import React, { useCallback, useState } from 'react'
import PropTypes from 'prop-types'
import { Button, Col, OverlayTrigger, Row, Tooltip } from 'react-bootstrap'
import { Trans } from 'react-i18next'
import Icon from '../../../shared/components/icon'
import {
  useProjectContext,
  useShareProjectContext,
} from './share-project-modal'
import { setProjectAccessLevel } from '../utils/api'
import CopyLink from '../../../shared/components/copy-link'

export default function LinkSharing() {
  const [inflight, setInflight] = useState(false)

  const { monitorRequest } = useShareProjectContext()

  const project = useProjectContext()

  // set the access level of a project
  const setAccessLevel = useCallback(
    publicAccesLevel => {
      setInflight(true)
      monitorRequest(() => setProjectAccessLevel(project, publicAccesLevel))
        .then(() => {
          // NOTE: not calling `updateProject` here as it receives data via
          // project:publicAccessLevel:changed and project:tokens:changed
          // over the websocket connection
          // TODO: eventTracking.sendMB('project-make-token-based') when publicAccesLevel is 'tokenBased'
        })
        .finally(() => {
          setInflight(false)
        })
    },
    [monitorRequest, project]
  )

  switch (project.publicAccesLevel) {
    // Private (with token-access available)
    case 'private':
      return (
        <PrivateSharing setAccessLevel={setAccessLevel} inflight={inflight} />
      )

    // Token-based access
    case 'tokenBased':
      return (
        <TokenBasedSharing
          setAccessLevel={setAccessLevel}
          inflight={inflight}
        />
      )

    // Legacy public-access
    case 'readAndWrite':
    case 'readOnly':
      return (
        <LegacySharing
          setAccessLevel={setAccessLevel}
          accessLevel={project.publicAccesLevel}
          inflight={inflight}
        />
      )

    default:
      return null
  }
}

function PrivateSharing({ setAccessLevel, inflight }) {
  return (
    <Row className="public-access-level">
      <Col xs={12} className="text-center">
        <Trans i18nKey="link_sharing_is_off" />
        <span>&nbsp;&nbsp;</span>
        <Button
          type="button"
          bsStyle="link"
          className="btn-inline-link"
          onClick={() => setAccessLevel('tokenBased')}
          disabled={inflight}
        >
          <Trans i18nKey="turn_on_link_sharing" />
        </Button>
        <span>&nbsp;&nbsp;</span>
        <LinkSharingInfo />
      </Col>
    </Row>
  )
}
PrivateSharing.propTypes = {
  setAccessLevel: PropTypes.func.isRequired,
  inflight: PropTypes.bool,
}

function TokenBasedSharing({ setAccessLevel, inflight }) {
  const project = useProjectContext()

  return (
    <Row className="public-access-level">
      <Col xs={12} className="text-center">
        <strong>
          <Trans i18nKey="link_sharing_is_on" />
        </strong>
        <span>&nbsp;&nbsp;</span>
        <Button
          bsStyle="link"
          className="btn-inline-link"
          onClick={() => setAccessLevel('private')}
          disabled={inflight}
        >
          <Trans i18nKey="turn_off_link_sharing" />
        </Button>
        <span>&nbsp;&nbsp;</span>
        <LinkSharingInfo />
      </Col>
      <Col xs={12} className="access-token-display-area">
        <div className="access-token-wrapper">
          <strong>
            <Trans i18nKey="anyone_with_link_can_edit" />
          </strong>
          <AccessToken
            token={project?.tokens?.readAndWrite}
            path="/"
            tooltipId="tooltip-copy-link-rw"
          />
        </div>
        <div className="access-token-wrapper">
          <strong>
            <Trans i18nKey="anyone_with_link_can_view" />
          </strong>
          <AccessToken
            token={project?.tokens?.readOnly}
            path="/read/"
            tooltipId="tooltip-copy-link-ro"
          />
        </div>
      </Col>
    </Row>
  )
}
TokenBasedSharing.propTypes = {
  setAccessLevel: PropTypes.func.isRequired,
  inflight: PropTypes.bool,
}

function LegacySharing({ accessLevel, setAccessLevel, inflight }) {
  return (
    <Row className="public-access-level">
      <Col xs={12} className="text-center">
        <strong>
          {accessLevel === 'readAndWrite' && (
            <Trans i18nKey="this_project_is_public" />
          )}
          {accessLevel === 'readOnly' && (
            <Trans i18nKey="this_project_is_public_read_only" />
          )}
        </strong>
        <span>&nbsp;&nbsp;</span>
        <Button
          type="button"
          bsStyle="link"
          className="btn-inline-link"
          onClick={() => setAccessLevel('private')}
          disabled={inflight}
        >
          <Trans i18nKey="make_private" />
        </Button>
        <span>&nbsp;&nbsp;</span>
        <LinkSharingInfo />
      </Col>
    </Row>
  )
}
LegacySharing.propTypes = {
  accessLevel: PropTypes.string.isRequired,
  setAccessLevel: PropTypes.func.isRequired,
  inflight: PropTypes.bool,
}

export function ReadOnlyTokenLink() {
  const project = useProjectContext()

  return (
    <Row className="public-access-level">
      <Col xs={12} className="access-token-display-area">
        <div className="access-token-wrapper">
          <strong>
            <Trans i18nKey="anyone_with_link_can_view" />
          </strong>
          <AccessToken
            token={project?.tokens?.readOnly}
            path="/read/"
            tooltipId="tooltip-copy-link-ro"
          />
        </div>
      </Col>
    </Row>
  )
}

function AccessToken({ token, path, tooltipId }) {
  if (!token) {
    return (
      <pre className="access-token">
        <span>
          <Trans i18nKey="loading" />…
        </span>
      </pre>
    )
  }

  const link = `${window.location.origin}${path}${token}`

  return (
    <pre className="access-token">
      <span>{link}</span>
      <CopyLink link={link} tooltipId={tooltipId} />
    </pre>
  )
}
AccessToken.propTypes = {
  token: PropTypes.string,
  tooltipId: PropTypes.string.isRequired,
  path: PropTypes.string.isRequired,
}

function LinkSharingInfo() {
  return (
    <OverlayTrigger
      placement="top"
      overlay={
        <Tooltip id="tooltip-link-sharing-info">
          <Trans i18nKey="learn_more_about_link_sharing" />
        </Tooltip>
      }
    >
      <a
        href="/learn/how-to/What_is_Link_Sharing%3F"
        target="_blank"
        rel="noopener"
      >
        <Icon type="question-circle" />
      </a>
    </OverlayTrigger>
  )
}