syntax = "proto3";

package ibc.applications.fee.v1;

option go_package = "github.com/cosmos/ibc-go/v6/modules/apps/29-fee/types";

import "cosmos/base/v1beta1/coin.proto";
import "gogoproto/gogo.proto";
import "ibc/core/channel/v1/channel.proto";

// Fee defines the ICS29 receive, acknowledgement and timeout fees
message Fee {
  // the packet receive fee
  repeated cosmos.base.v1beta1.Coin recv_fee = 1 [
    (gogoproto.moretags)     = "yaml:\"recv_fee\"",
    (gogoproto.nullable)     = false,
    (gogoproto.castrepeated) = "github.com/cosmos/cosmos-sdk/types.Coins"
  ];
  // the packet acknowledgement fee
  repeated cosmos.base.v1beta1.Coin ack_fee = 2 [
    (gogoproto.moretags)     = "yaml:\"ack_fee\"",
    (gogoproto.nullable)     = false,
    (gogoproto.castrepeated) = "github.com/cosmos/cosmos-sdk/types.Coins"
  ];
  // the packet timeout fee
  repeated cosmos.base.v1beta1.Coin timeout_fee = 3 [
    (gogoproto.moretags)     = "yaml:\"timeout_fee\"",
    (gogoproto.nullable)     = false,
    (gogoproto.castrepeated) = "github.com/cosmos/cosmos-sdk/types.Coins"
  ];
}

// PacketFee contains ICS29 relayer fees, refund address and optional list of permitted relayers
message PacketFee {
  // fee encapsulates the recv, ack and timeout fees associated with an IBC packet
  Fee fee = 1 [(gogoproto.nullable) = false];
  // the refund address for unspent fees
  string refund_address = 2 [(gogoproto.moretags) = "yaml:\"refund_address\""];
  // optional list of relayers permitted to receive fees
  repeated string relayers = 3;
}

// PacketFees contains a list of type PacketFee
message PacketFees {
  // list of packet fees
  repeated PacketFee packet_fees = 1 [(gogoproto.moretags) = "yaml:\"packet_fees\"", (gogoproto.nullable) = false];
}

// IdentifiedPacketFees contains a list of type PacketFee and associated PacketId
message IdentifiedPacketFees {
  // unique packet identifier comprised of the channel ID, port ID and sequence
  ibc.core.channel.v1.PacketId packet_id = 1
      [(gogoproto.nullable) = false, (gogoproto.moretags) = "yaml:\"packet_id\""];
  // list of packet fees
  repeated PacketFee packet_fees = 2 [(gogoproto.moretags) = "yaml:\"packet_fees\"", (gogoproto.nullable) = false];
}