"use client";

import { IMetaData } from "@/lib/api/types/Factory";
import { AxiosError } from "axios";
import { useCallback, useEffect, useMemo, useState } from "react";

const isInvalidCursorError = (error: unknown) => {
  const axiosError = error as AxiosError<{ error?: { message?: string } }>;
  if (axiosError.response?.status !== 400) return false;
  const message = axiosError.response?.data?.error?.message ?? "";
  return /cursor|pagination/i.test(message);
};

type UseHybridPaginationOptions = {
  meta?: IMetaData;
  params: Record<string, unknown>;
  setParams: React.Dispatch<React.SetStateAction<Record<string, any>>>;
  isError?: boolean;
  error?: unknown;
};

export const useHybridPagination = ({
  meta,
  params,
  setParams,
  isError,
  error,
}: UseHybridPaginationOptions) => {
  const [cursorStack, setCursorStack] = useState<string[]>([]);

  const limit = meta?.limit ?? Number(params.limit) ?? 10;

  const clearCursorStack = useCallback(() => {
    setCursorStack([]);
  }, []);

  const resetToFirstPage = useCallback(() => {
    clearCursorStack();
    setParams((current) => {
      const next: Record<string, any> = { ...current, offset: 0, limit };
      delete next.cursor;
      return next;
    });
  }, [clearCursorStack, limit, setParams]);

  useEffect(() => {
    if (!isError || !error || !isInvalidCursorError(error)) return;
    resetToFirstPage();
  }, [isError, error, resetToFirstPage]);

  const hasNext = Boolean(meta?.has_more && meta?.next_cursor);
  const hasPrevious = cursorStack.length > 0 || (meta?.page ?? 1) > 1;

  const currentPageIndex = useMemo(() => {
    if (meta?.page != null) return meta.page - 1;
    return cursorStack.length;
  }, [cursorStack.length, meta?.page]);

  const pagination = useMemo(
    () => ({
      currentPage: currentPageIndex,
      totalPages: meta?.pages ?? 1,
    }),
    [currentPageIndex, meta?.pages],
  );

  const goToOffsetPage = useCallback(
    (pageIndex: number) => {
      clearCursorStack();
      setParams((current) => {
        const next: Record<string, any> = {
          ...current,
          offset: pageIndex * limit,
          limit,
        };
        delete next.cursor;
        return next;
      });
    },
    [clearCursorStack, limit, setParams],
  );

  const goToNextCursorPage = useCallback(() => {
    const nextCursor = meta?.next_cursor;
    if (!meta?.has_more || !nextCursor) return;

    setCursorStack((stack) => [...stack, nextCursor]);
    setParams((current) => {
      const next: Record<string, any> = { ...current, cursor: nextCursor, limit };
      delete next.offset;
      return next;
    });
  }, [limit, meta?.has_more, meta?.next_cursor, setParams]);

  const goToPreviousPage = useCallback(() => {
    if (cursorStack.length > 0) {
      const nextStack = cursorStack.slice(0, -1);
      const previousCursor = nextStack[nextStack.length - 1];

      setCursorStack(nextStack);
      setParams((current) => {
        const next: Record<string, any> = { ...current, limit };
        if (previousCursor) {
          next.cursor = previousCursor;
          delete next.offset;
        } else {
          next.offset = 0;
          delete next.cursor;
        }
        return next;
      });
      return;
    }

    const page = meta?.page ?? 1;
    if (page <= 1) {
      resetToFirstPage();
      return;
    }

    goToOffsetPage(page - 2);
  }, [cursorStack, goToOffsetPage, limit, meta?.page, resetToFirstPage, setParams]);

  const handlePaginationChange = useCallback(
    (e: { selected: number }) => {
      const targetIndex = e.selected;
      const delta = targetIndex - currentPageIndex;

      if (delta === 1 && hasNext) {
        goToNextCursorPage();
        return;
      }

      if (delta === -1 && hasPrevious) {
        goToPreviousPage();
        return;
      }

      goToOffsetPage(targetIndex);
    },
    [
      currentPageIndex,
      goToNextCursorPage,
      goToOffsetPage,
      goToPreviousPage,
      hasNext,
      hasPrevious,
    ],
  );

  const buildFirstPageParams = useCallback(
    (base: Record<string, any>) => {
      const next: Record<string, any> = { ...base, offset: 0, limit };
      delete next.cursor;
      clearCursorStack();
      return next;
    },
    [clearCursorStack, limit],
  );

  return {
    pagination,
    handlePaginationChange,
    buildFirstPageParams,
    resetToFirstPage,
    clearCursorStack,
    currentPageIndex,
    hasNext,
    hasPrevious,
  };
};