import {useDebounceFn, useThrottleFn} from "@vueuse/core";

export default function usePagination(current: number, limit: number, total: number) {
  const currentRef = ref(current);
  const pageSizeRef = ref(limit);
  const totalRef = ref(total);
  const pagesRef = ref(Math.ceil(totalRef.value / limit))
  watchEffect(()=>{
    pagesRef.value = Math.ceil(totalRef.value / limit)
  })

  function setCurrentPage(page: number) {
    currentRef.value = page;
    // if (isFunction(callback)) {
    //   callback()
    // }
  }
  function setTotal(total: number) {
    totalRef.value = total;
  }
  function setPageSize(pageSize: number):void {
    pageSizeRef.value = pageSize;
  }
  function changePage(flag: 'next'|'prev'):void {
    if(flag === 'next') {
      if (currentRef.value >= pagesRef.value) return;
      else {
        setCurrentPage(currentRef.value + 1)
      }
    }else if(flag === 'prev') {
      if (currentRef.value <= 1) return;
      else {
        currentRef.value --;
        setCurrentPage(currentRef.value - 1)
      }
    }
  }

  return { setCurrentPage,setPageSize, changePage, current: currentRef, limit, total:totalRef, setTotal,pagesRef };
}