// file: kb-onchain-transport/src/standard_ws.rs
// version: 4

//! Typed contracts for every standard Solana WebSocket subscription.

/// Effective endpoint capabilities for unstable standard subscriptions.
///
/// Configuration enables an optimistic first attempt. A persistent session may disable one
/// capability after the node explicitly reports that the method is absent or not enabled.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase")]
pub struct StandardWsCapabilities {
    /// Whether `blockSubscribe` may be attempted on this endpoint.
    pub block_subscribe: bool,
    /// Whether `slotsUpdatesSubscribe` may be attempted on this endpoint.
    pub slots_updates_subscribe: bool,
    /// Whether `voteSubscribe` may be attempted on this endpoint.
    pub vote_subscribe: bool,
}

impl crate::StandardWsCapabilities {
    /// Builds initial capabilities from request kinds explicitly advertised by an endpoint.
    pub fn from_endpoint(endpoint: &kb_config::WsEndpointConfig) -> Self {
        return Self {
            block_subscribe: endpoint_declares_method(endpoint, "blockSubscribe"),
            slots_updates_subscribe: endpoint_declares_method(endpoint, "slotsUpdatesSubscribe"),
            vote_subscribe: endpoint_declares_method(endpoint, "voteSubscribe"),
        };
    }

    fn allows(&self, method: &str) -> bool {
        return match method {
            "blockSubscribe" => self.block_subscribe,
            "slotsUpdatesSubscribe" => self.slots_updates_subscribe,
            "voteSubscribe" => self.vote_subscribe,
            _ => true,
        };
    }

    pub(crate) fn disable_method(&mut self, method: &str) -> bool {
        let capability = match method {
            "blockSubscribe" => &mut self.block_subscribe,
            "slotsUpdatesSubscribe" => &mut self.slots_updates_subscribe,
            "voteSubscribe" => &mut self.vote_subscribe,
            _ => return false,
        };
        if !*capability {
            return false;
        }
        *capability = false;
        return true;
    }

    pub(crate) fn is_unstable_method(method: &str) -> bool {
        return matches!(method, "blockSubscribe" | "slotsUpdatesSubscribe" | "voteSubscribe");
    }
}

/// Account options accepted by `accountSubscribe`.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
pub struct WsAccountSubscribeConfig {
    /// Optional commitment level.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub commitment: std::option::Option<crate::RpcCommitmentLevel>,
    /// Optional account-data encoding.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub encoding: std::option::Option<crate::RpcAccountEncoding>,
    /// Optional account-data byte slice.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub data_slice: std::option::Option<crate::RpcDataSlice>,
}

impl crate::WsAccountSubscribeConfig {
    fn validate(&self) -> kb_core::Result<()> {
        return crate::RpcAccountInfoConfig {
            encoding: self.encoding,
            data_slice: self.data_slice,
            commitment: self.commitment,
            min_context_slot: std::option::Option::None,
        }
        .validate();
    }
}

/// Filter accepted by `blockSubscribe`.
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum WsBlockFilter {
    /// Subscribe to every block.
    All,
    /// Subscribe to blocks mentioning one account or Program ID.
    MentionsAccountOrProgram(std::string::String),
}

impl serde::Serialize for crate::WsBlockFilter {
    fn serialize<Serializer>(
        &self,
        serializer: Serializer,
    ) -> std::result::Result<Serializer::Ok, Serializer::Error>
    where
        Serializer: serde::Serializer,
    {
        return match self {
            Self::All => serializer.serialize_str("all"),
            Self::MentionsAccountOrProgram(pubkey) => {
                let value = serde_json::json!({ "mentionsAccountOrProgram": pubkey });
                serde::Serialize::serialize(&value, serializer)
            },
        };
    }
}

impl<'de> serde::Deserialize<'de> for crate::WsBlockFilter {
    fn deserialize<Deserializer>(
        deserializer: Deserializer,
    ) -> std::result::Result<Self, Deserializer::Error>
    where
        Deserializer: serde::Deserializer<'de>,
    {
        let value = match <serde_json::Value as serde::Deserialize>::deserialize(deserializer) {
            std::result::Result::Ok(value) => value,
            std::result::Result::Err(error) => return std::result::Result::Err(error),
        };
        if value == serde_json::Value::String("all".to_string()) {
            return std::result::Result::Ok(Self::All);
        }
        let pubkey = value
            .as_object()
            .filter(|object| return object.len() == 1)
            .and_then(|object| return object.get("mentionsAccountOrProgram"))
            .and_then(serde_json::Value::as_str);
        return match pubkey {
            std::option::Option::Some(pubkey) => {
                std::result::Result::Ok(Self::MentionsAccountOrProgram(pubkey.to_string()))
            },
            std::option::Option::None => {
                std::result::Result::Err(<Deserializer::Error as serde::de::Error>::custom(
                    "block filter must be 'all' or mentionsAccountOrProgram",
                ))
            },
        };
    }
}

/// Options accepted by `blockSubscribe`.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
pub struct WsBlockSubscribeConfig {
    /// Optional confirmed or finalized commitment.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub commitment: std::option::Option<crate::RpcCommitmentLevel>,
    /// Optional transaction encoding.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub encoding: std::option::Option<crate::RpcTransactionEncoding>,
    /// Optional transaction detail level.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub transaction_details: std::option::Option<crate::RpcTransactionDetails>,
    /// Whether rewards are included.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub show_rewards: std::option::Option<bool>,
    /// Highest transaction version the caller can decode.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub max_supported_transaction_version: std::option::Option<u8>,
}

impl crate::WsBlockSubscribeConfig {
    fn validate(&self) -> kb_core::Result<()> {
        if self.commitment == std::option::Option::Some(crate::RpcCommitmentLevel::Processed) {
            return std::result::Result::Err(kb_core::Error::config(
                "blockSubscribe does not accept processed commitment",
            ));
        }
        return std::result::Result::Ok(());
    }
}

/// Filter accepted by `logsSubscribe`.
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum WsLogsFilter {
    /// Subscribe to non-simple-vote transaction logs.
    All,
    /// Subscribe to every transaction log, including simple votes.
    AllWithVotes,
    /// Subscribe to transactions mentioning one account or Program ID.
    Mentions(std::string::String),
}

impl serde::Serialize for crate::WsLogsFilter {
    fn serialize<Serializer>(
        &self,
        serializer: Serializer,
    ) -> std::result::Result<Serializer::Ok, Serializer::Error>
    where
        Serializer: serde::Serializer,
    {
        return match self {
            Self::All => serializer.serialize_str("all"),
            Self::AllWithVotes => serializer.serialize_str("allWithVotes"),
            Self::Mentions(pubkey) => {
                let value = serde_json::json!({ "mentions": [pubkey] });
                serde::Serialize::serialize(&value, serializer)
            },
        };
    }
}

impl<'de> serde::Deserialize<'de> for crate::WsLogsFilter {
    fn deserialize<Deserializer>(
        deserializer: Deserializer,
    ) -> std::result::Result<Self, Deserializer::Error>
    where
        Deserializer: serde::Deserializer<'de>,
    {
        let value = match <serde_json::Value as serde::Deserialize>::deserialize(deserializer) {
            std::result::Result::Ok(value) => value,
            std::result::Result::Err(error) => return std::result::Result::Err(error),
        };
        if value == serde_json::Value::String("all".to_string()) {
            return std::result::Result::Ok(Self::All);
        }
        if value == serde_json::Value::String("allWithVotes".to_string()) {
            return std::result::Result::Ok(Self::AllWithVotes);
        }
        let mentions = value
            .as_object()
            .filter(|object| return object.len() == 1)
            .and_then(|object| return object.get("mentions"))
            .and_then(serde_json::Value::as_array);
        let pubkey = mentions
            .and_then(|values| {
                if values.len() == 1 {
                    return values.first();
                }
                return std::option::Option::None;
            })
            .and_then(serde_json::Value::as_str);
        return match pubkey {
            std::option::Option::Some(pubkey) => {
                std::result::Result::Ok(Self::Mentions(pubkey.to_string()))
            },
            std::option::Option::None => {
                std::result::Result::Err(<Deserializer::Error as serde::de::Error>::custom(
                    "logs mentions filter must contain exactly one public key",
                ))
            },
        };
    }
}

/// Options accepted by `logsSubscribe`.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
pub struct WsLogsSubscribeConfig {
    /// Optional commitment level.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub commitment: std::option::Option<crate::RpcCommitmentLevel>,
}

/// Options accepted by `programSubscribe`.
#[derive(Clone, Debug, Default, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
pub struct WsProgramSubscribeConfig {
    /// Optional account filters, evaluated in order.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub filters: std::option::Option<std::vec::Vec<crate::RpcProgramAccountFilter>>,
    /// Optional account-data encoding.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub encoding: std::option::Option<crate::RpcAccountEncoding>,
    /// Optional account-data byte slice.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub data_slice: std::option::Option<crate::RpcDataSlice>,
    /// Optional commitment level.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub commitment: std::option::Option<crate::RpcCommitmentLevel>,
    /// Whether the result includes the standard context wrapper.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub with_context: std::option::Option<bool>,
}

impl crate::WsProgramSubscribeConfig {
    fn validate(&self) -> kb_core::Result<()> {
        return crate::RpcProgramAccountsConfig {
            filters: self.filters.clone(),
            encoding: self.encoding,
            data_slice: self.data_slice,
            commitment: self.commitment,
            min_context_slot: std::option::Option::None,
            with_context: self.with_context,
            sort_results: std::option::Option::None,
        }
        .validate();
    }
}

/// Options accepted by `signatureSubscribe`.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase", deny_unknown_fields)]
pub struct WsSignatureSubscribeConfig {
    /// Optional commitment level.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub commitment: std::option::Option<crate::RpcCommitmentLevel>,
    /// Whether an early `receivedSignature` notification is requested.
    #[serde(skip_serializing_if = "std::option::Option::is_none")]
    pub enable_received_notification: std::option::Option<bool>,
}

/// Typed account subscription request.
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct AccountSubscribeRequest {
    /// Account public key.
    pub pubkey: std::string::String,
    /// Optional commitment, encoding and slice options.
    pub config: std::option::Option<crate::WsAccountSubscribeConfig>,
}

/// Typed block subscription request.
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct BlockSubscribeRequest {
    /// Block selection filter.
    pub filter: crate::WsBlockFilter,
    /// Optional commitment, encoding, details, rewards and version options.
    pub config: std::option::Option<crate::WsBlockSubscribeConfig>,
}

/// Typed logs subscription request.
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct LogsSubscribeRequest {
    /// Log selection filter.
    pub filter: crate::WsLogsFilter,
    /// Optional commitment.
    pub config: std::option::Option<crate::WsLogsSubscribeConfig>,
}

/// Typed program-account subscription request.
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct ProgramSubscribeRequest {
    /// Program public key.
    pub program_id: std::string::String,
    /// Optional filters, commitment, encoding, slice and context switch.
    pub config: std::option::Option<crate::WsProgramSubscribeConfig>,
}

/// Typed root subscription request.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
pub struct RootSubscribeRequest;

/// Typed signature subscription request.
#[derive(Clone, Debug, Eq, PartialEq)]
pub struct SignatureSubscribeRequest {
    /// Transaction signature.
    pub signature: std::string::String,
    /// Optional commitment and received-notification switch.
    pub config: std::option::Option<crate::WsSignatureSubscribeConfig>,
}

/// Typed slot subscription request.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
pub struct SlotSubscribeRequest;

/// Typed unstable slot-updates subscription request.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
pub struct SlotsUpdatesSubscribeRequest;

/// Typed unstable vote subscription request.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq)]
pub struct VoteSubscribeRequest;

/// One of the nine standard Solana WebSocket subscription requests.
#[derive(Clone, Debug, Eq, PartialEq)]
pub enum StandardWsRequest {
    /// `accountSubscribe` request.
    Account(crate::AccountSubscribeRequest),
    /// `blockSubscribe` request.
    Block(crate::BlockSubscribeRequest),
    /// `logsSubscribe` request.
    Logs(crate::LogsSubscribeRequest),
    /// `programSubscribe` request.
    Program(crate::ProgramSubscribeRequest),
    /// `rootSubscribe` request.
    Root(crate::RootSubscribeRequest),
    /// `signatureSubscribe` request.
    Signature(crate::SignatureSubscribeRequest),
    /// `slotSubscribe` request.
    Slot(crate::SlotSubscribeRequest),
    /// `slotsUpdatesSubscribe` request.
    SlotsUpdates(crate::SlotsUpdatesSubscribeRequest),
    /// `voteSubscribe` request.
    Vote(crate::VoteSubscribeRequest),
}

impl crate::StandardWsRequest {
    /// Returns the canonical subscription specification.
    pub fn specification(&self) -> &'static crate::StandardWsSubscriptionSpec {
        return match self {
            Self::Account(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[0],
            Self::Block(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[1],
            Self::Logs(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[2],
            Self::Program(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[3],
            Self::Root(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[4],
            Self::Signature(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[5],
            Self::Slot(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[6],
            Self::SlotsUpdates(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[7],
            Self::Vote(_) => &crate::STANDARD_WS_SUBSCRIPTIONS[8],
        };
    }

    /// Returns the exact subscribe method.
    pub const fn subscribe_method(&self) -> &'static str {
        return match self {
            Self::Account(_) => "accountSubscribe",
            Self::Block(_) => "blockSubscribe",
            Self::Logs(_) => "logsSubscribe",
            Self::Program(_) => "programSubscribe",
            Self::Root(_) => "rootSubscribe",
            Self::Signature(_) => "signatureSubscribe",
            Self::Slot(_) => "slotSubscribe",
            Self::SlotsUpdates(_) => "slotsUpdatesSubscribe",
            Self::Vote(_) => "voteSubscribe",
        };
    }

    /// Validates capability gates and builds exact positional JSON-RPC parameters.
    pub fn params(
        &self,
        capabilities: crate::StandardWsCapabilities,
    ) -> kb_core::Result<std::vec::Vec<serde_json::Value>> {
        if !capabilities.allows(self.subscribe_method()) {
            return std::result::Result::Err(kb_core::Error::config(format!(
                "unstable WebSocket method '{}' is not enabled by the endpoint capability set",
                self.subscribe_method()
            )));
        }
        return match self {
            Self::Account(request) => account_params(request),
            Self::Block(request) => block_params(request),
            Self::Logs(request) => logs_params(request),
            Self::Program(request) => program_params(request),
            Self::Root(_) | Self::Slot(_) | Self::SlotsUpdates(_) | Self::Vote(_) => {
                std::result::Result::Ok(std::vec::Vec::new())
            },
            Self::Signature(request) => signature_params(request),
        };
    }
}

/// Typed account notification.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsAccountNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// Contextual account value.
    pub result: crate::RpcResponse<crate::RpcUiAccount>,
}

/// One block update emitted by `blockSubscribe`.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase")]
pub struct WsBlockUpdate {
    /// Block slot.
    pub slot: u64,
    /// Block when the node produced one for the slot.
    #[serde(default)]
    pub block: std::option::Option<crate::RpcConfirmedBlock>,
    /// Node-provided block error when present.
    #[serde(default)]
    pub err: std::option::Option<serde_json::Value>,
}

/// Typed block notification.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsBlockNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// Contextual block update.
    pub result: crate::RpcResponse<crate::WsBlockUpdate>,
}

/// One log notification value.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsLogsValue {
    /// Transaction signature.
    pub signature: std::string::String,
    /// Runtime transaction error, or `None` on success.
    pub err: std::option::Option<serde_json::Value>,
    /// Runtime log messages.
    pub logs: std::vec::Vec<std::string::String>,
}

/// Typed logs notification.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsLogsNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// Contextual log result.
    pub result: crate::RpcResponse<crate::WsLogsValue>,
}

/// Typed program-account notification.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsProgramNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// Contextual keyed account result.
    pub result: crate::RpcOptionalContext<crate::RpcKeyedAccount>,
}

/// Typed root notification.
#[derive(Clone, Copy, Debug, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsRootNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// New root slot.
    pub result: u64,
}

/// Signature notification result.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(untagged)]
pub enum WsSignatureValue {
    /// Final signature status.
    Status {
        /// Runtime transaction error, or `None` on success.
        err: std::option::Option<serde_json::Value>,
    },
    /// Early node-receipt marker.
    Received(std::string::String),
}

/// Typed signature notification.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsSignatureNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// Contextual receipt or final status.
    pub result: crate::RpcResponse<crate::WsSignatureValue>,
}

/// One slot progression notification.
#[derive(Clone, Copy, Debug, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsSlotInfo {
    /// Current slot.
    pub slot: u64,
    /// Parent slot.
    pub parent: u64,
    /// Current root slot.
    pub root: u64,
}

/// Typed slot notification.
#[derive(Clone, Copy, Debug, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsSlotNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// Slot progression value.
    pub result: crate::WsSlotInfo,
}

/// Transaction counters included by a frozen-slot update.
#[derive(Clone, Copy, Debug, Default, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase")]
pub struct WsSlotTransactionStats {
    /// Total transaction entries processed by the bank.
    pub num_transaction_entries: u64,
    /// Successful transactions.
    pub num_successful_transactions: u64,
    /// Failed transactions.
    pub num_failed_transactions: u64,
    /// Maximum transactions per entry.
    pub max_transactions_per_entry: u64,
}

/// One unstable slot lifecycle update.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(tag = "type", rename_all = "camelCase")]
pub enum WsSlotUpdate {
    /// First shred for a slot was received.
    FirstShredReceived {
        /// Slot.
        slot: u64,
        /// Unix timestamp in milliseconds.
        timestamp: i64,
    },
    /// Every shred for a slot was received.
    Completed {
        /// Slot.
        slot: u64,
        /// Unix timestamp in milliseconds.
        timestamp: i64,
    },
    /// A bank was created for a slot.
    CreatedBank {
        /// Slot.
        slot: u64,
        /// Parent slot.
        parent: u64,
        /// Unix timestamp in milliseconds.
        timestamp: i64,
    },
    /// A bank was frozen.
    Frozen {
        /// Slot.
        slot: u64,
        /// Unix timestamp in milliseconds.
        timestamp: i64,
        /// Bank transaction counters.
        stats: crate::WsSlotTransactionStats,
    },
    /// A slot was marked dead.
    Dead {
        /// Slot.
        slot: u64,
        /// Unix timestamp in milliseconds.
        timestamp: i64,
        /// Node-provided failure description.
        err: std::string::String,
    },
    /// A slot reached optimistic confirmation.
    OptimisticConfirmation {
        /// Slot.
        slot: u64,
        /// Unix timestamp in milliseconds.
        timestamp: i64,
    },
    /// A slot became root.
    Root {
        /// Slot.
        slot: u64,
        /// Unix timestamp in milliseconds.
        timestamp: i64,
    },
}

/// Typed unstable slot-updates notification.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsSlotsUpdatesNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// Slot lifecycle update.
    pub result: crate::WsSlotUpdate,
}

/// One vote notification value.
#[derive(Clone, Debug, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(rename_all = "camelCase")]
pub struct WsVoteValue {
    /// Vote account public key.
    pub vote_pubkey: std::string::String,
    /// Voted slots.
    pub slots: std::vec::Vec<u64>,
    /// Vote hash.
    pub hash: std::string::String,
    /// Optional vote timestamp.
    #[serde(default)]
    pub timestamp: std::option::Option<i64>,
    /// Vote transaction signature.
    pub signature: std::string::String,
}

/// Typed unstable vote notification.
#[derive(Clone, Debug, Eq, PartialEq, serde::Deserialize, serde::Serialize)]
pub struct WsVoteNotification {
    /// Remote subscription identifier.
    pub subscription: u64,
    /// Vote value.
    pub result: crate::WsVoteValue,
}

/// Typed notification emitted by one of the nine standard subscriptions.
#[derive(Clone, Debug, PartialEq, serde::Deserialize, serde::Serialize)]
#[serde(tag = "kind", content = "notification", rename_all = "camelCase")]
pub enum StandardWsNotification {
    /// `accountNotification`.
    Account(crate::WsAccountNotification),
    /// `blockNotification`.
    Block(crate::WsBlockNotification),
    /// `logsNotification`.
    Logs(crate::WsLogsNotification),
    /// `programNotification`.
    Program(crate::WsProgramNotification),
    /// `rootNotification`.
    Root(crate::WsRootNotification),
    /// `signatureNotification`.
    Signature(crate::WsSignatureNotification),
    /// `slotNotification`.
    Slot(crate::WsSlotNotification),
    /// `slotsUpdatesNotification`.
    SlotsUpdates(crate::WsSlotsUpdatesNotification),
    /// `voteNotification`.
    Vote(crate::WsVoteNotification),
}

impl crate::StandardWsNotification {
    /// Returns the remote subscription identifier.
    pub const fn subscription_id(&self) -> u64 {
        return match self {
            Self::Account(value) => value.subscription,
            Self::Block(value) => value.subscription,
            Self::Logs(value) => value.subscription,
            Self::Program(value) => value.subscription,
            Self::Root(value) => value.subscription,
            Self::Signature(value) => value.subscription,
            Self::Slot(value) => value.subscription,
            Self::SlotsUpdates(value) => value.subscription,
            Self::Vote(value) => value.subscription,
        };
    }
}

/// Parses and validates one standard WebSocket notification.
pub fn adapt_standard_ws_notification(
    notification: &crate::JsonRpcNotification,
) -> kb_core::Result<crate::StandardWsNotification> {
    let subscription = notification.params.subscription;
    let result = &notification.params.result;
    return match notification.method.as_str() {
        "accountNotification" => {
            adapt_notification_result(subscription, result, crate::WsAccountNotification::new)
                .map(crate::StandardWsNotification::Account)
        },
        "blockNotification" => {
            adapt_notification_result(subscription, result, crate::WsBlockNotification::new)
                .map(crate::StandardWsNotification::Block)
        },
        "logsNotification" => {
            adapt_notification_result(subscription, result, crate::WsLogsNotification::new)
                .map(crate::StandardWsNotification::Logs)
        },
        "programNotification" => {
            adapt_notification_result(subscription, result, crate::WsProgramNotification::new)
                .map(crate::StandardWsNotification::Program)
        },
        "rootNotification" => {
            adapt_notification_result(subscription, result, crate::WsRootNotification::new)
                .map(crate::StandardWsNotification::Root)
        },
        "signatureNotification" => {
            let adapted = adapt_notification_result(
                subscription,
                result,
                crate::WsSignatureNotification::new,
            );
            return match adapted {
                std::result::Result::Ok(notification) => {
                    if let crate::WsSignatureValue::Received(marker) = &notification.result.value {
                        if marker != "receivedSignature" {
                            return std::result::Result::Err(kb_core::Error::json(format!(
                                "unknown signature notification marker '{marker}'"
                            )));
                        }
                    }
                    std::result::Result::Ok(crate::StandardWsNotification::Signature(notification))
                },
                std::result::Result::Err(error) => std::result::Result::Err(error),
            };
        },
        "slotNotification" => {
            adapt_notification_result(subscription, result, crate::WsSlotNotification::new)
                .map(crate::StandardWsNotification::Slot)
        },
        "slotsUpdatesNotification" => {
            adapt_notification_result(subscription, result, crate::WsSlotsUpdatesNotification::new)
                .map(crate::StandardWsNotification::SlotsUpdates)
        },
        "voteNotification" => {
            adapt_notification_result(subscription, result, crate::WsVoteNotification::new)
                .map(crate::StandardWsNotification::Vote)
        },
        method => std::result::Result::Err(kb_core::Error::json(format!(
            "unsupported standard WebSocket notification method '{method}'"
        ))),
    };
}

impl crate::WsAccountNotification {
    fn new(subscription: u64, result: crate::RpcResponse<crate::RpcUiAccount>) -> Self {
        return Self { subscription, result };
    }
}

impl crate::WsBlockNotification {
    fn new(subscription: u64, result: crate::RpcResponse<crate::WsBlockUpdate>) -> Self {
        return Self { subscription, result };
    }
}

impl crate::WsLogsNotification {
    fn new(subscription: u64, result: crate::RpcResponse<crate::WsLogsValue>) -> Self {
        return Self { subscription, result };
    }
}

impl crate::WsProgramNotification {
    fn new(subscription: u64, result: crate::RpcOptionalContext<crate::RpcKeyedAccount>) -> Self {
        return Self { subscription, result };
    }
}

impl crate::WsRootNotification {
    fn new(subscription: u64, result: u64) -> Self {
        return Self { subscription, result };
    }
}

impl crate::WsSignatureNotification {
    fn new(subscription: u64, result: crate::RpcResponse<crate::WsSignatureValue>) -> Self {
        return Self { subscription, result };
    }
}

impl crate::WsSlotNotification {
    fn new(subscription: u64, result: crate::WsSlotInfo) -> Self {
        return Self { subscription, result };
    }
}

impl crate::WsSlotsUpdatesNotification {
    fn new(subscription: u64, result: crate::WsSlotUpdate) -> Self {
        return Self { subscription, result };
    }
}

impl crate::WsVoteNotification {
    fn new(subscription: u64, result: crate::WsVoteValue) -> Self {
        return Self { subscription, result };
    }
}

fn endpoint_declares_method(endpoint: &kb_config::WsEndpointConfig, method: &str) -> bool {
    let request_kind = crate::request_kind_from_method(method);
    for role in &endpoint.roles {
        if !role.enabled {
            continue;
        }
        for configured_kind in &role.request_kinds {
            if configured_kind == "*" || configured_kind == &request_kind {
                return true;
            }
        }
    }
    return false;
}

fn account_params(
    request: &crate::AccountSubscribeRequest,
) -> kb_core::Result<std::vec::Vec<serde_json::Value>> {
    let validation_result = crate::validate_solana_pubkey_text(&request.pubkey, "account pubkey");
    if let std::result::Result::Err(error) = validation_result {
        return std::result::Result::Err(error);
    }
    let mut params = std::vec![serde_json::Value::String(request.pubkey.clone())];
    if let std::option::Option::Some(config) = request.config {
        let config_result = config.validate();
        if let std::result::Result::Err(error) = config_result {
            return std::result::Result::Err(error);
        }
        let value = match crate::serialize_parameter("accountSubscribe", &config) {
            std::result::Result::Ok(value) => value,
            std::result::Result::Err(error) => return std::result::Result::Err(error),
        };
        params.push(value);
    }
    return std::result::Result::Ok(params);
}

fn block_params(
    request: &crate::BlockSubscribeRequest,
) -> kb_core::Result<std::vec::Vec<serde_json::Value>> {
    if let crate::WsBlockFilter::MentionsAccountOrProgram(pubkey) = &request.filter {
        let validation_result =
            crate::validate_solana_pubkey_text(pubkey, "block mentions account or program");
        if let std::result::Result::Err(error) = validation_result {
            return std::result::Result::Err(error);
        }
    }
    let filter = match crate::serialize_parameter("blockSubscribe", &request.filter) {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let mut params = std::vec![filter];
    if let std::option::Option::Some(config) = request.config {
        let config_result = config.validate();
        if let std::result::Result::Err(error) = config_result {
            return std::result::Result::Err(error);
        }
        let value = match crate::serialize_parameter("blockSubscribe", &config) {
            std::result::Result::Ok(value) => value,
            std::result::Result::Err(error) => return std::result::Result::Err(error),
        };
        params.push(value);
    }
    return std::result::Result::Ok(params);
}

fn logs_params(
    request: &crate::LogsSubscribeRequest,
) -> kb_core::Result<std::vec::Vec<serde_json::Value>> {
    if let crate::WsLogsFilter::Mentions(pubkey) = &request.filter {
        let validation_result = crate::validate_solana_pubkey_text(pubkey, "logs mention");
        if let std::result::Result::Err(error) = validation_result {
            return std::result::Result::Err(error);
        }
    }
    let filter = match crate::serialize_parameter("logsSubscribe", &request.filter) {
        std::result::Result::Ok(value) => value,
        std::result::Result::Err(error) => return std::result::Result::Err(error),
    };
    let mut params = std::vec![filter];
    if let std::option::Option::Some(config) = request.config {
        let value = match crate::serialize_parameter("logsSubscribe", &config) {
            std::result::Result::Ok(value) => value,
            std::result::Result::Err(error) => return std::result::Result::Err(error),
        };
        params.push(value);
    }
    return std::result::Result::Ok(params);
}

fn program_params(
    request: &crate::ProgramSubscribeRequest,
) -> kb_core::Result<std::vec::Vec<serde_json::Value>> {
    let validation_result = crate::validate_solana_pubkey_text(&request.program_id, "program id");
    if let std::result::Result::Err(error) = validation_result {
        return std::result::Result::Err(error);
    }
    let mut params = std::vec![serde_json::Value::String(request.program_id.clone())];
    if let std::option::Option::Some(config) = &request.config {
        let config_result = config.validate();
        if let std::result::Result::Err(error) = config_result {
            return std::result::Result::Err(error);
        }
        let value = match crate::serialize_parameter("programSubscribe", config) {
            std::result::Result::Ok(value) => value,
            std::result::Result::Err(error) => return std::result::Result::Err(error),
        };
        params.push(value);
    }
    return std::result::Result::Ok(params);
}

fn signature_params(
    request: &crate::SignatureSubscribeRequest,
) -> kb_core::Result<std::vec::Vec<serde_json::Value>> {
    let validation_result =
        crate::validate_transaction_signature_text(&request.signature, "transaction signature");
    if let std::result::Result::Err(error) = validation_result {
        return std::result::Result::Err(error);
    }
    let mut params = std::vec![serde_json::Value::String(request.signature.clone())];
    if let std::option::Option::Some(config) = request.config {
        let value = match crate::serialize_parameter("signatureSubscribe", &config) {
            std::result::Result::Ok(value) => value,
            std::result::Result::Err(error) => return std::result::Result::Err(error),
        };
        params.push(value);
    }
    return std::result::Result::Ok(params);
}

fn adapt_notification_result<ResultType, NotificationType, Constructor>(
    subscription: u64,
    value: &serde_json::Value,
    constructor: Constructor,
) -> kb_core::Result<NotificationType>
where
    ResultType: serde::de::DeserializeOwned,
    Constructor: FnOnce(u64, ResultType) -> NotificationType,
{
    let result = match serde_json::from_value::<ResultType>(value.clone()) {
        std::result::Result::Ok(result) => result,
        std::result::Result::Err(error) => {
            return std::result::Result::Err(kb_core::Error::json(format!(
                "cannot decode standard WebSocket notification result: {error}"
            )));
        },
    };
    return std::result::Result::Ok(constructor(subscription, result));
}

#[cfg(test)]
mod tests {
    const PUBKEY: &str = "11111111111111111111111111111111";
    const SIGNATURE: &str = "1111111111111111111111111111111111111111111111111111111111111111";

    #[test]
    fn every_standard_request_maps_to_the_compiled_registry() {
        let requests = [
            crate::StandardWsRequest::Account(crate::AccountSubscribeRequest {
                pubkey: PUBKEY.to_string(),
                config: std::option::Option::None,
            }),
            crate::StandardWsRequest::Block(crate::BlockSubscribeRequest {
                filter: crate::WsBlockFilter::All,
                config: std::option::Option::None,
            }),
            crate::StandardWsRequest::Logs(crate::LogsSubscribeRequest {
                filter: crate::WsLogsFilter::All,
                config: std::option::Option::None,
            }),
            crate::StandardWsRequest::Program(crate::ProgramSubscribeRequest {
                program_id: PUBKEY.to_string(),
                config: std::option::Option::None,
            }),
            crate::StandardWsRequest::Root(crate::RootSubscribeRequest),
            crate::StandardWsRequest::Signature(crate::SignatureSubscribeRequest {
                signature: SIGNATURE.to_string(),
                config: std::option::Option::None,
            }),
            crate::StandardWsRequest::Slot(crate::SlotSubscribeRequest),
            crate::StandardWsRequest::SlotsUpdates(crate::SlotsUpdatesSubscribeRequest),
            crate::StandardWsRequest::Vote(crate::VoteSubscribeRequest),
        ];
        let mut methods = std::collections::BTreeSet::new();
        for request in requests {
            assert!(methods.insert(request.subscribe_method()));
            assert_eq!(request.specification().subscribe_method, request.subscribe_method());
        }
        assert_eq!(methods.len(), crate::STANDARD_WS_SUBSCRIPTIONS.len());
    }

    #[test]
    fn stable_request_options_are_independently_serialized() {
        let request = crate::StandardWsRequest::Account(crate::AccountSubscribeRequest {
            pubkey: PUBKEY.to_string(),
            config: std::option::Option::Some(crate::WsAccountSubscribeConfig {
                commitment: std::option::Option::Some(crate::RpcCommitmentLevel::Confirmed),
                encoding: std::option::Option::Some(crate::RpcAccountEncoding::Base64Zstd),
                data_slice: std::option::Option::Some(crate::RpcDataSlice {
                    offset: 8,
                    length: 16,
                }),
            }),
        });
        let params = match request.params(crate::StandardWsCapabilities::default()) {
            std::result::Result::Ok(params) => params,
            std::result::Result::Err(error) => panic!("params failed: {error}"),
        };
        assert_eq!(params[0], serde_json::Value::String(PUBKEY.to_string()));
        assert_eq!(params[1]["commitment"], "confirmed");
        assert_eq!(params[1]["encoding"], "base64+zstd");
        assert_eq!(params[1]["dataSlice"]["offset"], 8);
    }

    #[test]
    fn custom_filter_objects_reject_unknown_fields() {
        let block = serde_json::json!({
            "mentionsAccountOrProgram": PUBKEY,
            "unexpected": true
        });
        assert!(serde_json::from_value::<crate::WsBlockFilter>(block).is_err());
        let logs = serde_json::json!({
            "mentions": [PUBKEY],
            "unexpected": true
        });
        assert!(serde_json::from_value::<crate::WsLogsFilter>(logs).is_err());
    }

    #[test]
    fn logs_mentions_keeps_exact_single_key_shape() {
        let request = crate::StandardWsRequest::Logs(crate::LogsSubscribeRequest {
            filter: crate::WsLogsFilter::Mentions(PUBKEY.to_string()),
            config: std::option::Option::Some(crate::WsLogsSubscribeConfig {
                commitment: std::option::Option::Some(crate::RpcCommitmentLevel::Finalized),
            }),
        });
        let params = match request.params(crate::StandardWsCapabilities::default()) {
            std::result::Result::Ok(params) => params,
            std::result::Result::Err(error) => panic!("params failed: {error}"),
        };
        assert_eq!(params[0]["mentions"][0], PUBKEY);
        assert_eq!(params[1]["commitment"], "finalized");
    }

    #[test]
    fn unstable_requests_require_explicit_capabilities() {
        let requests = [
            crate::StandardWsRequest::Block(crate::BlockSubscribeRequest {
                filter: crate::WsBlockFilter::All,
                config: std::option::Option::None,
            }),
            crate::StandardWsRequest::SlotsUpdates(crate::SlotsUpdatesSubscribeRequest),
            crate::StandardWsRequest::Vote(crate::VoteSubscribeRequest),
        ];
        for request in &requests {
            assert!(request.params(crate::StandardWsCapabilities::default()).is_err());
        }
        let capabilities = crate::StandardWsCapabilities {
            block_subscribe: true,
            slots_updates_subscribe: true,
            vote_subscribe: true,
        };
        for request in &requests {
            assert!(request.params(capabilities).is_ok());
        }
    }

    #[test]
    fn unstable_capabilities_can_be_disabled_after_runtime_rejection() {
        let mut capabilities = crate::StandardWsCapabilities {
            block_subscribe: true,
            slots_updates_subscribe: true,
            vote_subscribe: true,
        };
        assert!(capabilities.disable_method("blockSubscribe"));
        assert!(!capabilities.block_subscribe);
        assert!(!capabilities.disable_method("blockSubscribe"));
        assert!(capabilities.disable_method("slotsUpdatesSubscribe"));
        assert!(capabilities.disable_method("voteSubscribe"));
        assert!(!capabilities.disable_method("slotSubscribe"));
        assert!(crate::StandardWsCapabilities::is_unstable_method("blockSubscribe"));
        assert!(!crate::StandardWsCapabilities::is_unstable_method("slotSubscribe"));
    }

    #[test]
    fn block_processed_commitment_is_rejected() {
        let request = crate::StandardWsRequest::Block(crate::BlockSubscribeRequest {
            filter: crate::WsBlockFilter::All,
            config: std::option::Option::Some(crate::WsBlockSubscribeConfig {
                commitment: std::option::Option::Some(crate::RpcCommitmentLevel::Processed),
                ..crate::WsBlockSubscribeConfig::default()
            }),
        });
        let capabilities = crate::StandardWsCapabilities {
            block_subscribe: true,
            slots_updates_subscribe: false,
            vote_subscribe: false,
        };
        assert!(request.params(capabilities).is_err());
    }

    #[test]
    fn notification_adapter_decodes_each_standard_shape() {
        let account = serde_json::json!({
            "context": { "slot": 1 },
            "value": {
                "lamports": 1,
                "owner": PUBKEY,
                "executable": false,
                "rentEpoch": 2,
                "space": 0,
                "data": ["", "base64"]
            }
        });
        let keyed_account = serde_json::json!({
            "context": { "slot": 1 },
            "value": {
                "pubkey": PUBKEY,
                "account": {
                    "lamports": 1,
                    "owner": PUBKEY,
                    "executable": false,
                    "rentEpoch": 2,
                    "space": 0,
                    "data": ["", "base64"]
                }
            }
        });
        let cases = [
            ("accountNotification", account, "account"),
            (
                "blockNotification",
                serde_json::json!({
                    "context": { "slot": 4 },
                    "value": {
                        "slot": 4,
                        "block": {
                            "blockhash": PUBKEY,
                            "previousBlockhash": PUBKEY,
                            "parentSlot": 3
                        },
                        "err": null
                    }
                }),
                "block",
            ),
            (
                "logsNotification",
                serde_json::json!({
                    "context": { "slot": 5 },
                    "value": { "signature": SIGNATURE, "err": null, "logs": ["Program log"] }
                }),
                "logs",
            ),
            ("programNotification", keyed_account, "program"),
            ("rootNotification", serde_json::Value::from(42_u64), "root"),
            (
                "signatureNotification",
                serde_json::json!({
                    "context": { "slot": 6 },
                    "value": { "err": null }
                }),
                "signature",
            ),
            (
                "slotNotification",
                serde_json::json!({ "slot": 3, "parent": 2, "root": 1 }),
                "slot",
            ),
            (
                "slotsUpdatesNotification",
                serde_json::json!({ "type": "completed", "slot": 3, "timestamp": 4 }),
                "slotsUpdates",
            ),
            (
                "voteNotification",
                serde_json::json!({
                    "votePubkey": PUBKEY,
                    "slots": [1, 2],
                    "hash": PUBKEY,
                    "timestamp": null,
                    "signature": SIGNATURE
                }),
                "vote",
            ),
        ];
        for (method, result, kind) in cases {
            let notification = crate::JsonRpcNotification {
                jsonrpc: "2.0".to_string(),
                method: method.to_string(),
                params: crate::JsonRpcNotificationParams { result, subscription: 7 },
            };
            let adapted = match crate::adapt_standard_ws_notification(&notification) {
                std::result::Result::Ok(adapted) => adapted,
                std::result::Result::Err(error) => panic!("notification failed: {error}"),
            };
            let serialized = match serde_json::to_value(adapted) {
                std::result::Result::Ok(value) => value,
                std::result::Result::Err(error) => panic!("serialization failed: {error}"),
            };
            assert_eq!(serialized["kind"], kind);
        }
    }

    #[test]
    fn signature_received_marker_is_exact() {
        let valid = crate::JsonRpcNotification {
            jsonrpc: "2.0".to_string(),
            method: "signatureNotification".to_string(),
            params: crate::JsonRpcNotificationParams {
                result: serde_json::json!({
                    "context": { "slot": 1 },
                    "value": "receivedSignature"
                }),
                subscription: 9,
            },
        };
        assert!(crate::adapt_standard_ws_notification(&valid).is_ok());
        let mut invalid = valid;
        invalid.params.result["value"] = serde_json::Value::String("received".to_string());
        assert!(crate::adapt_standard_ws_notification(&invalid).is_err());
    }
}