Improve count logging with direct editable totals

src/components/design-system/Counter.test.tsx

@@ -0,0 +1,103 @@
+import { afterAll, afterEach, beforeAll, beforeEach, expect, test } from "bun:test";
+import { Window } from "happy-dom";
+import { act, useState } from "react";
+import type { Root } from "react-dom/client";
+import { Counter } from "./primitives";
+
+const dom = new Window({ url: "http://localhost:3000/design-system" });
+const originalGlobals = new Map<string, PropertyDescriptor | undefined>();
+let createRoot: typeof import("react-dom/client").createRoot;
+let root: Root;
+let container: HTMLDivElement;
+
+beforeAll(async () => {
+  for (const key of ["window", "document", "navigator", "HTMLElement", "HTMLInputElement", "Element", "Node", "Event", "MouseEvent", "IS_REACT_ACT_ENVIRONMENT"]) {
+    originalGlobals.set(key, Object.getOwnPropertyDescriptor(globalThis, key));
+    Object.defineProperty(globalThis, key, {
+      configurable: true,
+      writable: true,
+      value: key === "window" ? dom : key === "IS_REACT_ACT_ENVIRONMENT" ? true : (dom as unknown as Record<string, unknown>)[key],
+    });
+  }
+  ({ createRoot } = await import("react-dom/client"));
+});
+
+beforeEach(() => {
+  container = document.createElement("div");
+  document.body.append(container);
+  root = createRoot(container);
+});
+
+afterEach(async () => {
+  await act(async () => root.unmount());
+  container.remove();
+});
+
+afterAll(() => {
+  dom.happyDOM.abort();
+  for (const [key, descriptor] of originalGlobals) {
+    if (descriptor) Object.defineProperty(globalThis, key, descriptor);
+    else Reflect.deleteProperty(globalThis, key);
+  }
+});
+
+
+const input = () => container.querySelector<HTMLInputElement>("input")!;
+const control = (name: string) => container.querySelector<HTMLButtonElement>(`button[aria-label="${name}"]`)!;
+async function enter(text: string) {
+  await act(async () => {
+    Object.getOwnPropertyDescriptor(dom.HTMLInputElement.prototype, "value")!.set!.call(input(), text);
+    input().dispatchEvent(new dom.Event("input", { bubbles: true }) as unknown as Event);
+  });
+}
+async function key(key: string) {
+  await act(async () => input().dispatchEvent(new dom.KeyboardEvent("keydown", { key, bubbles: true }) as unknown as KeyboardEvent));
+}
+
+test("totals save explicitly, support above-target values and retain step controls", async () => {
+  const updates: number[] = [];
+  function Demo() {
+    const [value, setValue] = useState(8);
+    return <Counter label="pages" value={value} target={8} onChange={next => { updates.push(next); setValue(next); }} />;
+  }
+  await act(async () => root.render(<Demo />));
+  await enter("30");
+  expect(updates).toEqual([]);
+  await key("Enter");
+  expect(updates).toEqual([30]);
+  expect(input().value).toBe("30");
+  expect(control("Save total pages")).toBeNull();
+  await act(async () => control("Increase pages").click());
+  expect(input().value).toBe("31");
+  await enter("40");
+  await act(async () => control("Save total pages").click());
+  expect(updates).toEqual([30, 31, 40]);
+});
+
+test("invalid totals never submit and Escape restores the saved value", async () => {
+  const updates: number[] = [];
+  await act(async () => root.render(<Counter label="pages" value={3} target={8} onChange={next => updates.push(next)} />));
+  for (const invalid of ["", "-1", "1.5", "abc", "1000000001"]) {
+    await enter(invalid);
+    expect(input().getAttribute("aria-invalid")).toBe("true");
+    expect(control("Save total pages").disabled).toBe(true);
+    await key("Enter");
+  }
+  expect(updates).toEqual([]);
+  await key("Escape");
+  expect(input().value).toBe("3");
+  expect(container.querySelector('[role="alert"]')).toBeNull();
+});
+
+test("server refresh replaces a draft and API bounds disable increment and decrement", async () => {
+  const render = (value: number, disabled = false) => root.render(<Counter label="pages" value={value} target={8} disabled={disabled} onChange={() => {}} />);
+  await act(async () => render(0));
+  expect(control("Decrease pages").disabled).toBe(true);
+  await enter("12");
+  await act(async () => render(1_000_000_000));
+  expect(input().value).toBe("1000000000");
+  expect(control("Increase pages").disabled).toBe(true);
+  await act(async () => render(2, true));
+  expect(input().disabled).toBe(true);
+  expect(control("Decrease pages").disabled).toBe(true);
+});

src/components/design-system/primitives.tsx

@@ -1,4 +1,4 @@
-import { useId } from "react";
+import { useId, useState } from "react";
 import type {
   ButtonHTMLAttributes,
   AnchorHTMLAttributes,
@@ -89,28 +89,60 @@ export function Counter({
   onChange: (value: number) => void;
   disabled?: boolean;
 }) {
+  const hintId = useId();
+  const [edit, setEdit] = useState({ source: value, label, text: String(value) });
+  // A changed day or refreshed server total replaces an unsubmitted draft.
+  const refreshed = edit.source !== value || edit.label !== label;
+  if (refreshed) setEdit({ source: value, label, text: String(value) });
+  const draft = refreshed ? String(value) : edit.text;
+  const changed = draft !== String(value);
+  const maximum = 1_000_000_000;
+  const valid = /^\d+$/.test(draft) && Number(draft) <= maximum;
+  const updateDraft = (text: string) => setEdit({ source: value, label, text });
+  const save = () => {
+    if (!disabled && changed && valid) {
+      updateDraft(String(Number(draft)));
+      onChange(Number(draft));
+    }
+  };
+
   return (
     <div className="ds-counter" role="group" aria-label={label}>
       <Button
         variant="text"
         aria-label={`Decrease ${label}`}
         disabled={disabled || value <= 0}
-        onClick={() => onChange(Math.max(0, value - 1))}
+        onClick={() => { updateDraft(String(value)); onChange(Math.max(0, value - 1)); }}
       >
         −
       </Button>
-      <output aria-live="polite">
-        <span>{value}</span>
+      <input
+        className="ds-counter-input"
+        type="text"
+        inputMode="numeric"
+        aria-label={`Total ${label}`}
+        aria-describedby={changed && !valid ? hintId : undefined}
+        aria-invalid={changed && !valid ? true : undefined}
+        title="Enter a total and press Enter to save. Escape cancels."
+        value={draft}
+        disabled={disabled}
+        onChange={event => updateDraft(event.target.value)}
+        onKeyDown={event => {
+          if (event.key === "Enter") { event.preventDefault(); save(); }
+          if (event.key === "Escape") { event.preventDefault(); updateDraft(String(value)); }
+        }}
+      />
       <span className="ds-muted"> / {target}</span>
-      </output>
       <Button
         variant="text"
         aria-label={`Increase ${label}`}
-        disabled={disabled || value >= target}
-        onClick={() => onChange(Math.min(target, value + 1))}
+        disabled={disabled || value >= maximum}
+        onClick={() => { updateDraft(String(value)); onChange(Math.min(maximum, value + 1)); }}
       >
         +
       </Button>
+      {changed && <Button className="ds-counter-save" variant="secondary" disabled={disabled || !valid} onClick={save} aria-label={`Save total ${label}`}>Save</Button>}
+      {changed && !valid && <span className="ds-counter-error" id={hintId} role="alert">Enter a whole number from 0 to 1,000,000,000.</span>}
     </div>
   );
 }