import { useEffect, useState } from "react";
import {
  Badge,
  Button,
  Descriptions,
  Form,
  Modal,
  Table,
  message,
} from "antd";
import PageLayout from "@cqsjjb/jjb-react-admin-component/PageLayout";
import TableAction from "@cqsjjb/jjb-react-admin-component/TableAction";
import ControlWrapper from "@cqsjjb/jjb-react-admin-component/ControlWrapper";
import SearchForm from "~/components/SearchForm";
import PreviewUrlButton from "~/components/PreviewUrlButton";
import { AntdTableFuncControl } from "@cqsjjb/jjb-common-decorator/antd";
import { Connect } from "@cqsjjb/jjb-dva-runtime";
import { tools } from "@cqsjjb/jjb-common-lib";
import { NS_COURSEWARE } from "~/enumerate/namespace";
import {
  COURSEWARE_STATUS_MAP,
  COURSEWARE_STATUS_OPTIONS,
  COURSEWARE_TRAINING_TYPE_MAP,
  COURSEWARE_TRAINING_TYPE_OPTIONS,
} from "~/enumerate/constant";

const { router } = tools;

/** 解析课件文档字段：JSON 数组字符串，容错非法格式 */
const parseCoursewareDocument = (raw) => {
  if (!raw) return [];
  try {
    const parsed = JSON.parse(raw);
    return Array.isArray(parsed) ? parsed : [];
  } catch {
    return [];
  }
};

/** 培训课程管理 */
function CourseManagePage(props) {
  const [searchForm] = Form.useForm();
  const [viewRecord, setViewRecord] = useState(null);
  const { courseware } = props;
  const { courseList: dataSource, courseTotal: total, courseLoading: loading } =
    courseware || {};

  const handleSearch = () => {
    props.coursePage(router.query);
  };

  useEffect(() => {
    searchForm.setFieldsValue(router.query);
    handleSearch();
  }, []);

  const columns = [
    {
      title: "序号",
      width: 70,
      fixed: "left",
      render: (_, __, index) => {
        const current = Number(router.query.current) || 1;
        const size = Number(router.query.size) || 10;
        return (current - 1) * size + index + 1;
      },
    },
    {
      title: "课程名称",
      dataIndex: "courseName",
      width: 260,
      ellipsis: true,
    },
    {
      title: "课程描述",
      dataIndex: "courseDescription",
      width: 320,
      ellipsis: true,
    },
    {
      title: "课程状态",
      dataIndex: "status",
      width: 90,
      render: (v) => {
        const item = COURSEWARE_STATUS_MAP[v];
        return item ? <Badge status={item.status} text={item.label} /> : "-";
      },
    },
    {
      title: "总课时",
      dataIndex: "classHourDuration",
      width: 90,
      render: (v) => (v == null ? "-" : v),
    },
    {
      title: "上传单位",
      dataIndex: "uploadUnit",
      width: 200,
      ellipsis: true,
    },
    {
      title: "是否已使用",
      dataIndex: "used",
      width: 100,
      render: (v) => (v === 1 ? "已使用" : "未使用"),
    },
    {
      title: "操作",
      width: 200,
      fixed: "right",
      render: (_, record) => (
        <TableAction>
          <Button
            type="link"
            size="small"
            onClick={() => setViewRecord(record)}
          >
            查看
          </Button>
          <Button
            type="link"
            size="small"
            onClick={() => message.info("课程启用/禁用接口待接入")}
          >
            {record.status === 1 ? "禁用" : "启用"}
          </Button>
          <Button
            type="link"
            size="small"
            onClick={() => message.info("课程编辑接口待接入")}
          >
            编辑
          </Button>
          <Button
            danger
            type="link"
            size="small"
            onClick={() => message.info("课程删除接口待接入")}
          >
            删除
          </Button>
        </TableAction>
      ),
    },
  ];

  const relatedCourseware = viewRecord?.courseRelCoursewareVOList || [];

  return (
    <PageLayout title="培训课程管理">
      <SearchForm
        style={{ marginBottom: 24 }}
        form={searchForm}
        loading={loading}
        formLine={[
          <Form.Item key="courseName" name="courseName">
            <ControlWrapper.Input
              label="课程名称"
              placeholder="请输入名称"
              allowClear
              maxLength={50}
            />
          </Form.Item>,
          <Form.Item key="trainingType" name="trainingType">
            <ControlWrapper.Select
              label="培训类型"
              placeholder="请选择"
              allowClear
              style={{ width: "100%" }}
              options={COURSEWARE_TRAINING_TYPE_OPTIONS}
            />
          </Form.Item>,
          <Form.Item key="status" name="status">
            <ControlWrapper.Select
              label="课程状态"
              placeholder="请选择课程状态"
              allowClear
              style={{ width: "100%" }}
              options={COURSEWARE_STATUS_OPTIONS}
            />
          </Form.Item>,
        ]}
        onReset={(value) => {
          router.query = { ...value, current: 1, size: 10 };
          handleSearch();
        }}
        onFinish={(value) => {
          router.query = { ...value, current: 1, size: 10 };
          handleSearch();
        }}
      />

      <Table
        rowKey="id"
        columns={columns}
        dataSource={Array.isArray(dataSource) ? dataSource : []}
        scroll={{ x: 1500, y: props.scrollY }}
        loading={loading}
        pagination={{
          total,
          showSizeChanger: true,
          showQuickJumper: true,
          showTotal: (t) => `共 ${t} 条`,
          current: Number(router.query.current) || 1,
          pageSize: Number(router.query.size) || 10,
          onChange: (page, pageSize) => {
            router.query = { ...router.query, current: page, size: pageSize };
            handleSearch();
          },
        }}
      />

      <Modal
        title="课程详情"
        open={!!viewRecord}
        width={760}
        footer={null}
        onCancel={() => setViewRecord(null)}
      >
        <Descriptions column={2} bordered size="small">
          <Descriptions.Item label="课程名称" span={2}>
            {viewRecord?.courseName || "-"}
          </Descriptions.Item>
          <Descriptions.Item label="培训类型">
            {COURSEWARE_TRAINING_TYPE_MAP[viewRecord?.trainingType]
              ?? (viewRecord?.trainingType || "-")}
          </Descriptions.Item>
          <Descriptions.Item label="课程状态">
            {COURSEWARE_STATUS_MAP[viewRecord?.status]?.label || "-"}
          </Descriptions.Item>
          <Descriptions.Item label="总课时">
            {viewRecord?.classHourDuration ?? "-"}
          </Descriptions.Item>
          <Descriptions.Item label="是否已使用">
            {viewRecord?.used === 1 ? "已使用" : "未使用"}
          </Descriptions.Item>
          <Descriptions.Item label="上传单位" span={2}>
            {viewRecord?.uploadUnit || "-"}
          </Descriptions.Item>
          <Descriptions.Item label="课程描述" span={2}>
            {viewRecord?.courseDescription || "-"}
          </Descriptions.Item>
        </Descriptions>

        <div style={{ marginTop: 16, marginBottom: 8, fontWeight: 600 }}>
          关联课件
        </div>
        <Table
          rowKey={(row) => row.coursewareId}
          size="small"
          columns={[
            { title: "序号", width: 60, render: (_, __, i) => i + 1 },
            {
              title: "课件名称",
              dataIndex: "coursewareName",
              ellipsis: true,
            },
            {
              title: "课时时长（小时）",
              dataIndex: "classHourDuration",
              width: 130,
              render: (v) => (v == null ? "-" : v),
            },
            {
              title: "学时",
              dataIndex: "creditHours",
              width: 90,
              render: (v) => (v == null ? "-" : v),
            },
            {
              title: "课件文档",
              dataIndex: "coursewareDocument",
              width: 160,
              render: (raw) => {
                const files = parseCoursewareDocument(raw);
                return files.length ? (
                  files.map((f, i) => (
                    <PreviewUrlButton key={f.uid || i} url={f.url}>
                      {f.name || f.url}
                    </PreviewUrlButton>
                  ))
                ) : (
                  "-"
                );
              },
            },
          ]}
          dataSource={relatedCourseware}
          pagination={false}
        />
      </Modal>
    </PageLayout>
  );
}

export default Connect(
  [NS_COURSEWARE],
  true,
)(AntdTableFuncControl(CourseManagePage));