//! Chain specification for the Optimism Mainnet network.

use alloc::sync::Arc;

use alloy_chains::Chain;
use alloy_primitives::{b256, U256};
use once_cell::sync::Lazy;
use reth_chainspec::{once_cell_set, BaseFeeParams, BaseFeeParamsKind, ChainSpec};
use reth_ethereum_forks::EthereumHardfork;
use reth_optimism_forks::OptimismHardfork;
use reth_primitives_traits::constants::ETHEREUM_BLOCK_GAS_LIMIT;

use crate::OpChainSpec;

/// The Optimism Mainnet spec
pub static OP_MAINNET: Lazy<Arc<OpChainSpec>> = Lazy::new(|| {
    OpChainSpec {
        inner: ChainSpec {
            chain: Chain::optimism_mainnet(),
            // genesis contains empty alloc field because state at first bedrock block is imported
            // manually from trusted source
            genesis: serde_json::from_str(include_str!("../res/genesis/optimism.json"))
                .expect("Can't deserialize Optimism Mainnet genesis json"),
            genesis_hash: once_cell_set(b256!(
                "7ca38a1916c42007829c55e69d3e9a73265554b586a499015373241b8a3fa48b"
            )),
            paris_block_and_final_difficulty: Some((0, U256::from(0))),
            hardforks: OptimismHardfork::op_mainnet(),
            base_fee_params: BaseFeeParamsKind::Variable(
                vec![
                    (EthereumHardfork::London.boxed(), BaseFeeParams::optimism()),
                    (OptimismHardfork::Canyon.boxed(), BaseFeeParams::optimism_canyon()),
                ]
                .into(),
            ),
            max_gas_limit: ETHEREUM_BLOCK_GAS_LIMIT,
            prune_delete_limit: 10000,
            ..Default::default()
        },
    }
    .into()
});