import "./DocsList.scss";

import { FC, useState } from "react";
import { GoDownload, GoSearch, GoTrash, GoTriangleDown, GoTriangleUp } from "react-icons/go";
import { SortDirectionsTooltipMap, StatusMap } from "@/shared/constants";

import Button from "@/components/generics/button/Button";
import { DocsListProps } from "./DocsList.interface";
import Input from "@/components/generics/input/Input";
import { Pagination } from "../../pagination/Pagination";
import { SortDirections } from "@/api/documents/types";
import Spinner from "@/components/generics/spinner/Spinner";
import Tag from "@/components/generics/tag/Tag";
import Tooltip from "@/components/generics/tooltip/Tooltip";
import { downloadDocument } from "@/api/documents/documentsApi";
import { useGetDataset } from "@/api/documents/hooks";

export const DocsList: FC<DocsListProps> = ({ datasetId, handleDeleteFile }) => {
  const [page, setPage] = useState<number>(0);
  const [pageSize, setPageSize] = useState<number>(10);
  const [searchInput, setSearchInput] = useState<string | undefined>(undefined);
  const [search, setSearch] = useState<string | undefined>(undefined);
  const [sort, setSort] = useState<undefined | { field: string; direction: SortDirections }[]>(undefined);
 
  const { data: datasetData, isFetching } = useGetDataset(datasetId ?? -1, { page, page_size: pageSize, search, sort });
  
  const toggleSort = (field: string) => {
    setSort((prevSort) => {
      if (prevSort?.length && prevSort?.length > 0) {
        const newSort = [...prevSort];
        const existingFieldIndex = prevSort?.findIndex((e) => e.field === field);
        const currentDirection = prevSort[existingFieldIndex]?.direction;

        if (existingFieldIndex != null && existingFieldIndex !== -1) {
          const newSort = [...prevSort];
          if (currentDirection === SortDirections.asc) {
            newSort[existingFieldIndex] = { field, direction: SortDirections.desc };
            return newSort;
          } else if (currentDirection === SortDirections.desc) {
            newSort.splice(existingFieldIndex, 1);
            return newSort;
          }
        } else {
          newSort.push({ field, direction: SortDirections.asc });
        }
        return newSort;
      } else {
        return [{ field, direction: SortDirections.asc }];
      }
    });
  };

  const handleEnterPress = (event: React.KeyboardEvent<HTMLInputElement>) => {
    if (event.key === "Enter" && searchInput) {
      setSearch(searchInput);
      setPage(0);
    }
  };

  const sorting = (field: string) => {
    const currentDirection = sort?.find((e) => e.field === field)?.direction;

    return (
      <Tooltip text={SortDirectionsTooltipMap[currentDirection ?? "empty"]}>
        <Button
          onClick={() => toggleSort(field)}
          icon={
            <div className="sort-btn">
              <GoTriangleUp viewBox="0 0 20 20" className={currentDirection === SortDirections.asc ? "active" : ""} />
              <GoTriangleDown
                viewBox="0 0 20 20"
                className={currentDirection === SortDirections.desc ? "arrow-down active" : "arrow-down"}
              />
            </div>
          }
          buttonType="link"
        />
      </Tooltip>
    );
  };

  return (
    <>
      <div className="docs-search-input">
        <Input
          name=""
          placeholder="Введите название документа"
          value={searchInput}
          onSetValue={setSearchInput}
          onKeyDown={handleEnterPress}
          extra={
            <Tooltip text="Поиск">
              <Button
                buttonType="link"
                icon={<GoSearch style={{ width: "19px", height: "19px" }} />}
                onClick={() => {
                  setSearch(searchInput);
                  setPage(0);
                }}
              />
            </Tooltip>
          }
        />
      </div>
      <div className="docs-table-container" style={{ position: "relative" }}>
        {isFetching && (
          <div className="loading-overlay">
            <Spinner />
          </div>
        )}
        <table className="docs-table">
          <thead>
            <tr>
              <th style={{ width: "50%" }}>
                <div className="name-with-sort">
                  <span>Название документа</span>
                  {sorting("name")}
                </div>
              </th>
              <th>
                <div className="name-with-sort">
                  <span>Владелец</span>
                  {sorting("owner")}
                </div>
              </th>
              <th>
                <div className="name-with-sort">
                  <span>Статус</span>
                  {sorting("status")}
                </div>
              </th>
              <th></th>
            </tr>
          </thead>
          <tbody>
            {datasetData?.data.page.map((doc) => (
              <tr key={doc.id}>
                <td>{doc.name}</td>
                <td>{doc.owner}</td>
                <td>
                  <Tag text={doc.status} type={StatusMap[doc.status]} />
                </td>
                <td>
                  <div className="actions">
                    <Button
                      onClick={() => downloadDocument(datasetData.id, doc.id.toString(), doc.name)}
                      icon={<GoDownload />}
                      buttonType="link"
                    />
                    <Button onClick={() => handleDeleteFile(doc.id)} icon={<GoTrash />} buttonType="link" />
                  </div>
                </td>
              </tr>
            ))}
          </tbody>
        </table>
      </div>
      <Pagination
        total={datasetData?.data.total ?? 0}
        pageNumber={datasetData?.data.pageNumber ? datasetData?.data.pageNumber : page}
        pageSize={datasetData?.data.pageSize ?? 20}
        setPageSize={setPageSize}
        setPage={setPage}
      />
    </>
  );
};