import React, { ReactElement, useState, useEffect } from 'react'
import Compute from './Compute'
import Download from './Download'
import { FileInfo, LoggerInstance, Datatoken } from '@oceanprotocol/lib'
import { compareAsBN } from '@utils/numbers'
import { useAsset } from '@context/Asset'
import { getFileDidInfo, getFileInfo } from '@utils/provider'
import { getOceanConfig } from '@utils/ocean'
import { useCancelToken } from '@hooks/useCancelToken'
import { useIsMounted } from '@hooks/useIsMounted'
import styles from './index.module.css'
import { useFormikContext } from 'formik'
import { FormPublishData } from '@components/Publish/_types'
import { getTokenBalanceFromSymbol } from '@utils/wallet'
import AssetStats from './AssetStats'
import { useAccount, useProvider, useNetwork } from 'wagmi'
import useBalance from '@hooks/useBalance'

export default function AssetActions({
  asset
}: {
  asset: AssetExtended
}): ReactElement {
  const { address: accountId } = useAccount()
  const { balance } = useBalance()
  const { chain } = useNetwork()
  const web3Provider = useProvider()
  const { isAssetNetwork } = useAsset()
  const newCancelToken = useCancelToken()
  const isMounted = useIsMounted()

  // TODO: using this for the publish preview works fine, but produces a console warning
  // on asset details page as there is no formik context there:
  // Warning: Formik context is undefined, please verify you are calling useFormikContext()
  // as child of a <Formik> component.
  const formikState = useFormikContext<FormPublishData>()

  const [isBalanceSufficient, setIsBalanceSufficient] = useState<boolean>()
  const [dtBalance, setDtBalance] = useState<string>()
  const [fileMetadata, setFileMetadata] = useState<FileInfo>()
  const [fileIsLoading, setFileIsLoading] = useState<boolean>(false)
  const isCompute = Boolean(
    asset?.services.filter((service) => service.type === 'compute')[0]
  )

  // Get and set file info
  useEffect(() => {
    const oceanConfig = getOceanConfig(asset?.chainId)
    if (!oceanConfig) return

    async function initFileInfo() {
      setFileIsLoading(true)
      const providerUrl =
        formikState?.values?.services[0].providerUrl.url ||
        asset?.services[0]?.serviceEndpoint

      const storageType = formikState?.values?.services
        ? formikState?.values?.services[0].files[0].type
        : null

      // TODO: replace 'any' with correct typing
      const file = formikState?.values?.services[0].files[0] as any
      const query = file?.query || undefined
      const abi = file?.abi || undefined
      const headers = file?.headers || undefined
      const method = file?.method || undefined

      try {
        const fileInfoResponse = formikState?.values?.services?.[0].files?.[0]
          .url
          ? await getFileInfo(
              formikState?.values?.services?.[0].files?.[0].url,
              providerUrl,
              storageType,
              query,
              headers,
              abi,
              chain?.id,
              method
            )
          : await getFileDidInfo(asset?.id, asset?.services[0]?.id, providerUrl)

        fileInfoResponse && setFileMetadata(fileInfoResponse[0])

        // set the content type in the Dataset Schema
        const datasetSchema = document.scripts?.namedItem('datasetSchema')
        if (datasetSchema) {
          const datasetSchemaJSON = JSON.parse(datasetSchema.innerText)
          if (datasetSchemaJSON?.distribution[0]['@type'] === 'DataDownload') {
            const contentType = fileInfoResponse[0]?.contentType
            datasetSchemaJSON.distribution[0].encodingFormat = contentType
            datasetSchema.innerText = JSON.stringify(datasetSchemaJSON)
          }
        }

        setFileIsLoading(false)
      } catch (error) {
        LoggerInstance.error(error.message)
      }
    }
    initFileInfo()
  }, [asset, isMounted, newCancelToken, formikState?.values?.services])

  // Get and set user DT balance
  useEffect(() => {
    if (!web3Provider || !accountId || !isAssetNetwork) return

    async function init() {
      try {
        const datatokenInstance = new Datatoken(web3Provider as any)
        const dtBalance = await datatokenInstance.balance(
          asset.services[0].datatokenAddress,
          accountId
        )
        setDtBalance(dtBalance)
      } catch (e) {
        LoggerInstance.error(e.message)
      }
    }
    init()
  }, [web3Provider, accountId, asset, isAssetNetwork])

  // Check user balance against price
  useEffect(() => {
    if (asset?.accessDetails?.type === 'free') setIsBalanceSufficient(true)
    if (
      !asset?.accessDetails?.price ||
      !asset?.accessDetails?.baseToken?.symbol ||
      !accountId ||
      !balance ||
      !dtBalance
    )
      return

    const baseTokenBalance = getTokenBalanceFromSymbol(
      balance,
      asset?.accessDetails?.baseToken?.symbol
    )
    setIsBalanceSufficient(
      compareAsBN(baseTokenBalance, `${asset?.accessDetails.price}`) ||
        Number(dtBalance) >= 1
    )

    return () => {
      setIsBalanceSufficient(false)
    }
  }, [balance, accountId, asset?.accessDetails, dtBalance])

  return (
    <div className={styles.actions}>
      {isCompute ? (
        <Compute
          asset={asset}
          dtBalance={dtBalance}
          file={fileMetadata}
          fileIsLoading={fileIsLoading}
        />
      ) : (
        <Download
          asset={asset}
          dtBalance={dtBalance}
          isBalanceSufficient={isBalanceSufficient}
          file={fileMetadata}
          fileIsLoading={fileIsLoading}
        />
      )}
      <AssetStats />
    </div>
  )
}