import { ensureOnce } from 'src/utils/singleton'
import { ETHEREUM_NETWORK, getWeb3 } from 'src/logic/wallets/getWeb3'
import {
  RELAY_API_URL,
  SIGNATURES_VIA_METAMASK,
  TX_SERVICE_HOST
} from 'src/config/names'
import devConfig from './development'
import testConfig from './testing'
import stagingConfig from './staging'
import prodConfig from './production'
import mainnetDevConfig from './development-mainnet'
import mainnetProdConfig from './production-mainnet'
import mainnetStagingConfig from './staging-mainnet'

const configuration = () => {
  if (process.env.NODE_ENV === 'test') {
    return testConfig
  }

  if (process.env.NODE_ENV === 'production') {
    if (process.env.REACT_APP_NETWORK === 'mainnet') {
      return process.env.REACT_APP_ENV === 'production'
        ? mainnetProdConfig
        : mainnetStagingConfig
    }

    return process.env.REACT_APP_ENV === 'production'
      ? prodConfig
      : stagingConfig
  }

  return process.env.REACT_APP_NETWORK === 'mainnet'
    ? mainnetDevConfig
    : devConfig
}

export const getNetwork = () =>
  process.env.REACT_APP_NETWORK === 'mainnet'
    ? ETHEREUM_NETWORK.MAINNET
    : ETHEREUM_NETWORK.RINKEBY

export const getNetworkId = () =>
  process.env.REACT_APP_NETWORK === 'mainnet' ? 1 : 4

const getConfig = ensureOnce(configuration)

export const getTxServiceHost = () => {
  const config = getConfig()

  return config[TX_SERVICE_HOST]
}

export const getTxServiceUriFrom = (safeAddress) =>
  `safes/${safeAddress}/transactions/`

export const getIncomingTxServiceUriTo = (safeAddress) =>
  `safes/${safeAddress}/incoming-transfers/`

export const getSafeCreationTxUri = (safeAddress) => `safes/${safeAddress}/creation/`

export const getRelayUrl = () => getConfig()[RELAY_API_URL]

export const signaturesViaMetamask = () => {
  const config = getConfig()

  return config[SIGNATURES_VIA_METAMASK]
}

export const getGoogleAnalyticsTrackingID = () =>
  getNetwork() === ETHEREUM_NETWORK.MAINNET
    ? process.env.REACT_APP_GOOGLE_ANALYTICS_ID_MAINNET
    : process.env.REACT_APP_GOOGLE_ANALYTICS_ID_RINKEBY

export const getIntercomId = () =>
  process.env.REACT_APP_ENV === 'production'
    ? process.env.REACT_APP_INTERCOM_ID
    : 'plssl1fl'

export const getExchangeRatesUrl = () => 'https://api.exchangeratesapi.io/latest'

export const getSafeLastVersion = () => process.env.REACT_APP_LATEST_SAFE_VERSION  || '1.1.1'

export const buildSafeCreationTxUrl = (safeAddress) => {
  const host = getTxServiceHost()
  const address = getWeb3().utils.toChecksumAddress(safeAddress)
  const base = getSafeCreationTxUri(address)

  return `${host}${base}`
}