/**
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
import type { ComputedRef } from "vue";
import { ref, computed, unref } from "vue";
import { useEventListener } from "./useEventListener";
import { screenMap, sizeEnum, screenEnum } from "./data";

let globalScreenRef: ComputedRef<sizeEnum | undefined>;
let globalWidthRef: ComputedRef<number>;
let globalRealWidthRef: ComputedRef<number>;

export interface CreateCallbackParams {
  screen: ComputedRef<sizeEnum | undefined>;
  width: ComputedRef<number>;
  realWidth: ComputedRef<number>;
  screenEnum: typeof screenEnum;
  screenMap: Map<sizeEnum, number>;
  sizeEnum: typeof sizeEnum;
}

export function useBreakpoint(): Indexable {
  return {
    screenRef: computed(() => unref(globalScreenRef)),
    widthRef: globalWidthRef,
    screenEnum,
    realWidthRef: globalRealWidthRef,
  };
}

export function createBreakpointListen(fn?: (opt: CreateCallbackParams) => void): Indexable {
  const screenRef = ref<sizeEnum>(sizeEnum.XL || "");
  const realWidthRef = ref(window.innerWidth);

  function getWindowWidth() {
    const width = document.body.clientWidth;
    const xs = screenMap.get(sizeEnum.XS) || 0;
    const sm = screenMap.get(sizeEnum.SM) || 0;
    const md = screenMap.get(sizeEnum.MD) || 0;
    const lg = screenMap.get(sizeEnum.LG) || 0;
    const xl = screenMap.get(sizeEnum.XL) || 0;
    if (width < xs) {
      screenRef.value = sizeEnum.XS;
    } else if (width < sm) {
      screenRef.value = sizeEnum.SM;
    } else if (width < md) {
      screenRef.value = sizeEnum.MD;
    } else if (width < lg) {
      screenRef.value = sizeEnum.LG;
    } else if (width < xl) {
      screenRef.value = sizeEnum.XL;
    } else {
      screenRef.value = sizeEnum.XXL;
    }
    realWidthRef.value = width;
  }

  useEventListener({
    el: window,
    name: "resize",

    listener: () => {
      getWindowWidth();
      resizeFn();
    },
    // wait: 100,
  });

  getWindowWidth();
  globalScreenRef = computed(() => unref(screenRef));
  globalWidthRef = computed((): number => screenMap.get(unref(screenRef)) || 0);
  globalRealWidthRef = computed((): number => unref(realWidthRef));

  function resizeFn() {
    fn?.({
      screen: globalScreenRef,
      width: globalWidthRef,
      realWidth: globalRealWidthRef,
      screenEnum,
      screenMap,
      sizeEnum,
    });
  }

  resizeFn();
  return {
    screenRef: globalScreenRef,
    screenEnum,
    widthRef: globalWidthRef,
    realWidthRef: globalRealWidthRef,
  };
}
