import React, { PureComponent, Fragment } from 'react';
import { connect } from 'dva';
import moment from 'moment';
import { Row, Col, Card, Form, Input, Select, Icon, Button, Dropdown, Menu,
  InputNumber, DatePicker, Modal, message, Badge, Divider, Steps, Radio } from 'antd';
import StandardTable from '../../components/StandardTable';
import PageHeaderLayout from '../../layouts/PageHeaderLayout';

import styles from './TableList.less';

const FormItem = Form.Item;
const { Step } = Steps;
const { TextArea } = Input;
const { Option } = Select;
const RadioGroup = Radio.Group;
const getValue = obj => Object.keys(obj).map(key => obj[key]).join(',');
const statusMap = ['default', 'processing', 'success', 'error'];
const status = ['关闭', '运行中', '已上线', '异常'];

const CreateForm = Form.create()((props) => {
  const { modalVisible, form, handleAdd, handleModalVisible } = props;
  const okHandle = () => {
    form.validateFields((err, fieldsValue) => {
      if (err) return;
      handleAdd(fieldsValue);
    });
  };
  return (
    <Modal
      destroyOnClose
      title="新建规则"
      visible={modalVisible}
      onOk={okHandle}
      onCancel={() => handleModalVisible()}
    >
      <FormItem
        labelCol={{ span: 5 }}
        wrapperCol={{ span: 15 }}
        label="描述"
      >
        {form.getFieldDecorator('desc', {
          rules: [{ required: true, message: '请输入至少五个字符的规则描述！', min: 5 }],
        })(
          <Input placeholder="请输入" />
        )}
      </FormItem>
    </Modal>
  );
});

@Form.create()
class UpdateForm extends PureComponent {
  constructor(props) {
    super(props);

    this.state = {
      formVals: {
        name: props.values.name,
        desc: props.values.desc,
        key: props.values.key,
        target: '0',
        template: '0',
        type: '1',
        time: '',
        frequency: 'month',
      },
      currentStep: 0,
    };

    this.formLayout = {
      labelCol: { span: 7 },
      wrapperCol: { span: 13 },
    };
  }
  handleNext = (currentStep) => {
    const { form, handleUpdate } = this.props;
    form.validateFields((err, fieldsValue) => {
      if (err) return;
      const formVals = { ...this.state.formVals, ...fieldsValue };
      this.setState({
        formVals,
      }, () => {
        if (currentStep < 2) {
          this.forward();
        } else {
          handleUpdate(this.state.formVals);
        }
      });
    });
  }
  backward = () => {
    this.setState({
      currentStep: this.state.currentStep - 1,
    });
  }
  forward = () => {
    this.setState({
      currentStep: this.state.currentStep + 1,
    });
  }
  renderContent = (currentStep, formVals) => {
    const { form } = this.props;
    if (currentStep === 1) {
      return [
        <FormItem key="target" {...this.formLayout} label="监控对象">
          {form.getFieldDecorator('target', {
            initialValue: formVals.target,
          })(
            <Select style={{ width: '100%' }}>
              <Option value="0">表一</Option>
              <Option value="1">表二</Option>
            </Select>
          )}
        </FormItem>,
        <FormItem key="template" {...this.formLayout} label="规则模板">
          {form.getFieldDecorator('template', {
            initialValue: formVals.template,
          })(
            <Select style={{ width: '100%' }}>
              <Option value="0">规则模板一</Option>
              <Option value="1">规则模板二</Option>
            </Select>
          )}
        </FormItem>,
        <FormItem key="type" {...this.formLayout} label="规则类型">
          {form.getFieldDecorator('type', {
            initialValue: formVals.type,
          })(
            <RadioGroup>
              <Radio value="0">强</Radio>
              <Radio value="1">弱</Radio>
            </RadioGroup>
          )}
        </FormItem>,
      ];
    }
    if (currentStep === 2) {
      return [
        <FormItem key="time" {...this.formLayout} label="开始时间">
          {form.getFieldDecorator('time', {
            rules: [{ required: true, message: '请选择开始时间！' }],
          })(
            <DatePicker
              style={{ width: '100%' }}
              showTime
              format="YYYY-MM-DD HH:mm:ss"
              placeholder="选择开始时间"
            />
          )}
        </FormItem>,
        <FormItem key="frequency" {...this.formLayout} label="调度周期">
          {form.getFieldDecorator('frequency', {
            initialValue: formVals.frequency,
          })(
            <Select style={{ width: '100%' }}>
              <Option value="month">月</Option>
              <Option value="week">周</Option>
            </Select>
          )}
        </FormItem>,
      ];
    }
    return [
      <FormItem key="name" {...this.formLayout} label="规则名称">
        {form.getFieldDecorator('name', {
          rules: [{ required: true, message: '请输入规则名称！' }],
          initialValue: formVals.name,
        })(
          <Input placeholder="请输入" />
        )}
      </FormItem>,
      <FormItem key="desc" {...this.formLayout} label="规则描述">
        {form.getFieldDecorator('desc', {
          rules: [{ required: true, message: '请输入至少五个字符的规则描述！', min: 5 }],
          initialValue: formVals.desc,
        })(
          <TextArea rows={4} placeholder="请输入至少五个字符" />
        )}
      </FormItem>,
    ];
  }
  renderFooter = (currentStep) => {
    const { handleUpdateModalVisible } = this.props;
    if (currentStep === 1) {
      return [
        <Button key="back" style={{ float: 'left' }} onClick={this.backward}>上一步</Button>,
        <Button key="cancel" onClick={() => handleUpdateModalVisible()}>取消</Button>,
        <Button key="forward" type="primary" onClick={() => this.handleNext(currentStep)}>
          下一步
        </Button>,
      ];
    }
    if (currentStep === 2) {
      return [
        <Button key="back" style={{ float: 'left' }} onClick={this.backward}>上一步</Button>,
        <Button key="cancel" onClick={() => handleUpdateModalVisible()}>取消</Button>,
        <Button key="submit" type="primary" onClick={() => this.handleNext(currentStep)}>
          完成
        </Button>,
      ];
    }
    return [
      <Button key="cancel" onClick={() => handleUpdateModalVisible()}>取消</Button>,
      <Button key="forward" type="primary" onClick={() => this.handleNext(currentStep)}>
        下一步
      </Button>,
    ];
  }
  render() {
    const { updateModalVisible, handleUpdateModalVisible } = this.props;
    const { currentStep, formVals } = this.state;

    return (
      <Modal
        width={640}
        bodyStyle={{ padding: '32px 40px 48px' }}
        destroyOnClose
        title="规则配置"
        visible={updateModalVisible}
        footer={this.renderFooter(currentStep)}
        onCancel={() => handleUpdateModalVisible()}
      >
        <Steps style={{ marginBottom: 32 }} size="small" current={currentStep}>
          <Step title="基本信息" />
          <Step title="配置规则属性" />
          <Step title="设定调度周期" />
        </Steps>
        { this.renderContent(currentStep, formVals) }
      </Modal>
    );
  }
}

/* eslint react/no-multi-comp:0 */
@connect(({ rule, loading }) => ({
  rule,
  loading: loading.models.rule,
}))
@Form.create()
export default class TableList extends PureComponent {
  state = {
    modalVisible: false,
    updateModalVisible: false,
    expandForm: false,
    selectedRows: [],
    formValues: {},
    stepFormValues: {},
  };

  componentDidMount() {
    const { dispatch } = this.props;
    dispatch({
      type: 'rule/fetch',
    });
  }

  columns = [
    {
      title: '规则名称',
      dataIndex: 'name',
    },
    {
      title: '描述',
      dataIndex: 'desc',
    },
    {
      title: '服务调用次数',
      dataIndex: 'callNo',
      sorter: true,
      align: 'right',
      render: val => `${val} 万`,
      // mark to display a total number
      needTotal: true,
    },
    {
      title: '状态',
      dataIndex: 'status',
      filters: [
        {
          text: status[0],
          value: 0,
        },
        {
          text: status[1],
          value: 1,
        },
        {
          text: status[2],
          value: 2,
        },
        {
          text: status[3],
          value: 3,
        },
      ],
      render(val) {
        return <Badge status={statusMap[val]} text={status[val]} />;
      },
    },
    {
      title: '上次调度时间',
      dataIndex: 'updatedAt',
      sorter: true,
      render: val => <span>{moment(val).format('YYYY-MM-DD HH:mm:ss')}</span>,
    },
    {
      title: '操作',
      render: (text, record) => (
        <Fragment>
          <a onClick={() => this.handleUpdateModalVisible(true, record)}>配置</a>
          <Divider type="vertical" />
          <a href="">订阅警报</a>
        </Fragment>
      ),
    },
  ];

  handleStandardTableChange = (pagination, filtersArg, sorter) => {
    const { dispatch } = this.props;
    const { formValues } = this.state;

    const filters = Object.keys(filtersArg).reduce((obj, key) => {
      const newObj = { ...obj };
      newObj[key] = getValue(filtersArg[key]);
      return newObj;
    }, {});

    const params = {
      currentPage: pagination.current,
      pageSize: pagination.pageSize,
      ...formValues,
      ...filters,
    };
    if (sorter.field) {
      params.sorter = `${sorter.field}_${sorter.order}`;
    }

    dispatch({
      type: 'rule/fetch',
      payload: params,
    });
  }

  handleFormReset = () => {
    const { form, dispatch } = this.props;
    form.resetFields();
    this.setState({
      formValues: {},
    });
    dispatch({
      type: 'rule/fetch',
      payload: {},
    });
  }

  toggleForm = () => {
    this.setState({
      expandForm: !this.state.expandForm,
    });
  }

  handleMenuClick = (e) => {
    const { dispatch } = this.props;
    const { selectedRows } = this.state;

    if (!selectedRows) return;
    switch (e.key) {
      case 'remove':
        dispatch({
          type: 'rule/remove',
          payload: {
            key: selectedRows.map(row => row.key),
          },
          callback: () => {
            this.setState({
              selectedRows: [],
            });
          },
        });
        break;
      default:
        break;
    }
  }

  handleSelectRows = (rows) => {
    this.setState({
      selectedRows: rows,
    });
  }

  handleSearch = (e) => {
    e.preventDefault();

    const { dispatch, form } = this.props;

    form.validateFields((err, fieldsValue) => {
      if (err) return;

      const values = {
        ...fieldsValue,
        updatedAt: fieldsValue.updatedAt && fieldsValue.updatedAt.valueOf(),
      };

      this.setState({
        formValues: values,
      });

      dispatch({
        type: 'rule/fetch',
        payload: values,
      });
    });
  }

  handleModalVisible = (flag) => {
    this.setState({
      modalVisible: !!flag,
    });
  }

  handleUpdateModalVisible = (flag, record) => {
    this.setState({
      updateModalVisible: !!flag,
      stepFormValues: record || {},
    });
  }

  handleAdd = (fields) => {
    this.props.dispatch({
      type: 'rule/add',
      payload: {
        desc: fields.desc,
      },
    });

    message.success('添加成功');
    this.handleModalVisible();
  }

  handleUpdate = (fields) => {
    this.props.dispatch({
      type: 'rule/update',
      payload: {
        name: fields.name,
        desc: fields.desc,
        key: fields.key,
      },
    });

    message.success('配置成功');
    this.handleUpdateModalVisible();
  }

  renderSimpleForm() {
    const { getFieldDecorator } = this.props.form;
    return (
      <Form onSubmit={this.handleSearch} layout="inline">
        <Row gutter={{ md: 8, lg: 24, xl: 48 }}>
          <Col md={8} sm={24}>
            <FormItem label="规则名称">
              {getFieldDecorator('name')(
                <Input placeholder="请输入" />
              )}
            </FormItem>
          </Col>
          <Col md={8} sm={24}>
            <FormItem label="使用状态">
              {getFieldDecorator('status')(
                <Select placeholder="请选择" style={{ width: '100%' }}>
                  <Option value="0">关闭</Option>
                  <Option value="1">运行中</Option>
                </Select>
              )}
            </FormItem>
          </Col>
          <Col md={8} sm={24}>
            <span className={styles.submitButtons}>
              <Button type="primary" htmlType="submit">查询</Button>
              <Button style={{ marginLeft: 8 }} onClick={this.handleFormReset}>重置</Button>
              <a style={{ marginLeft: 8 }} onClick={this.toggleForm}>
                展开 <Icon type="down" />
              </a>
            </span>
          </Col>
        </Row>
      </Form>
    );
  }

  renderAdvancedForm() {
    const { getFieldDecorator } = this.props.form;
    return (
      <Form onSubmit={this.handleSearch} layout="inline">
        <Row gutter={{ md: 8, lg: 24, xl: 48 }}>
          <Col md={8} sm={24}>
            <FormItem label="规则名称">
              {getFieldDecorator('name')(
                <Input placeholder="请输入" />
              )}
            </FormItem>
          </Col>
          <Col md={8} sm={24}>
            <FormItem label="使用状态">
              {getFieldDecorator('status')(
                <Select placeholder="请选择" style={{ width: '100%' }}>
                  <Option value="0">关闭</Option>
                  <Option value="1">运行中</Option>
                </Select>
              )}
            </FormItem>
          </Col>
          <Col md={8} sm={24}>
            <FormItem label="调用次数">
              {getFieldDecorator('number')(
                <InputNumber style={{ width: '100%' }} />
              )}
            </FormItem>
          </Col>
        </Row>
        <Row gutter={{ md: 8, lg: 24, xl: 48 }}>
          <Col md={8} sm={24}>
            <FormItem label="更新日期">
              {getFieldDecorator('date')(
                <DatePicker style={{ width: '100%' }} placeholder="请输入更新日期" />
              )}
            </FormItem>
          </Col>
          <Col md={8} sm={24}>
            <FormItem label="使用状态">
              {getFieldDecorator('status3')(
                <Select placeholder="请选择" style={{ width: '100%' }}>
                  <Option value="0">关闭</Option>
                  <Option value="1">运行中</Option>
                </Select>
              )}
            </FormItem>
          </Col>
          <Col md={8} sm={24}>
            <FormItem label="使用状态">
              {getFieldDecorator('status4')(
                <Select placeholder="请选择" style={{ width: '100%' }}>
                  <Option value="0">关闭</Option>
                  <Option value="1">运行中</Option>
                </Select>
              )}
            </FormItem>
          </Col>
        </Row>
        <div style={{ overflow: 'hidden' }}>
          <span style={{ float: 'right', marginBottom: 24 }}>
            <Button type="primary" htmlType="submit">查询</Button>
            <Button style={{ marginLeft: 8 }} onClick={this.handleFormReset}>重置</Button>
            <a style={{ marginLeft: 8 }} onClick={this.toggleForm}>
              收起 <Icon type="up" />
            </a>
          </span>
        </div>
      </Form>
    );
  }

  renderForm() {
    return this.state.expandForm ? this.renderAdvancedForm() : this.renderSimpleForm();
  }

  render() {
    const { rule: { data }, loading } = this.props;
    const { selectedRows, modalVisible, updateModalVisible, stepFormValues } = this.state;
    const menu = (
      <Menu onClick={this.handleMenuClick} selectedKeys={[]}>
        <Menu.Item key="remove">删除</Menu.Item>
        <Menu.Item key="approval">批量审批</Menu.Item>
      </Menu>
    );

    const parentMethods = {
      handleAdd: this.handleAdd,
      handleModalVisible: this.handleModalVisible,
    };
    const updateMethods = {
      handleUpdateModalVisible: this.handleUpdateModalVisible,
      handleUpdate: this.handleUpdate,
    };
    return (
      <PageHeaderLayout title="查询表格">
        <Card bordered={false}>
          <div className={styles.tableList}>
            <div className={styles.tableListForm}>
              {this.renderForm()}
            </div>
            <div className={styles.tableListOperator}>
              <Button icon="plus" type="primary" onClick={() => this.handleModalVisible(true)}>
                新建
              </Button>
              {
                selectedRows.length > 0 && (
                  <span>
                    <Button>批量操作</Button>
                    <Dropdown overlay={menu}>
                      <Button>
                        更多操作 <Icon type="down" />
                      </Button>
                    </Dropdown>
                  </span>
                )
              }
            </div>
            <StandardTable
              selectedRows={selectedRows}
              loading={loading}
              data={data}
              columns={this.columns}
              onSelectRow={this.handleSelectRows}
              onChange={this.handleStandardTableChange}
            />
          </div>
        </Card>
        <CreateForm
          {...parentMethods}
          modalVisible={modalVisible}
        />
        {
          stepFormValues && Object.keys(stepFormValues).length ?
            (
              <UpdateForm
                {...updateMethods}
                updateModalVisible={updateModalVisible}
                values={stepFormValues}
              />
            ) : null
        }
      </PageHeaderLayout>
    );
  }
}