//! Ghost chain configuration.

use codec::Encode;

use ghost_slow_clap::sr25519::AuthorityId as SlowClapId;
use primitives::{AccountId, AccountPublic};
use authority_discovery_primitives::AuthorityId as AuthorityDiscoveryId;
use grandpa_primitives::AuthorityId as GrandpaId;
use babe_primitives::AuthorityId as BabeId;
#[cfg(feature = "casper-native")]
use pallet_staking::Forcing;

#[cfg(feature = "casper-native")]
use casper_runtime as casper;
#[cfg(feature = "casper-native")]
use casper_runtime_constants::currency::CSPR;
use sc_chain_spec::ChainSpecExtension;
#[cfg(feature = "casper-native")]
use sc_chain_spec::ChainType;
use serde::{Deserialize, Serialize};
use sp_core::{sr25519, Pair, Public};
use sp_runtime::traits::IdentifyAccount;
#[cfg(feature = "casper-native")]
use sp_runtime::Perbill;
#[cfg(feature = "casper-native")]
use telemetry::TelemetryEndpoints;

#[cfg(feature = "casper-native")]
const CASPER_TELEMETRY_URL: &str = "wss://telemetry.ghostchain.io/submit/";

#[cfg(feature = "casper-native")]
const DEFAULT_PROTOCOL_ID: &str = "cspr";

/// Node `ChainSpec` extensions.
///
/// Additional parameters for some substrate core modules,
/// customizable from the chain spec.
#[derive(Default, Clone, Serialize, Deserialize, ChainSpecExtension)]
#[serde(rename_all = "camelCase")]
pub struct Extensions {
    /// Block number with known hashes.
    pub fork_blocks: sc_client_api::ForkBlocks<primitives::Block>,
    /// Known bad block hashes.
    pub bad_blocks: sc_client_api::BadBlocks<primitives::Block>,
    /// The light sync state.
    /// This value will be set by the `sync-state rpc` implementation.
    pub light_sync_state: sc_sync_state_rpc::LightSyncStateExtension,
}

// Generic chain spec, in case when we don't have the native runtime.
pub type GenericChainSpec = sc_service::GenericChainSpec<(), Extensions>;

/// The `ChainSpec` parametrized for the ghost runtime.
#[cfg(feature = "casper-native")]
pub type CasperChainSpec = sc_service::GenericChainSpec<(), Extensions>;

#[cfg(not(feature = "casper-native"))]
pub type CasperChainSpec = GenericChainSpec;

pub fn casper_config() -> Result<CasperChainSpec, String> {
   CasperChainSpec::from_json_bytes(&include_bytes!("../chain-specs/casper.json")[..])
}

#[cfg(feature = "casper-native")]
fn casper_session_keys(
    babe: BabeId,
    grandpa: GrandpaId,
    authority_discovery: AuthorityDiscoveryId,
    slow_clap: SlowClapId,
) -> casper::opaque::SessionKeys {
    casper::opaque::SessionKeys {
        babe,
        grandpa,
        authority_discovery,
        slow_clap,
    }
}


pub fn casper_chain_spec_properties() -> serde_json::map::Map<String, serde_json::Value> {
    serde_json::json!({
        "ss58Format": 1996,
        "tokenDecimals": 18,
        "tokenSymbol": "CSPR",
    })
    .as_object()
    .expect("Map given; qed")
    .clone()
}

/// Helper function to generate a crypto pair from seed.
pub fn get_from_seed<TPublic: Public>(seed: &str) -> <TPublic::Pair as Pair>::Public {
    TPublic::Pair::from_string(&format!("//{}", seed), None)
        .expect("static values are valid; qed")
        .public()
}

/// Helper function to generate account ID from seed.
pub fn get_account_id_from_seed<TPublic: Public>(seed: &str) -> AccountId
where
    AccountPublic: From<<TPublic::Pair as Pair>::Public>,
{
    AccountPublic::from(get_from_seed::<TPublic>(seed)).into_account()
}

/// Helper function to generate stash, controller and session key from seed
pub fn generate_authority_keys_from_seed(
    seed: &str,
) -> (
    AccountId,
    AccountId,
    BabeId,
    GrandpaId,
    AuthorityDiscoveryId,
    SlowClapId,
) {
    let keys = get_authority_keys_from_seed(seed);
    (keys.0, keys.1, keys.2, keys.3, keys.4, keys.5)
}

/// Helper function to generate stash, controller and session key from seed
pub fn get_authority_keys_from_seed(
    seed: &str,
) -> (
    AccountId,
    AccountId,
    BabeId,
    GrandpaId,
    AuthorityDiscoveryId,
    SlowClapId,
) {
    (
        get_account_id_from_seed::<sr25519::Public>(&format!("{}//stash", seed)),
        get_account_id_from_seed::<sr25519::Public>(seed),
        get_from_seed::<BabeId>(seed),
        get_from_seed::<GrandpaId>(seed),
        get_from_seed::<AuthorityDiscoveryId>(seed),
        get_from_seed::<SlowClapId>(seed),
    )
}

#[cfg(feature = "casper-native")]
fn casper_testnet_accounts() -> Vec<AccountId> {
    vec![
        get_account_id_from_seed::<sr25519::Public>("Alice"),
        get_account_id_from_seed::<sr25519::Public>("Bob"),
        get_account_id_from_seed::<sr25519::Public>("Charlie"),
        get_account_id_from_seed::<sr25519::Public>("Dave"),
        get_account_id_from_seed::<sr25519::Public>("Eve"),
        get_account_id_from_seed::<sr25519::Public>("Feride"),
        get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
        get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
        get_account_id_from_seed::<sr25519::Public>("Charlie//stash"),
        get_account_id_from_seed::<sr25519::Public>("Dave//stash"),
        get_account_id_from_seed::<sr25519::Public>("Eve//stash"),
        get_account_id_from_seed::<sr25519::Public>("Feride//stash"),
    ]
}

#[cfg(feature = "casper-native")]
fn casper_testnet_evm_accounts() -> Vec<(AccountId, u128, u8)> {
    vec![
        // 01c928771aea942a1e7ac06adf2b73dfbc9a25d9eaa516e3673116af7f345198
        (get_account_id_from_seed::<sr25519::Public>("1A69d2D5568D1878023EeB121a73d33B9116A760"), 1337 * CSPR, 1), 
        // b19a435901872f817185f7234a1484eae837613f9d10cf21927a23c2d8cb9139
        (get_account_id_from_seed::<sr25519::Public>("2f86cfBED3fbc1eCf2989B9aE5fc019a837A9C12"), 1337 * CSPR, 2), 
        // d3baf57b74d65719b2dc33f5a464176022d0cc5edbca002234229f3e733875fc
        (get_account_id_from_seed::<sr25519::Public>("e83f67361Ac74D42A48E2DAfb6706eb047D8218D"), 69   * CSPR, 3), 
        // c4683d566436af6b58b4a59c8f501319226e85b21869bf93d5eeb4596d4791d4
        (get_account_id_from_seed::<sr25519::Public>("827ee4ad9b259b6fa1390ed60921508c78befd63"), 69   * CSPR, 4), 
    ]
}

#[cfg(feature = "casper-native")]
fn casper_testnet_evm_networks() -> Vec<(u32, Vec<u8>)> {
    vec![
        (1, ghost_networks::NetworkData { 
            chain_name: "ethereum-mainnet".into(), 
            default_endpoint: "https://nd-422-757-666.p2pify.com/0a9d79d93fb2f4a4b1e04695da2b77a7/".into(),
            finality_delay: Some(40u64),
            release_delay: Some(80u64),
            network_type: ghost_networks::NetworkType::Evm,
            gatekeeper: "0x4d224452801aced8b2f0aebe155379bb5d594381".into(),
            topic_name: "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef".into(),
            incoming_fee: 0u32,
            outgoing_fee: 0u32,
        }.encode()),
        (56, ghost_networks::NetworkData { 
            chain_name: "bnb-mainnet".into(), 
            default_endpoint: "https://bsc-mainnet.core.chainstack.com/35848e183f3e3303c8cfeacbea831cab/".into(),
            finality_delay: Some(20u64),
            release_delay: Some(40u64),
            network_type: ghost_networks::NetworkType::Evm,
            gatekeeper: "0x0E09FaBB73Bd3Ade0a17ECC321fD13a19e81cE82".into(),
            topic_name: "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef".into(),
            incoming_fee: 0u32,
            outgoing_fee: 0u32,
        }.encode())
    ]
}

/// Helper function to create casper `GenesisConfig` for testing
#[cfg(feature = "casper-native")]
pub fn testnet_config_genesis(
    initial_authorities: Vec<(
        AccountId,
        AccountId,
        BabeId,
        GrandpaId,
        AuthorityDiscoveryId,
        SlowClapId,
    )>,
    endowed_accounts: Option<Vec<AccountId>>,
    ghost_accounts: Option<Vec<(AccountId, u128, u8)>>,
    evm_networks: Option<Vec<(u32, Vec<u8>)>>,
) -> serde_json::Value {
    let endowed_accounts: Vec<AccountId> = endowed_accounts
        .unwrap_or_else(casper_testnet_accounts);

    let ghost_accounts: Vec<(AccountId, u128, u8)> = ghost_accounts
        .unwrap_or_default();

    let evm_networks: Vec<(u32, Vec<u8>)> = evm_networks
        .unwrap_or_default();

    const ENDOWMENT: u128 = 1_000 * CSPR;
    const STASH: u128 = 500 * CSPR;

    serde_json::json!({
        "balances": {
            "balances": endowed_accounts
                .iter()
                .map(|k| (k.clone(), ENDOWMENT))
                .chain(ghost_accounts
                    .iter()
                    .map(|k| (k.0.clone(), k.1.clone())))
                .collect::<Vec<_>>(),
        },
        "session": {
            "keys": initial_authorities
                .iter()
                .map(|x| {
                    (
                        x.0.clone(),
                        x.0.clone(),
                        casper_session_keys(
                            x.2.clone(),
                            x.3.clone(),
                            x.4.clone(),
                            x.5.clone(),
                        ),
                    )
                })
                .collect::<Vec<_>>(),
        },
        "staking": {
            "validatorCount": initial_authorities.len() as u32,
            "minimumValidatorCount": 1,
            "invulnerables": initial_authorities
                .iter()
                .map(|x| x.0.clone())
                .collect::<Vec<_>>(),
            "forceEra": Forcing::NotForcing,
            "slashRewardFraction": Perbill::from_percent(10),
            "stakers": initial_authorities
                .iter()
                .map(|x| (x.0.clone(), x.0.clone(), STASH, casper::StakerStatus::<AccountId>::Validator))
                .collect::<Vec<_>>(),
        },
        "babe": {
            "epochConfig": Some(casper::BABE_GENESIS_EPOCH_CONFIG),
        },
        "ghostNetworks": {
            "networks": evm_networks,
        },
        "ghostClaims": {
            "total": ghost_accounts.iter().fold(0, |acc, k| acc + k.1),
            "membersAndRanks": ghost_accounts
                .iter()
                .map(|k| (k.0.clone(), k.2.clone()))
                .collect::<Vec<_>>(),
        },
    })
}

#[cfg(feature = "casper-native")]
fn casper_staging_config_genesis() -> serde_json::Value {
    use hex_literal::hex;
    use sp_core::crypto::UncheckedInto;

    // Following keys are used in genesis config for testing (casper) chains.
    // DO NOT use them in production chains such as ghost.
    let endowed_accounts = vec![
        // sfErNwRgZ6ypB7wY8M2smXMZjxqUkc2TgUcNvC1JNQJFXS8bw
        hex!["328d3b7c3046ef7700937d99fb2e98ce2591682c2b5dcf3f562e4da157650237"].into(),
        // sfEwRjyvEQcpRQ1qbCZum27nEkTggKEt7DtqxwyYQULt9UuUN
        hex!["3666e4e19f87bb8680495f31864ce1f1c69d4178002cc01911aef2cc7313f203"].into(),
        // sfHcJxw5cgkvukZZyxcNUMCdbm9e7773orByLrGgAREka81TK
        hex!["ac871e8bab00dd56ba3a1c0bd289357203dcaf10010b0b04ad7472870cd22a3c"].into(),
        // sfFD7KSRi2aSREJWc9X75sVTN4a5pbPM5VSSJefmPvMuiVbPr
        hex!["425ccd7bda4f5c76788ba23bc0381d7a2e496179c93301208c57501c80a4232a"].into(),
        // sfH29zyFYtoFj6fSXskAEXG5XyyMCa5YycahJkYMwSUz8CcEU
        hex!["927a98dcf8f721103005f168476c24b91d7d10d580f457006a908e10e62c7729"].into(),
        // sfHcRoUmrL8GDmWxUcPcZEWVfJbnaXyjWuaBxu5pNtdW5nERK
        hex!["ac9e227e30a63ce6eeb55cfbb1fb832aa7e1d3fad2bcb3f663de4a91d744fd50"].into(),
        // sfFrKAXZiRGQwdkPFCxQwoHHByyfJ2BSRxbhrHWu2iWtSSRLc
        hex!["5ebcc2d213e482d00e2a27e2031abda6ecbe49eb30709113c6142aa4d7395134"].into(),
        // sfK147dy2NapxEKwrTLLxTkmhw15kkoJeEKrg77oLFRmUQZDb
        hex!["ea1c01ff56725c6fdd62efaa119b704a2f467fd21d20a3c2117668bfeba02e76"].into(),
        // sfFJuDxqSc3skWaNUQgqmtCDYvcRj9c56urEky7ByD26aXQEW
        hex!["46c78fcacffd80abc9cca4917ef8369a37e21a1691ca11e7a3b53f80be745313"].into(),
        // sfHZx1bZK6aoJKfQ1XQfpRD5VZBXZM1uREGcBsnKJdTZDnDod
        hex!["aaba173e1cd257c1ba67afbed0fbf2c4aadbfac329f129f12c4941b8b6bc5865"].into(),
        // sfKNNbANdBuBpA4n1sXwPBhV57HBgV2y3R3YjHz1S1uWKfKAy
        hex!["fa5e5a295ec74c3dda81118d9240db1552b28f831838465ae0712e97e78a6728"].into(),
        // sfFAdZQQVdbCTA7eWomTrJXe5L8ZcwZRfkyyRkMQZftDqbcMg
        hex!["4078ddb1ba1388f768fe6aa40ba9124a72692ecbcc83dc088fa86c735e4dc128"].into(),
        // sfFqT8fmF15Ddshio5rnucmqzMxtUoHZVh7qSALSdAaM7Y6zb
        hex!["5e1456904c40192cd3a18183df7dffea90d97739830a902cabb702ecdae4f649"].into(),
        // sfKQWvvmmfA5XhG1kW8n2NhiWq5kdhkBHfMYAW8q5AAZQDZaU
        hex!["fc00ebab85e7271d8436b9258a4b80700f655810af632b3647109965f8b8e639"].into(),
        // sfFY22WVfsMgacucLQjo1R9xhGMKQYsUR3PFC5ivpYNj4FF6K
        hex!["50c8a6b85ae6c3aebf402dbc98f0f09dad4758d37d63f3e39e4d9127eece9360"].into(),
        // sfGcgSC4TUxSH9u9nRCqFaU7BbcC4KyLzu7BXMDPj9nRJqFby
        hex!["80932904b805be74fa163be7474390633c96f319163f7466adf9844e9b4fa038"].into(),
        // sfGCg772bqKp3wH23EQbgSbCQ5Q8BCwmCJ39XjR3xLwq6foYD
        hex!["6e4429a8fa85cfe2a60488af446d57e719207831b2579b937325645e110bb666"].into(),
        // sfF3MrSoVfkRYA3UUhHkUGKAEWkZfnZytxHXECGPQbuKZw5kS
        hex!["3aed46c45d1db596ba68c171f58cd0c34178c410ec2485dc9ecaa52f1af75320"].into(),
        // sfJndDZAky34KUbpr94BrMnaJ6Df7EJQB9fSicrEVU1FDtAaA
        hex!["e0a13fb6efe591216ca3f2c5a495b9653a5255d0344b17cf02584c40b5b57043"].into(),
    ];

    let initial_authorities: Vec<(
        AccountId,
        AccountId,
        BabeId,
        GrandpaId,
        AuthorityDiscoveryId,
        SlowClapId,
    )> = vec![
        (
            // sfFXZmnDVnkQ781J2gbqUpi7K5KgMWMdM4eeii74xxGgKYnNN
            hex!["507045c82be367f95408466cd054ca39bfa52697a3ef22809af14cf9de304f02"].into(),
            // sfFXZmnDVnkQ781J2gbqUpi7K5KgMWMdM4eeii74xxGgKYnNN
            hex!["507045c82be367f95408466cd054ca39bfa52697a3ef22809af14cf9de304f02"].into(),
            // sfJeojACBa7WiH6tBwikBKAMU2oKmseEBD1GYUYATvfWuLcPa
            hex!["daaaaab6a6e574099e24ae9bb75b543610edef9d374fa85a378edb573b47615f"].unchecked_into(),
            // sfFdtzNxJdeEkgHxvk144rJKxf7wcYvgX5tqfgZRutW9YvAKE
            hex!["55446f9a7aa99ced06b317c80ce90d56b84e56526775683af2525969e8da0b64"].unchecked_into(),
            // sfE8gsMYAjAJHk5gyYZN7AW6pfmJ7V9H7xxWto24nmhzCUXaQ
            hex!["12c14850562021eb99f58f90ab624fb6cfaf3ac9228a92f8b60115fe6a6af15a"].unchecked_into(),
            // sfE3GKSrKZzrZpdapJ2VGRpPor45T4D4i8QBZNumSNGqGv7PX
            hex!["0e9e698c7b2bf5ce3861cb4bc4ddf9e200237c282025b093ada850d764d12a35"].unchecked_into(),
        ),
        (
            // sfHLqWNC4hMKHhwvPWmWcxZsDPhCTQKgh1Ap7pm3qML5GBTBa
            hex!["a0ba0196e6ee7e6b5b0553035c5cb5c04e9725001b5732839d0529cbc00c9600"].into(),
            // sfHLqWNC4hMKHhwvPWmWcxZsDPhCTQKgh1Ap7pm3qML5GBTBa
            hex!["a0ba0196e6ee7e6b5b0553035c5cb5c04e9725001b5732839d0529cbc00c9600"].into(),
            // sfGA6tPPF8dAc8QpMCMjxitG3j8sXPhkdpm5bwz4UsXAApUiw
            hex!["6c4dd88b43e2011cf9a6a73d53446336ac9e04cdd4ca23587df63187ac455e49"].unchecked_into(),
            // sfGxQZXFUQH1AXv82rpjiJHFs7YsdEuVGdyvKiS2Tajpvw6Se
            hex!["8f9ea20bf4a807a8e710f7559dece86e94672b5b361de157bdaa5c1f37849f8d"].unchecked_into(),
            // sfGz2enFUR22cQ5ey61MdtPqbCeEWZA1wsCFFSLGaK7vKnv8C
            hex!["90db5ed339a559ed157995a48d781f44c7df972dfba4bc855e4b59fa46438e17"].unchecked_into(),
            // sfEtwe5BoroNjkdLsvnjnMemUKiw8MS1X4YW8bepbbGvhS4LZ
            hex!["3481cdcbcf37a4669c29a78cf9ceb39383a10ef0a18b36b92d149fdd0c24ae00"].unchecked_into(),
        ),
        (
            // sfGq75CrCrkcfqNzyyidu3D4jW3AoJSzL5tKKuv1UbS16ezzy
            hex!["8a0d0b66e827bf20e79f9a499317e73925ce4f422371067edfab690e43857f13"].into(),
            // sfGq75CrCrkcfqNzyyidu3D4jW3AoJSzL5tKKuv1UbS16ezzy
            hex!["8a0d0b66e827bf20e79f9a499317e73925ce4f422371067edfab690e43857f13"].into(),
            // sfJo2ogBpssRAU9ZPTvuXFZEdmJw9pKsPydLjXe8DypRScjzT
            hex!["e0f0a776ecc9fa5e1f22e2fa001fe3fba5aea52b9444bc894b45589d42132475"].unchecked_into(),
            // sfHq3EVT1sqY7o5ki3zA6LEdRDfdFc29YaZN3w2Thhz6JD5ZF
            hex!["b63c5a0cf342b9b04931bc8ed74d7d0165ab99ab5f8a4514797d4b299a4501fe"].unchecked_into(),
            // sfEj3wrDy9EDLCAodyEdQEYxJpNnM8Etaj3RJ5bCBRzdaDced
            hex!["2cf69452e9f2a8457119139408884941ed50f590c0fc0f2b044c4d82c69e4245"].unchecked_into(),
            // sfE32RmBp1xX4KRTphVGLUJBxLGPN3Dzg9BwCJktxMf3iEwck
            hex!["0e6fa6934f9e99fa84874f2ed9318825a0d5443a0ced984acfbd24ece72ba55e"].unchecked_into(),
        ),
        (
            // sfG9iWUS7AKBzvqdz3uDZv7f1t79vvSTYL1VxzYPHjhmLnQVn
            hex!["6c0283f4c688f0e75ad546c790bbd5961c1a6931543aa589f368f8272c44b758"].into(),
            // sfG9iWUS7AKBzvqdz3uDZv7f1t79vvSTYL1VxzYPHjhmLnQVn
            hex!["6c0283f4c688f0e75ad546c790bbd5961c1a6931543aa589f368f8272c44b758"].into(),
            // sfGMUYXSjHgwGBpbGiHFoqT1DdJwZdHk49H5ViaQM7HUnayvZ
            hex!["74fa7381a7a74b316afb6793a00387eed9d95d46a69866cbb316b5d9c918af0e"].unchecked_into(),
            // sfEWYhczV6PbmeNXZTcA4LvhpzvCfNMatYoSNKvDphmNaQzqB
            hex!["236d2fa03f4ed8cb65de7e514d7540159b328f1c170dd402b094ad7fbf547218"].unchecked_into(),
            // sfDirg32ityDvrjxh4822unhP4qm4S9yTqN99gesN322swn7h
            hex!["00946618c353e4c6546b87f9ca1089b846b0ea4658ee8e6d9d1200c24cb5ee27"].unchecked_into(),
            // sfFZgp1Z5diFAZ16swuQD5GojGCsMMFVR19uWnCrppMLuYjRv
            hex!["520e74f8c5853ec8577932327ad3247656db25b74c79ad09adb431b271002401"].unchecked_into(),
        ),
        (
            // sfHjtrXFzRmxwjE4rjVxFJXpvVv7furjdymZS7PQRFiANpodz
            hex!["b24feb55b2cac4b365a9245c2a97525b01bd1a594d2d42b91f6bc38c9c2e6517"].into(),
            // sfHjtrXFzRmxwjE4rjVxFJXpvVv7furjdymZS7PQRFiANpodz
            hex!["b24feb55b2cac4b365a9245c2a97525b01bd1a594d2d42b91f6bc38c9c2e6517"].into(),
            // sfF5XWwvNPjZEsBz1HWs5Ys5zcE85UHnN1BV8TBBectqFQZRm
            hex!["3c944c704cae203619b9e7a5a4b6742736da6a8e76c762291bebdc7652cfec2f"].unchecked_into(),
            // sfDx3gj4wFHg3cK6bopnypHQ6TxW1VgyPsYVbXKhRHtLDLxQb
            hex!["0aa3a88f6b777c95c3dfe7e997b76798413f16aa325f34824cae0c9102b281d5"].unchecked_into(),
            // sfHXZbnZV3YWwnH28q2xumm7stvuC8LweYYxPNuHGonnX7QHL
            hex!["a8e828d10cf7b74481b6e746e5532d4740ea8014a0d3d856540a59847f8a6b76"].unchecked_into(),
            // sfEaHBrBgeMhRTA3WHE9Nbyvn3h7xkhYKi7go4yo81L88o9zJ
            hex!["2645f1f6820dd3a917eebbdab033088d8862477c1c14759b218685f9a0893377"].unchecked_into(),
        ),
        (
            // sfFFYKBEwmJAQEJR73Q4Gfs1sH1c8wyuBGnHc1UdzWucAYrKC
            hex!["44376f8fa786be1f16fcb45232cfb07300cea845b2fc6e30dde61952de3e5e33"].into(),
            // sfFFYKBEwmJAQEJR73Q4Gfs1sH1c8wyuBGnHc1UdzWucAYrKC
            hex!["44376f8fa786be1f16fcb45232cfb07300cea845b2fc6e30dde61952de3e5e33"].into(),
            // sfK4K5bS7M6bHeKHoGec9bw1PMngNyzhTx9YZq6hkqibos4LJ
            hex!["ec981eb1ef1ddbc8ded2db16198cb03667b4b39a8ea58f28ad469ddfaf256161"].unchecked_into(),
            // sfECakKMW2xf5dK8Ut55tnwadoKTNGKdRLh5E7dYRmV6sW812
            hex!["15b9a867891cf449584b108e512d60b945b1a065bec1703c4c5709ee5093c03d"].unchecked_into(),
            // sfErEin4Ljy11VGnYtTYJZ9LLcDP4fvsKV6f9LXYRwRXtrNqa
            hex!["3271915dc67eba8ad2759a30c2537702f4fbf45647cba565e3a464ab75b91f05"].unchecked_into(),
            // sfGD5sHSa1h8NGpUD29ZogBJW6fatg8Sg6Pzg9Q7RPUm24Mkr
            hex!["6e9426dc78fba9eeb264dcab98be86daf3d8cf510ecfb2acddec370295ff8176"].unchecked_into(),
        ),
        (
            // sfFDm27vLp5MfzFesBjBMXfn9ivDaU3Efo8C4RRDaMJLLZDHU
            hex!["42dbb785808c7b22eb3a57605b4676e370620c79d768a9e8f1f93ad3137b751c"].into(),
            // sfFDm27vLp5MfzFesBjBMXfn9ivDaU3Efo8C4RRDaMJLLZDHU
            hex!["42dbb785808c7b22eb3a57605b4676e370620c79d768a9e8f1f93ad3137b751c"].into(),
            // sfFfq7emYFfuj9Umsfv4aCQEh8m4YCBTipJy1FjifP1LKMECx
            hex!["56bde237ae958813482ec69ac5734f64c271c7c5b3d1af45daa4d4d43c051e34"].unchecked_into(),
            // sfDnULT2dp57TorsvTcFi8vycL8kse4mj6PRqbgxo3wCyq3uo
            hex!["03562f5fa0b39c4f85b8692be4aa2447203b8ba5a95f9ba3d1e43d52ba8d1254"].unchecked_into(),
            // sfJq9YSgp5JLBFmTrbCkbmNRMNyrDy8mDi1G2U8qQ624Feqfn
            hex!["e28dd330cc0daee36806b6b9209547fd65a6916f6e3cc3c2647417ff67bcb065"].unchecked_into(),
            // sfFrewaiCSrgjbB51j5NzFBwXkDJkhsRGntNSnm7Cz4WVNuDx
            hex!["5eff55ed5111e7430d0acb23aee45e04d389f4d3f72019cda302bb2176485578"].unchecked_into(),
        ),
        (
            // sfGyhSTwQwUws1Mx4fDi3YEbUWExZqikVjTmUg5wYd9QFNc3B
            hex!["909ab2271d3fc8df9e8556232a29eea7cf1cfdf8c89603a602779daa6484f011"].into(),
            // sfGyhSTwQwUws1Mx4fDi3YEbUWExZqikVjTmUg5wYd9QFNc3B
            hex!["909ab2271d3fc8df9e8556232a29eea7cf1cfdf8c89603a602779daa6484f011"].into(),
            // sfDibmxyPyY1NqTSydacHccTh3szcVbDF8oWnGGwgRDUTja5x
            hex!["00623f9d2ca673af3ec6d5c0077a7314c0fa92ec5fa853015b189daa12a2e02a"].unchecked_into(),
            // sfFL5NRVWDYKxPzs2dGLkVoPWRuff5RBWNLKp7o1VKVWSj6Qv
            hex!["47acf609aefff57c8b3680d862df19f11a9d5970e0e9be3606781f430790e94c"].unchecked_into(),
            // sfE3gRb8ATGq6zMJfeDeyUEbNDguxXjb5rtHR66BZMVxkjQvu
            hex!["0eef8f5d5d3bf5b5986bdd76ee6feba013171ab6c76bd38b3aa556e7fad4ea6c"].unchecked_into(),
            // sfHJXaNTacrJtuTqpyykfRigKbvWsCqjVCVN6D4m2rtNHzPPM
            hex!["9ef7278866ed6015bd3055e3ef2cc77c62e796667f250a42d832846534a16743"].unchecked_into(),
        ),
        (
            // sfFPZZNrhDuY9MKJCBHyBCkgJecgDqPJBPSjA37be4czdX6t3
            hex!["4a5596e97c602e7846d54fae81dcdc5a553b7422231e32f9567ac30a6b7c743a"].into(),
            // sfFPZZNrhDuY9MKJCBHyBCkgJecgDqPJBPSjA37be4czdX6t3
            hex!["4a5596e97c602e7846d54fae81dcdc5a553b7422231e32f9567ac30a6b7c743a"].into(),
            // sfJP8aW6eSUs14AfUG6ZDFFjtyJxDed5Ubk1CFh7dNmL69rbx
            hex!["ceb63298b1b7a1277fddf6eee735dbbf9921fd5ebaac0132eee1963e22cf5935"].unchecked_into(),
            // sfH6jAeHqDpwtYGv9KJWNJ8aom8ivSvVztRSwAHw4bXd1isoP
            hex!["95f73a6271b517f2016fa91411bdeeb990158066c95f106a79697446ba9f78b4"].unchecked_into(),
            // sfEXSdKyx6uQBzgR3a7oH53XSCLrjUM2B7fbcvUvm21b5J6Uf
            hex!["241bfc05caa2d3e53e671df7261599c13f069a37f6cc4be10b5d49502c3a1e1c"].unchecked_into(),
            // sfGXqJTwJTkh3bwhECju7XCdgvJXYJZUtYSEJ2PbfpXGak42s
            hex!["7ce0c80ee65fb00e229d8c8fa5484144eca3d45d733165fbffcdb4de24c14951"].unchecked_into(),
        ),
        (
            // sfFfpXNxt1AZMF5WaXLCftSq2QGTXHU67pPEaMHyWeKUshcjU
            hex!["56bbe4fddb35ccdfbc59fad45f011c0bd0869fe42b34396804c060dc963bf866"].into(),
            // sfFfpXNxt1AZMF5WaXLCftSq2QGTXHU67pPEaMHyWeKUshcjU
            hex!["56bbe4fddb35ccdfbc59fad45f011c0bd0869fe42b34396804c060dc963bf866"].into(),
            // sfFYHfDdGaLgwFW6qZtKt9xrjjiojSR3VCv8t9ouApagY1P1V
            hex!["50fd46be1d746a5d355018615bacef98ac280dbed490ef2a26c1aefd06ec4f1c"].unchecked_into(),
            // sfETREDdpH8vyT6zHEfcF5qdJhNw8iJVFeSfspKHv2BeUGQg5
            hex!["210a4b979e39c3136be105df1974fc036f4fe9b035936c149bdb94a3f4820487"].unchecked_into(),
            // sfFosaRRkzgcbV9nDPkuxVKhnHrcD9eNtxijfFScW68pMzQVg
            hex!["5ce0221a8ee8b7e093ef9ca48f08b890d65c6ef98185010c5013d7a0e108452d"].unchecked_into(),
            // sfFJUD8AVDktXRzUJWsevLWSX6MT8tM6ft9ufVQZCPvqBz12y
            hex!["46735b00d80e2e32c4eb652729c791d32f83f5f423a3d963c3c226ab0d131129"].unchecked_into(),
        ),
        (
            // sfESE7VifnknxVe71z3zsqC3xiirXyzHurKjdQoD537WpwJjW
            hex!["2021a16182e3af39a79d20021a1b8755d589c04292d361d6b387411f7e975602"].into(),
            // sfESE7VifnknxVe71z3zsqC3xiirXyzHurKjdQoD537WpwJjW
            hex!["2021a16182e3af39a79d20021a1b8755d589c04292d361d6b387411f7e975602"].into(),
            // sfFzQmYYckD8XLV7XGU1pJAyt1K3foCpPumpKBqdb5sJGHXrc
            hex!["64e9968f3af2e1a86ee8d4be9ad77a1d66f50138527988bf93ede25baaf2e671"].unchecked_into(),
            // sfFHjCLzWetvQJQzNwxeWcrkHmnPS1mVz7gT63yiRdvxFZ9T8
            hex!["45e28f333bf0d4a9956ae20341cd07db8d471c4b482ed15d5cf7edd70201670d"].unchecked_into(),
            // sfHJAk4HiVuMjXqaXoFEKTCF6938Lta7qd9w3zbyyuWCs1T5L
            hex!["9eb1063afcaf568e7a62458ef33237a41ca500c89e084f7a5dd75bf5d89b105a"].unchecked_into(),
            // sfEm2SME5H6GiezhYokZWmrZLMTUNFbLV7xwgKrMXz3NwppKb
            hex!["2e77fde21162d1f21ca371846d70c3b75931329074101ee668e614336d25c120"].unchecked_into(),
        ),
        (
            // sfHpvEbP79MrDMVw4GhTvgLSU987ZSJ21VAsDWiJdgjG3ijse
            hex!["b624cb291f7464773f3b449ee2252165f3934ace08b1e10611a53e174766fc73"].into(),
            // sfHpvEbP79MrDMVw4GhTvgLSU987ZSJ21VAsDWiJdgjG3ijse
            hex!["b624cb291f7464773f3b449ee2252165f3934ace08b1e10611a53e174766fc73"].into(),
            // sfJHYLgjoHotvKi46URmtaVoG4p54SPE2ASTrauym99WxFcAn
            hex!["ca72b6ea2c83f9e429479bf51c324ea90cbf01e08d2850ced2590c8796cfe222"].unchecked_into(),
            // sfFVPqgCsDQe3k4qhGmUH4UoZaxsGb9majPgoH3WaYCZjFhTf
            hex!["4ec8584ca9da16d8c60e1770e98fbca8bec648e13c69601e3dfdc1330bf1f999"].unchecked_into(),
            // sfJ6nxM1SvcdbV2Gmf8WKkPKeX6rRYaEmSj7V9r64799acqHV
            hex!["c2403683be24a92ae8489e28fb502e2bab16d815c4f6c865c50ffb34430a8d7c"].unchecked_into(),
            // sfK1sQY3GL8waX2htW9EaBo9MjWGuy4VGeiUfP4NCq5tCjt37
            hex!["eabb3463e300f357b9886683d5a240a395f6bd41182057f03b0e9697a8b3465e"].unchecked_into(),
        ),
        (
            // sfJeU4TBQyuGxfsCqNDPax1TcfAseEmBDPqx5YEm7kXUvnnPa
            hex!["da6875e9df9a7894e065ef5befcde567dec4dc2c0b73a6ad5514dcca26a90702"].into(),
            // sfJeU4TBQyuGxfsCqNDPax1TcfAseEmBDPqx5YEm7kXUvnnPa
            hex!["da6875e9df9a7894e065ef5befcde567dec4dc2c0b73a6ad5514dcca26a90702"].into(),
            // sfGbxmQAD2jbktjRkq6NsJxHKHWnkdtvoR14fFPAX85t148ej
            hex!["8006e3f6e3d92c4c5f2e2f001452e4993e6d5c2b1136f2ae6060c6e9c9523b4a"].unchecked_into(),
            // sfGm1jJagueW5dCng6xKCDx3FX2JohtsYMuNjf2tJGXN5ePUL
            hex!["86ee138c9e7e67c1c2e157c0ba888761a122d8b9aa6a8653e886ac329e34255d"].unchecked_into(),
            // sfEB68auUQmSCK8M3Zr7WuzRSipj9sQ5ykfDmvLmT8FDY5bg6
            hex!["1496150847d512e0491899eba72ee36f76b882ae29fccf18201fd9fbd5bfd300"].unchecked_into(),
            // sfHZqUptNXpRNGPHKn2Tfv8K1RjFGJ9XCdSw41nPAw9ZXM37T
            hex!["aaa41b6ade4c30b5792aa6e5604c444e424900ddf649b23eed4bd0d7f5d3a34f"].unchecked_into(),
        ),
        (
            // sfE5QbiXRdo2LPuCFeERnsnC5sAy77Z4jPs2UDdfJp3tB2d7d
            hex!["1040c71fc62c08d520f04bff23814cf9a19673e385142f7ea910c7fbaa910e06"].into(),
            // sfE5QbiXRdo2LPuCFeERnsnC5sAy77Z4jPs2UDdfJp3tB2d7d
            hex!["1040c71fc62c08d520f04bff23814cf9a19673e385142f7ea910c7fbaa910e06"].into(),
            // sfKEDXTZFX9qYY5R1byL9TeQo8ZsntjW14LQiNJGd4QRoCBFQ
            hex!["f425e0965fc1b6593288a5d100396028217f5931f1bdebaf491358485dfa7f29"].unchecked_into(),
            // sfFMJBwfdJH3FEZskFqQwqbGmNTJi7xezD8f3nBkiZnqrK827
            hex!["489b5c32c26dbb04ebaa41695d043934120cdb5794ecb9c51748a9e0edfb9286"].unchecked_into(),
            // sfFtns1zSKikBdrsfZiTXurvkW5eXoTpfdsFGaLr19DmcCVbJ
            hex!["60a07df1236d676011eb5a49c2e01a04f734a05599e0df51208899bfd746a23e"].unchecked_into(),
            // sfE5WnWog35DjmZCrLXrykHpuZqfXFzGS8QPcrApTGX9cTsq6
            hex!["10559a32c870d6087db5367f31c6828d5615effa8f0334362ec444666908ba59"].unchecked_into(),
        ),
        (
            // sfKNSYk6WQiZMPhpFDAYhRjRB8QuYHNaLMYCzvwW8E4KKcLkb
            hex!["fa6bad513351346342177594080c851e5ac91ebebe708cf368a1044972582f53"].into(),
            // sfKNSYk6WQiZMPhpFDAYhRjRB8QuYHNaLMYCzvwW8E4KKcLkb
            hex!["fa6bad513351346342177594080c851e5ac91ebebe708cf368a1044972582f53"].into(),
            // sfJ7gjGKvJXfjaksRN6HtGzV8CY3qjbBFwXMbBm7cpffra9bC
            hex!["c2ee8058909f4880a068190a9cff3b9fa570cdec110334f174b16d9e7d720056"].unchecked_into(),
            // sfFxKzncyhPqkgYjiscCQkKPF6pv2gmAHx4X9E31mTx5M4Kmh
            hex!["635308cf5fae9b94271b09a4987064319d57c93abea88671841a84e41be5a83f"].unchecked_into(),
            // sfFaK2fztXjWxhjHHeqozqWM9mxaRFvdX4YJxBXSpQ65TjYwd
            hex!["528860f091ca1634af2919472880b93f1788532c2d6779ef940a900c5abc1a26"].unchecked_into(),
            // sfEQauBcUMsw7VVhQU42Ruby8NmJzjAFUrhTvwdhM6stWoryD
            hex!["1ee11e06d7a61e49d61636d1be7c2a58ba26dd87110806ce8573b973f5f6892a"].unchecked_into(),
        ),
        (
            // sfGJKN63BXp2HXedcFVbK1LpVTLXy8oQ23rfXcvVmVsjfxKQ8
            hex!["7291cffd9a948e4a8f7ea9015faae5c9f2384821c34e831d5afaec3284a7c563"].into(),
            // sfGJKN63BXp2HXedcFVbK1LpVTLXy8oQ23rfXcvVmVsjfxKQ8
            hex!["7291cffd9a948e4a8f7ea9015faae5c9f2384821c34e831d5afaec3284a7c563"].into(),
            // sfKNJkxBA1p2xm2ma7QrunWQdxjw64XBgUEHtgLL7GYJgZbH1
            hex!["fa517486ef74d8cedbabc8fe4470b3e79c9afd44fca7e5c639e1612c026d2c3d"].unchecked_into(),
            // sfKVXVa2ytTrs3uEipUDDaJobqsYK7K3CznYtEQoWFBiWpCqD
            hex!["ffd30acb4b7b4563585618fa0e35f0d64a512387fabe6db931e726e44d0e6726"].unchecked_into(),
            // sfHCPzucMXGwXPSTudec91AWTxDJFddieczv52pSHVfzp3Mgf
            hex!["9a4a2cfc28b9196eea423b6177252f7598e93c5e40396a91d214e0bc6c4aca73"].unchecked_into(),
            // sfFiMDSaChtDQLBd1eEZve8jbaCA3oPqrJEU8zrX9EhaLSmF8
            hex!["58a9b312e847a5bdd1d92d603c07fc3fb5af8d241c482c41e5a30db6240a4779"].unchecked_into(),
        ),
        (
            // sfF2fiFe2PteoYe286cZNJpxaT1omCPuTgwHjB1Z8tqjsLxRn
            hex!["3a6626211a2dd35683fd7cb5f2f343d75f2b698d6c48c2d6eb1cdbe116e32315"].into(),
            // sfF2fiFe2PteoYe286cZNJpxaT1omCPuTgwHjB1Z8tqjsLxRn
            hex!["3a6626211a2dd35683fd7cb5f2f343d75f2b698d6c48c2d6eb1cdbe116e32315"].into(),
            // sfG9m1LEV1sjUwyLwp1UQPUGnuMGF1oaCjSC4PVx9q4zgJRMr
            hex!["6c0aec49974aaff08ff962a2d8d7857227d027ed27a272cbc4acaa1ee937db0f"].unchecked_into(),
            // sfH3JwHTbimvG3SZLd5d8Ad8Ztvgb8NVSwxxzxYfArpXVYqFD
            hex!["935becdfb2e0d4fcd46ba82e680cfc447180de6b85ec42d17f1396a520b0c04f"].unchecked_into(),
            // sfGkKjBX5UdujuTrbxyepUzdU4Jew7DvgNs1UUM2HBLj4xNM5
            hex!["86676ad3cd2d970b86dee2f25d4318f9bba40455111f16300e114e7f00c58706"].unchecked_into(),
            // sfDisU5wryao4kcd4WuHyZZB6LfJrDuoQoU14cTiiJqD7Whoc
            hex!["009712519ba7dad1c682c871b94573ccaba8b7d530f7194fb16bf553fd7ae67d"].unchecked_into(),
        ),
        (
            // sfFFgDT9JGTsCUP7sXoQEGNq5XXsMeDR1mpD28W5NSFu6ig7s
            hex!["445208ab2cd2f9169f1a011bc9d53dd6bc11b139b27caef3bbb1342609931738"].into(),
            // sfFFgDT9JGTsCUP7sXoQEGNq5XXsMeDR1mpD28W5NSFu6ig7s
            hex!["445208ab2cd2f9169f1a011bc9d53dd6bc11b139b27caef3bbb1342609931738"].into(),
            // sfGysxbgyHeqw4S72CcnzgM4roTLLa7CvLbDQAvH2UHYcYE7Z
            hex!["90be1b9c74b38458219433533456b85100727a7f7d5718f0f5aa2145583d4e09"].unchecked_into(),
            // sfFyeJL6i7DEEssvdyx1PS7B7BH7qotJpc8VA7GXNkFhVnYzy
            hex!["6453e432623c915705afc09e0da19b05b58005d4269838b643f11f5df7524b02"].unchecked_into(),
            // sfHC7MKpM13HB9KVjK7iJML2ufv6bENKMraM3km46a1w1a3hX
            hex!["9a12223615fe9cb2967c2b19eb2a4571dcb38a6e059b746c68d58cd00d408b17"].unchecked_into(),
            // sfJ4G6mRDvMD3n3JGtithmLDawUXozNwNxAvU59hLnikg5rJp
            hex!["c051db0753ad038264d823a71e5c5552e456231b9a1c4e1e7584c6d1c854d44b"].unchecked_into(),
        ),
        (
            // sfHKwmHpzizE1dqYFwzJc2Vui9TRL5FU9t6EQ5i3tp2sWUN5S
            hex!["a00bd3284a6824ad7f757d98a2646c055126c5dd6450be383760b4f6c0193e40"].into(),
            // sfHKwmHpzizE1dqYFwzJc2Vui9TRL5FU9t6EQ5i3tp2sWUN5S
            hex!["a00bd3284a6824ad7f757d98a2646c055126c5dd6450be383760b4f6c0193e40"].into(),
            // sfEttgKF63S1g7PJdB9z3ZRNpfZugyLiA4q6SrX1ntv4dqDcb
            hex!["3477d5cb7f3dffb8d76a33f32bcbcb5669f992d56ab222cfa0ab496b5b8bff12"].unchecked_into(),
            // sfF2aCwAbfUpg3brbSRr368CBxVKjacPVdS6V7R5fPV5zZRJF
            hex!["3a539da581ced44fe567f9dee8a037fbd6cbe5027afe0c1099e3df0a621f030a"].unchecked_into(),
            // sfEwZJYyGXvWDYGbR1dd7JghkRtAbPPkEqkeMzf9aYNP1nZ8V
            hex!["3680593818dfa5ed287de4320f730ae22f2a9c05ebebfad931322411ec508961"].unchecked_into(),
            // sfEN67QJUC8PccCWFidfASD4zBScaV6na9j7AQfAHa6BHcwh6
            hex!["1cf9b6843abd08eee9f99c5db2c9546fa72ef603a5db0e3c9372e63ec6bb6a06"].unchecked_into(),
        ),
    ];

    let ghost_accounts: Vec<(AccountId, u128, u8)> = casper_testnet_evm_accounts();
    let evm_networks = casper_testnet_evm_networks();

    const ENDOWMENT: u128 = 31 * CSPR;
    const STASH: u128 = 69 * CSPR;

    serde_json::json!({
        "balances": {
            "balances": endowed_accounts
                .iter()
                .map(|k: &AccountId| (k.clone(), ENDOWMENT))
                .chain(initial_authorities.iter().map(|x| (x.0.clone(), STASH)))
                .collect::<Vec<_>>(),
        },
        "session": {
            "keys": initial_authorities
                .iter()
                .map(|x| {
                    (
                        x.0.clone(),
                        x.0.clone(),
                        casper_session_keys(
                            x.2.clone(),
                            x.3.clone(),
                            x.4.clone(),
                            x.5.clone(),
                        ),
                    )
                })
                .collect::<Vec<_>>(),
        },
        "staking": {
            "validatorCount": 19,
            "minimumValidatorCount": 13,
            "stakers": initial_authorities
                .iter()
                .map(|x| {
                    (
                        x.0.clone(), 
                        x.0.clone(), 
                        STASH, 
                        casper::StakerStatus::<AccountId>::Validator,
                    )
                })
                .collect::<Vec<_>>(),
            "invulnerables": initial_authorities
                .iter()
                .map(|x| x.0.clone())
                .collect::<Vec<_>>(),
            "forceEra": Forcing::NotForcing,
            "slashRewardFraction": Perbill::from_percent(10)
        },
        "babe": {
            "epochConfig": Some(casper::BABE_GENESIS_EPOCH_CONFIG),
        },
        "ghostNetworks": {
            "networks": evm_networks,
        },
        "ghostClaims": {
            "total": ghost_accounts
                .iter()
                .fold(0, |acc, k| acc + k.1),
            "membersAndRanks": ghost_accounts
                .iter()
                .map(|k| (k.0.clone(), k.2.clone()))
                .collect::<Vec<_>>(),
        },
    })
}

#[cfg(feature = "casper-native")]
fn casper_development_config_genesis() -> serde_json::Value {
    testnet_config_genesis(
        vec![get_authority_keys_from_seed("Alice")],
        None, None, None,
    )
}

#[cfg(feature = "casper-native")]
fn casper_local_config_genesis() -> serde_json::Value {
    testnet_config_genesis(
        vec![
            get_authority_keys_from_seed("Alice"), 
            get_authority_keys_from_seed("Bob"),
        ],
        Some(casper_testnet_accounts()),
        Some(casper_testnet_evm_accounts()), 
        Some(casper_testnet_evm_networks()),
    )
}

#[cfg(feature = "casper-native")]
pub fn casper_development_config() -> Result<CasperChainSpec, String> {
    Ok(CasperChainSpec::builder(
        casper::WASM_BINARY.ok_or("Casper development wasm not available")?,
        Default::default(),
    )
    .with_name("Development")
    .with_id("casper_dev")
    .with_chain_type(ChainType::Development)
    .with_genesis_config_patch(casper_development_config_genesis())
    .with_protocol_id(DEFAULT_PROTOCOL_ID)
    .with_properties(casper_chain_spec_properties())
    .build())
}

#[cfg(feature = "casper-native")]
pub fn casper_local_testnet_config() -> Result<CasperChainSpec, String> {
    Ok(CasperChainSpec::builder(
        casper::WASM_BINARY.ok_or("Casper local testnet wasm not available")?,
        Default::default(),
    )
    .with_name("Casper Local Testnet")
    .with_id("casper_local_testnet")
    .with_chain_type(ChainType::Local)
    .with_genesis_config_patch(casper_local_config_genesis())
    .with_protocol_id(DEFAULT_PROTOCOL_ID)
    .with_properties(casper_chain_spec_properties())
    .build())
}

#[cfg(feature = "casper-native")]
pub fn casper_staging_testnet_config() -> Result<CasperChainSpec, String> {
    Ok(CasperChainSpec::builder(
        casper::WASM_BINARY.ok_or("Casper staging testnet wasm not available")?,
        Default::default(),
    )
    .with_name("Casper Staging Testnet")
    .with_id("casper_staging_testnet")
    .with_chain_type(ChainType::Live)
    .with_genesis_config_patch(casper_staging_config_genesis())
    .with_telemetry_endpoints(
        TelemetryEndpoints::new(vec![(CASPER_TELEMETRY_URL.to_string(), 0)])
            .expect("Casper Staging telemetry url is valid; qed"),
    )
    .with_protocol_id(DEFAULT_PROTOCOL_ID)
    .with_properties(casper_chain_spec_properties())
    .build())
}