import { css, cx } from '@emotion/css';
import React from 'react';

import { GrafanaTheme2 } from '@grafana/data';
import { useStyles2, Icon, HorizontalGroup } from '@grafana/ui';

import { getLatestCompatibleVersion } from '../helpers';
import { CatalogPlugin } from '../types';

import { PluginDisabledBadge } from './Badges';
import { GetStartedWithPlugin } from './GetStartedWithPlugin';
import { InstallControls } from './InstallControls';
import { PluginDetailsHeaderDependencies } from './PluginDetailsHeaderDependencies';
import { PluginDetailsHeaderSignature } from './PluginDetailsHeaderSignature';
import { PluginLogo } from './PluginLogo';

type Props = {
  currentUrl: string;
  parentUrl: string;
  plugin: CatalogPlugin;
};

export function PluginDetailsHeader({ plugin, currentUrl, parentUrl }: Props): React.ReactElement {
  const styles = useStyles2(getStyles);
  const latestCompatibleVersion = getLatestCompatibleVersion(plugin.details?.versions);
  const version = plugin.installedVersion || latestCompatibleVersion?.version;

  return (
    <div>
      <div className="page-container">
        <div className={styles.headerContainer}>
          <PluginLogo
            alt={`${plugin.name} logo`}
            src={plugin.info.logos.small}
            className={css`
              object-fit: contain;
              width: 100%;
              height: 68px;
              max-width: 68px;
            `}
          />

          <div className={styles.headerWrapper}>
            {/* Title & navigation */}
            <nav className={styles.breadcrumb} aria-label="Breadcrumb">
              <ol>
                <li>
                  <a className={styles.textUnderline} href={parentUrl}>
                    Plugins
                  </a>
                </li>
                <li>
                  <a href={currentUrl} aria-current="page">
                    {plugin.name}
                  </a>
                </li>
              </ol>
            </nav>

            <div className={styles.headerInformationRow}>
              {/* Org name */}
              <span>{plugin.orgName}</span>

              {/* Links */}
              {plugin.details?.links.map((link: any) => (
                <a key={link.name} href={link.url}>
                  {link.name}
                </a>
              ))}

              {/* Downloads */}
              {plugin.downloads > 0 && (
                <span>
                  <Icon name="cloud-download" />
                  {` ${new Intl.NumberFormat().format(plugin.downloads)}`}{' '}
                </span>
              )}

              {/* Version */}
              {Boolean(version) && <span>{version}</span>}

              {/* Signature information */}
              <PluginDetailsHeaderSignature plugin={plugin} />

              {plugin.isDisabled && <PluginDisabledBadge error={plugin.error!} />}
            </div>

            <PluginDetailsHeaderDependencies
              plugin={plugin}
              latestCompatibleVersion={latestCompatibleVersion}
              className={cx(styles.headerInformationRow, styles.headerInformationRowSecondary)}
            />

            <p>{plugin.description}</p>

            <HorizontalGroup height="auto">
              <InstallControls plugin={plugin} latestCompatibleVersion={latestCompatibleVersion} />
              <GetStartedWithPlugin plugin={plugin} />
            </HorizontalGroup>
          </div>
        </div>
      </div>
    </div>
  );
}

export const getStyles = (theme: GrafanaTheme2) => {
  return {
    headerContainer: css`
      display: flex;
      margin-bottom: ${theme.spacing(3)};
      margin-top: ${theme.spacing(3)};
      min-height: 120px;
    `,
    headerWrapper: css`
      margin-left: ${theme.spacing(3)};
    `,
    breadcrumb: css`
      font-size: ${theme.typography.h2.fontSize};
      li {
        display: inline;
        list-style: none;
        &::after {
          content: '/';
          padding: 0 0.25ch;
        }
        &:last-child::after {
          content: '';
        }
      }
    `,
    headerInformationRow: css`
      display: flex;
      align-items: center;
      margin-top: ${theme.spacing()};
      margin-bottom: ${theme.spacing()};
      flex-flow: wrap;
      & > * {
        &::after {
          content: '|';
          padding: 0 ${theme.spacing()};
        }
        &:last-child::after {
          content: '';
          padding-right: 0;
        }
      }
      font-size: ${theme.typography.h4.fontSize};

      a {
        &:hover {
          text-decoration: underline;
        }
      }
    `,
    headerInformationRowSecondary: css`
      font-size: ${theme.typography.body.fontSize};
    `,
    headerOrgName: css`
      font-size: ${theme.typography.h4.fontSize};
    `,
    signature: css`
      margin: ${theme.spacing(3)};
      margin-bottom: 0;
    `,
    textUnderline: css`
      text-decoration: underline;
    `,
  };
};