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import { ChevronDown, ExternalLink, LogOut } from "lucide-react";
import { type ReactNode, useEffect, useRef, useState } from "react";
import { useIsMobile } from "../../hooks/useIsMobile";
import { cn } from "../../lib/utils";
import {
type NavActionId,
type NavBadges,
groupForPath,
type ResolvedEntry,
type ResolvedGroup,
type ResolvedItem,
resolveActiveHref,
} from "./nav-config";
/**
* THE INDEX RED RULE.
*
* Index red marks the current item as a 3px inset bar and essentially nothing
* else — never a filled block, which spends its scarcity. It is never used for
* state (a status is a printed code in status ink; see the status primitives).
*
* `w-0.75` is 3px on the spacing scale (0.25rem × 0.75) and `secondary-500`
* is the index-red token — #D23A1F in `@interioring/design-system`, still the
* legacy sage until `styles/earthy-legacy.css` is deleted, which is the
* reskin. Both constants live here so a grep for `secondary-` under
* `components/layout/` returns exactly these two lines: the rail/tile marker
* and the bottom-nav slot marker.
*/
export const INDEX_MARK =
"before:absolute before:inset-y-0 before:left-0 before:w-0.75 before:bg-secondary-500 before:content-['']";
/** The same 3px bar on the top edge, for the mobile bottom-nav slot. */
export const INDEX_MARK_TOP =
"before:absolute before:inset-x-0 before:top-0 before:h-0.75 before:bg-secondary-500 before:content-['']";
/**
* A `.label`: caps, tabular, tight. The Job Book's section heads and counts.
* (The design world's 620 weight and 80% width are Anek Latin axes, which the
* portal now ships — phase 2.6. This is still the Tailwind scale rather than
* the `.label` ramp class: switching the rail onto the two axes moves every
* row's metrics and wants its own visual pass.)
*/
const LABEL = "text-xs font-semibold uppercase tracking-wide tabular-nums";
/**
* Rows are the dense 32px tier, with the 44px floor kept ONLY under
* `@media (pointer: coarse)` — a mouse does not need a 44px nav row, and
* spending 12px of vertical rhythm on one is how the old rail stopped fitting
* on a screen.
*/
function rowClass(opts: { active: boolean; indent: boolean }): string {
return cn(
"group relative flex min-h-8 w-full items-center gap-2 px-3.5 text-left text-sm transition-colors",
"pointer-coarse:min-h-11",
"focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary-500",
// Rows TINT on hover: ink at low alpha, so one value is right on every
// ground in both themes. The −3px lift is reserved for draggable things.
"hover:bg-foreground-default/7 hover:text-foreground-default",
opts.indent && "pl-6",
opts.active
? cn(
"bg-foreground-default/7 font-semibold text-foreground-default",
INDEX_MARK,
)
: "text-foreground-muted",
);
}
/** A count: `.label` tabular, right-aligned, NO PILL. */
function RowCount({ count }: { count: number }) {
return (
<span className={cn(LABEL, "ml-auto text-inherit")}>
{count > 99 ? "99+" : count}
</span>
);
}
type RailRowProps = {
item: ResolvedItem;
active: boolean;
count?: number;
indent: boolean;
onNavigate: () => void;
onAction: (action: NavActionId) => void;
};
/**
* The ONE row renderer.
*
* `sidebar.tsx` rendered a nav row six times over — a data-driven map plus
* five hand-written one-offs (Social Studio, Admin Panel, Marketplace,
* Feedback, Notifications), each with its own copy of the active/hover/badge
* classes, and `admin-sidebar.tsx` had two more. All of it is this function.
* Three element shapes are unavoidable (an internal link, an external anchor
* and a button are different elements) but there is one class function and one
* index bar.
*/
function RailRow({
item,
active,
count,
indent,
onNavigate,
onAction,
}: RailRowProps) {
const className = rowClass({ active, indent });
const label = <span className="truncate">{item.name}</span>;
const badge =
count !== undefined && count > 0 ? <RowCount count={count} /> : null;
if (item.kind === "action") {
return (
<button
type="button"
className={className}
onClick={() => {
onNavigate();
onAction(item.action);
}}
>
{label}
{badge}
</button>
);
}
if (item.kind === "external") {
return (
<a
href={item.href}
target="_blank"
rel="noopener noreferrer"
className={className}
onClick={onNavigate}
>
{label}
<ExternalLink
className="ml-auto size-3.5 flex-none text-foreground-subtle"
aria-hidden="true"
/>
<span className="sr-only">(opens in a new tab)</span>
</a>
);
}
return (
<Link
to={item.href}
onClick={onNavigate}
aria-current={active ? "page" : undefined}
className={className}
>
{label}
{badge}
</Link>
);
}
/** A hairline. Not a box. */
function RailDivider() {
return (
<hr className="mx-3.5 my-1 h-0 border-0 border-t border-border-default" />
);
}
/**
* Which groups are folded is resolved in two layers: an explicit choice the
* user made by clicking a head (remembered across visits), and underneath it
* the group that owns the current page. Only the choices are stored — the
* active group is DERIVED — so a week of browsing does not slowly re-expand
* the whole rail. This is the one thing the old admin rail got right; it is
* carried over verbatim in behaviour.
*/
type GroupChoices = Record<string, boolean>;
function readChoices(storageKey: string): GroupChoices {
try {
const raw = localStorage.getItem(storageKey);
const parsed: unknown = raw ? JSON.parse(raw) : {};
return parsed && typeof parsed === "object" ? (parsed as GroupChoices) : {};
} catch {
return {};
}
}
function writeChoices(storageKey: string, choices: GroupChoices): void {
try {
localStorage.setItem(storageKey, JSON.stringify(choices));
} catch {
// Private mode or storage disabled: the rail still folds, it just stops
// remembering.
}
}
/** Initials for the footer identity block. Two words at most. */
export function initialsOf(name: string | null | undefined): string {
const words = (name ?? "").trim().split(/\s+/).filter(Boolean).slice(0, 2);
if (words.length === 0) return "?";
return words.map((word) => word.charAt(0).toUpperCase()).join("");
}
/** A row's identity, for React keys. */
function itemKey(item: ResolvedItem): string {
return item.kind === "action" ? item.action : item.href;
}
/**
* Keys for a flat list that includes dividers, which have no identity of
* their own: a divider is named after the row above it, so the key is stable
* across re-renders and across role changes (an array index is neither).
*/
function keyedEntries(
entries: ResolvedEntry[],
): { key: string; entry: ResolvedEntry }[] {
let previous = "top";
return entries.map((entry) => {
if (entry.kind === "divider") {
return { key: `divider-after-${previous}`, entry };
}
previous = entry.kind === "group" ? entry.name : itemKey(entry);
return { key: previous, entry };
});
}
const slug = (value: string) => value.toLowerCase().replace(/[^a-z0-9]+/g, "-");
export type NavRailIdentity = {
name: string;
/** The second line: `Owner · Live`, `Platform admin`. */
meta: string;
};
export type NavRailProps = {
/** Already role-resolved — see `resolveNav`. */
entries: ResolvedEntry[];
currentPath: string;
badges?: NavBadges;
/** Where the folds are remembered. One key per rail. */
storageKey: string;
ariaLabel: string;
identity: NavRailIdentity;
onSignOut: () => void;
onAction?: (action: NavActionId) => void;
/** Drawer state. On `lg` and up the rail is static and always visible. */
isOpen: boolean;
onClose: () => void;
/** Rendered above the footer — push/install prompts, and nothing else. */
children?: ReactNode;
};
export function NavRail({
entries,
currentPath,
badges,
storageKey,
ariaLabel,
identity,
onSignOut,
onAction,
isOpen,
onClose,
children,
}: NavRailProps) {
const railRef = useRef<HTMLDivElement>(null);
const activeHref = resolveActiveHref(entries, currentPath);
const activeGroup = groupForPath(entries, currentPath);
const [choices, setChoices] = useState<GroupChoices>(() =>
readChoices(storageKey),
);
// Folding exists to make the DESKTOP rail fit on one screen. On a phone the
// drawer covers the screen anyway, and a fold there only adds a tap before
// every destination — so the drawer always shows everything.
const isMobile = useIsMobile();
// Arriving in a group you had folded drops that one choice, so the page you
// are on is never hidden. Other choices are untouched.
useEffect(() => {
if (!activeGroup) return;
setChoices((previous) => {
if (previous[activeGroup] !== false) return previous;
const { [activeGroup]: _dropped, ...rest } = previous;
return rest;
});
}, [activeGroup]);
useEffect(() => {
writeChoices(storageKey, choices);
}, [storageKey, choices]);
useEffect(() => {
if (!isOpen) return;
const onKeyDown = (event: KeyboardEvent) => {
if (event.key === "Escape") onClose();
};
document.addEventListener("keydown", onKeyDown);
return () => document.removeEventListener("keydown", onKeyDown);
}, [isOpen, onClose]);
// Focus the first destination when the drawer opens.
useEffect(() => {
if (!isOpen) return;
railRef.current?.querySelector<HTMLAnchorElement>("nav a")?.focus();
}, [isOpen]);
const counts: NavBadges = badges ?? {};
const isGroupOpen = (group: ResolvedGroup): boolean => {
const choice = choices[group.name];
if (choice !== undefined) return choice;
// Sections stand open; a submenu (`Settings ▾`) stays shut until it owns
// the page, because its five rows are not the daily work.
return group.style === "section" || group.name === activeGroup;
};
const toggleGroup = (group: ResolvedGroup) =>
setChoices((previous) => ({
...previous,
[group.name]: !isGroupOpen(group),
}));
const countFor = (item: ResolvedItem): number | undefined =>
item.kind === "action" || item.kind === "external" || !item.badge
? undefined
: counts[item.badge];
const renderItem = (item: ResolvedItem, indent: boolean) => (
<RailRow
key={itemKey(item)}
item={item}
active={item.kind === "link" && item.href === activeHref}
count={countFor(item)}
indent={indent}
onNavigate={onClose}
onAction={(action) => onAction?.(action)}
/>
);
const renderGroup = (group: ResolvedGroup) => {
const open = isMobile || isGroupOpen(group);
const listId = `nav-rail-group-${slug(group.name)}`;
const rolledUp = group.items.reduce(
(total, item) => total + (countFor(item) ?? 0),
0,
);
const isSection = group.style === "section";
return (
<div key={group.name}>
<button
type="button"
onClick={() => toggleGroup(group)}
aria-expanded={open}
aria-controls={listId}
data-testid={`nav-rail-group-${group.name}`}
className={
isSection
? cn(
LABEL,
"flex min-h-8 w-full items-center gap-1.5 px-3.5 pt-1.5 pb-0.5 text-left text-foreground-subtle transition-colors",
"pointer-coarse:min-h-11",
"hover:text-foreground-default focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-primary-500",
group.name === activeGroup && "text-foreground-default",
)
: rowClass({ active: false, indent: false })
}
>
<span className="truncate">{group.name}</span>
<span className="ml-auto flex items-center gap-1.5">
{/* Folded, the group's counts roll up to its head, so a fold
never hides the fact that something needs attention. */}
{!open && rolledUp > 0 && <span className={LABEL}>{rolledUp}</span>}
<ChevronDown
aria-hidden="true"
className={cn(
"size-3.5 flex-none text-foreground-subtle transition-transform duration-200",
!open && "-rotate-90",
)}
/>
</span>
{!open && (
<span className="sr-only">
collapsed, {group.items.length} items
{rolledUp > 0 ? `, ${rolledUp} need attention` : ""}
</span>
)}
</button>
<div id={listId} hidden={!open}>
{group.items.map((item) => renderItem(item, isSection))}
</div>
</div>
);
};
return (
<div
ref={railRef}
className={cn(
// 232px — the rail width in the mockup (`--rail-w`).
"fixed inset-y-0 left-0 z-50 flex w-58 flex-col border-r border-border-default bg-background-subtle transition-transform duration-300 ease-in-out lg:static lg:translate-x-0",
isOpen ? "translate-x-0" : "-translate-x-full",
)}
>
<nav
aria-label={ariaLabel}
className="flex flex-1 flex-col overflow-y-auto py-2"
>
{keyedEntries(entries).map(({ key, entry }) => {
if (entry.kind === "divider") return <RailDivider key={key} />;
if (entry.kind === "group") return renderGroup(entry);
return renderItem(entry, false);
})}
<div className="flex-1" />
{children}
</nav>
{/* The footer identity block: initials, name, `Owner · Live`. */}
<div className="border-t border-border-default px-3.5 py-3">
<div className="flex items-center gap-2">
<span
aria-hidden="true"
className={cn(
LABEL,
"flex size-8 flex-none items-center justify-center rounded-full bg-primary-100 text-primary-700",
)}
>
{initialsOf(identity.name)}
</span>
<span className="min-w-0 flex-1">
<span className="block truncate text-sm font-medium text-foreground-default">
{identity.name}
</span>
<span className={cn(LABEL, "block truncate text-foreground-muted")}>
{identity.meta}
</span>
</span>
<button
type="button"
onClick={onSignOut}
title="Sign out"
className="flex size-6 flex-none items-center justify-center text-foreground-subtle transition-colors hover:text-foreground-default pointer-coarse:size-11"
>
<LogOut className="size-4" aria-hidden="true" />
<span className="sr-only">Sign out</span>
</button>
</div>
</div>
</div>
);
}
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