import type { MaybeRefOrGetter } from "./types";
import { unref } from "vue";

type Attrs = {
  // eslint-disable-next-line @typescript-eslint/no-explicit-any
  [key: string]: any;
};

// Copied from
// https://github.com/vuejs/vue-next/blob/5a7a1b8293822219283d6e267496bec02234b0bc/packages/shared/src/index.ts#L40-L41
const onRE = /^on[^a-z]/;
export const isOn = (key: string): boolean => onRE.test(key);

export function omitOn(attrs: Attrs): Attrs {
  const result: Attrs = {};
  for (const key in attrs) {
    if (!isOn(key)) {
      result[key] = attrs[key];
    }
  }

  return result;
}

// Copied from
// https://github.com/vuejs/core/blob/3cb4db21efa61852b0541475b4ddf57fdec4c479/packages/shared/src/general.ts#L49-L50
const isFunction = (val: unknown): val is Function => typeof val === "function";

// Copied from
// https://github.com/vuejs/core/blob/3cb4db21efa61852b0541475b4ddf57fdec4c479/packages/reactivity/src/ref.ts#L246-L248
export function toValue<T>(source: MaybeRefOrGetter<T>): T {
  return isFunction(source) ? source() : unref(source);
}