import React, { useState, useEffect } from "react";
import { Row, Col, Form, Input, Cascader, Button, message } from "antd";
import styles from "./create.module.less";
import { department } from "../../api/index";
import { useNavigate } from "react-router-dom";
import { BackBartment } from "../../compenents";

interface Option {
  value: string | number;
  label: string;
  children?: Option[];
}

export const DepartmentCreatePage: React.FC = () => {
  const navigate = useNavigate();
  const [form] = Form.useForm();
  const [loading, setLoading] = useState<boolean>(true);
  const [categories, setCategories] = useState<any>([]);
  const [parent_id, setParentId] = useState<number>(0);

  useEffect(() => {
    getParams();
  }, []);

  const getParams = () => {
    department.createDepartment().then((res: any) => {
      const departments = res.data.departments;
      const new_arr: Option[] = checkArr(departments, 0);
      setCategories(new_arr);
    });
  };

  const checkArr = (departments: any[], id: number) => {
    const arr = [];
    for (let i = 0; i < departments[id].length; i++) {
      if (!departments[departments[id][i].id]) {
        arr.push({
          label: departments[id][i].name,
          value: departments[id][i].id,
        });
      } else {
        const new_arr: Option[] = checkArr(departments, departments[id][i].id);
        arr.push({
          label: departments[id][i].name,
          value: departments[id][i].id,
          children: new_arr,
        });
      }
    }
    return arr;
  };

  const onFinish = (values: any) => {
    department
      .storeDepartment(values.name, parent_id || 0, values.sort)
      .then((res: any) => {
        message.success("保存成功！");
        navigate(-1);
      });
  };

  const onFinishFailed = (errorInfo: any) => {
    console.log("Failed:", errorInfo);
  };

  const handleChange = (value: any) => {
    if (value !== undefined) {
      let it = value[value.length - 1];
      setParentId(it);
    } else {
      setParentId(0);
    }
  };

  const displayRender = (label: any, selectedOptions: any) => {
    return label[label.length - 1];
  };

  return (
    <>
      <Row className="playedu-main-body">
        <Col>
          <div className="float-left mb-24">
            <BackBartment title="新建部门" />
          </div>
          <div className="float-left">
            <Form
              form={form}
              name="basic"
              labelCol={{ span: 8 }}
              wrapperCol={{ span: 16 }}
              style={{ width: 600 }}
              initialValues={{ remember: true }}
              onFinish={onFinish}
              onFinishFailed={onFinishFailed}
              autoComplete="off"
            >
              <Form.Item label="父级" name="parent_id">
                <Cascader
                  style={{ width: 300 }}
                  allowClear
                  placeholder="请选择部门"
                  onChange={handleChange}
                  options={categories}
                  changeOnSelect
                  expand-trigger="hover"
                  displayRender={displayRender}
                />
              </Form.Item>
              <Form.Item
                label="部门名"
                name="name"
                rules={[{ required: true, message: "请输入部门名!" }]}
              >
                <Input style={{ width: 300 }} placeholder="请输入部门名" />
              </Form.Item>
              <Form.Item
                label="Sort"
                name="sort"
                rules={[{ required: true, message: "请输入Sort!" }]}
              >
                <Input
                  type="number"
                  style={{ width: 300 }}
                  placeholder="请输入Sort"
                />
              </Form.Item>
              <Form.Item wrapperCol={{ offset: 8, span: 16 }}>
                <Button type="primary" htmlType="submit">
                  保存
                </Button>
                <Button
                  className="ml-15"
                  htmlType="button"
                  onClick={() => navigate(-1)}
                >
                  取消
                </Button>
              </Form.Item>
            </Form>
          </div>
        </Col>
      </Row>
    </>
  );
};