// Copyright 2015, Beeswax.IO Inc.
//
// Beeswax bidder API.

syntax="proto2";
package bid;

option java_package = "com.beeswax.bid";

import "beeswax/bid/adcandidate.proto";
import "beeswax/openrtb/openrtb.proto";
import "beeswax/adgroup/ghost_bidding.proto";

// Stinger will issue a HTTP request to the bid agent.
// The following message will be present in the body of the HTTP request.
message BidAgentRequest {
  // Fully augmented bid request.
  optional openrtb.BidRequest bid_request = 1;
  // Adcandidate is a wrapper around a line item and creatives.
  // Stinger determines all the adcandidates that are eligible to serve for
  // the given bid request.
  repeated Adcandidate adcandidates = 2;
}

// Bid agent will respond to Stinger with a HTTP response.
// The following message will be present in the body of the HTTP response.
// BidAgent can choose not to bid at all in which case it must still
// respond to the HTTP request with a 204 status code.
message BidAgentResponse {

  // AgentParams are typed <key,value> pairs denoting some custom attributes
  // of the Bid agent.
  // These params are logged and are available via Bid logs.
  // Some use cases of AgentParams:
  // - If the bidding agent uses a machine learning model, some of its
  //   attributes can be passed in via AgentParams.
  // Next Id: 6
  message AgentParams {
    optional string key = 1;
    oneof value_oneof {
      string string_value = 2;
      int32 int_value = 3;
      double double_value = 4;
      bool bool_value = 5;
    }
  }

  // Next Id: 4
  // AgentData is a container for the AgentParams (defined above) and an
  // identifier for the Agent.
  // A use case for agent_id could be the release version of the Bid Agent.
  message AgentData {
    optional string agent_id = 1;
    repeated AgentParams agent_params = 2;
    // By setting this field to true, the bidding agents can instruct Beeswax
    // to send the agent data to the exchange in the bid response. However,
    // the exchange must be willing to accept this data from the Bidding Agent.
    // Beeswax ensures that only the bidders that are whitelisted
    // by the exchange are able to utilize this feature.
    optional bool send_to_exchange = 3 [default = false];
  }

  // Next Id: 5
  // Creative represents the creative to be rendered in the openrtb bid
  // response.
  message Creative {
    // The id of the chosen creative. If the creative or the creative id are not provided,
    // Stinger will choose the creative based on the creative weighting method selected for
    // the line item (ie either randomly or in a weighted manner). If it is provided, it
    // should be one of the ids in Adcandidate.creative_ids where the Adcandidate's
    // line_item_id == Bid.line_item_id for the Bid containing this Creative message,
    // otherwise the bid will not be processed.
    optional uint64 id = 1;
    // Pixels that will be fired when the creative is served in addition
    // to the `pixels` field, which is set in `creative` object from buzz.
    // (see http://docs.beeswax.com/docs/creative)
    // This field should not be populated when the battr field has
    // AD_SUPPORTS_DYNAMIC_PIXELS(108), otherwise this bid will not be
    // processed.
    // battr field is under BidAgentRequest.bid_request.imp.(banner/video).battr
    // ; whether it is banner or video corresponds to the type of this creative.
    repeated string pixels = 2;
    // The `creative` object's `click_url` field, which is set from buzz,
    // will be replaced with this value if it is present.
    // (see http://docs.beeswax.com/docs/creative)
    // This field should not be populated when the battr field has
    // AD_SUPPORTS_DYNAMIC_CLICK_URL(109), otherwise this bid will not be
    // processed.
    // battr field is under BidAgentRequest.bid_request.imp.(banner/video).battr
    // ; whether it is banner or video corresponds to the type of this creative.
    optional string click_url_override = 3;
    // The creative's macros {{DYNAMIC:<name>:STRING}} in the value of a
    // creative content or creative template, will be replaced with the
    // content of `value`.
    // For example, if name = "foo", value = "bar", the macro
    // {{DYNAMIC:FOO:STRING}} will be replaced with "bar".
    //
    // Please note the following constraints:
    // (1) Macro expansion will only apply to the creative of the same id as
    // this containing creative object.
    // (2) Macro name is case-insensitive. (if name = "foo",
    // the macro {{DYNAMIC:FOO:STRING}} will still be replaced)
    // (3) Beeswax will pick up the first 5 dynamic macros. Additional ones will
    // be ignored.
    // (4) For a macro to be expanded as an empty string, you should
    // explicitly set the macro name in the `name` field, and leave the
    // `value` feild empty; Dynamic macros in creatives that does
    // not have a match from the `name` field here will not be expanded.
    // (5) If a dynamic macro was not expanded, a string of {{DY:<name>}}
    // (instead of {{DYNAMIC:<name>:STRING}}) will be placed at where the
    // {{DYNAMIC:<name>:STRING}} macro was placed.
    // (6) Values of dynamic macros cannot contain other Beeswax macros,
    // (including other dynamic macros), as the contained macros will
    // not be expanded.
    // (7) If the macro is part of a url, the value shold be url-safe
    // (e.g, by escaping). Note that click_url is properly escaped as a whole,
    // so if the macro is in click_url, its value does not need to
    // have extra escaping; url-safe is enough.
    //
    message Macro {
      optional string name = 1;
      optional string value = 2;
    }
    repeated Macro dynamic_macros = 4;
  }

  // Bid agent needs to select a set of Adcandidates from the request
  // and for each Adcandidate, submit a bid containing the following
  // information.
  // Next Tag: 8
  message Bid {
    optional uint64 line_item_id = 1;
    // Deprecated, use bid_price_micros instead.
    // (1) Beeswax will do validation (see (2)) and use this value only if
    // bid_price_micros is not populated.
    // (2) Validation: The adcandidate with this line_item_id in the
    // BidAgentRequest must have bidding.currency set to USD;
    // otherwise this bid will be dropped.
    optional uint64 bid_price_micros_usd = 2 [default = 0, deprecated = true];
    // Value should be the price of a single impression. Ex: 12$ CPM = 0.012$ => bid_price_micros = 12000
    optional uint64 bid_price_micros = 6 [default = 0];
    optional uint64 creative_id = 3 [deprecated = true];
    optional Creative creative = 5;
    optional AgentData agent_data = 4;
    // This field will be populated by bidding agent iff the line item is enabled for ghost bidding.
    optional adgroup.GhostBidding ghost_bidding = 7;
  }
  repeated Bid bids = 1;
}