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use serde_derive::{Deserialize, Serialize};

pub const JSONRPC_VERSION: &str = "2.0";

/// A JSONRPC error object
#[derive(Clone, Debug, PartialEq, Deserialize, Serialize)]
#[serde(deny_unknown_fields)]
pub struct JsonrpcError {
    /// The integer identifier of the error
    pub code: i32,
    /// A string describing the error
    pub message: String,
    /// Additional data specific to the error
    #[serde(skip_serializing_if = "Option::is_none")]
    pub data: Option<serde_json::Value>,
}

/// A JSONRPC request object
#[derive(Serialize, Deserialize, Debug, Clone)]
#[serde(deny_unknown_fields)]
pub struct JsonrpcRequest {
    /// jsonrpc field, MUST be "2.0"
    pub jsonrpc: String,
    /// Identifier for this Request, which should appear in the response
    pub id: serde_json::Value,
    /// The name of the RPC call
    pub method: String,
    /// Parameters to the RPC call
    pub params: Vec<serde_json::Value>,
}

/// A JSONRPC response object
#[derive(Serialize, Deserialize, Debug, Clone)]
#[serde(deny_unknown_fields)]
pub struct JsonrpcResponse {
    /// jsonrpc field, MUST be "2.0"
    pub jsonrpc: String,
    /// Identifier for this Request, which should match that of the request
    pub id: serde_json::Value,
    /// A result if there is one, or null
    #[serde(skip_serializing_if = "Option::is_none")]
    pub result: Option<serde_json::Value>,
    /// An error if there is one, or null
    #[serde(skip_serializing_if = "Option::is_none")]
    pub error: Option<JsonrpcError>,
}