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// Copyright 2019-2024 ChainSafe Systems
// SPDX-License-Identifier: Apache-2.0, MIT
//! A transcription of types from the [`JSON-RPC 2.0` Specification](https://www.jsonrpc.org/specification).
//!
//! > When quoted, the specification will appear as block-quoted text, like so.

use serde::{Deserialize, Serialize};
use serde_json::{Map, Value};

/// > If present, parameters for the RPC call MUST be provided as a Structured value.
/// > Either by-position through an Array or by-name through an Object.
#[derive(Serialize, Deserialize, Debug, Clone, PartialEq, Eq)]
#[serde(
    untagged,
    expecting = "An Array of positional parameters, or a Map of named parameters"
)]
pub enum RequestParameters {
    /// > params MUST be an Array, containing the values in the Server expected order.
    ByPosition(Vec<Value>),
    /// > params MUST be an Object, with member names that match the Server
    /// > expected parameter names.
    /// > The absence of expected names MAY result in an error being generated.
    /// > The names MUST match exactly, including case, to the method's expected parameters.
    ByName(Map<String, Value>),
}

impl RequestParameters {
    #[allow(dead_code)]
    pub fn len(&self) -> usize {
        match self {
            RequestParameters::ByPosition(it) => it.len(),
            RequestParameters::ByName(it) => it.len(),
        }
    }
    pub fn is_empty(&self) -> bool {
        match self {
            RequestParameters::ByPosition(it) => it.is_empty(),
            RequestParameters::ByName(it) => it.is_empty(),
        }
    }
}