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import * as React from 'react';
import { create } from 'zustand';
import { subscribeWithSelector } from 'zustand/middleware';
// These are removed in Zustand v4
// unknown
// Zustand v3 marked deprecations in 3.x, but there's no visible upgrade path
const context = /* @__PURE__ */React.createContext(null);
function KeyboardControls({
map,
children,
onChange,
domElement
}) {
const key = map.map(item => item.name + item.keys).join('-');
const useControls = React.useMemo(() => {
return create(subscribeWithSelector(() => map.reduce((prev, cur) => ({
...prev,
[cur.name]: false
}), {})));
}, [key]);
const api = React.useMemo(() => [useControls.subscribe, useControls.getState, useControls], [key]);
const set = useControls.setState;
React.useEffect(() => {
const config = map.map(({
name,
keys,
up
}) => ({
keys,
up,
fn: value => {
// Set zustand state
set({
[name]: value
});
// Inform callback
if (onChange) onChange(name, value, api[1]());
}
}));
const keyMap = config.reduce((out, {
keys,
fn,
up = true
}) => {
keys.forEach(key => out[key] = {
fn,
pressed: false,
up
});
return out;
}, {});
const downHandler = ({
key,
code
}) => {
const obj = keyMap[key] || keyMap[code];
if (!obj) return;
const {
fn,
pressed,
up
} = obj;
obj.pressed = true;
if (up || !pressed) fn(true);
};
const upHandler = ({
key,
code
}) => {
const obj = keyMap[key] || keyMap[code];
if (!obj) return;
const {
fn,
up
} = obj;
obj.pressed = false;
if (up) fn(false);
};
const source = domElement || window;
source.addEventListener('keydown', downHandler, {
passive: true
});
source.addEventListener('keyup', upHandler, {
passive: true
});
return () => {
source.removeEventListener('keydown', downHandler);
source.removeEventListener('keyup', upHandler);
};
}, [domElement, key]);
return /*#__PURE__*/React.createElement(context.Provider, {
value: api,
children: children
});
}
function useKeyboardControls(sel) {
const [sub, get, store] = React.useContext(context);
if (sel) return store(sel);else return [sub, get];
}
export { KeyboardControls, useKeyboardControls };
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