Press n or j to go to the next uncovered block, b, p or k for the previous block.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 | /**
* SessionNav -- vertical sidebar navigation for the Sessions monitor.
*
* @module
*/
import { useCallback, useMemo, useRef, type JSX, type KeyboardEvent } from "react";
import { Circle } from "lucide-react";
import { ICON_XS } from "../../utils/iconSize.js";
import { useMatch } from "react-router";
import type { Environment, Session } from "../../hooks/types.js";
import { sessionUrl, useAppNavigate } from "../../utils/navigation.js";
import { SectionHeader } from "../display/SectionHeader.js";
import { describeSessionStatus, groupSessionsByEnvironment } from "../sessions/sessionsView.js";
import styles from "./SessionNav.module.scss";
/** CSS custom-property names for each status tone. */
const TONE_COLORS: Record<string, string> = {
running: "var(--accent-green)",
idle: "var(--accent-blue)",
pending: "var(--text-tertiary)",
success: "var(--accent-green)",
error: "var(--accent-red)",
paused: "var(--accent-yellow)",
neutral: "var(--text-tertiary)",
};
/** Props for the SessionNav component. */
export interface SessionNavProps {
/** Sessions to list in the nav. */
sessions: Session[];
/** Environments, used to resolve display names for group headers. */
environments: Environment[];
}
/** Vertical nav rail listing sessions grouped by environment, with status dots. */
export function SessionNav({ sessions, environments }: SessionNavProps): JSX.Element {
const navigate = useAppNavigate();
const tabListRef = useRef<HTMLElement>(null);
const detailMatch = useMatch("/sessions/:sessionId");
const activeId = detailMatch?.params.sessionId;
const groups = useMemo(
() => groupSessionsByEnvironment(sessions, environments),
[sessions, environments],
);
const flatSessions = useMemo(() => groups.flatMap((g) => g.sessions), [groups]);
const activeInList = activeId && flatSessions.some((s) => s.id === activeId);
const focusableId =
(activeInList ? activeId : undefined) ??
(flatSessions.length > 0 ? flatSessions[0].id : undefined);
const handleClick = useCallback(
(sessionId: string) => {
navigate(sessionUrl(sessionId));
},
[navigate],
);
const handleKeyDown = useCallback(
(e: KeyboardEvent<HTMLElement>) => {
const buttons = tabListRef.current?.querySelectorAll<HTMLButtonElement>('[role="tab"]');
if (!buttons || buttons.length === 0) {
return;
}
const focusedIndex = Array.from(buttons).findIndex((b) => b === document.activeElement);
const activeIndex = flatSessions.findIndex((s) => s.id === activeId);
// Use focused button if present; fall back to active session; fall back to first element.
const currentIndex = focusedIndex >= 0 ? focusedIndex : Math.max(activeIndex, 0);
let nextIndex = currentIndex;
if (e.key === "ArrowDown" || e.key === "j" || e.key === "J") {
e.preventDefault();
nextIndex = (currentIndex + 1) % buttons.length;
} else if (e.key === "ArrowUp" || e.key === "k" || e.key === "K") {
e.preventDefault();
nextIndex = (currentIndex - 1 + buttons.length) % buttons.length;
} else if (e.key === "Home") {
e.preventDefault();
nextIndex = 0;
} else if (e.key === "End") {
e.preventDefault();
nextIndex = buttons.length - 1;
} else {
return;
}
if (nextIndex < flatSessions.length) {
navigate(sessionUrl(flatSessions[nextIndex].id));
}
buttons[nextIndex].focus();
},
[activeId, flatSessions, navigate],
);
return (
<div className={styles.container} data-testid="session-nav">
<div className={styles.headerWrapper}>
<SectionHeader title="Sessions" data-testid="session-nav-header" />
</div>
<nav
ref={tabListRef}
role="tablist"
aria-orientation="vertical"
aria-label="Sessions"
onKeyDown={handleKeyDown}
className={styles.nav}
>
{groups.map((group) => (
<div key={group.environmentId}>
{groups.length > 1 && (
<div className={styles.groupLabel}>
{group.environment?.displayName ?? group.environmentId}
</div>
)}
{group.sessions.map((session) => {
const isActive = session.id === activeId;
const isFocusable = session.id === focusableId;
const { tone } = describeSessionStatus(session);
const dotColor = TONE_COLORS[tone] ?? "var(--text-tertiary)";
return (
<button
key={session.id}
role="tab"
type="button"
aria-selected={isActive}
tabIndex={isFocusable ? 0 : -1}
className={`${styles.tab} ${isActive ? styles.tabActive : ""}`}
onClick={() => handleClick(session.id)}
data-testid="session-nav-item"
>
<span className={styles.statusDot} style={{ color: dotColor }} aria-hidden="true">
<Circle size={ICON_XS} fill="currentColor" />
</span>
<span className={styles.tabLabel} title={session.prompt || session.id}>
{session.id.slice(0, 8)}
</span>
{session.runtime && (
<span className={styles.trailingBadge} title={session.runtime}>
{session.runtime}
</span>
)}
</button>
);
})}
</div>
))}
</nav>
{sessions.length === 0 && <div className={styles.empty}>No sessions yet.</div>}
</div>
);
}
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