mina_node_native/graphql/

mod.rs

use account::{create_account_loader, AccountLoader, GraphQLAccount};
use block::{GraphQLBlock, GraphQLSnarkJob, GraphQLUserCommands};
use juniper::{graphql_value, EmptySubscription, FieldError, GraphQLEnum, RootNode};
use ledger::{Account, AccountId};
use mina_core::{
    block::AppliedBlock, consensus::ConsensusConstants, constants::constraint_constants,
    NetworkConfig,
};
use mina_node_common::rpc::RpcSender;
use mina_p2p_messages::v2::{
    conv, LedgerHash, MinaBaseSignedCommandStableV2, MinaBaseUserCommandStableV2,
    MinaBaseZkappCommandTStableV1WireStableV1, TokenIdKeyHash, TransactionHash,
};
use mina_signer::CompressedPubKey;
use node::{
    account::AccountPublicKey,
    ledger::read::LedgerStatus,
    rpc::{
        AccountQuery, GetBlockQuery, PooledCommandsQuery, RpcBestChainResponse,
        RpcGenesisBlockResponse, RpcGetBlockResponse, RpcLedgerAccountDelegatorsGetResponse,
        RpcLedgerStatusGetResponse, RpcNodeStatus, RpcPooledUserCommandsResponse,
        RpcPooledZkappCommandsResponse, RpcRequest, RpcSnarkPoolCompletedJobsResponse,
        RpcSnarkPoolPendingJobsGetResponse, RpcSnarkerConfig, RpcStatusGetResponse,
        RpcSyncStatsGetResponse, RpcTransactionInjectResponse, RpcTransactionStatusGetResponse,
        SyncStatsQuery,
    },
    stats::sync::SyncKind,
    BuildEnv,
};
use o1_utils::field_helpers::FieldHelpersError;
use snark::{GraphQLPendingSnarkWork, GraphQLSnarkWorker};
use std::str::FromStr;
use tokio::sync::OnceCell;
use transaction::GraphQLTransactionStatus;
use warp::{Filter, Rejection, Reply};
use zkapp::GraphQLZkapp;

pub mod account;
pub mod block;
pub mod constants;
pub mod snark;
pub mod transaction;
pub mod user_command;
pub mod zkapp;

/// Base58 encoded public key
pub type GraphQLPublicKey = String;

#[derive(Debug, thiserror::Error)]
pub enum Error {
    #[error("Conversion error: {0}")]
    Conversion(ConversionError),
    #[error("State machine empty response")]
    StateMachineEmptyResponse,
    #[error("Custom: {0}")]
    Custom(String),
}

#[derive(Debug, thiserror::Error)]
pub enum ConversionError {
    #[error(transparent)]
    Io(#[from] std::io::Error),
    #[error(transparent)]
    Conversion(#[from] mina_p2p_messages::v2::conv::Error),
    #[error("Wrong variant")]
    WrongVariant,
    #[error("SerdeJson: {0}")]
    SerdeJson(#[from] serde_json::Error),
    #[error("Base58Check: {0}")]
    Base58Check(#[from] mina_p2p_messages::b58::FromBase58CheckError),
    #[error("Base58 error: {0}")]
    Base58(#[from] bs58::decode::Error),
    #[error(transparent)]
    InvalidDecimalNumber(#[from] mina_p2p_messages::bigint::InvalidDecimalNumber),
    #[error("Invalid bigint")]
    InvalidBigInt,
    #[error("Invalid hex")]
    InvalidHex,
    #[error(transparent)]
    ParseInt(#[from] std::num::ParseIntError),
    #[error(transparent)]
    EnumParse(#[from] strum::ParseError),
    #[error(transparent)]
    TryFromInt(#[from] std::num::TryFromIntError),
    #[error("Missing field: {0}")]
    MissingField(String),
    #[error("Invalid length")]
    InvalidLength,
    #[error("Custom: {0}")]
    Custom(String),
    #[error(transparent)]
    FieldHelpers(#[from] FieldHelpersError),
    #[error("Failed to convert integer to i32")]
    Integer,
}

impl From<ConversionError> for Error {
    fn from(value: ConversionError) -> Self {
        Error::Conversion(value)
    }
}

/// Context for the GraphQL API
///
/// This is used to share state between the GraphQL queries and mutations.
///
/// The caching used here is only valid for the lifetime of the context i.e. for
/// one request which is the goal as we can have multiple sources for one
/// request.
/// This optimizes the number of request to the state machine
pub struct Context {
    rpc_sender: RpcSender,
    account_loader: AccountLoader,
    // Caches
    statemachine_status_cache: OnceCell<Option<RpcNodeStatus>>,
    best_tip_cache: OnceCell<Option<AppliedBlock>>,
    ledger_status_cache: OnceCell<Option<LedgerStatus>>,
}

impl juniper::Context for Context {}

impl Context {
    pub fn new(rpc_sender: RpcSender) -> Self {
        Self {
            rpc_sender: rpc_sender.clone(),
            statemachine_status_cache: OnceCell::new(),
            best_tip_cache: OnceCell::new(),
            ledger_status_cache: OnceCell::new(),
            account_loader: create_account_loader(rpc_sender.clone()),
        }
    }

    pub(crate) async fn get_or_fetch_status(&self) -> RpcStatusGetResponse {
        self.statemachine_status_cache
            .get_or_init(|| async {
                self.rpc_sender
                    .oneshot_request(RpcRequest::StatusGet)
                    .await
                    .flatten()
            })
            .await
            .clone()
    }

    pub(crate) async fn get_or_fetch_best_tip(&self) -> Option<AppliedBlock> {
        self.best_tip_cache
            .get_or_init(|| async {
                self.rpc_sender
                    .oneshot_request(RpcRequest::BestChain(1))
                    .await
                    .and_then(|blocks: RpcBestChainResponse| blocks.first().cloned())
            })
            .await
            .clone()
    }

    pub(crate) async fn get_or_fetch_ledger_status(
        &self,
        ledger_hash: &LedgerHash,
    ) -> RpcLedgerStatusGetResponse {
        self.ledger_status_cache
            .get_or_init(|| async {
                self.rpc_sender
                    .oneshot_request(RpcRequest::LedgerStatusGet(ledger_hash.clone()))
                    .await
                    .flatten()
            })
            .await
            .clone()
    }

    pub(crate) async fn load_account(&self, account_id: AccountId) -> Option<GraphQLAccount> {
        self.account_loader.try_load(account_id).await.ok()?.ok()
    }

    pub async fn fetch_delegators(
        &self,
        ledger_hash: LedgerHash,
        account_id: AccountId,
    ) -> RpcLedgerAccountDelegatorsGetResponse {
        self.rpc_sender
            .oneshot_request(RpcRequest::LedgerAccountDelegatorsGet(
                ledger_hash.clone(),
                account_id.clone(),
            ))
            .await
            .flatten()
    }
}

#[derive(Clone, Copy, Debug, GraphQLEnum)]
#[allow(clippy::upper_case_acronyms)]
enum SyncStatus {
    CONNECTING,
    LISTENING,
    OFFLINE,
    BOOTSTRAP,
    SYNCED,
    CATCHUP,
}

#[derive(Clone, Copy, Debug)]
pub struct Query;

/// GraphQL Query endpoints exposed by the Mina node
///
/// # Available Queries:
///
/// ## Account Management
/// - `account` - Retrieve account information for a public key
/// - `current_snark_worker` - Get information about the current SNARK worker
///
/// ## Blockchain State
/// - `sync_status` - Get the synchronization status of the node
/// - `best_chain` - Retrieve the best chain of blocks
/// - `block` - Get a specific block by hash or height
/// - `genesis_block` - Retrieve the genesis block
/// - `genesis_constants` - Get genesis configuration constants
/// - `daemon_status` - Get the daemon status information
///
/// ## Transaction Pool
/// - `pooled_user_commands` - Query pending user commands in the transaction
///   pool
/// - `pooled_zkapp_commands` - Query pending zkApp commands in the transaction
///   pool
/// - `transaction_status` - Check the status of a transaction
///
/// ## SNARK Pool
/// - `snark_pool` - Get completed SNARK jobs
/// - `pending_snark_work` - Get pending SNARK work items
///
/// ## Network Information
/// - `network_id` - Get the chain-agnostic network identifier
/// - `version` - Get the node version (git commit hash)
#[juniper::graphql_object(context = Context)]
impl Query {
    /// Retrieve account information for a given public key
    ///
    /// # Arguments
    /// - `public_key`: Base58-encoded public key
    /// - `token`: Optional token ID (defaults to MINA token if not provided)
    ///
    /// # Returns
    /// Account information including balance, nonce, delegate, and other fields
    async fn account(
        public_key: String,
        token: Option<String>,
        context: &Context,
    ) -> juniper::FieldResult<account::GraphQLAccount> {
        let public_key = AccountPublicKey::from_str(&public_key)?;
        let req = match token {
            None => AccountQuery::SinglePublicKey(public_key),
            Some(token) => {
                let token_id = TokenIdKeyHash::from_str(&token)?;
                AccountQuery::PubKeyWithTokenId(public_key, token_id)
            }
        };
        let accounts: Vec<Account> = context
            .rpc_sender
            .oneshot_request(RpcRequest::LedgerAccountsGet(req))
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        Ok(accounts
            .first()
            .cloned()
            .ok_or(Error::StateMachineEmptyResponse)?
            .try_into()?)
    }

    /// Get the current synchronization status of the node
    ///
    /// # Returns
    /// One of: CONNECTING, LISTENING, OFFLINE, BOOTSTRAP, SYNCED, CATCHUP
    async fn sync_status(context: &Context) -> juniper::FieldResult<SyncStatus> {
        let state: RpcSyncStatsGetResponse = context
            .rpc_sender
            .oneshot_request(RpcRequest::SyncStatsGet(SyncStatsQuery { limit: Some(1) }))
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        if let Some(state) = state.as_ref().and_then(|s| s.first()) {
            if state.synced.is_some() {
                Ok(SyncStatus::SYNCED)
            } else {
                match &state.kind {
                    SyncKind::Bootstrap => Ok(SyncStatus::BOOTSTRAP),
                    SyncKind::Catchup => Ok(SyncStatus::CATCHUP),
                }
            }
        } else {
            Ok(SyncStatus::LISTENING)
        }
    }

    /// Retrieve the best chain of blocks from the transition frontier
    ///
    /// # Arguments
    /// - `max_length`: Maximum number of blocks to return
    ///
    /// # Returns
    /// List of blocks in the best chain, ordered from newest to oldest
    async fn best_chain(
        max_length: i32,
        context: &Context,
    ) -> juniper::FieldResult<Vec<GraphQLBlock>> {
        let best_chain: Vec<AppliedBlock> = context
            .rpc_sender
            .oneshot_request(RpcRequest::BestChain(max_length as u32))
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        Ok(best_chain
            .into_iter()
            .map(|v| v.try_into())
            .collect::<Result<Vec<_>, _>>()?)
    }

    /// Get daemon status information including chain ID and configuration
    ///
    /// # Returns
    /// Daemon status with chain ID, configuration, and other metadata
    async fn daemon_status(
        _context: &Context,
    ) -> juniper::FieldResult<constants::GraphQLDaemonStatus> {
        Ok(constants::GraphQLDaemonStatus)
    }

    /// Retrieve genesis configuration constants
    ///
    /// # Returns
    /// Genesis constants including protocol parameters and constraints
    async fn genesis_constants(
        context: &Context,
    ) -> juniper::FieldResult<constants::GraphQLGenesisConstants> {
        let consensus_constants: ConsensusConstants = context
            .rpc_sender
            .oneshot_request(RpcRequest::ConsensusConstantsGet)
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;
        let constraint_constants = constraint_constants();

        Ok(constants::GraphQLGenesisConstants::try_new(
            constraint_constants.clone(),
            consensus_constants,
        )?)
    }

    /// Check the status of a transaction
    ///
    /// # Arguments
    /// - `payment`: Base64-encoded signed command (mutually exclusive with
    ///   zkapp_transaction)
    /// - `zkapp_transaction`: Base64-encoded zkApp command (mutually exclusive with payment)
    ///
    /// # Returns
    /// Transaction status (PENDING, INCLUDED, or UNKNOWN)
    async fn transaction_status(
        payment: Option<String>,
        zkapp_transaction: Option<String>,
        context: &Context,
    ) -> juniper::FieldResult<GraphQLTransactionStatus> {
        if payment.is_some() && zkapp_transaction.is_some() {
            return Err(Error::Custom(
                "Cannot provide both payment and zkapp transaction".to_string(),
            )
            .into());
        }

        let tx = if let Some(payment) = payment {
            MinaBaseUserCommandStableV2::SignedCommand(MinaBaseSignedCommandStableV2::from_base64(
                &payment,
            )?)
        } else if let Some(zkapp_transaction) = zkapp_transaction {
            MinaBaseUserCommandStableV2::ZkappCommand(
                MinaBaseZkappCommandTStableV1WireStableV1::from_base64(&zkapp_transaction)?,
            )
        } else {
            return Err(Error::Custom(
                "Must provide either payment or zkapp transaction".to_string(),
            )
            .into());
        };
        let res: RpcTransactionStatusGetResponse = context
            .rpc_sender
            .oneshot_request(RpcRequest::TransactionStatusGet(tx))
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        Ok(GraphQLTransactionStatus::from(res))
    }

    /// Retrieve a block with the given state hash or height from the transition frontier
    ///
    /// # Arguments
    /// - `height`: Block height (mutually exclusive with state_hash)
    /// - `state_hash`: Block state hash (mutually exclusive with height)
    ///
    /// # Returns
    /// Block data including transactions, SNARK jobs, and metadata
    async fn block(
        height: Option<i32>,
        state_hash: Option<String>,
        context: &Context,
    ) -> juniper::FieldResult<GraphQLBlock> {
        let query = match (height, state_hash) {
            (Some(height), None) => GetBlockQuery::Height(height.try_into().unwrap_or(u32::MAX)),
            (None, Some(state_hash)) => GetBlockQuery::Hash(state_hash.parse()?),
            _ => {
                return Err(Error::Custom(
                    "Must provide exactly one of state hash, height".to_owned(),
                )
                .into());
            }
        };

        let res: Option<RpcGetBlockResponse> = context
            .rpc_sender
            .oneshot_request(RpcRequest::GetBlock(query.clone()))
            .await;

        match res {
            None => Err(Error::Custom("response channel dropped".to_owned()).into()),
            Some(None) => match query {
                GetBlockQuery::Hash(hash) => Err(Error::Custom(format!(
                    "Could not find block with hash: `{}` in transition frontier",
                    hash
                ))
                .into()),
                GetBlockQuery::Height(height) => Err(Error::Custom(format!(
                    "Could not find block with height: `{}` in transition frontier",
                    height
                ))
                .into()),
            },
            Some(Some(block)) => Ok(GraphQLBlock::try_from(block)?),
        }
    }

    /// Retrieve all the scheduled user commands for a specified sender that
    /// the current daemon sees in its transaction pool. All scheduled
    /// commands are queried if no sender is specified
    ///
    /// Arguments:
    /// - `public_key`: base58 encoded [`AccountPublicKey`]
    /// - `hashes`: list of base58 encoded [`TransactionHash`]es
    /// - `ids`: list of base64 encoded [`MinaBaseZkappCommandTStableV1WireStableV1`]
    async fn pooled_user_commands(
        &self,
        public_key: Option<String>,
        hashes: Option<Vec<String>>,
        ids: Option<Vec<String>>,
        context: &Context,
    ) -> juniper::FieldResult<Vec<GraphQLUserCommands>> {
        let query = parse_pooled_commands_query(
            public_key,
            hashes,
            ids,
            MinaBaseSignedCommandStableV2::from_base64,
        )?;

        let res: RpcPooledUserCommandsResponse = context
            .rpc_sender
            .oneshot_request(RpcRequest::PooledUserCommands(query))
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        Ok(res
            .into_iter()
            .map(GraphQLUserCommands::try_from)
            .collect::<Result<Vec<_>, _>>()?)
    }

    /// Retrieve all the scheduled zkApp commands for a specified sender that
    ///  the current daemon sees in its transaction pool. All scheduled
    ///  commands are queried if no sender is specified
    ///
    /// Arguments:
    /// - `public_key`: base58 encoded [`AccountPublicKey`]
    /// - `hashes`: list of base58 encoded [`TransactionHash`]es
    /// - `ids`: list of base64 encoded [`MinaBaseZkappCommandTStableV1WireStableV1`]
    async fn pooled_zkapp_commands(
        public_key: Option<String>,
        hashes: Option<Vec<String>>,
        ids: Option<Vec<String>>,
        context: &Context,
    ) -> juniper::FieldResult<Vec<GraphQLZkapp>> {
        let query = parse_pooled_commands_query(
            public_key,
            hashes,
            ids,
            MinaBaseZkappCommandTStableV1WireStableV1::from_base64,
        )?;

        let res: RpcPooledZkappCommandsResponse = context
            .rpc_sender
            .oneshot_request(RpcRequest::PooledZkappCommands(query))
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        Ok(res
            .into_iter()
            .map(GraphQLZkapp::try_from)
            .collect::<Result<Vec<_>, _>>()?)
    }

    /// Retrieve the genesis block
    ///
    /// # Returns
    /// The genesis block data
    async fn genesis_block(context: &Context) -> juniper::FieldResult<GraphQLBlock> {
        let block = context
            .rpc_sender
            .oneshot_request::<RpcGenesisBlockResponse>(RpcRequest::GenesisBlockGet)
            .await
            .ok_or(Error::StateMachineEmptyResponse)?
            .ok_or(Error::StateMachineEmptyResponse)?;

        Ok(GraphQLBlock::try_from(AppliedBlock {
            block,
            just_emitted_a_proof: false,
        })?)
    }

    /// Get completed SNARK jobs from the SNARK pool
    ///
    /// # Returns
    /// List of completed SNARK jobs with proofs and fees
    async fn snark_pool(context: &Context) -> juniper::FieldResult<Vec<GraphQLSnarkJob>> {
        let jobs: RpcSnarkPoolCompletedJobsResponse = context
            .rpc_sender
            .oneshot_request(RpcRequest::SnarkPoolCompletedJobsGet)
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        Ok(jobs.iter().map(GraphQLSnarkJob::from).collect())
    }

    /// Get pending SNARK work items that need to be completed
    ///
    /// # Returns
    /// List of pending SNARK work items with job specifications
    async fn pending_snark_work(
        context: &Context,
    ) -> juniper::FieldResult<Vec<GraphQLPendingSnarkWork>> {
        let jobs: RpcSnarkPoolPendingJobsGetResponse = context
            .rpc_sender
            .oneshot_request(RpcRequest::SnarkPoolPendingJobsGet)
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        Ok(jobs
            .into_iter()
            .map(GraphQLPendingSnarkWork::try_from)
            .collect::<Result<Vec<_>, _>>()?)
    }

    /// The chain-agnostic identifier of the network
    ///
    /// # Returns
    /// Network identifier in the format "mina:<network_name>"
    #[graphql(name = "networkID")]
    async fn network_id(_context: &Context) -> juniper::FieldResult<String> {
        let res = format!("mina:{}", NetworkConfig::global().name);
        Ok(res)
    }

    /// The version of the node (git commit hash)
    ///
    /// # Returns
    /// Git commit hash of the current node build
    async fn version(_context: &Context) -> juniper::FieldResult<String> {
        let res = BuildEnv::get().git.commit_hash;
        Ok(res)
    }

    /// Get information about the current SNARK worker if configured
    ///
    /// # Returns
    /// SNARK worker configuration including public key, account, and fee
    async fn current_snark_worker(
        &self,
        context: &Context,
    ) -> juniper::FieldResult<Option<GraphQLSnarkWorker>> {
        let config: Option<RpcSnarkerConfig> = context
            .rpc_sender
            .oneshot_request(RpcRequest::SnarkerConfig)
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        let Some(config) = config else {
            return Ok(None);
        };

        let account = context
            .load_account(AccountId {
                public_key: CompressedPubKey::try_from(&config.public_key)?,
                token_id: TokenIdKeyHash::default().into(),
            })
            .await;

        Ok(Some(GraphQLSnarkWorker {
            key: config.public_key.to_string(),
            account,
            fee: config.fee.to_string(),
        }))
    }
}

async fn inject_tx<R>(
    cmd: MinaBaseUserCommandStableV2,
    context: &Context,
) -> juniper::FieldResult<R>
where
    R: TryFrom<MinaBaseUserCommandStableV2>,
{
    let res: RpcTransactionInjectResponse = context
        .rpc_sender
        .oneshot_request(RpcRequest::TransactionInject(vec![cmd]))
        .await
        .ok_or(Error::StateMachineEmptyResponse)?;

    match res {
        RpcTransactionInjectResponse::Success(res) => {
            let cmd: MinaBaseUserCommandStableV2 = match res.first().cloned() {
                Some(cmd) => cmd.into(),
                _ => unreachable!(),
            };
            cmd.try_into().map_err(|_| {
                FieldError::new(
                    "Failed to convert transaction to the required type".to_string(),
                    graphql_value!(null),
                )
            })
        }
        RpcTransactionInjectResponse::Rejected(rejected) => {
            let error_list = rejected
                .into_iter()
                .map(|(_, err)| graphql_value!({ "message": err.to_string() }))
                .collect::<Vec<_>>();

            Err(FieldError::new(
                "Transaction rejected",
                graphql_value!(juniper::Value::List(error_list)),
            ))
        }
        RpcTransactionInjectResponse::Failure(failure) => {
            let error_list = failure
                .into_iter()
                .map(|err| graphql_value!({ "message": err.to_string() }))
                .collect::<Vec<_>>();

            Err(FieldError::new(
                "Transaction failed",
                graphql_value!(juniper::Value::List(error_list)),
            ))
        }
    }
}

#[derive(Clone, Debug)]
pub struct Mutation;

/// GraphQL Mutation endpoints exposed by the Mina node
///
/// # Available Mutations:
///
/// ## Transaction Submission
/// - `send_zkapp` - Submit a zkApp transaction to the network
/// - `send_payment` - Send a payment transaction
/// - `send_delegation` - Send a delegation transaction
#[juniper::graphql_object(context = Context)]
impl Mutation {
    /// Submit a zkApp transaction to the network
    ///
    /// # Arguments
    /// - `input`: zkApp command with account updates and fee payer information
    ///
    /// # Returns
    /// Transaction response with hash and zkApp command details
    async fn send_zkapp(
        input: zkapp::SendZkappInput,
        context: &Context,
    ) -> juniper::FieldResult<zkapp::GraphQLSendZkappResponse> {
        inject_tx(input.try_into()?, context).await
    }

    /// Send a payment transaction
    ///
    /// # Arguments
    /// - `input`: Payment details including sender, receiver, amount, fee, and memo
    /// - `signature`: Transaction signature
    ///
    /// # Returns
    /// Payment response with transaction hash and details
    async fn send_payment(
        input: user_command::InputGraphQLPayment,
        signature: user_command::UserCommandSignature,
        context: &Context,
    ) -> juniper::FieldResult<user_command::GraphQLSendPaymentResponse> {
        // Grab the sender's account to get the infered nonce
        let token_id = TokenIdKeyHash::default();
        let public_key = AccountPublicKey::from_str(&input.from)
            .map_err(|e| Error::Conversion(ConversionError::Base58Check(e)))?;

        let accounts: Vec<Account> = context
            .rpc_sender
            .oneshot_request(RpcRequest::LedgerAccountsGet(
                AccountQuery::PubKeyWithTokenId(public_key, token_id),
            ))
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        let infered_nonce = accounts
            .first()
            .ok_or(Error::StateMachineEmptyResponse)?
            .nonce;

        let command = input
            .create_user_command(infered_nonce, signature)
            .map_err(Error::Conversion)?;

        inject_tx(command, context).await
    }

    /// Send a delegation transaction
    ///
    /// # Arguments
    /// - `input`: Delegation details including delegator, delegate, fee, and memo
    /// - `signature`: Transaction signature
    ///
    /// # Returns
    /// Delegation response with transaction hash and details
    async fn send_delegation(
        input: user_command::InputGraphQLDelegation,
        signature: user_command::UserCommandSignature,
        context: &Context,
    ) -> juniper::FieldResult<user_command::GraphQLSendDelegationResponse> {
        // Payment commands are always for the default (MINA) token
        let token_id = TokenIdKeyHash::default();
        let public_key = AccountPublicKey::from_str(&input.from)?;

        // Grab the sender's account to get the infered nonce
        let accounts: Vec<Account> = context
            .rpc_sender
            .oneshot_request(RpcRequest::LedgerAccountsGet(
                AccountQuery::PubKeyWithTokenId(public_key, token_id),
            ))
            .await
            .ok_or(Error::StateMachineEmptyResponse)?;

        let infered_nonce = accounts
            .first()
            .ok_or(Error::StateMachineEmptyResponse)?
            .nonce;
        let command = input.create_user_command(infered_nonce, signature)?;

        inject_tx(command, context).await
    }
}

pub fn routes(
    rpc_sernder: RpcSender,
) -> impl Filter<Error = Rejection, Extract = impl Reply> + Clone {
    let state = warp::any().map(move || Context::new(rpc_sernder.clone()));
    let schema = RootNode::new(Query, Mutation, EmptySubscription::<Context>::new());
    let graphql_filter = juniper_warp::make_graphql_filter(schema, state.boxed());
    let graphiql_filter = juniper_warp::graphiql_filter("/graphql", None);
    let playground_filter = juniper_warp::playground_filter("/graphql", None);

    (warp::post().and(warp::path("graphql")).and(graphql_filter))
        .or(warp::get()
            .and(warp::path("playground"))
            .and(playground_filter))
        .or(warp::get().and(warp::path("graphiql")).and(graphiql_filter))
}

/// Helper function used by [`Query::pooled_user_commands`] and
/// [`Query::pooled_zkapp_commands`] to parse public key, transaction hashes and
/// command ids
fn parse_pooled_commands_query<ID, F>(
    public_key: Option<String>,
    hashes: Option<Vec<String>>,
    ids: Option<Vec<String>>,
    id_map_fn: F,
) -> Result<PooledCommandsQuery<ID>, ConversionError>
where
    F: Fn(&str) -> Result<ID, conv::Error>,
{
    let public_key = match public_key {
        Some(public_key) => Some(AccountPublicKey::from_str(&public_key)?),
        None => None,
    };

    let hashes = match hashes {
        Some(hashes) => Some(
            hashes
                .into_iter()
                .map(|tx| TransactionHash::from_str(tx.as_str()))
                .collect::<Result<Vec<_>, _>>()?,
        ),
        None => None,
    };

    let ids = match ids {
        Some(ids) => Some(
            ids.into_iter()
                .map(|id| id_map_fn(id.as_str()))
                .collect::<Result<Vec<_>, _>>()?,
        ),
        None => None,
    };

    Ok(PooledCommandsQuery {
        public_key,
        hashes,
        ids,
    })
}