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use anagolay_runtime::{
  AccountId, AuraConfig, BalancesConfig, GenesisConfig, GrandpaConfig, Signature, SudoConfig, SystemConfig, WASM_BINARY,
};
use sc_service::ChainType;
use sp_consensus_aura::sr25519::AuthorityId as AuraId;
use sp_core::{ed25519, sr25519, Pair, Public};
use sp_finality_grandpa::AuthorityId as GrandpaId;
use sp_runtime::traits::{IdentifyAccount, Verify};

// Note this is the URL for the telemetry server
//const STAGING_TELEMETRY_URL: &str = "wss://telemetry.polkadot.io/submit/";

/// Specialized `ChainSpec`. This is a specialization of the general Substrate ChainSpec type.
pub type ChainSpec = sc_service::GenericChainSpec<GenesisConfig>;

/// 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()
}

type AccountPublic = <Signature as Verify>::Signer;

/// Helper function to generate an 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 an authority key for Aura
pub fn authority_keys_from_seed(s: &str) -> (AuraId, GrandpaId) {
  (get_from_seed::<AuraId>(s), get_from_seed::<GrandpaId>(s))
}

pub fn development_config() -> Result<ChainSpec, String> {
  let wasm_binary = WASM_BINARY.ok_or_else(|| "Development wasm not available".to_string())?;

  Ok(ChainSpec::from_genesis(
    "Development",
    "dev",
    ChainType::Development,
    move || {
      testnet_genesis(
        wasm_binary,
        vec![authority_keys_from_seed("Alice")],
        get_account_id_from_seed::<sr25519::Public>("Alice"),
        vec![
          get_account_id_from_seed::<sr25519::Public>("Alice"),
          get_account_id_from_seed::<sr25519::Public>("Bob"),
          get_account_id_from_seed::<ed25519::Public>("Anagolay"),
          get_account_id_from_seed::<sr25519::Public>("Alice//stash"),
          get_account_id_from_seed::<sr25519::Public>("Bob//stash"),
          get_account_id_from_seed::<ed25519::Public>("Anagolay//stash"),
        ],
        true,
      )
    },
    vec![],
    None,
    None,
    None,
    None,
  ))
}

pub fn local_testnet_config() -> Result<ChainSpec, String> {
  let wasm_binary = WASM_BINARY.ok_or_else(|| "Development wasm not available".to_string())?;

  Ok(ChainSpec::from_genesis(
    "Local Testnet",
    "local_testnet",
    ChainType::Local,
    move || {
      testnet_genesis(
        wasm_binary,
        vec![
          authority_keys_from_seed("Alice"),
          authority_keys_from_seed("Bob"),
          authority_keys_from_seed("Anagolay"),
        ],
        get_account_id_from_seed::<sr25519::Public>("Alice"),
        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>("Ferdie"),
          get_account_id_from_seed::<ed25519::Public>("Anagolay"),
          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>("Ferdie//stash"),
          get_account_id_from_seed::<ed25519::Public>("Anagolay//stash"),
        ],
        true,
      )
    },
    vec![],
    None,
    None,
    None,
    None,
  ))
}

fn testnet_genesis(
  wasm_binary: &[u8],
  initial_authorities: Vec<(AuraId, GrandpaId)>,
  root_key: AccountId,
  endowed_accounts: Vec<AccountId>,
  _enable_println: bool,
) -> GenesisConfig {
  GenesisConfig {
    system: Some(SystemConfig {
      code: wasm_binary.to_vec(),
      changes_trie_config: Default::default(),
    }),
    balances: Some(BalancesConfig {
      balances: endowed_accounts.iter().cloned().map(|k| (k, 1 << 60)).collect(),
    }),
    aura: Some(AuraConfig {
      authorities: initial_authorities.iter().map(|x| (x.0.clone())).collect(),
    }),
    grandpa: Some(GrandpaConfig {
      authorities: initial_authorities.iter().map(|x| (x.1.clone(), 1)).collect(),
    }),
    sudo: Some(SudoConfig { key: root_key }),
    operations: Default::default(),
    workflows: Default::default(),
  }
}