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use fuel_core_storage::MerkleRoot;
use fuel_core_types::{
    blockchain::consensus::Genesis,
    fuel_crypto::Hasher,
};

// TODO: Replace `anyhow` with own `Error` related to genesis.

pub trait GenesisCommitment {
    /// Calculates the merkle root of the state of the entity.
    fn root(&self) -> anyhow::Result<MerkleRoot>;
}

impl GenesisCommitment for Genesis {
    fn root(&self) -> anyhow::Result<MerkleRoot> {
        let genesis_hash = *Hasher::default()
            .chain(self.chain_config_hash)
            .chain(self.coins_root)
            .chain(self.contracts_root)
            .chain(self.messages_root)
            .finalize();

        Ok(genesis_hash)
    }
}