import React, {useEffect, useState} from 'react'
import ExecutionEnvironment from '@docusaurus/ExecutionEnvironment'
import BrowserOnly from '@docusaurus/BrowserOnly'

import useAsync from '@hooks/useAsync'
import getLatestVersion from "@lib/utils/getLatestVersion";
import DownloadLabel from "@components/DownloadLabel";
import VersionSelect from "@components/VersionSelect";

const SCHEMA_BASE_URL = 'https://schema.fitko.de/fit-connect'

export default function ApiSpec(props) {
  const {artifact, path, version, gitlabProjectId, includePrerelease, includePrereleaseVersion} = props
  const [selectedVersion, setSelectedVersion] = useState('')

  const isInBrowser = ExecutionEnvironment.canUseDOM

  const {execute, status, error, value: latestVersion} = useAsync(getLatestVersion, {
    siteVersion: version === undefined ? '*' : version,
    projectId: gitlabProjectId,
    includePrerelease: !!includePrereleaseVersion
  }, false)

  if (isInBrowser) {
    useEffect(() => {
      execute()
    }, [])

    useEffect(async () => {
      if (status === 'success') {
        setSelectedVersion(latestVersion)
      }
    }, [status])
  }

  return (
    <BrowserOnly fallback={<div>Lädt...</div>}>
      {() => {
        import('rapidoc')

        return (
          <div>
            <p>Die aktuell angezeigte Version der API ist {status === 'success' &&
              <code>{latestVersion}</code>} {status === 'success' &&
              <DownloadLabel baseURL={`${SCHEMA_BASE_URL}/${path}`} version={selectedVersion} artifact={artifact} label="OpenAPI"/>}.
            </p>
            <VersionSelect version={selectedVersion} setVersion={setSelectedVersion} gitlabId={gitlabProjectId} includePrerelease={includePrerelease} /><br/>

            {status === 'success' && selectedVersion && <rapi-doc
              render-style="view"
              layout="column"
              spec-url={`${SCHEMA_BASE_URL}/${path}/${selectedVersion}/${artifact}`}
              theme="light"
              schema-description-expanded="true"
              show-info="false"
              show-header="false"
              show-components="false"
              allow-spec-file-load="false"
              allow-authentication={props.allowAuthentication || "true"}
              info-description-headings-in-navbar="false"
              allow-try={props.allowTry || "false"}
              primary-color="#11171a"
              allow-server-selection="false"
              server-url=""
            />}

            {status === 'error' && <p>Die API-Spezifikation konnte leider nicht geladen werden.</p>}
          </div>
        )
      }}
    </BrowserOnly>
  )
}