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/* This file is part of DarkFi (https://dark.fi)
 *
 * Copyright (C) 2020-2025 Dyne.org foundation
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
 */

use darkfi_sdk::{crypto::pasta_prelude::PrimeField, error::ContractError, pasta::pallas};
use darkfi_serial::{SerialDecodable, SerialEncodable};

#[cfg(feature = "client")]
use darkfi_serial::async_trait;

/// The `Nullifier` is represented as a base field element.
#[repr(C)]
#[derive(Debug, Clone, Copy, Eq, PartialEq, SerialEncodable, SerialDecodable)]
pub struct Nullifier(pallas::Base);

impl Nullifier {
    /// Reference the raw inner base field element
    pub fn inner(&self) -> pallas::Base {
        self.0
    }

    /// Create a `Nullifier` object from given bytes
    pub fn from_bytes(x: [u8; 32]) -> Result<Self, ContractError> {
        match pallas::Base::from_repr(x).into() {
            Some(v) => Ok(Self(v)),
            None => Err(ContractError::IoError("Noncanonical bytes for Nullifier".to_string())),
        }
    }

    /// Convert the `Nullifier` type into 32 raw bytes
    pub fn to_bytes(&self) -> [u8; 32] {
        self.0.to_repr()
    }
}

use core::str::FromStr;
darkfi_sdk::fp_from_bs58!(Nullifier);
darkfi_sdk::fp_to_bs58!(Nullifier);
darkfi_sdk::ty_from_fp!(Nullifier);