import { User, Clock, Edit, ChevronDown, ChevronUp } from 'lucide-react';
import moment from 'moment';
import { useEffect, useState } from 'react';
import { Pod } from 'kubernetes-types/core/v1';
import { useCurrentStateAndParams } from '@uirouter/react';

import { Authorized } from '@/react/hooks/useUser';
import { notifyError, notifySuccess } from '@/portainer/services/notifications';

import { DetailsTable } from '@@/DetailsTable';
import { Badge } from '@@/Badge';
import { Link } from '@@/Link';
import { Button, LoadingButton } from '@@/buttons';

import { isSystemNamespace } from '../../namespaces/utils';
import {
  appStackNameLabel,
  appKindToDeploymentTypeMap,
  appOwnerLabel,
  appDeployMethodLabel,
  appNoteAnnotation,
} from '../constants';
import {
  applicationIsKind,
  bytesToReadableFormat,
  getResourceRequests,
  getRunningPods,
  getTotalPods,
  isExternalApplication,
} from '../utils';
import {
  useApplication,
  usePatchApplicationMutation,
} from '../application.queries';
import { Application, ApplicationPatch } from '../types';

export function ApplicationSummaryWidget() {
  const stateAndParams = useCurrentStateAndParams();
  const {
    params: {
      namespace,
      name,
      'resource-type': resourceType,
      endpointId: environmentId,
    },
  } = stateAndParams;
  const applicationQuery = useApplication(
    environmentId,
    namespace,
    name,
    resourceType
  );
  const application = applicationQuery.data;
  const systemNamespace = isSystemNamespace(namespace);
  const externalApplication = application && isExternalApplication(application);
  const applicationRequests = application && getResourceRequests(application);
  const applicationOwner = application?.metadata?.labels?.[appOwnerLabel];
  const applicationDeployMethod = getApplicationDeployMethod(application);
  const applicationNote =
    application?.metadata?.annotations?.[appNoteAnnotation];

  const [isNoteOpen, setIsNoteOpen] = useState(true);
  const [applicationNoteFormValues, setApplicationNoteFormValues] =
    useState('');

  useEffect(() => {
    setApplicationNoteFormValues(applicationNote || '');
  }, [applicationNote]);

  const patchApplicationMutation = usePatchApplicationMutation(
    environmentId,
    namespace,
    name
  );

  return (
    <div className="p-5">
      <DetailsTable>
        <tr>
          <td>Name</td>
          <td>
            <div
              className="flex items-center gap-x-2"
              data-cy="k8sAppDetail-appName"
            >
              {name}
              {externalApplication && !systemNamespace && (
                <Badge type="info">external</Badge>
              )}
            </div>
          </td>
        </tr>
        <tr>
          <td>Stack</td>
          <td data-cy="k8sAppDetail-stackName">
            {application?.metadata?.labels?.[appStackNameLabel] || '-'}
          </td>
        </tr>
        <tr>
          <td>Namespace</td>
          <td>
            <div
              className="flex items-center gap-x-2"
              data-cy="k8sAppDetail-resourcePoolName"
            >
              <Link
                to="kubernetes.resourcePools.resourcePool"
                params={{ id: namespace }}
              >
                {namespace}
              </Link>
              {systemNamespace && <Badge type="info">system</Badge>}
            </div>
          </td>
        </tr>
        <tr>
          <td>Application type</td>
          <td data-cy="k8sAppDetail-appType">{application?.kind || '-'}</td>
        </tr>
        {application?.kind && (
          <tr>
            <td>Status</td>
            {applicationIsKind<Pod>('Pod', application) && (
              <td data-cy="k8sAppDetail-appType">
                {application?.status?.phase}
              </td>
            )}
            {!applicationIsKind<Pod>('Pod', application) && (
              <td data-cy="k8sAppDetail-appType">
                {appKindToDeploymentTypeMap[application.kind]}
                <code className="ml-1">
                  {getRunningPods(application)}
                </code> / <code>{getTotalPods(application)}</code>
              </td>
            )}
          </tr>
        )}
        {(!!applicationRequests?.cpu || !!applicationRequests?.memoryBytes) && (
          <tr>
            <td>
              Resource reservations
              {!applicationIsKind<Pod>('Pod', application) && (
                <div className="text-muted small">per instance</div>
              )}
            </td>
            <td>
              {!!applicationRequests?.cpu && (
                <div data-cy="k8sAppDetail-cpuReservation">
                  CPU {applicationRequests.cpu}
                </div>
              )}
              {!!applicationRequests?.memoryBytes && (
                <div data-cy="k8sAppDetail-memoryReservation">
                  Memory{' '}
                  {bytesToReadableFormat(applicationRequests.memoryBytes)}
                </div>
              )}
            </td>
          </tr>
        )}
        <tr>
          <td>Creation</td>
          <td>
            <div className="flex flex-wrap items-center gap-3">
              {applicationOwner && (
                <span
                  className="flex items-center gap-1"
                  data-cy="k8sAppDetail-owner"
                >
                  <User />
                  {applicationOwner}
                </span>
              )}
              <span
                className="flex items-center gap-1"
                data-cy="k8sAppDetail-creationDate"
              >
                <Clock />
                {moment(application?.metadata?.creationTimestamp).format(
                  'YYYY-MM-DD HH:mm:ss'
                )}
              </span>
              {(!externalApplication || systemNamespace) && (
                <span
                  className="flex items-center gap-1"
                  data-cy="k8sAppDetail-creationMethod"
                >
                  <Clock />
                  Deployed from {applicationDeployMethod}
                </span>
              )}
            </div>
          </td>
        </tr>
        <tr>
          <td colSpan={2}>
            <form className="form-horizontal">
              <div className="form-group">
                <div className="col-sm-12 vertical-center">
                  <Edit /> Note
                  <Button
                    size="xsmall"
                    type="button"
                    color="light"
                    data-cy="k8sAppDetail-expandNoteButton"
                    onClick={() => setIsNoteOpen(!isNoteOpen)}
                  >
                    {isNoteOpen ? 'Collapse' : 'Expand'}
                    {isNoteOpen ? <ChevronUp /> : <ChevronDown />}
                  </Button>
                </div>
              </div>

              {isNoteOpen && (
                <>
                  <div className="form-group">
                    <div className="col-sm-12">
                      <textarea
                        className="form-control resize-y"
                        name="application_note"
                        id="application_note"
                        value={applicationNoteFormValues}
                        onChange={(e) =>
                          setApplicationNoteFormValues(e.target.value)
                        }
                        rows={5}
                        placeholder="Enter a note about this application..."
                      />
                    </div>
                  </div>

                  <Authorized authorizations="K8sApplicationDetailsW">
                    <div className="form-group">
                      <div className="col-sm-12">
                        <LoadingButton
                          color="primary"
                          size="small"
                          className="!ml-0"
                          type="button"
                          onClick={() => patchApplicationNote()}
                          disabled={
                            // disable if there is no change to the note, or it's updating
                            applicationNoteFormValues ===
                              (applicationNote || '') ||
                            patchApplicationMutation.isLoading
                          }
                          data-cy="k8sAppDetail-saveNoteButton"
                          isLoading={patchApplicationMutation.isLoading}
                          loadingText={applicationNote ? 'Updating' : 'Saving'}
                        >
                          {applicationNote ? 'Update' : 'Save'} note
                        </LoadingButton>
                      </div>
                    </div>
                  </Authorized>
                </>
              )}
            </form>
          </td>
        </tr>
      </DetailsTable>
    </div>
  );

  async function patchApplicationNote() {
    const patch: ApplicationPatch = [
      {
        op: 'replace',
        path: `/metadata/annotations/${appNoteAnnotation}`,
        value: 'applicationNoteFormValues',
      },
    ];
    if (application?.kind) {
      try {
        await patchApplicationMutation.mutateAsync({
          appKind: application.kind,
          patch,
        });
        notifySuccess('Success', 'Application successfully updated');
      } catch (error) {
        notifyError(
          `Failed to ${applicationNote ? 'update' : 'save'} note`,
          error as Error
        );
      }
    }
  }
}

function getApplicationDeployMethod(application?: Application) {
  if (!application?.metadata?.labels?.[appDeployMethodLabel])
    return 'application form';
  if (application?.metadata?.labels?.[appDeployMethodLabel] === 'content') {
    return 'manifest';
  }
  return application?.metadata?.labels?.[appDeployMethodLabel];
}