import {useState} from 'react';
import {browserHistory} from 'react-router';
import styled from '@emotion/styled';
import {Location} from 'history';

import Feature from 'sentry/components/acl/feature';
import {Alert} from 'sentry/components/alert';
import * as Layout from 'sentry/components/layouts/thirds';
import PageFiltersContainer from 'sentry/components/organizations/pageFilters/container';
import SentryDocumentTitle from 'sentry/components/sentryDocumentTitle';
import {Tabs} from 'sentry/components/tabs';
import {t} from 'sentry/locale';
import {Organization, Project} from 'sentry/types';
import {defined} from 'sentry/utils';
import EventView from 'sentry/utils/discover/eventView';
import {useMetricsCardinalityContext} from 'sentry/utils/performance/contexts/metricsCardinality';
import {PerformanceEventViewProvider} from 'sentry/utils/performance/contexts/performanceEventViewContext';
import {decodeScalar} from 'sentry/utils/queryString';
import {normalizeUrl} from 'sentry/utils/withDomainRequired';

import {getTransactionName} from '../utils';

import PageLayout from './pageLayout/pageLayout';
import Tab from './pageLayout/tabs';
import usePageTabs from './pageLayout/usePageTabs';
import TransactionHeader from './header';
import {TransactionThresholdMetric} from './transactionThresholdModal';

export type ChildProps = {
  eventView: EventView;
  location: Location;
  organization: Organization;
  projectId: string;
  projects: Project[];
  setError: React.Dispatch<React.SetStateAction<string | undefined>>;
  transactionName: string;
  // These are used to trigger a reload when the threshold/metric changes.
  transactionThreshold?: number;
  transactionThresholdMetric?: TransactionThresholdMetric;
};

type Props = {
  childComponent: (props: ChildProps) => JSX.Element;
  generateEventView: (props: {
    location: Location;
    organization: Organization;
    transactionName: string;
  }) => EventView;
  getDocumentTitle: (name: string) => string;
  location: Location;
  organization: Organization;
  projects: Project[];
  tab: Tab;
  features?: string[];
};

function Page(props: Props) {
  const {
    location,
    organization,
    projects,
    tab,
    getDocumentTitle,
    generateEventView,
    childComponent: ChildComponent,
    features = [],
  } = props;

  const projectId = decodeScalar(location.query.project);
  const transactionName = getTransactionName(location);
  const [error, setError] = useState<string | undefined>();
  const metricsCardinality = useMetricsCardinalityContext();
  const [transactionThreshold, setTransactionThreshold] = useState<number | undefined>();
  const [transactionThresholdMetric, setTransactionThresholdMetric] = useState<
    TransactionThresholdMetric | undefined
  >();

  const {onTabChange} = usePageTabs({
    location,
    organization,
    projectId,
    projects,
    tab,
    transactionName,
  });

  if (!defined(projectId) || !defined(transactionName)) {
    redirectToPerformanceHomepage(organization, location);
    return null;
  }

  const project = projects.find(p => p.id === projectId);
  const eventView = generateEventView({location, transactionName, organization});

  return (
    <PageLayout
      title={getDocumentTitle(transactionName)}
      organization={organization}
      tab={tab}
      project={project}
    >
      <ChildComponent
        location={location}
        organization={organization}
        projects={projects}
        eventView={eventView}
        projectId={projectId}
        transactionName={transactionName}
        setError={setError}
        transactionThreshold={transactionThreshold}
        transactionThresholdMetric={transactionThresholdMetric}
      />
    </PageLayout>
  );
  // return (
  //   <SentryDocumentTitle
  //     title={getDocumentTitle(transactionName)}
  //     orgSlug={organization.slug}
  //     projectSlug={project?.slug}
  //   >
  //     <Feature
  //       features={['performance-view', ...features]}
  //       organization={organization}
  //       renderDisabled={NoAccess}
  //     >
  //       <PerformanceEventViewProvider value={{eventView}}>
  //         <PageFiltersContainer
  //           shouldForceProject={defined(project)}
  //           forceProject={project}
  //           specificProjectSlugs={defined(project) ? [project.slug] : []}
  //         >
  //           <Tabs value={tab} onChange={onTabChange}>
  //             <Layout.Page>
  //               <TransactionHeader
  //                 eventView={eventView}
  //                 location={location}
  //                 organization={organization}
  //                 projects={projects}
  //                 projectId={projectId}
  //                 transactionName={transactionName}
  //                 currentTab={tab}
  //                 hasWebVitals={tab === Tab.WebVitals ? 'yes' : 'maybe'}
  //                 onChangeThreshold={(threshold, metric) => {
  //                   setTransactionThreshold(threshold);
  //                   setTransactionThresholdMetric(metric);
  //                 }}
  //                 metricsCardinality={metricsCardinality}
  //               />
  //               <Layout.Body>
  //                 {defined(error) && (
  //                   <StyledAlert type="error" showIcon>
  //                     {error}
  //                   </StyledAlert>
  //                 )}
  //                 <ChildComponent
  //                   location={location}
  //                   organization={organization}
  //                   projects={projects}
  //                   eventView={eventView}
  //                   projectId={projectId}
  //                   transactionName={transactionName}
  //                   setError={setError}
  //                   transactionThreshold={transactionThreshold}
  //                   transactionThresholdMetric={transactionThresholdMetric}
  //                 />
  //               </Layout.Body>
  //             </Layout.Page>
  //           </Tabs>
  //         </PageFiltersContainer>
  //       </PerformanceEventViewProvider>
  //     </Feature>
  //   </SentryDocumentTitle>
  // );
}

export function NoAccess() {
  return <Alert type="warning">{t("You don't have access to this feature")}</Alert>;
}

// const StyledAlert = styled(Alert)`
//   grid-column: 1/3;
//   margin: 0;
// `;

export function redirectToPerformanceHomepage(
  organization: Organization,
  location: Location
) {
  // If there is no transaction name, redirect to the Performance landing page
  browserHistory.replace(
    normalizeUrl({
      pathname: `/organizations/${organization.slug}/performance/`,
      query: {
        ...location.query,
      },
    })
  );
}

export default Page;