          path: format("/v1/billing/meters/%<id>s", { id: CGI.escape(id) }),
          params: params,
          opts: opts
        )
      end
    end
  end
end