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use candid::CandidType;
use num_bigint::BigUint;
use serde::{Deserialize, Serialize};

use crate::impl_from_uint_for_enum;

/// Registered coin types for BIP-0044
///   https://github.com/satoshilabs/slips/blob/master/slip-0044.md
#[derive(
    Clone, CandidType, Hash, Debug, Ord, PartialOrd, Eq, PartialEq, Deserialize, Serialize,
)]
pub enum Chain {
    Dfinity = 223,
    BinanceSmartChain = 714,
    Bitcoin = 0,
    Ethereum = 60,
    EX3Layer2 = 87653426,
}

impl From<BigUint> for Chain {
    fn from(chain_id: BigUint) -> Self {
        match chain_id {
            chain_id if chain_id == Chain::Dfinity.into() => Chain::Dfinity,
            chain_id if chain_id == Chain::BinanceSmartChain.into() => Chain::BinanceSmartChain,
            chain_id if chain_id == Chain::Bitcoin.into() => Chain::Bitcoin,
            chain_id if chain_id == Chain::Ethereum.into() => Chain::Ethereum,
            chain_id if chain_id == Chain::EX3Layer2.into() => Chain::EX3Layer2,
            _ => panic!("unknown chain id"),
        }
    }
}

impl Into<BigUint> for Chain {
    fn into(self) -> BigUint {
        BigUint::from(self as u128)
    }
}

impl_from_uint_for_enum!(Chain, u8, u16, u32, u64, u128);