import {
  DialogBody,
  DialogButton,
  DialogControlsSection,
  Field,
  Focusable,
  Navigation,
  ProgressBar,
  SteamSpinner,
} from '@decky/ui';
import { useEffect, useState } from 'react';
import { useTranslation } from 'react-i18next';
import { FaDownload, FaFlask, FaInfo } from 'react-icons/fa';

import { setSetting } from '../../../../utils/settings';
import { UpdateBranch } from '../general/BranchSelect';

interface TestingVersion {
  id: number;
  name: string;
  link: string;
  head_sha: string;
}

const getTestingVersions = DeckyBackend.callable<[], TestingVersion[]>('updater/get_testing_versions');
const downloadTestingVersion = DeckyBackend.callable<[pr_id: number, sha: string]>('updater/download_testing_version');

export default function TestingVersionList() {
  const { t } = useTranslation();

  const [testingVersions, setTestingVersions] = useState<TestingVersion[]>([]);
  const [loading, setLoading] = useState<boolean>(true);
  const [updateProgress, setUpdateProgress] = useState<number | null>(null);
  const [reloading, setReloading] = useState<boolean>(false);

  useEffect(() => {
    (async () => {
      setTestingVersions(await getTestingVersions());
      setLoading(false);
    })();
  }, []);

  useEffect(() => {
    const a = DeckyBackend.addEventListener('updater/update_download_percentage', (percentage) => {
      setUpdateProgress(percentage);
    });

    const b = DeckyBackend.addEventListener('updater/finish_download', () => {
      setReloading(true);
    });

    return () => {
      DeckyBackend.removeEventListener('updater/update_download_percentage', a);
      DeckyBackend.removeEventListener('updater/finish_download', b);
    };
  }, []);

  if (loading) {
    return (
      <>
        <SteamSpinner background="transparent">{t('Testing.loading')}</SteamSpinner>
      </>
    );
  }

  if (testingVersions.length === 0) {
    return (
      <div>
        <p>No open PRs found</p>
      </div>
    );
  }

  return (
    <DialogBody>
      {updateProgress !== null && <ProgressBar nProgress={updateProgress} indeterminate={reloading} />}
      <DialogControlsSection>
        <h4>{t('Testing.header')}</h4>
        <ul style={{ listStyleType: 'none', padding: '0' }}>
          {testingVersions.map((version) => {
            return (
              <li>
                <Field
                  label={
                    <>
                      {version.name} <span style={{ opacity: '50%' }}>{'#' + version.id}</span>
                    </>
                  }
                >
                  <Focusable style={{ height: '40px', marginLeft: 'auto', display: 'flex' }}>
                    <DialogButton
                      style={{ height: '40px', minWidth: '60px', marginRight: '10px' }}
                      onClick={async () => {
                        const downloadToast = DeckyPluginLoader.toaster.toast({
                          title: t('Testing.start_download_toast', { id: version.id }),
                          body: null,
                          icon: <FaFlask />,
                        });
                        try {
                          await downloadTestingVersion(version.id, version.head_sha);
                          downloadToast.dismiss();
                        } catch (e) {
                          if (e instanceof Error) {
                            DeckyPluginLoader.toaster.toast({
                              title: t('Testing.error'),
                              body: `${e.name}: ${e.message}`,
                              icon: <FaFlask />,
                            });
                          }
                        }
                        setSetting('branch', UpdateBranch.Testing);
                      }}
                    >
                      <div
                        style={{
                          display: 'flex',
                          minWidth: '150px',
                          justifyContent: 'space-between',
                          alignItems: 'center',
                        }}
                      >
                        {t('Testing.download')}
                        <FaDownload style={{ paddingLeft: '1rem' }} />
                      </div>
                    </DialogButton>
                    <DialogButton
                      style={{
                        height: '40px',
                        width: '40px',
                        padding: '10px 12px',
                        minWidth: '40px',
                        display: 'flex',
                        flexDirection: 'column',
                        justifyContent: 'center',
                      }}
                      onClick={() => Navigation.NavigateToExternalWeb(version.link)}
                    >
                      <FaInfo />
                    </DialogButton>
                  </Focusable>
                </Field>
              </li>
            );
          })}
        </ul>
      </DialogControlsSection>
    </DialogBody>
  );
}