AgentHub/client/src/components/Checkbox.tsx

/**
 * @file Checkbox.tsx
 * @description Accessible custom checkbox built on a `<button role="checkbox">`
 * instead of a native `<input type="checkbox">` so the control matches the
 * dashboard's dark theme (accent fill, rounded square, Lucide check mark).
 *
 * ## Keyboard & ARIA
 * Space and Enter toggle via the native button behavior. `aria-checked` mirrors
 * the `checked` prop for screen readers.
 *
 * ## Usage
 * Pass `label` for inline text, or omit it and wrap with an external `<label>`
 * when the clickable area should include more than the box itself.
 *
 * @author Nguyễn Ngọc Trí Vĩ <vinnt@smartgift.vn>
 */
/* =============================================================================
 * MODULE_GUIDE — extended in-file reference (comments only; safe to read, never executed)
 * =============================================================================
 * **Purpose:** Dashboard module consumed by the React client, MCP tools, or desktop shell depending on deployment mode.
 *
 * ## Design constraints
 * - Local-first: no telemetry leaves the machine unless the user configures webhooks.
 * - Fail-safe hooks path on the server must never block Claude Code; UI mirrors that
 *   philosophy by degrading gracefully (empty states, stale badges, reconnect loops).
 * - Destructive flows stay behind explicit confirmation modals and server-side gates.
 * - Internationalization: user-visible strings belong in i18n JSON, not literals here.
 *
 * ## Remote data & SSH
 * Remote Data Sources let operators aggregate multiple machines. SSH entries describe
 * how to reach a peer dashboard; the global data scope (`dataScope.ts`) narrows every
 * scoped GET via `?sources=`. Health checks and import history surface in Settings.
 *
 * ## Public surface
 * - `CheckboxProps` — exported API; see TSDoc on the symbol for behavior.
 * - `Checkbox` — exported API; see TSDoc on the symbol for behavior.
 *
 * ## Testing pointers
 * - Prefer colocated `__tests__` with Vitest + Testing Library for UI.
 * - Server contract changes require `npm run test:server` and OpenAPI sync.
 *
 * ## Related docs
 * - `ARCHITECTURE.md` — hooks → API → SQLite → WebSocket → UI pipeline.
 * - `docs/API.md` — REST reference.
 * - `skills/file-headers/` — mandatory `@author` header policy.
 * ============================================================================= */
/* -----------------------------------------------------------------------------
 * EXPORT CATALOG — quick index of symbols defined below (documentation only).
 * -----------------------------------------------------------------------------
 * **CheckboxProps**
 *   Part of this module's public contract. Downstream imports should treat
 *   the signature and return type as stable unless release notes say otherwise.
 *   When behavior changes, update the `@file` overview and relevant tests.
 *
 * **Checkbox**
 *   Part of this module's public contract. Downstream imports should treat
 *   the signature and return type as stable unless release notes say otherwise.
 *   When behavior changes, update the `@file` overview and relevant tests.
 *
 * ----------------------------------------------------------------------------- */

import type { ReactNode } from "react";
import { Check } from "lucide-react";

/** Props for {@link Checkbox}. */
export interface CheckboxProps {
  /** Controlled checked state. */
  checked: boolean;
  /** Called with the toggled value when the user activates the control. */
  onChange: (v: boolean) => void;
  /** Optional label rendered to the right of the box. */
  label?: ReactNode;
  /** Extra classes on the outer `<button>`. */
  className?: string;
  /** Classes applied to the label `<span>` when `label` is set. */
  labelClassName?: string;
  /** `danger` / `warning` for an opt-in that makes an action riskier
   *  (bypass permissions, purge data, force). */
  tone?: "accent" | "danger" | "warning";
  disabled?: boolean;
  /** Tooltip (the app turns every `title` into its themed bubble). */
  title?: string;
}

// Fill + tick per tone. Accent fills with `accent-solid` under a white tick.
// The status colours are TEXT shades — light in dark mode, dark in light mode —
// so their tick takes the page colour (surface-0), which contrasts both ways.
const TONE = {
  accent: "bg-accent-solid border-accent-solid text-white",
  danger: "bg-status-danger border-status-danger text-surface-0",
  warning: "bg-status-warning border-status-warning text-surface-0",
} as const;

/**
 * Themed checkbox control — the app's ONE checkbox; never a native
 * `<input type="checkbox">`, which renders as the browser's white box.
 * @param props See {@link CheckboxProps}.
 */
export function Checkbox({
  checked,
  onChange,
  label,
  className,
  labelClassName,
  tone = "accent",
  disabled = false,
  title,
}: CheckboxProps) {
  return (
    <button
      type="button"
      role="checkbox"
      aria-checked={checked}
      disabled={disabled}
      title={title}
      onClick={() => onChange(!checked)}
      className={`group inline-flex items-center gap-2 text-left disabled:cursor-not-allowed disabled:opacity-50 focus-visible:outline-none ${className ?? ""}`}
    >
      <span
        className={`flex h-4 w-4 flex-shrink-0 items-center justify-center rounded-[5px] border transition-colors group-focus-visible:ring-2 group-focus-visible:ring-accent/60 ${
          checked ? TONE[tone] : "bg-surface-2 border-fg-muted group-hover:border-fg-secondary"
        }`}
      >
        {checked && <Check className="h-3 w-3" strokeWidth={3} aria-hidden />}
      </span>
      {label != null && (
        <span
          className={labelClassName ?? "text-xs text-fg-secondary group-hover:text-fg-secondary"}
        >
          {label}
        </span>
      )}
    </button>
  );
}