import { ReactElement, useState, useMemo, useEffect, useRef, useContext } from 'react'
import './AdminStatusBar.scss'
import { ProgressBar } from '../ProgressBar/ProgressBar'
import { Tooltip } from '../Tooltip/Tooltip'
import { PostageBatch } from '@ethersphere/bee-js'
import { DriveInfo } from '@solarpunkltd/file-manager-lib'
import { UpgradeDriveModal } from '../UpgradeDriveModal/UpgradeDriveModal'
import { calculateStampCapacityMetrics } from '../../utils/bee'
import { Context as FMContext } from '../../../../providers/FileManager'
import { ConfirmModal } from '../ConfirmModal/ConfirmModal'

interface AdminStatusBarProps {
  adminStamp: PostageBatch | null
  adminDrive: DriveInfo | null
  loading: boolean
  isCreationInProgress: boolean
  setErrorMessage?: (error: string) => void
}

export function AdminStatusBar({
  adminStamp,
  adminDrive,
  loading,
  isCreationInProgress,
  setErrorMessage,
}: AdminStatusBarProps): ReactElement {
  const { setShowError, refreshStamp } = useContext(FMContext)

  const [isUpgradeDriveModalOpen, setIsUpgradeDriveModalOpen] = useState(false)
  const [isUpgrading, setIsUpgrading] = useState(false)
  const [actualStamp, setActualStamp] = useState<PostageBatch | null>(adminStamp)
  const [showProgressModal, setShowProgressModal] = useState(true)

  const isMountedRef = useRef(true)

  useEffect(() => {
    return () => {
      isMountedRef.current = false
    }
  }, [])

  useEffect(() => {
    setShowProgressModal(isCreationInProgress || loading)
  }, [isCreationInProgress, loading, setShowProgressModal])

  useEffect(() => {
    setActualStamp(adminStamp)
  }, [adminStamp, setActualStamp])

  useEffect(() => {
    if (!adminDrive) return

    const id = adminDrive.id.toString()
    const batchId = adminStamp?.batchID.toString() || ''

    const onStart = (e: Event) => {
      const { driveId } = (e as CustomEvent).detail || {}

      if (driveId === id) {
        setIsUpgrading(true)
      }
    }

    const onEnd = async (e: Event) => {
      const { driveId, success, error } = (e as CustomEvent).detail || {}

      if (!success) {
        if (error) {
          setErrorMessage?.(error)
        }

        setShowError(true)
      }

      if (driveId === id && batchId) {
        setIsUpgrading(false)

        const upgradedStamp = await refreshStamp(batchId)

        if (!isMountedRef.current) return

        if (upgradedStamp) {
          setActualStamp(upgradedStamp)
        }
      }
    }

    window.addEventListener('fm:drive-upgrade-start', onStart as EventListener)
    window.addEventListener('fm:drive-upgrade-end', onEnd as EventListener)

    return () => {
      window.removeEventListener('fm:drive-upgrade-start', onStart as EventListener)
      window.removeEventListener('fm:drive-upgrade-end', onEnd as EventListener)
    }
  }, [adminDrive, adminStamp?.batchID, setErrorMessage, setShowError, refreshStamp, setIsUpgrading])

  const { capacityPct, usedSize, totalSize } = useMemo(
    () => calculateStampCapacityMetrics(actualStamp, adminDrive),
    [actualStamp, adminDrive],
  )

  const expiresAt = useMemo(
    () => (actualStamp ? actualStamp.duration.toEndDate().toLocaleDateString() : '—'),
    [actualStamp],
  )

  const isBusy = loading || isUpgrading || isCreationInProgress
  const blurCls = isBusy ? ' is-loading' : ''
  const statusVerb = isCreationInProgress ? 'Creating' : 'Loading'
  const statusText = statusVerb + '  admin drive, please do not reload'

  return (
    <div>
      <div className={`fm-admin-status-bar-container${blurCls}`} aria-busy={isBusy ? 'true' : 'false'}>
        <div className="fm-admin-status-bar-left">
          <div className="fm-drive-item-capacity">
            Capacity <ProgressBar value={capacityPct} width="150px" /> {usedSize} / {totalSize}
          </div>

          <div>File Manager Available: Until: {expiresAt}</div>

          <Tooltip
            label="The File Manager works only while your storage remains valid. If it expires, all catalogue metadata is
            permanently lost."
          />
        </div>

        {isUpgradeDriveModalOpen && actualStamp && adminDrive && (
          <UpgradeDriveModal
            stamp={actualStamp}
            drive={adminDrive}
            onCancelClick={() => setIsUpgradeDriveModalOpen(false)}
            setErrorMessage={setErrorMessage}
          />
        )}

        <div
          className="fm-admin-status-bar-upgrade-button"
          onClick={() => !isBusy && actualStamp && adminDrive && setIsUpgradeDriveModalOpen(true)}
          aria-disabled={isBusy ? 'true' : 'false'}
        >
          {isBusy ? 'Working…' : 'Manage'}
        </div>

        {isUpgrading && (
          <div className="fm-drive-item-creating-overlay" aria-live="polite">
            <div className="fm-mini-spinner" />
            <span>Upgrading admin drive…</span>
          </div>
        )}

        {showProgressModal && (
          <ConfirmModal
            title="Admin Drive Creation"
            isProgress
            spinnerMessage={statusText}
            showFooter={false}
            showMinimize={true}
            onMinimize={() => setShowProgressModal(false)}
          />
        )}
      </div>
      {!showProgressModal && (loading || isCreationInProgress) && (
        <div className="fm-admin-status-bar-progress-pill-container">
          <div className="fm-admin-status-progress-pill" onClick={() => setShowProgressModal(true)}>
            {statusText}
          </div>
        </div>
      )}
    </div>
  )
}