/*
 * Copyright (C) 2017 Red Hat, Inc.
 * SPDX-License-Identifier: LGPL-2.1-or-later
 */
import '../lib/patternfly/patternfly-6-cockpit.scss';
import 'polyfills'; // once per application
import 'cockpit-dark-theme'; // once per page

import cockpit from "cockpit";
import React from "react";
import { createRoot } from 'react-dom/client';

import { Badge } from "@patternfly/react-core/dist/esm/components/Badge/index.js";
import { Button } from "@patternfly/react-core/dist/esm/components/Button/index.js";
import { CodeBlock, CodeBlockCode } from "@patternfly/react-core/dist/esm/components/CodeBlock/index.js";
import { Gallery } from "@patternfly/react-core/dist/esm/layouts/Gallery/index.js";
import { Popover } from "@patternfly/react-core/dist/esm/components/Popover/index.js";
import { Tooltip } from "@patternfly/react-core/dist/esm/components/Tooltip/index.js";
import { Card, CardBody, CardHeader, CardTitle } from '@patternfly/react-core/dist/esm/components/Card/index.js';
import { DescriptionList, DescriptionListDescription, DescriptionListGroup, DescriptionListTerm } from "@patternfly/react-core/dist/esm/components/DescriptionList/index.js";
import { ExpandableSection } from "@patternfly/react-core/dist/esm/components/ExpandableSection/index.js";
import { Flex, FlexItem } from "@patternfly/react-core/dist/esm/layouts/Flex/index.js";
import { Grid, GridItem } from "@patternfly/react-core/dist/esm/layouts/Grid/index.js";
import { LabelGroup } from "@patternfly/react-core/dist/esm/components/Label/index.js";
import { Page, PageSection, } from "@patternfly/react-core/dist/esm/components/Page/index.js";
import { Progress, ProgressSize } from "@patternfly/react-core/dist/esm/components/Progress/index.js";
import { Spinner } from "@patternfly/react-core/dist/esm/components/Spinner/index.js";
import { Stack, StackItem } from "@patternfly/react-core/dist/esm/layouts/Stack/index.js";
import { Switch } from "@patternfly/react-core/dist/esm/components/Switch/index.js";
import { Content, ContentVariants } from "@patternfly/react-core/dist/esm/components/Content/index.js";

import {
    BugIcon,
    CheckIcon,
    EnhancementIcon,
    ExclamationCircleIcon,
    ExclamationTriangleIcon,
    RebootingIcon,
    RedoIcon,
    ProcessAutomationIcon,
    SecurityIcon,
} from "@patternfly/react-icons";
import { TableText } from "@patternfly/react-table";
import Markdown, { RuleType } from "markdown-to-jsx";

import { AutoUpdates, getBackend } from "./autoupdates.jsx";
import { KpatchSettings, KpatchStatus } from "./kpatch";
import { History, PackageList } from "./history";
import { RestartServicesDialog } from './restartservices-dialog';
import { TwoColumnContent, TwoColumnTitle } from "./two-column";
import { page_status } from "notifications";
import { EmptyStatePanel } from "cockpit-components-empty-state.jsx";
import { ListingTable } from 'cockpit-components-table.jsx';
import { ShutdownModal } from 'cockpit-components-shutdown.jsx';
import { WithDialogs } from "dialogs.jsx";

import { superuser } from 'superuser';
import * as python from "python.js";
import * as timeformat from "timeformat";

import { debug, watchRedHatSubscription } from './utils';
import { read_os_release } from "os-release.js";
import callTracerScript from './callTracer.py';

import "./updates.scss";
import { Checkbox } from '@patternfly/react-core/dist/esm/components/Checkbox/index.js';
import { Truncate } from '@patternfly/react-core/dist/esm/components/Truncate/index.js';
import { Severity, TransactionExitStatus, UpdateProgressType, UpdateError } from '_internal/packagemanager-abstract';
import { getPackageManager } from 'packagemanager';
import { Icon } from '@patternfly/react-core/dist/esm/components/Icon/index.js';

const _ = cockpit.gettext;

// "available" heading is built dynamically
const STATE_HEADINGS = {};
const STATUS_STRINGS = {};
const STATUS_LOG_STRINGS = {};

const UPDATES = {
    ALL: 0,
    SECURITY: 1,
    KPATCHES: 2,
    SELECTED: 3,
};

/**
 * PackageKit doesn't provide a way to determine what backends support
 * partial updates, so we need to manually add the ones we know has partial
 * package support
 */
const SUPPORTED_PARTIAL_UPDATE_BACKEND = [
    "apt",
    "dnf",
    "dnf5",
    "zypp",
];

export function is_partial_updates_supported(backend) {
    return SUPPORTED_PARTIAL_UPDATE_BACKEND.includes(backend);
}

function init() {
    STATE_HEADINGS.loading = _("Loading available updates, please wait...");
    STATE_HEADINGS.locked = _("Some other program is currently using the package manager, please wait...");
    STATE_HEADINGS.refreshing = _("Refreshing package information");
    STATE_HEADINGS.uptodate = _("System is up to date");
    STATE_HEADINGS.applying = _("Applying updates");
    STATE_HEADINGS.updateError = _("Applying updates failed");
    STATE_HEADINGS.loadError = _("Loading available updates failed");

    STATUS_STRINGS[UpdateProgressType.DOWNLOADING] = _("Downloading");
    STATUS_STRINGS[UpdateProgressType.INSTALLING] = _("Installing");
    STATUS_STRINGS[UpdateProgressType.UPDATING] = _("Updating");
    STATUS_STRINGS[UpdateProgressType.CLEANUP] = _("Setting up");
    STATUS_STRINGS[UpdateProgressType.SIGCHECK] = _("Verifying");

    STATUS_LOG_STRINGS[UpdateProgressType.DOWNLOADING] = _("Downloaded");
    STATUS_LOG_STRINGS[UpdateProgressType.INSTALLING] = _("Installed");
    STATUS_LOG_STRINGS[UpdateProgressType.UPDATING] = _("Updated");
    STATUS_LOG_STRINGS[UpdateProgressType.CLEANUP] = _("Set up");
    STATUS_LOG_STRINGS[UpdateProgressType.SIGCHECK] = _("Verified");
}

/** @import { UpdateDetail } from "_internal/packagemanager-abstract" */

/**
 * @typedef SelectedState
 * @type {object}
 * @property {Object.<string, UpdateDetail | null | undefined>} selected - (Un)selected updates.
 */

/**
 * @typedef SelectedAction
 * @type {object}
 * @property {"ADD" | "REMOVE" | "RESET"} type - Type of reducer action
 * @property {UpdateDetail[]=} updates - Added/removed items, only used by "ADD" and "REMOVE"
 */

const SelectedContext = React.createContext({ selected: {} });

/**
 * Selected store for conveniently updating the state of selected items.
 * Updating all items naively causes performance issues if there are hundreds of updates
 */
const SelectedStore = props => {
    /**
     * @argument {SelectedState} state
     * @argument {SelectedAction} action
     */
    const reducer = (state, action) => {
        switch (action.type) {
        case "ADD":
            if (action.updates) {
                for (const update of action.updates) {
                    state.selected[update.id] = update;
                }
            }
            break;
        case "REMOVE":
            if (action.updates) {
                for (const update of action.updates) {
                    delete state.selected[update.id];
                }
            }
            break;
        case "RESET":
            state.selected = {};
            break;
        default:
            break;
        }

        return { ...state };
    };

    const [state, dispatch] = React.useReducer(reducer, { selected: {} });

    return <SelectedContext.Provider value={{ state, dispatch }} {...props} />;
};

/**
 * @returns {{state: SelectedState, dispatch: (arg: SelectedAction) => void}}
 */
export const useSelected = () => React.useContext(SelectedContext);

/**
 * @param {{
 *      onClick: (state: SelectedState) => void
 *      securityOnly: boolean
 *      num_updates: number
 * }} props;
 */
const SelectedButton = (props) => {
    const { state, dispatch } = useSelected();
    const {
        onClick,
        securityOnly,
        num_updates,
    } = props;
    const buttonId = securityOnly ? "install-security" : "install-all";

    const buttonText = () => {
        const selectedCount = Object.keys(state.selected).length;
        if (selectedCount === 0 || selectedCount === num_updates) {
            if (securityOnly) {
                return _("Install security updates");
            } else {
                return _("Install all updates");
            }
        } else {
            return `${_("Install selected updates")} (${selectedCount})`;
        }
    };

    return (
        <Button id={buttonId} ouiaId={buttonId} variant="primary" onClick={ () => { onClick(state); dispatch({ type: "RESET" }) } }>
            {buttonText()}
        </Button>
    );
};

/**
 * @param {{
 *      info: UpdateDetail,
 *      updates: UpdateDetail[],
 * }} props;
 */
const SelectedSwitch = (props) => {
    const { state, dispatch } = useSelected();
    const checkboxId = () => `selectable-${props.info.id.replaceAll(';', '-')}`;

    const dispatchChecked = checked => {
        if (checked) {
            dispatch({ type: "ADD", updates: props.updates });
        } else {
            dispatch({ type: "REMOVE", updates: props.updates });
        }
    };

    const isChecked = () => {
        return !!state.selected[props.info.id];
    };

    return (
        <Checkbox
            id={checkboxId()}
            ouiaId={checkboxId()}
            aria-label="select-update-checkbox"
            isChecked={isChecked()}
            onChange={(_event, checked) => dispatchChecked(checked)} />
    );
};

/**
 * @param {{
*      updates: UpdateDetail[],
* }} props;
*/
const WebConsoleRestartWarn = (props) => {
    const { state } = useSelected();

    if (calculateSelected(props.updates, state).findIndex((value) => value.id.includes("cockpit-ws")) === -1)
        return null;

    return (
        <Flex flex={{ default: 'inlineFlex' }} className="cockpit-update-warning">
            <FlexItem>
                <ExclamationTriangleIcon className="ct-icon-exclamation-triangle cockpit-update-warning-icon" />
                <strong className="cockpit-update-warning-text">
                    <span className="pf-v6-screen-reader">{_("Danger alert:")}</span>
                    {_("Web Console will restart")}
                </strong>
            </FlexItem>
            <FlexItem>
                <Popover aria-label="More information popover"
                         bodyContent={_("When the Web Console is restarted, you will no longer see progress information. However, the update process will continue in the background. Reconnect to continue watching the update process.")}>
                    <Button variant="link" isInline>{_("More info...")}</Button>
                </Popover>
            </FlexItem>
        </Flex>
    );
};

/**
 * @param {UpdateDetail[]} allUpdates
 * @param {SelectedState} state
 * @returns {UpdateDetail[]}
 */
function calculateSelected(allUpdates, state) {
    const selected = Object.values(state.selected).filter(update => !!update);

    if (selected.length === 0) {
        return allUpdates;
    } else {
        return selected;
    }
}

function deduplicate(list) {
    return [...new Set(list)].sort();
}

// Insert comma strings in between elements of the list. Unlike list.join(",")
// this does not stringify the elements, which we need to keep as JSX objects.
function insertCommas(list) {
    if (list.length <= 1)
        return list;
    return list.reduce((prev, cur) => [prev, ", ", cur]);
}

// Fedora changelogs are a wild mix of enumerations or not, headings, etc.
// Remove that formatting to avoid an untidy updates overview list
function cleanupChangelogLine(text) {
    if (!text)
        return text;

    // enumerations
    text = text.replace(/^[-* ]*/, "");

    // headings
    text = text.replace(/^=+\s+/, "").replace(/=+\s*$/, "");

    return text.trim();
}

function isRedHatBasedDistribution() {
    const os_release = cockpit.info?.os_release;
    if (!os_release)
        return false;

    const ids = [os_release.ID, ...(os_release.ID_LIKE || "").split(" ")].filter(Boolean);
    return ids.some(id => ["rhel", "fedora", "centos"].includes(id));
}

function renderChangelogWithIssueLinks(text) {
    if (!text)
        return text;

    const issuePattern = /\brhbz#(\d+)(?!\w)|\bRHEL-(\d+)(?![-\w])/g;
    const result = [];
    let lastIndex = 0;
    let match;
    const redHatBased = isRedHatBasedDistribution();

    while ((match = issuePattern.exec(text)) !== null) {
        if (match.index > lastIndex)
            result.push(text.slice(lastIndex, match.index));

        const [, bugzillaId, rhelId] = match;
        let href = null;
        let key = null;

        if (bugzillaId) {
            href = `https://bugzilla.redhat.com/show_bug.cgi?id=${bugzillaId}`;
            key = `rhbz-${bugzillaId}-${match.index}`;
        } else if (rhelId && redHatBased) {
            href = `https://redhat.atlassian.net/browse/RHEL-${rhelId}`;
            key = `RHEL-${rhelId}-${match.index}`;
        } else {
            result.push(match[0]);
            lastIndex = issuePattern.lastIndex;
            continue;
        }

        result.push(
            <a key={key} href={href} rel="noopener noreferrer" target="_blank">
                {match[0]}
            </a>
        );
        lastIndex = issuePattern.lastIndex;
    }

    if (lastIndex === 0)
        return text;

    if (lastIndex < text.length)
        result.push(text.slice(lastIndex));

    return result;
}

// Replace cockpit-wsinstance-https@[long_id] with a shorter string
function shortenCockpitWsInstance(list) {
    return list.map(item => item.startsWith('cockpit-wsinstance-https') ? 'cockpit-wsinstance-https@.' : item);
}

function count_security_updates(updates) {
    let num_security = 0;
    for (const u of updates)
        if (u.severity === Severity.CRITICAL)
            ++num_security;
    return num_security;
}

function isKpatchPackage(name) {
    return name.startsWith("kpatch-patch");
}

function count_kpatch_updates(updates) {
    let num_kpatches = 0;
    for (const u of updates)
        if (isKpatchPackage(u.name))
            ++num_kpatches;
    return num_kpatches;
}

function find_highest_severity(updates) {
    let max = Severity.LOW;
    for (const u of updates)
        if (u.severity > max)
            max = u.severity;
    return max;
}

/**
 * Get appropriate icon for an update severity
 *
 * info: An Severity level
 * secSeverity: If given, further classification of the severity of Severity.CRITICAL from the vendor_urls;
 *              e. g. "critical", see https://access.redhat.com/security/updates/classification
 * Returns: Icon JSX object
 *
 */
function getSeverityIcon(info, secSeverity) {
    let classes = "severity-icon";
    if (secSeverity)
        classes += " severity-" + secSeverity;
    if (info === Severity.CRITICAL)
        return <Icon isInline status="danger"><SecurityIcon aria-label={secSeverity || _("security")} className={classes} /></Icon>;
    else if (info >= Severity.IMPORTANT)
        return <Icon isInline className='pf-m-important'><BugIcon className={classes} aria-label={_("bug fix")} /></Icon>;
    else
        return <Icon isInline status="custom"><EnhancementIcon className={classes} aria-label={_("enhancement")} /></Icon>;
}

function getPageStatusSeverityIcon(severity) {
    if (severity === Severity.CRITICAL)
        return "security";
    else if (severity >= Severity.IMPORTANT)
        return "bug";
    else
        return "enhancement";
}

function getSeverityURL(urls) {
    if (urls.length === 0)
        return null;

    // in ascending severity
    const knownLevels = ["low", "moderate", "important", "critical"];
    let highestIndex = -1;
    let highestURL = null;

    // search URLs for highest valid severity; by all means we expect an update to have at most one, but for paranoia..
    urls.forEach(value => {
        if (value.startsWith("https://access.redhat.com/security/updates/classification/#")) {
            const i = knownLevels.indexOf(value.slice(value.indexOf("#") + 1));
            if (i > highestIndex) {
                highestIndex = i;
                highestURL = value;
            }
        }
    });
    return highestURL;
}

function isSafeUrl(href) {
    try {
        const url = new URL(href);
        return ["https:", "http:"].includes(url.protocol);
    } catch {
        return false;
    }
}

// Link issue references in Markdown text, except for text that is already part of a link.
// markdown-to-jsx renders a node's children inside its next() call, so track link nesting
// here; state.inAnchor is only set while parsing, not while rendering.
let markdownLinkDepth = 0;

function renderMarkdownWithIssueLinks(next, node, _renderChildren, state) {
    if (node.type === RuleType.link || (node.type === RuleType.htmlBlock && node.tag === "a")) {
        markdownLinkDepth++;
        try {
            return next();
        } finally {
            markdownLinkDepth--;
        }
    }

    if (node.type === RuleType.text && markdownLinkDepth === 0) {
        const linked = renderChangelogWithIssueLinks(node.text);
        if (linked !== node.text)
            return <React.Fragment key={state.key}>{linked}</React.Fragment>;
    }

    return next();
}

const markdownOptions = {
    overrides: {
        a: {
            props: {
                rel: "noopener noreferrer",
                target: "_blank",
            },
        },
    },
    forceInline: true,
    renderRule: renderMarkdownWithIssueLinks,
};

function updateItem(info, pkgNames, key, partialUpdates) {
    const bug_urls = (info.bug_urls || []).filter(isSafeUrl);
    const cve_urls = (info.cve_urls || []).filter(isSafeUrl);
    const vendor_urls = (info.vendor_urls || []).filter(isSafeUrl);

    let bugs = null;
    if (bug_urls.length > 0) {
        // we assume a bug URL ends with a number; if not, show the complete URL
        bugs = insertCommas(bug_urls.map(url => (
            <a key={url} rel="noopener noreferrer" target="_blank" href={url}>
                {url.match(/[0-9]+$/) || url}
            </a>)
        ));
    }

    let cves = null;
    if (cve_urls.length > 0) {
        cves = insertCommas(cve_urls.map(url => (
            <a key={url} href={url} rel="noopener noreferrer" target="_blank">
                {url.match(/[^/=]+$/)}
            </a>)
        ));
    }

    let errata = null;
    if (vendor_urls.length > 0) {
        errata = insertCommas(vendor_urls.filter(url => url.indexOf("/errata/") > 0).map(url => (
            <a key={url} href={url} rel="noopener noreferrer" target="_blank">
                {url.match(/[^/=]+$/)}
            </a>)
        ));
        if (!errata.length)
            errata = null; // simpler testing below
    }

    let secSeverityURL = getSeverityURL(vendor_urls);
    const secSeverity = secSeverityURL ? secSeverityURL.slice(secSeverityURL.indexOf("#") + 1) : null;
    const icon = getSeverityIcon(info.severity, secSeverity);
    let type;
    if (info.severity === Severity.CRITICAL) {
        if (secSeverityURL)
            secSeverityURL = <a rel="noopener noreferrer" target="_blank" href={secSeverityURL}>{secSeverity}</a>;
        type = (
            <Tooltip id="tip-severity" content={ secSeverity || _("security") }>
                <span>
                    {icon}
                    { cve_urls.length > 0 && cve_urls.length}
                </span>
            </Tooltip>
        );
    } else {
        const tip = (info.severity >= Severity.IMPORTANT) ? _("bug fix") : _("enhancement");
        type = (
            <Tooltip id="tip-severity" content={tip}>
                <span>
                    {icon}
                    { bug_urls.length > 0 && bug_urls.length }
                </span>
            </Tooltip>
        );
    }

    const pkgList = pkgNames.map((n, index) => (
        <Tooltip key={n.name + n.arch} id="tip-summary" content={n.summary + " (" + n.arch + ")"}>
            <span>{n.name + (index !== (pkgNames.length - 1) ? ", " : "")}</span>
        </Tooltip>)
    );
    const pkgs = pkgList;
    const pkgsTruncated = pkgList.slice(0, 4);

    if (pkgList.length > 4)
        pkgsTruncated.push(<span key="more">…</span>);

    if (pkgNames.some(pkg => isKpatchPackage(pkg.name)))
        pkgsTruncated.push(
            <LabelGroup key={`${key}-kpatches-labelgroup`} className="kpatches-labelgroup">
                {" "}<Badge color="blue">{_("patches")}</Badge>
            </LabelGroup>
        );

    let descriptionFirstLine = (info.description || "").trim();
    if (descriptionFirstLine.indexOf("\n") >= 0)
        descriptionFirstLine = descriptionFirstLine.slice(0, descriptionFirstLine.indexOf("\n"));
    descriptionFirstLine = cleanupChangelogLine(descriptionFirstLine);
    let description;
    if (info.markdown) {
        descriptionFirstLine = <Markdown options={markdownOptions}>{descriptionFirstLine}</Markdown>;
        description = <Markdown options={{ ...markdownOptions, forceInline: false }}>{info.description}</Markdown>;
    } else {
        descriptionFirstLine = renderChangelogWithIssueLinks(descriptionFirstLine);
        description = <div className="changelog">{renderChangelogWithIssueLinks(info.description)}</div>;
    }

    const expandedContent = (
        <Flex justifyContent={{ default: 'justifyContentSpaceBetween' }}>
            <DescriptionList>
                <DescriptionListGroup>
                    <DescriptionListTerm>{_("Packages")}</DescriptionListTerm>
                    <DescriptionListDescription>{pkgs}</DescriptionListDescription>
                </DescriptionListGroup>
                { cves
                    ? <DescriptionListGroup>
                        <DescriptionListTerm>{_("CVE")}</DescriptionListTerm>
                        <DescriptionListDescription>{cves}</DescriptionListDescription>
                    </DescriptionListGroup>
                    : null }
                { secSeverityURL
                    ? <DescriptionListGroup>
                        <DescriptionListTerm>{_("Severity")}</DescriptionListTerm>
                        <DescriptionListDescription className="severity">{secSeverityURL}</DescriptionListDescription>
                    </DescriptionListGroup>
                    : null }
                { errata
                    ? <DescriptionListGroup>
                        <DescriptionListTerm>{_("Errata")}</DescriptionListTerm>
                        <DescriptionListDescription>{errata}</DescriptionListDescription>
                    </DescriptionListGroup>
                    : null }
                { bugs
                    ? <DescriptionListGroup>
                        <DescriptionListTerm>{_("Bugs")}</DescriptionListTerm>
                        <DescriptionListDescription>{bugs}</DescriptionListDescription>
                    </DescriptionListGroup>
                    : null }
            </DescriptionList>
            <Content>{description}</Content>
        </Flex>
    );

    let selectColumn = [];
    if (partialUpdates) {
        selectColumn = [
            { title: <SelectedSwitch info={info} updates={ pkgNames } />, props: { className: "select-update" } },
        ];
    }

    return {
        columns: [
            ...selectColumn,
            { title: pkgsTruncated },
            { title: <TableText wrapModifier="truncate">{info.version}</TableText>, props: { className: "version" } },
            { title: <TableText wrapModifier="nowrap">{type}</TableText>, props: { className: "type" } },
            { title: descriptionFirstLine, props: { className: "changelog" } },
        ],
        props: {
            key,
            className: info.severity === Severity.CRITICAL ? ["error"] : [],
        },
        hasPadding: true,
        expandedContent,
    };
}

const UpdatesList = ({ updates, partialUpdates }) => {
    const combined_updates = [];

    // PackageKit doesn"t expose source package names, so group packages with the same version and changelog
    // create a reverse version+changes → [id] map on iteration
    const sameUpdate = {};
    const packageNames = {};
    for (const u of updates) {
        // did we already see the same version and description? then merge
        const hash = u.version + u.description;
        const seenId = sameUpdate[hash];
        if (seenId) {
            packageNames[seenId].push(u);
        } else {
            // this is a new update
            sameUpdate[hash] = u.id;
            packageNames[u.id] = [u];
            combined_updates.push(u);
        }
    }

    // sort security first
    combined_updates.sort((a, b) => {
        if (a.severity === Severity.CRITICAL && b.severity !== Severity.CRITICAL)
            return -1;
        if (a.severity !== Severity.CRITICAL && b.severity === Severity.CRITICAL)
            return 1;
        return a.name.localeCompare(b.name);
    });

    let selectColumn = [];
    if (partialUpdates) {
        selectColumn = [
            { title: "", props: { hidden: true, 'aria-label': _("Select update") } }
        ];
    }
    return (
        <ListingTable aria-label={_("Available updates")}
                gridBreakPoint='grid-lg'
                columns={[
                    ...selectColumn,
                    { title: _("Name"), props: { width: 40 } },
                    { title: _("Version"), props: { width: 15 } },
                    { title: _("Severity"), props: { width: 15 } },
                    { title: _("Details"), props: { width: 30 } },
                ]}
                rows={combined_updates.map(update => {
                    return updateItem(update,
                                      packageNames[update.id].sort((a, b) => a.name > b.name),
                                      update.id,
                                      partialUpdates,
                    );
                })
                } />
    );
};

const formatPackageId = packageId => {
    const pfields = packageId.split(";");
    return pfields[0] + " " + pfields[1] + " (" + pfields[2] + ")";
};

// actions is a chronological list of { status, packageId } events that happen during applying updates
// status: see STATUS_STRINGS
const ApplyUpdates = ({ transactionProps, actions, rebootAfter, setRebootAfter }) => {
    const remain = transactionProps.remaining_time
        ? timeformat.distanceToNow(new Date().valueOf() + transactionProps.remaining_time * 1000)
        : null;

    let percentage = transactionProps.percentage || 0;
    // PackageKit sets this to 101 initially
    if (percentage > 100)
        percentage = 0;

    // scroll update log to the bottom, if it already is (almost) at the bottom
    const log = document.getElementById("update-log");
    if (log) {
        if (log.scrollHeight - log.clientHeight <= log.scrollTop + 2)
            log.scrollTop = log.scrollHeight;
    }

    const cancelButton = transactionProps.cancel
        ? <Button variant="secondary" onClick={transactionProps.cancel} size="sm">{_("Cancel")}</Button>
        : null;

    if (actions.length === 0 && percentage === 0) {
        return <EmptyStatePanel title={ _("Initializing...") }
                                headingLevel="h5"
                                secondary={cancelButton}
                                loading
        />;
    }

    const lastAction = actions[actions.length - 1];
    // when resuming an upgrade, we did not get any Package signal yet; fall back to LastPackage
    const curPackage = formatPackageId(lastAction?.packageId || transactionProps.last_package || "");
    return (
        <div className="progress-main-view">
            <Grid hasGutter>
                <GridItem span={12}>
                    <div className="progress-description pf-v6-u-display-flex">
                        <Spinner size="md" isInline />
                        <strong>{STATUS_STRINGS[lastAction?.status] || STATUS_STRINGS[UpdateProgressType.UPDATING]}</strong>
                        &nbsp;
                        <Truncate content={curPackage} />
                    </div>
                    <Progress title={remain}
                              aria-label={remain ? _("Time remaining: ") : _("Update progress")}
                              value={percentage}
                              size={ProgressSize.sm}
                              className="pf-v6-u-mb-xs" />
                </GridItem>

                <GridItem span={3}>{cancelButton}</GridItem>

                <GridItem span={12}>
                    <Switch id="reboot-after" isChecked={rebootAfter}
                            label={ _("Reboot after completion") }
                            onChange={setRebootAfter} />
                </GridItem>

                <GridItem span={12} className="update-log">
                    <ExpandableSection toggleText={_("View update log")} onToggle={() => {
                        // always scroll down on expansion
                        const log = document.getElementById("update-log");
                        log.scrollTop = log.scrollHeight;
                    }}>
                        <div id="update-log" className="update-log-content">
                            <table>
                                <tbody>
                                    { actions.slice(0, -1).map((action, i) => (
                                        <tr key={action.packageId + i}>
                                            <th>{STATUS_LOG_STRINGS[action.status] || STATUS_LOG_STRINGS[UpdateProgressType.UPDATING]}</th>
                                            <td>{formatPackageId(action.packageId)}</td>
                                        </tr>)) }
                                </tbody>
                            </table>
                        </div>
                    </ExpandableSection>
                </GridItem>
            </Grid>
        </div>
    );
};

const UpdateSuccess = ({ onIgnore, openServiceRestartDialog, openRebootDialog, restart, manual, reboot, checkRestartAvailable, history }) => {
    if (!checkRestartAvailable) {
        /* tracer is not available any more in RHEL 10; as a special case, if only kpatch and kernel were
         * updated, don't reboot (as that's their whole raison d'être) */
        const pkgs = Object.keys(history[0]?.packages ?? {});
        const only_kpatch = pkgs.filter(p => p.startsWith("kpatch")).length > 0 &&
                            pkgs.filter(p => !p.startsWith("kernel") && !p.startsWith("kpatch")).length === 0;

        const paragraph = only_kpatch ? null : _("Updated packages may require a reboot to take effect.");
        const actions = only_kpatch
            ? <Button id="ignore" variant="primary" onClick={onIgnore}>{_("Continue")}</Button>
            : <>
                <Button id="reboot-system" variant="primary" onClick={openRebootDialog}>{_("Reboot system...")}</Button>
                <Button id="ignore" variant="link" onClick={onIgnore}>{_("Ignore")}</Button>
            </>;

        return (<>
            <EmptyStatePanel icon={RebootingIcon}
                             title={ _("Update was successful") }
                             headingLevel="h5"
                             paragraph={paragraph}
                             secondary={actions} />
            { history[0]?.packages &&
            <div className="flow-list-blank-slate">
                <ExpandableSection toggleText={_("Package information")}>
                    <PackageList packages={history[0].packages} />
                </ExpandableSection>
            </div>
            }
        </>);
    }

    const entries = [];
    if (reboot.length > 0) {
        entries.push({
            columns: [
                {
                    title: <TwoColumnTitle icon={<RebootingIcon />}
                                           str={cockpit.format(cockpit.ngettext("$0 package needs a system reboot",
                                                                                "$0 packages need a system reboot",
                                                                                reboot.length),
                                                               reboot.length)} />
                },
            ],
            props: { key: "reboot", id: "reboot-row" },
            hasPadding: true,
            expandedContent: <TwoColumnContent list={reboot} />,
        });
    }

    if (restart.length > 0) {
        entries.push({
            columns: [
                {
                    title: <TwoColumnTitle icon={<ProcessAutomationIcon />}
                                           str={cockpit.format(cockpit.ngettext("$0 service needs to be restarted",
                                                                                "$0 services need to be restarted",
                                                                                restart.length),
                                                               restart.length)} />
                },
            ],
            props: { key: "service", id: "service-row" },
            hasPadding: true,
            expandedContent: <TwoColumnContent list={restart} />,
        });
    }

    if (manual.length > 0) {
        entries.push({
            columns: [
                {
                    title: <TwoColumnTitle icon={<ProcessAutomationIcon />}
                                           str={_("Some software needs to be restarted manually")} />
                }
            ],
            props: { key: "manual", id: "manual-row" },
            hasPadding: true,
            expandedContent: <TwoColumnContent list={manual} />,
        });
    }

    const showReboot = reboot.length > 0 || manual.length > 0;

    return (<>
        <EmptyStatePanel title={ _("Update was successful") }
            headingLevel="h5"
            secondary={
                <>
                    { entries.length > 0 && <ListingTable aria-label={_("Update Success Table")}
                        columns={[{ title: _("Info") }]}
                        showHeader={false}
                        className="updates-success-table"
                        rows={entries} /> }
                    <div className="update-success-actions">
                        { showReboot && <Button id="reboot-system" variant="primary" onClick={openRebootDialog}>{_("Reboot system...")}</Button> }
                        { restart.length > 0 && <Button id="choose-service" variant={showReboot ? "secondary" : "primary"} onClick={openServiceRestartDialog}>{_("Restart services...")}</Button> }
                        { reboot.length > 0 || restart.length > 0 || manual.length > 0
                            ? <Button id="ignore" variant="link" onClick={onIgnore}>{_("Ignore")}</Button>
                            : <Button id="ignore" variant="primary" onClick={onIgnore}>{_("Continue")}</Button> }
                    </div>
                </>
            } />
        { history[0]?.packages &&
        <div className="flow-list-blank-slate">
            <ExpandableSection toggleText={_("Package information")}>
                <PackageList packages={history[0].packages} />
            </ExpandableSection>
        </div>
        }
    </>);
};

const UpdatesStatus = ({ updates, highestSeverity, timeSinceRefresh, restartPackages, onValueChanged }) => {
    const numUpdates = updates.length;
    const numSecurity = count_security_updates(updates);
    const numRestartServices = restartPackages.daemons.length;
    const numManualSoftware = restartPackages.manual.length;
    const numRebootPackages = restartPackages.reboot.length;
    let lastChecked;
    // PackageKit returns G_MAXUINT if the db was never checked.
    if (timeSinceRefresh !== null && timeSinceRefresh !== 2 ** 32 - 1)
        lastChecked = cockpit.format(_("Last checked: $0"), timeformat.distanceToNow(new Date().valueOf() - timeSinceRefresh * 1000));

    const notifications = [];
    if (numUpdates > 0) {
        if (numUpdates === numSecurity) {
            const stateStr = cockpit.ngettext("$0 security fix available", "$0 security fixes available", numSecurity);
            notifications.push({
                id: "security-updates-available",
                stateStr: cockpit.format(stateStr, numSecurity),
                icon: getSeverityIcon(highestSeverity),
                secondary: <Content id="last-checked" component={ContentVariants.small}>{lastChecked}</Content>
            });
        } else {
            let stateStr = cockpit.ngettext("$0 update available", "$0 updates available", numUpdates);
            if (numSecurity > 0)
                stateStr += cockpit.ngettext(", including $1 security fix", ", including $1 security fixes", numSecurity);
            notifications.push({
                id: "updates-available",
                stateStr: cockpit.format(stateStr, numUpdates, numSecurity),
                icon: getSeverityIcon(highestSeverity),
                secondary: <Content id="last-checked" component={ContentVariants.small}>{lastChecked}</Content>
            });
        }
    } else if (!numRestartServices && !numRebootPackages && !numManualSoftware) {
        notifications.push({
            id: "system-up-to-date",
            stateStr: STATE_HEADINGS.uptodate,
            icon: <CheckIcon color="green" />,
            secondary: <Content id="last-checked" component={ContentVariants.small}>{lastChecked}</Content>
        });
    }

    if (numRebootPackages > 0) {
        const stateStr = cockpit.ngettext("$0 package needs a system reboot", "$0 packages need a system reboot", numRebootPackages);
        notifications.push({
            id: "packages-need-reboot",
            stateStr: cockpit.format(stateStr, numRebootPackages),
            icon: <RebootingIcon />,
            secondary: <Button variant="danger" onClick={() => onValueChanged("showRebootSystemDialog", true)}>
                {_("Reboot system...")}
            </Button>
        });
    }

    if (numRestartServices > 0) {
        const stateStr = cockpit.ngettext("$0 service needs to be restarted", "$0 services need to be restarted", numRestartServices);
        notifications.push({
            id: "services-need-restart",
            stateStr: cockpit.format(stateStr, numRestartServices),
            icon: <ProcessAutomationIcon />,
            secondary: <Button variant="primary" onClick={() => onValueChanged("showRestartServicesDialog", true)}>
                {_("Restart services...")}
            </Button>
        });
    }

    if (numManualSoftware > 0) {
        notifications.push({
            id: "processes-need-restart",
            stateStr: _("Some software needs to be restarted manually"),
            icon: <ProcessAutomationIcon />,
            secondary: <Content component={ContentVariants.small}>{restartPackages.manual.join(", ")}</Content>
        });
    }

    return (<Stack hasGutter>
        { notifications.map(notification => (
            <StackItem key={notification.id}>
                <Flex flexWrap={{ default: 'nowrap' }} id={notification.id}>
                    <FlexItem>
                        {notification.icon}
                    </FlexItem>
                    <FlexItem>
                        <Stack>
                            <StackItem>
                                <Content component={ContentVariants.p}>{notification.stateStr}</Content>
                            </StackItem>
                            <StackItem>
                                { notification.secondary }
                            </StackItem>
                        </Stack>
                    </FlexItem>
                </Flex>
            </StackItem>
        ))}
    </Stack>);
};

class CardsPage extends React.Component {
    constructor() {
        super();
        this.state = {
            autoupdates_backend: undefined,
        };
    }

    componentDidMount() {
        getBackend(this.props.backend).then(b => { this.setState({ autoupdates_backend: b }) });
    }

    render() {
        const cardContents = [];
        let settingsContent = null;
        const statusContent = <Stack hasGutter>
            <UpdatesStatus key="updates-status"
                                updates={this.props.updates}
                                onValueChanged={this.props.onValueChanged}
                                restartPackages={this.props.restartPackages}
                                highestSeverity={this.props.highestSeverity}
                                timeSinceRefresh={this.props.timeSinceRefresh} />
            <KpatchStatus />
        </Stack>;

        if (this.state.autoupdates_backend) {
            settingsContent = <Stack hasGutter>
                <AutoUpdates privileged={this.props.privileged} packagekit_backend={this.props.backend} initial_backend={this.state.autoupdates_backend} />
                {cockpit.info.os_release && cockpit.info.os_release?.ID === "rhel" &&
                <KpatchSettings privileged={this.props.privileged} />
                }
            </Stack>;
        }

        cardContents.push({
            id: "status",
            className: settingsContent !== null ? "ct-card-info" : "",
            title: _("Status"),
            actions: (<Tooltip content={_("Check for updates")}>
                <Button icon={<RedoIcon />} variant="secondary" onClick={this.props.handleRefresh} />
            </Tooltip>),
            body: statusContent,
        });

        if (settingsContent !== null) {
            cardContents.push({
                id: "settings",
                className: "ct-card-info",
                title: _("Settings"),
                body: settingsContent,
            });
        }

        if (this.props.state === "available") { // automatic updates are not tracked by PackageKit, hide history when they are enabled
            cardContents.push({
                id: "available-updates",
                title: _("Available updates"),
                actions: (<div className="pk-updates--header--actions">
                    <WebConsoleRestartWarn updates={this.props.updates} />
                    {this.props.applyKpatches}
                    {this.props.applySecurity}
                    {this.props.applySelected}
                </div>),
                containsList: true,
                body: <UpdatesList updates={this.props.updates} partialUpdates={this.props.partialUpdates} />
            });
        }

        if ((!this.state.autoupdates_backend || !this.state.autoupdates_backend.enabled) && this.props.history.length > 0) { // automatic updates are not tracked by PackageKit, hide history when they are enabled
            cardContents.push({
                id: "update-history",
                title: _("Update history"),
                containsList: true,
                body: <History packagekit={this.props.history} />
            });
        }

        return cardContents.map(card => {
            return (
                <Card key={card.id} className={card.className} id={card.id}>
                    <CardHeader actions={{ actions: card.actions }}>
                        <CardTitle component="h2">{card.title}</CardTitle>
                    </CardHeader>
                    <CardBody className={card.containsList ? "contains-list" : null}>
                        {card.body}
                    </CardBody>
                </Card>
            );
        });
    }
}

class OsUpdates extends React.Component {
    constructor() {
        super();
        this.state = {
            state: "loading",
            errorMessages: [],
            updates: [],
            timeSinceRefresh: null,
            loadPercent: null,
            cockpitUpdate: false,
            haveOsRepo: null,
            applyTransactionProps: {},
            applyActions: [],
            history: [],
            unregistered: false,
            privileged: false,
            autoUpdatesEnabled: undefined,
            restartPackages: { daemons: [], manual: [], reboot: [] },
            checkRestartAvailable: false,
            checkRestartRunning: false,
            showRestartServicesDialog: false,
            showRebootSystemDialog: false,
            rebootAfterSuccess: false,
            partialUpdates: false,
        };
        this.handleLoadError = this.handleLoadError.bind(this);
        this.handleRefresh = this.handleRefresh.bind(this);
        this.loadUpdates = this.loadUpdates.bind(this);
        this.onValueChanged = this.onValueChanged.bind(this);
        this.checkNeedsRestart = this.checkNeedsRestart.bind(this);

        this.packageManager = null;
        this.backend = "";
    }

    onValueChanged(key, value) {
        this.setState({ [key]: value });
    }

    async componentDidMount() {
        this._mounted = true;
        this.checkNeedsRestart();

        superuser.addEventListener("changed", this.handleSuperUserChange);

        // HACK: force usage of PackageKit backend
        this.packageManager = await getPackageManager(true);
        this.backend = await this.packageManager.get_backend();
        const partialUpdates = is_partial_updates_supported(this.backend);
        this.setState({ partialUpdates });

        // check if there is an upgrade in progress already; if so, switch to "applying" state right away
        try {
            const running_update = await this.packageManager.get_running_update({
                on_package: (status, packageId) => this.setState(prevState =>
                    ({ applyActions: [...prevState.applyActions, { status, packageId }] })
                ),
                on_notify: (notify) => this.setState(prevState =>
                    ({ applyTransactionProps: { ...prevState.applyTransactionProps, ...notify } })
                ),
            });

            if (!this._mounted)
                return;

            if (running_update) {
                this.setState({ state: "applying", applyTransactionProps: {}, applyActions: [] });
                this.handleRunningUpdate(running_update.promise);
            } else {
                // no running updates found, proceed to showing available updates
                this.initialLoadOrRefresh();
            }
        } catch (err) {
            this.handleLoadError(err);
        }
    }

    componentWillUnmount() {
        this._mounted = false;
        superuser.removeEventListener("changed", this.handleSuperUserChange);
    }

    handleSuperUserChange = () => {
        this.setState({ privileged: superuser.allowed });
        // get out of error state when switching from unprivileged to privileged
        if (superuser.allowed && this.state.state.indexOf("Error") >= 0)
            this.loadUpdates();
    };

    checkNeedsRestart() {
        this.setState({ checkRestartRunning: true });
        return python.spawn(callTracerScript, undefined, { err: "message", superuser: "require" })
                .then(output => {
                    debug("tracer succeeded, output:", output);
                    const restartPackages = JSON.parse(output);
                    // Filter out duplicates
                    restartPackages.reboot = deduplicate(shortenCockpitWsInstance(restartPackages.reboot));
                    restartPackages.daemons = deduplicate(shortenCockpitWsInstance(restartPackages.daemons));
                    restartPackages.manual = deduplicate(shortenCockpitWsInstance(restartPackages.manual));
                    debug("tracer parsed restartPackages:", JSON.stringify(restartPackages));
                    this.setState({ checkRestartAvailable: true, checkRestartRunning: false, restartPackages });
                })
                .catch((exception, data) => {
                    // tracer not installed or supported (like on Arch)? then fall back to dnf needs-restarting
                    if (exception.message?.includes("ModuleNotFoundError") ||
                        exception.message?.includes("UnsupportedDistribution")) {
                        debug('tracer not installed:', JSON.stringify(exception), "trying dnf needs-restarting");
                        return this.checkDnfNeedsRestarting();
                    }

                    // log the error except for some common cases: polkit does not allow it
                    if (exception.problem !== "access-denied" &&
                        // or unprivileged session
                        exception.problem !== "authentication-failed" &&
                        // or the session goes away while checking
                        exception.problem !== "terminated")
                        console.error(`Tracer failed: "${JSON.stringify(exception)}", data: "${JSON.stringify(data)}"`);
                    else
                        debug('tracer failed for uninteresting reason:', JSON.stringify(exception));

                    // When tracer fails, act like it's not available (demand reboot after every update)
                    this.setState({
                        checkRestartAvailable: false,
                        checkRestartRunning: false,
                        restartPackages: { reboot: [], daemons: [], manual: [] },
                    });
                });
    }

    checkDnfNeedsRestarting() {
        const restartPackages = { reboot: [], daemons: [], manual: [] };

        // needs-restarting has no machine-readable API: https://issues.redhat.com/browse/RHEL-56139
        // dnf5 needs-restarting also has no machine-readable API: https://github.com/rpm-software-management/dnf5/issues/2341
        // --exclude-services was added much later, so check that first
        return cockpit.spawn(["dnf", "needs-restarting", "--exclude-services"], { err: "message", superuser: "require" })
                .then(outManual => {
                    debug("dnf needs-restarting --exclude-services succeeded:", outManual);
                    // format: "pid : argv", e.g. "1234 : mydaemon 3600"
                    outManual.trim()
                            .split("\n")
                            // HACK: https://issues.redhat.com/browse/RHEL-84657
                            .filter(line => line.match(/^\d+ : /))
                            .forEach(line => !line || restartPackages.manual.push(line));

                    return Promise.allSettled([
                        cockpit.spawn(["dnf", "needs-restarting", "--services"], { err: "message", superuser: "require" }),
                        // we can't get stdout for a failing process, thus needs script
                        cockpit.script("! dnf needs-restarting --reboothint", undefined, { err: "message", superuser: "require" }),
                    ])
                            .then(([serviceResult, rebootResult]) => {
                                // --services format: one unit name per line
                                if (serviceResult.status === 'fulfilled') {
                                    debug("dnf needs-restarting --services succeeded:", serviceResult.value);
                                    serviceResult.value.trim()
                                            .split("\n")
                                            // HACK: https://issues.redhat.com/browse/RHEL-84657
                                            .filter(line => line.endsWith(".service"))
                                            .forEach(line => restartPackages.daemons.push(line));
                                } else {
                                    console.error("dnf needs-restarting --services failed:", JSON.stringify(serviceResult.reason));
                                }

                                // --reboothint format: "  * kernel-rt" plus header/footer; exit nonzero iff reboot required, inverted above
                                if (rebootResult.status === 'fulfilled') {
                                    debug("dnf needs-restarting --reboothint exited nonzero, wants reboot:", rebootResult.value);
                                    rebootResult.value.split("\n").forEach(line => {
                                        if (line.startsWith("  * "))
                                            restartPackages.reboot.push(line.substring(4));
                                    });
                                } else {
                                    debug("dnf needs-restarting --reboothint exited zero, no reboot");
                                }

                                debug("dnf needs-restarting parsed packages:", JSON.stringify(restartPackages));
                                this.setState({ checkRestartAvailable: true, checkRestartRunning: false, restartPackages });
                            });
                })
                .catch(ex => {
                    // log the error except for some common cases: no dnf
                    if (ex.problem !== "not-found" &&
                        // plugin does not support --exclude-services
                        !ex.message.includes("usage:") &&
                        // polkit does not allow it
                        ex.problem !== "access-denied" &&
                        // or unprivileged session
                        ex.problem !== "authentication-failed" &&
                        // or the session goes away while checking
                        ex.problem !== "terminated")
                        console.error("dnf needs-restarting failed:", ex.toString());

                    // act like it's not available (demand reboot after every update)
                    this.setState({ checkRestartAvailable: false, checkRestartRunning: false, restartPackages });
                });
    }

    handleLoadError(ex) {
        console.warn("loading available updates failed:", JSON.stringify(ex));

        if (!this._mounted)
            return;

        if (ex.problem === "not-found" || ex.name?.includes("DBus.Error.ServiceUnknown"))
            ex = _("PackageKit is not installed");
        this.setState(prevState => ({ errorMessages: [...prevState.errorMessages, ex.detail || ex.message || ex], state: "loadError" }));
    }

    loadUpdates() {
        let cockpitUpdate = false;

        this.setState({ state: "loading" });

        // check if there is an available version of coreutils; this is a heuristics for unregistered RHEL
        // systems to see if they need a subscription to get "proper" OS updates
        this.packageManager.is_available(["coreutils"])
                .then((have_coreutils) => this.setState({ haveOsRepo: have_coreutils }),
                      ex => console.warn("Resolving coreutils failed:", JSON.stringify(ex)))
                .then(() => this.packageManager.get_updates(true, null).then(updates => {
                    debug("GetUpdates result:", updates);
                    if (updates.length) {
                        for (const update of updates) {
                            if (update.name === 'cockpit-ws') {
                                cockpitUpdate = true;
                            // Arch Linux has no cockpit-ws package
                            } else if (update.name === 'cockpit' && this.backend === "alpm") {
                                cockpitUpdate = true;
                            }
                        }
                        this.setState({ updates, cockpitUpdate, state: "available" });
                    } else {
                        this.setState({ updates: [], state: "uptodate" });
                    }
                    this.loadHistory();
                }))
                .catch(this.handleLoadError);
    }

    async loadHistory() {
        try {
            const history = await this.packageManager.get_history();
            this.setState({ history });
        } catch (exc) {
            console.warn("Failed to load old transactions (history):", exc);
        }
    }

    initialLoadOrRefresh() {
        watchRedHatSubscription(registered => this.setState({ unregistered: !registered }));

        cockpit.addEventListener("visibilitychange", () => {
            if (!cockpit.hidden)
                this.loadOrRefresh(false);
        });

        if (!cockpit.hidden)
            this.loadOrRefresh(true);
        else
            this.loadUpdates();
    }

    async loadOrRefresh(always_load) {
        try {
            const seconds = await this.packageManager.get_last_refresh_time();
            this.setState({ timeSinceRefresh: seconds });

            // automatically trigger refresh for ≥ 1 day or if never refreshed
            if (seconds >= 24 * 3600 || seconds < 0)
                this.handleRefresh();
            else if (always_load)
                this.loadUpdates();
        } catch (exc) {
            this.handleLoadError(exc);
        }
    }

    async handleRunningUpdate(promise) {
        try {
            this.setState({ applyTransactionProps: {}, applyActions: [] });
            const status = await promise;

            switch (status) {
            case TransactionExitStatus.SUCCESS:
                this.setState({ state: "loading", loadPercent: null });
                await this.loadHistory();

                if (this.state.checkRestartAvailable) {
                    await this.checkNeedsRestart();
                }

                this.setState({ state: "updateSuccess", loadPercent: null });
                break;
            case TransactionExitStatus.CANCELLED:
                if (this.state.checkRestartAvailable) {
                    this.setState({ state: "loading", loadPercent: null });
                    this.checkNeedsRestart();
                }

                this.loadUpdates();
                break;
            default:
                this.setState({
                    applyTransactionProps: {},
                    applyActions: [],
                    errorMessages: [],
                    state: "updateError",
                });
                break;
            }
        } catch (ex) {
            this.setState({
                applyTransactionProps: {},
                applyActions: [],
                errorMessages: ex instanceof UpdateError ? ex.messages : [ex.message],
                state: "updateError",
            });
        }
    }

    /**
     * @param {SelectedState=} selected
     */
    applyUpdates(type, selected) {
        let updates = [...this.state.updates];
        if (type === UPDATES.SECURITY)
            updates = updates.filter(update => update.severity === Severity.CRITICAL);
        if (type === UPDATES.KPATCHES) {
            updates = updates.filter(update => isKpatchPackage(update.name));
        }
        if (type === UPDATES.SELECTED && selected) {
            updates = calculateSelected(updates, selected);
        }

        this.setState({ state: "applying", applyTransactionProps: {}, applyActions: [] });

        this.handleRunningUpdate(
            this.packageManager.update_packages(updates, {
                on_package: (status, packageId) => this.setState(prevState =>
                    ({ applyActions: [...prevState.applyActions, { status, packageId }] })
                ),
                on_notify: (notify) => this.setState(prevState =>
                    ({ applyTransactionProps: { ...prevState.applyTransactionProps, ...notify } })
                ),
            })
        );
    }

    renderContent() {
        let applySecurity;
        let applyKpatches;
        let applySelected;

        /* On unregistered RHEL systems we need some heuristics: If the "main" OS repos (which provide coreutils) require
         * a subscription, then point this out and don't show available updates, even if there are some auxiliary
         * repositories enabled which don't require subscriptions. But there are a lot of cases (cloud repos, nightly internal
         * repos) which don't need a subscription, there it would just be confusing */
        if (this.state.unregistered && this.state.haveOsRepo === false) {
            page_status.set_own({
                type: "warning",
                title: _("Not registered"),
                details: {
                    link: "subscriptions",
                }
            });

            return <EmptyStatePanel
                title={_("This system is not registered")}
                headingLevel="h5"
                paragraph={ _("To get software updates, this system needs to be registered with Red Hat, either using the Red Hat Customer Portal or a local subscription server.") }
                icon={ExclamationCircleIcon}
                action={ _("Register…") }
                onAction={ () => cockpit.jump("/subscriptions", cockpit.transport.host) }
            />;
        }

        switch (this.state.state) {
        case "loading":
        case "refreshing":
        case "locked":
            page_status.set_own({
                type: null,
                title: _("Checking for package updates..."),
                details: {
                    link: false,
                    pficon: "spinner",
                }
            });

            if (this.state.loadPercent)
                return <Progress value={this.state.loadPercent} title={STATE_HEADINGS[this.state.state]} />;
            else
                return <EmptyStatePanel loading title={ _("Checking software status")}
                                        headingLevel="h5"
                                        paragraph={STATE_HEADINGS[this.state.state]}
                />;

        case "available":
        {
            const num_updates = this.state.updates.length;
            const num_security_updates = count_security_updates(this.state.updates);
            const num_kpatches = count_kpatch_updates(this.state.updates);
            const highest_severity = find_highest_severity(this.state.updates);

            applySelected = <SelectedButton
                num_updates={num_updates}
                securityOnly={num_updates === num_security_updates}
                onClick={(items) => this.applyUpdates(UPDATES.SELECTED, items)} />;

            if (num_security_updates > 0 && num_updates > num_security_updates) {
                applySecurity = (
                    <Button id="install-security" variant="secondary" onClick={ () => this.applyUpdates(UPDATES.SECURITY) }>
                        {_("Install security updates")}
                    </Button>);
            }

            if (num_kpatches > 0) {
                applyKpatches = (
                    <Button id="install-kpatches" variant="secondary" onClick={ () => this.applyUpdates(UPDATES.KPATCHES) }>
                        {_("Install kpatch updates")}
                    </Button>);
            }

            let text;
            if (highest_severity === Severity.CRITICAL)
                text = _("Security updates available");
            else if (highest_severity >= Severity.IMPORTANT)
                text = _("Bug fix updates available");
            else if (highest_severity >= Severity.LOW)
                text = _("Enhancement updates available");
            else
                text = _("Updates available");

            page_status.set_own({
                type: num_security_updates > 0 ? "warning" : "info",
                title: text,
                details: {
                    pficon: getPageStatusSeverityIcon(highest_severity)
                }
            });

            return (
                <>
                    <PageSection hasBodyWrapper={false}>
                        <Gallery className='ct-cards-grid' hasGutter>
                            <CardsPage handleRefresh={this.handleRefresh}
                                       applySecurity={applySecurity}
                                       applySelected={applySelected}
                                       applyKpatches={applyKpatches}
                                       highestSeverity={highest_severity}
                                       onValueChanged={this.onValueChanged}
                                       backend={this.backend}
                                       {...this.state} />
                        </Gallery>
                    </PageSection>
                    { this.state.showRestartServicesDialog &&
                        <RestartServicesDialog
                            restartPackages={this.state.restartPackages}
                            close={() => this.setState({ showRestartServicesDialog: false })}
                            state={this.state.state}
                            checkNeedsRestart={this.checkNeedsRestart}
                            onValueChanged={delta => this.setState(delta)}
                            loadUpdates={this.loadUpdates} />
                    }
                    { this.state.showRebootSystemDialog &&
                        <ShutdownModal onClose={() => this.setState({ showRebootSystemDialog: false })} />
                    }
                </>
            );
        }

        case "loadError":
        case "updateError":
            page_status.set_own({
                type: "error",
                title: STATE_HEADINGS[this.state.state],
            });
            return (
                <Stack>
                    <EmptyStatePanel title={ STATE_HEADINGS[this.state.state] }
                                    icon={ ExclamationCircleIcon }
                                    paragraph={
                                        <Content component={ContentVariants.p}>
                                            {_("Please resolve the issue and reload this page.")}
                                        </Content>
                                    }
                    />
                    <CodeBlock className='pf-v6-u-mx-auto error-log'>
                        <CodeBlockCode>
                            {this.state.errorMessages
                                    .filter((m, index) => index === 0 || m !== this.state.errorMessages[index - 1])
                                    .map(m => <span key={m}>{m}</span>)}
                        </CodeBlockCode>
                    </CodeBlock>
                </Stack>
            );

        case "applying":
            page_status.set_own(null);
            return <ApplyUpdates transactionProps={this.state.applyTransactionProps}
                                 actions={this.state.applyActions}
                                 rebootAfter={this.state.rebootAfterSuccess}
                                 setRebootAfter={ (_event, enabled) => this.setState({ rebootAfterSuccess: enabled }) }
            />;

        case "updateSuccess": {
            if (this.state.rebootAfterSuccess) {
                this.setState({ state: "restart" });
                cockpit.spawn(["shutdown", "--reboot", "now"], { superuser: "require" });
                return null;
            }

            let warningTitle;
            if (!this.state.checkRestartAvailable) {
                warningTitle = _("Reboot recommended");
            } else {
                if (this.state.restartPackages.reboot.length > 0)
                    warningTitle = cockpit.ngettext("A package needs a system reboot for the updates to take effect:",
                                                    "Some packages need a system reboot for the updates to take effect:",
                                                    this.state.restartPackages.reboot.length);
                else if (this.state.restartPackages.daemons.length > 0)
                    warningTitle = cockpit.ngettext("A service needs to be restarted for the updates to take effect:",
                                                    "Some services need to be restarted for the updates to take effect:",
                                                    this.state.restartPackages.daemons.length);
                else if (this.state.restartPackages.manual.length > 0)
                    warningTitle = _("Some software needs to be restarted manually");
            }

            if (warningTitle) {
                page_status.set_own({
                    type: "warning",
                    title: warningTitle
                });
            }

            return (
                <>
                    <UpdateSuccess onIgnore={this.loadUpdates}
                        openServiceRestartDialog={() => this.setState({ showRestartServicesDialog: true })}
                        openRebootDialog={() => this.setState({ showRebootSystemDialog: true })}
                        restart={this.state.restartPackages.daemons}
                        manual={this.state.restartPackages.manual}
                        reboot={this.state.restartPackages.reboot}
                        checkRestartAvailable={this.state.checkRestartAvailable}
                        history={this.state.history} />
                    { this.state.showRebootSystemDialog &&
                        <ShutdownModal onClose={() => this.setState({ showRebootSystemDialog: false })} />
                    }
                    { this.state.showRestartServicesDialog &&
                        <RestartServicesDialog restartPackages={this.state.restartPackages}
                            close={() => this.setState({ showRestartServicesDialog: false })}
                            state={this.state.state}
                            checkNeedsRestart={this.checkNeedsRestart}
                            onValueChanged={delta => this.setState(delta)}
                            loadUpdates={this.loadUpdates} />
                    }
                </>
            );
        }

        case "restart":
            page_status.set_own(null);
            return <EmptyStatePanel loading title={ _("Restarting") }
                                    headingLevel="h5"
                                    paragraph={ _("Your server will close the connection soon. You can reconnect after it has restarted.") }
            />;

        case "uptodate":
        {
            page_status.set_own({
                title: STATE_HEADINGS[this.state.state],
                details: {
                    link: false,
                    pficon: "check",
                }
            });

            return (
                <PageSection hasBodyWrapper={false}>
                    <Gallery className='ct-cards-grid' hasGutter>
                        <CardsPage onValueChanged={this.onValueChanged} handleRefresh={this.handleRefresh} backend={this.backend} {...this.state} />
                    </Gallery>
                    { this.state.showRestartServicesDialog &&
                    <RestartServicesDialog restartPackages={this.state.restartPackages}
                                     close={() => this.setState({ showRestartServicesDialog: false })}
                                     state={this.state.state}
                                     checkNeedsRestart={this.checkNeedsRestart}
                                     onValueChanged={delta => this.setState(delta)}
                                     loadUpdates={this.loadUpdates} />
                    }
                    { this.state.showRebootSystemDialog &&
                    <ShutdownModal onClose={() => this.setState({ showRebootSystemDialog: false })} />
                    }
                </PageSection>
            );
        }

        default:
            page_status.set_own(null);
            return null;
        }
    }

    handleRefresh() {
        this.setState({ state: "refreshing", loadPercent: null });
        this.packageManager.refresh(true, data => this.setState({ loadPercent: data.percentage }))
                .then(() => {
                    if (this._mounted === false)
                        return;

                    this.setState({ timeSinceRefresh: 0 });
                    this.loadUpdates();
                })
                .catch(this.handleLoadError);
    }

    render() {
        let content = this.renderContent();
        if (!["available", "uptodate"].includes(this.state.state))
            content = <PageSection hasBodyWrapper={false}>{content}</PageSection>;

        return (
            <WithDialogs>
                <Page className="pf-m-no-sidebar">
                    {content}
                </Page>
            </WithDialogs>
        );
    }
}

document.addEventListener("DOMContentLoaded", async () => {
    init();

    try {
        await cockpit.init();
    } catch (exp) {
        /* Remove this when every beiboot scenario has Cockpit 336 */
        if (exp.problem === 'not-supported') {
            const os_release = await read_os_release();
            cockpit.info.os_release = os_release;
        }
    }

    const root = createRoot(document.getElementById('app'));
    root.render(
        <SelectedStore>
            <OsUpdates />
        </SelectedStore>
    );
});