import { isNumber } from "../../utils/types.mjs";
import { debugWarn } from "../../utils/error.mjs";
import { getCurrentInstance, inject, computed, unref, ref } from "vue";
import { isClient } from "../../../node_modules/@vueuse/shared/index.mjs";
const initial = { current: 0 };
const zIndex = ref(0);
const defaultInitialZIndex = 2e3;
const ZINDEX_INJECTION_KEY = Symbol("elZIndexContextKey");
const zIndexContextKey = Symbol("zIndexContextKey");
const useZIndex = (zIndexOverrides) => {
  const increasingInjection = getCurrentInstance() ? inject(ZINDEX_INJECTION_KEY, initial) : initial;
  const zIndexInjection = zIndexOverrides || (getCurrentInstance() ? inject(zIndexContextKey, void 0) : void 0);
  const initialZIndex = computed(() => {
    const zIndexFromInjection = unref(zIndexInjection);
    return isNumber(zIndexFromInjection) ? zIndexFromInjection : defaultInitialZIndex;
  });
  const currentZIndex = computed(() => initialZIndex.value + zIndex.value);
  const nextZIndex = () => {
    increasingInjection.current++;
    zIndex.value = increasingInjection.current;
    return currentZIndex.value;
  };
  if (!isClient && !inject(ZINDEX_INJECTION_KEY)) debugWarn("ZIndexInjection", `Looks like you are using server rendering, you must provide a z-index provider to ensure the hydration process to be succeed
usage: app.provide(ZINDEX_INJECTION_KEY, { current: 0 })`);
  return {
    initialZIndex,
    currentZIndex,
    nextZIndex
  };
};
export {
  ZINDEX_INJECTION_KEY,
  defaultInitialZIndex,
  useZIndex,
  zIndexContextKey
};
