// Copyright 2021 Prysmatic Labs.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
syntax = "proto3";

package ethereum.eth.v1;

import "google/protobuf/descriptor.proto";
import "google/protobuf/timestamp.proto";

import "proto/eth/ext/options.proto";
import "proto/eth/v1/attestation.proto";
import "proto/eth/v1/beacon_block.proto";
import "proto/eth/v1/beacon_state.proto";
import "proto/eth/v1/validator.proto";

option csharp_namespace = "Ethereum.Eth.V1";
option go_package = "github.com/prysmaticlabs/prysm/proto/eth/v1";
option java_multiple_files = true;
option java_outer_classname = "BeaconChainProto";
option java_package = "org.ethereum.eth.v1";
option php_namespace = "Ethereum\\Eth\\v1";

// Beacon State API related messages.

message GenesisResponse {
    Genesis data = 1;

    message Genesis {
        // UTC time specified in the chain start event in the deposit contract.
        google.protobuf.Timestamp genesis_time = 1;
        // 32 byte hash tree root of the genesis validator set.
        bytes genesis_validators_root = 2 [(ethereum.eth.ext.ssz_size) = "32"];
        // 4 byte genesis fork version.
        bytes genesis_fork_version = 3 [(ethereum.eth.ext.ssz_size) = "4"];
    }
}

message StateRequest {
    // The state id which can be any of: "head" (canonical head in node's view),
    // "genesis", "finalized", "justified", <slot>, <hex encoded stateRoot with 0x prefix>.
    bytes state_id = 1;
}

message StateRootResponse {
    StateRoot data = 1;

    message StateRoot {
        // SSZ encoded state root for the requested state.
        bytes root = 1 [(ethereum.eth.ext.ssz_size) = "32"];
    }
}

message StateForkResponse {
    Fork data = 1;
}

message StateFinalityCheckpointResponse {
    StateFinalityCheckpoint data = 1;

    message StateFinalityCheckpoint {
        ethereum.eth.v1.Checkpoint previous_justified = 1;
        ethereum.eth.v1.Checkpoint current_justified = 2;
        ethereum.eth.v1.Checkpoint finalized = 3;
    }
}

message StateValidatorsRequest {
    // The state id which can be any of: "head" (canonical head in node's view),
    // "genesis", "finalized", "justified", <slot>, <hex encoded stateRoot with 0x prefix>.
    bytes state_id = 1;

    // An array of either hex encoded public keys (with 0x prefix) or validator indexes.
    repeated bytes id = 2;

    // The status to query validators for, can be one of: pending_initialized, pending_queued, active_ongoing,
    // active_exiting, active_slashed, exited_unslashed, exited_slashed, withdrawal_possible,
    // withdrawal_done, active, pending, exited, withdrawal
    repeated ValidatorStatus status = 3;
}

message ValidatorBalancesRequest {
    // The state id which can be any of: "head" (canonical head in node's view),
    // "genesis", "finalized", "justified", <slot>, <hex encoded stateRoot with 0x prefix>.
    bytes state_id = 1;

    // An array of either hex encoded public keys (with 0x prefix) or validator indexes.
    repeated bytes id = 2;
}

message StateValidatorsResponse {
    repeated ValidatorContainer data = 1;
}

message ValidatorBalancesResponse {
    repeated ValidatorBalance data = 1;
}

message ValidatorBalance {
    // The index of the validator the retrieved balance is for.
    uint64 index = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.ValidatorIndex"];

    // The balance of the requested validator.
    uint64 balance = 2;
}

message StateValidatorRequest {
    // The state id which can be any of: "head" (canonical head in node's view),
    // "genesis", "finalized", "justified", <slot>, <hex encoded stateRoot with 0x prefix>.
    bytes state_id = 1;

    // The public key or index for the validator to retrieve information for.
    bytes validator_id = 2;
}

message StateValidatorResponse {
    ValidatorContainer data = 1;
}

message StateCommitteesRequest {
    // The state id which can be any of: "head" (canonical head in node's view),
    // "genesis", "finalized", "justified", <slot>, <hex encoded stateRoot with 0x prefix>.
    bytes state_id = 1;

    // The epoch to retrieve the committees of.
    optional uint64 epoch = 2 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.Epoch"];

    // Committee index requested.
    optional uint64 index = 3 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.CommitteeIndex"];

    // Committee slot requested.
    optional uint64 slot = 4 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.Slot"];
}

message StateCommitteesResponse {
    repeated Committee data = 1;
}

// Beacon Block API related messages.

message BlockAttestationsResponse {
    repeated ethereum.eth.v1.Attestation data = 1;
}

message BlockRootContainer {
    // 32 byte merkle tree root of the ssz encoded block.
    bytes root = 1 [(ethereum.eth.ext.ssz_size) = "32"];
}

message BlockRootResponse {
    BlockRootContainer data = 1;
}

message BlockHeadersRequest {
    // Beacon chain slot of the requested block.
    optional uint64 slot = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.Slot"];

    // 32 byte merkle tree root of the ssz encoded parent block.
    optional bytes parent_root = 2 [(ethereum.eth.ext.ssz_size) = "32"];
}

message BlockHeadersResponse {
    repeated BlockHeaderContainer data = 1;
}

message BlockRequest {
    // The block identifier. Can be one of: "head" (canonical head in node's view), "genesis",
    // "finalized", <slot>, <hex encoded blockRoot with 0x prefix>.
    bytes block_id = 1;
}

message BlockHeaderResponse {
    BlockHeaderContainer data = 1;
}

message BlockHeaderContainer {
    // 32 byte merkle tree root of the ssz encoded block.
    bytes root = 1 [(ethereum.eth.ext.ssz_size) = "32"];

    // Boolean indicating whether the block is canonical.
    bool canonical = 2;

    // Container for a signed beacon block header.
    BeaconBlockHeaderContainer header = 3;
}

message BeaconBlockHeaderContainer {
    // The unsigned beacon block header.
    BeaconBlockHeader message = 1;

    // 96 byte BLS signature from the validator that produced this block header.
    bytes signature = 2 [(ethereum.eth.ext.ssz_size) = "96"];
}

message BlockResponse {
    BeaconBlockContainer data = 1;
}

message BlockSSZResponse {
    bytes data = 1;
}

message BeaconBlockContainer {
    BeaconBlock message = 1;

    // 96 byte BLS signature from the validator that produced this block.
    bytes signature = 2 [(ethereum.eth.ext.ssz_size) = "96"];
}

// Beacon Pool related API service.

message AttestationsPoolRequest {
    optional uint64 slot = 1 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.Slot"];
    optional uint64 committee_index = 2 [(ethereum.eth.ext.cast_type) = "github.com/prysmaticlabs/eth2-types.CommitteeIndex"];
}

message SubmitAttestationsRequest {
    repeated ethereum.eth.v1.Attestation data = 1;
}

message AttestationsPoolResponse {
    repeated ethereum.eth.v1.Attestation data = 1;
}

message AttesterSlashingsPoolResponse {
    repeated AttesterSlashing data = 1;
}

message ProposerSlashingPoolResponse {
    repeated ProposerSlashing data = 1;
}

message VoluntaryExitsPoolResponse {
    repeated SignedVoluntaryExit data = 1;
}

// Beacon Config API related messages.

message ForkScheduleResponse {
    // The fork data used for beacon chain versioning.
    repeated Fork data = 1;
}

// Spec response is a generic flat map of key values.
// Values are returned with following format:
// - any value starting with 0x in the spec is returned as a hex string
// - all other values are returned as string-number
message SpecResponse {
    map<string, string> data = 1;
}

message DepositContractResponse {
    DepositContract data = 1;
}

message DepositContract {
    // The chain_id of the network.
    uint64 chain_id = 1;

    // The address of the deployed deposit contract in use.
    string address = 2;
}