import { toReactive } from "@vueuse/core";
import { reactive, ref, shallowRef, toRaw, watchEffect } from "vue";
import * as Element from "../element";
import { useI18n } from "vue3-i18n";
import { PageResponse } from "../http";
import { clearAndAssign, deepCopy } from "../util/objectUtil";

const { showMessage } = Element;

export interface TableColumn {
  code: string;
  name?: string;
  i18n?: string;
  type?: string;
  width?: string | number;
  fixed?: boolean | "left" | "right";
  align?: "left" | "center" | "right";
  slot?: boolean;
  dict?: string;
  timestamp?: boolean;
  filesize?: boolean;

  [others: string]: any;
}

export interface TableData {
  rows: PageResponse<any>;
  example: Record<string, any>;
}

interface Options {
  query: (example: any) => Promise<PageResponse<any> | Record<string, any>[] | undefined>;
  initialPage?: number;
  initialPageSize?: number;
  initExample?: Record<string, any>;
  disableAutoQuery?: boolean;
  deep?: boolean;
}

export function useListTable(options: Options) {
  const { t } = useI18n();
  const { initialPage, initialPageSize, initExample, deep } = options;

  type Row = Record<string, any>;
  type Rows = Row[] | PageResponse<Row>;

  const empty = <T>() => [] as T[];
  const rows = deep ? ref<Rows>(empty()) : shallowRef<Rows>(empty());

  const setRows = (resp?: Rows) => {
    if (resp == null) {
      rows.value = empty();
    } else {
      rows.value = resp;
      if (Array.isArray(resp) || resp.total == null) {
        for (const key in pageParams) {
          delete example[key];
        }
      }
    }
  };

  const pageParams = {
    page: initialPage || 1,
    size: initialPageSize || 10,
  };

  const defaultExample = () => ({
    ...pageParams,
    ...initExample,
  });

  const example = reactive<any>(defaultExample());

  const setExample = (params: Record<string, any>) => {
    clearAndAssign(example, { ...defaultExample(), ...params });
  };

  const query = async () => {
    try {
      const resp = await options.query(deepCopy(toRaw(example)));
      setRows(resp);
    } catch (error) {
      console.error(error);
      showMessage("error", t("common.errors.listTableQueryError"));
    }
  };

  if (!options.disableAutoQuery) {
    watchEffect(query);
  }

  return {
    rows: toReactive(rows),
    example,
    setRows,
    setExample,
    query,
  };
}