import exp from 'constants'
import { BigNumber, utils as ethersUtils } from 'ethers'
import {
  CHAIN_IDS,
  DEFAULT_MESSENGER_WRAPPER_GAS_LIMIT,
  DEFAULT_MESSENGER_WRAPPER_GAS_PRICE,
  DEFAULT_MESSENGER_WRAPPER_CALL_VALUE,
  DEFAULT_L2_BRIDGE_GAS_LIMIT,
  CHECKPOINT_MANAGER_ADDRESSES,
  FX_ROOT_ADDRESSES,
  FX_CHILD_ADDRESSES,
  POLYGON_RPC_ENDPOINTS,
  AMB_PROXY_ADDRESSES
} from './constants'
import {
  goerliNetworkData
} from './networks/index'

export const getMessengerWrapperDefaults = (
  l1ChainId: BigNumber,
  l2ChainId: BigNumber,
  l1BridgeAddress: string,
  l2BridgeConnectorAddress: string,
  l1MessengerAddress: string,
  fxChildTunnelAddress: string,
  fxRootAddress: string = undefined
): any[] => {
  // Ending data to return
  let data: any = []

  // Defaults for most chains
  let defaults: any[] = [
    l1BridgeAddress,
    l1MessengerAddress
  ]

  if (isChainIdArbitrum(l2ChainId)) {
    // const gasLimit: number = DEFAULT_MESSENGER_WRAPPER_GAS_LIMIT
    // const gasPrice: number = DEFAULT_MESSENGER_WRAPPER_GAS_PRICE
    // const callValue: number = DEFAULT_MESSENGER_WRAPPER_CALL_VALUE

    // data.push(
    //   ...defaults,
    //   gasLimit,
    //   gasPrice,
    //   callValue
    // )

    return [l1BridgeAddress]
  } else if (isChainIdOptimism(l2ChainId)) {
    const gasLimit: number = DEFAULT_MESSENGER_WRAPPER_GAS_LIMIT

    data.push(
      ...defaults,
      gasLimit
    )
  } else if (isChainIdXDai(l2ChainId)) {
    const gasLimit: number = 1000000
    const ambAddress: string = getXDaiAmbAddresses(l1ChainId)

    data.push(
      ...defaults,
      gasLimit,
      l2ChainId.toString()
    )
  } else if (isChainIdPolygon(l2ChainId)) {
    const checkpointManager: string = getPolygonCheckpointManagerAddress(l1ChainId)
    fxRootAddress = fxRootAddress || getPolygonFxRootAddress(l1ChainId)

    data.push(
      l1BridgeAddress,
      checkpointManager,
      fxRootAddress,
      fxChildTunnelAddress
    )
  }

  return data
}

export const getL2ConnectorDefaults = (
  chainId: BigNumber,
  l1MessengerWrapperAddress: string,
  l2BridgeAddress: string,
  l2MessengerAddress: string,
  l1ChainId: BigNumber,
  fxChild?: string
) => {
  let defaults
  if (isChainIdArbitrum(chainId)) {
    defaults = [
      l2BridgeAddress
    ]
  } else if (isChainIdOptimism(chainId)) {
    defaults = [
      l2BridgeAddress,
      l2MessengerAddress,
      DEFAULT_L2_BRIDGE_GAS_LIMIT
    ]
  } else if (isChainIdXDai(chainId)) {
    defaults = [
      l2BridgeAddress,
      l2MessengerAddress,
      l1ChainId,
      DEFAULT_L2_BRIDGE_GAS_LIMIT
    ]
  } else if (isChainIdPolygon(chainId)) {
    defaults = [
      l2BridgeAddress,
      fxChild
    ]
  }

  return defaults
}

export const isChainIdOptimism = (chainId: BigNumber): boolean => {
  if (
    chainId.eq(CHAIN_IDS.OPTIMISM.OPTIMISM_TESTNET) ||
    chainId.eq(CHAIN_IDS.OPTIMISM.OPTIMISM_MAINNET) ||
    chainId.eq(CHAIN_IDS.OPTIMISM.LOCAL)
  ) {
    return true
  }

  return false
}

export const isChainIdArbitrum = (chainId: BigNumber): boolean => {
  if (
    chainId.eq(CHAIN_IDS.ARBITRUM.ARBITRUM_TESTNET) ||
    chainId.eq(CHAIN_IDS.ARBITRUM.ARBITRUM_MAINNET)
  ) {
    return true
  }

  return false
}

export const isChainIdXDai = (chainId: BigNumber): boolean => {
  if (chainId.eq(CHAIN_IDS.XDAI.SOKOL) ||
      chainId.eq(CHAIN_IDS.XDAI.XDAI)
  ) {
    return true
  }

  return false
}

export const isChainIdPolygon = (chainId: BigNumber): boolean => {
  if (
    chainId.eq(CHAIN_IDS.POLYGON.MUMBAI) ||
    chainId.eq(CHAIN_IDS.POLYGON.POLYGON)
  ) {
    return true
  }

  return false
}

export const isChainIdMainnet = (chainId: BigNumber): boolean => {
  if (
    chainId.eq(CHAIN_IDS.ETHEREUM.MAINNET)
  ) {
    return true
  }

  return false
}

export const isChainIdGoerli = (chainId: BigNumber): boolean => {
  if (
    chainId.eq(CHAIN_IDS.ETHEREUM.GOERLI)
  ) {
    return true
  }

  return false
}

export const isChainIdKovan = (chainId: BigNumber): boolean => {
  if (
    chainId.eq(CHAIN_IDS.ETHEREUM.KOVAN)
  ) {
    return true
  }

  return false
}

export const isChainIdLocall1 = (chainId: BigNumber): boolean => {
  if (
    chainId.eq(CHAIN_IDS.ETHEREUM.LOCAL)
  ){
    return true
  }
  return false
}

export const isChainIdL1 = (chainId: BigNumber): boolean => {
  if (
    isChainIdMainnet(chainId) ||
    isChainIdGoerli(chainId) ||
    isChainIdKovan(chainId) ||
    isChainIdLocall1(chainId)
  ) {
    return true
  }

  return false
}

export const getXDaiAmbAddresses = (l1ChainId: BigNumber): string => {
  if (isChainIdMainnet(l1ChainId)) {
    return AMB_PROXY_ADDRESSES.MAINNET
  } else if (isChainIdKovan(l1ChainId)) {
    return AMB_PROXY_ADDRESSES.KOVAN
  } else {
    throw new Error('Invalid Chain ID')
  }
}

// Create an array of strings for each supported chain ID
export const getAllActiveChainIds = (obj: any): string[] =>
  obj && obj instanceof Object
    ? Object.values(obj)
        .map(getAllActiveChainIds)
        .reduce((a: string[], b: any) => a.concat(b), [] as any[])
        .filter((a: any) => typeof a === 'string')
    : [obj]

export const getPolygonRpcEndpoint = (l1ChainId: BigNumber): string => {
  if (isChainIdMainnet(l1ChainId)) {
    return POLYGON_RPC_ENDPOINTS.MAINNET
  } else if (isChainIdGoerli(l1ChainId)) {
    return POLYGON_RPC_ENDPOINTS.GOERLI
  } else {
    throw new Error('Invalid Chain ID')
  }
}

export const getPolygonCheckpointManagerAddress = (l1ChainId: BigNumber): string => {
  if (isChainIdMainnet(l1ChainId)) {
    return CHECKPOINT_MANAGER_ADDRESSES.MAINNET
  } else if (isChainIdGoerli(l1ChainId)) {
    return CHECKPOINT_MANAGER_ADDRESSES.GOERLI
  } else {
    throw new Error('Invalid Chain ID')
  }
}

export const getPolygonFxRootAddress = (l1ChainId: BigNumber): string => {
  if (isChainIdMainnet(l1ChainId)) {
    return FX_ROOT_ADDRESSES.MAINNET
  } else if (isChainIdGoerli(l1ChainId)) {
    return FX_ROOT_ADDRESSES.GOERLI
  } else {
    throw new Error('Invalid Chain ID')
  }
}

export const getPolygonFxChildAddress = (l1ChainId: BigNumber): string => {
  if (isChainIdMainnet(l1ChainId)) {
    return FX_CHILD_ADDRESSES.MAINNET
  } else if (isChainIdGoerli(l1ChainId)) {
    return FX_CHILD_ADDRESSES.GOERLI
  } else {
    throw new Error('Invalid Chain ID')
  }
}