/* eslint-disable no-trailing-spaces */
import React, { Component } from 'react';
import { connect } from 'dva';
import { Tooltip, Card, Modal, Form, Table, List, Steps, Select, Button, Input, Icon } from 'antd';
import Ellipsis from '../../../components/Ellipsis';
import Selector from '../../../components/AXTableSelector/Selector';
import FooterToolbar from '../../../components/FooterToolbar';
import { checkProductType, toDecimal2 } from '../../../utils/utils';
import { Hotax } from '../../../utils/config';
import styles from './OrderCreate.less';

const formItemLayout = {
  labelCol: {
    xs: { span: 24 },
    sm: { span: 7 },
  },
  wrapperCol: {
    xs: { span: 24 },
    sm: { span: 14 },
    md: { span: 10 },
  },
};

@connect(({ terminal, shelves, trade, loading }) => ({
  trade,
  shelves,
  terminal,
  sLoading: loading.models.shelves,
  tLoading: loading.models.terminal,
  submitting: loading.models.trade,
}))
@Form.create()
export default class OrderCreatePage extends Component {
  state = {
    currentStep: 0,
    selectedGoods: [],
    adjustPrice: 0,
    deliveryInfo: {},
    terminalSelectorDestroy: true,
    goodsSelectorDestroy: true,
    packageFixModalDestroy: true,
    packageContent: {},
    width: '100%',
  };
  componentDidMount() {
    // 监听视图窗口变化
    window.addEventListener('resize', this.resizeFooterToolbar);
    this.resizeFooterToolbar();
  }
  componentWillUnmount() {
    window.removeEventListener('resize', this.resizeFooterToolbar);
  }
  resizeFooterToolbar = () => {
    const sider = document.querySelectorAll('.ant-layout-sider')[0];
    const width = `calc(100% - ${sider.style.width})`;
    if (this.state.width !== width) {
      this.setState({ width });
    }
  };
  // 终端模态选择器显示
  handleTerminalSelectorModalShow = () => {
    this.setState({
      terminalSelectorDestroy: false,
    });
    this.props.dispatch({
      type: 'terminal/fetchTerminalList',
      payload: {},
    });
  };
  // 终端模态选择器完成
  handleTerminalSelectorFinish = (rows) => {
    this.setState({
      terminalSelectorDestroy: true,
    });
    if (!rows || !rows.length) {
      return;
    }
    const {
      id, code, name, campusName, merchantId, contactName, mobile, address,
    } = rows[0];
    this.setState({
      deliveryInfo: {
        id, code, name, campusName, merchantId, contactName, mobile, address,
      },
    });
  };
  // 终端模态选择器取消
  handleTerminalSelectorCancel = () => {
    this.setState({
      terminalSelectorDestroy: true,
    });
  };
  // 终端模态选择器变化
  handleTerminalSelectorChange = (params) => {
    this.props.dispatch({
      type: 'terminal/fetchTerminalList',
      payload: params,
    });
  };
  // 商品模态选择器展现
  handleGoodsSelectorModalShow = () => {
    const { deliveryInfo } = this.state;
    const { merchantId } = deliveryInfo;
    this.setState({
      goodsSelectorDestroy: false,
    });
    this.props.dispatch({
      type: 'shelves/fetchItemList',
      payload: { merchantId },
    });
  };
  // 商品模态选择器变化
  handleGoodsSelectorChange = (params) => {
    const { deliveryInfo } = this.state;
    const { merchantId } = deliveryInfo;
    this.props.dispatch({
      type: 'shelves/fetchItemList',
      payload: { merchantId, ...params },
    });
  };
  // 商品模态选择器完成
  handleGoodsSelectorFinish = (rows) => {
    // 去掉没有定价的商品
    const newRows = rows.filter((row) => {
      return !(!row.goods || !row.goods.length);
    });
    this.setState({
      goodsSelectorDestroy: true,
      selectedGoods: newRows,
    });
  };
  // 商品模态选择器取消
  handleGoodsSelectorCancel = () => {
    this.setState({
      goodsSelectorDestroy: true,
    });
  };
  // 套餐包详情模态框展现
  handlePackageFixModalShow = (contents) => {
    this.setState({
      packageFixModalDestroy: false,
      packageContent: contents,
    });
  };
  // 套餐包详情模态框取消
  handlePackageFixCancel = () => {
    this.setState({
      packageFixModalDestroy: true,
    });
  };
  // 响应价格变化
  handleGoodsSelectChange = (rowIndex, goodsId) => {
    const { selectedGoods } = this.state;
    const targetRow = selectedGoods[rowIndex];
    const { goods } = targetRow;
    const targetGoods = goods.find(goodsItem => goodsItem.id === goodsId);
    if (targetGoods) {
      targetRow.selectedGoodsId = targetGoods.id;
      targetRow.selectedChargeUnit = targetGoods.chargeUnit;
      targetRow.selectedPrice = targetGoods.merchantPrice;
      selectedGoods[rowIndex] = targetRow;
      this.setState({ selectedGoods });
    }
  };
  // 响应数量变化 - 填写
  handleQuantityInputChange = (rowIndex, e) => {
    const { selectedGoods } = this.state;
    const targetRow = selectedGoods[rowIndex];
    targetRow.quantity = e.target.value;
    selectedGoods[rowIndex] = targetRow;
    this.setState({ selectedGoods });
  };
  // 响应数量变化 - 加减
  handleQuantityStepChange = (rowIndex, type) => {
    const { selectedGoods } = this.state;
    const targetRow = selectedGoods[rowIndex];
    const { quantity } = targetRow;
    if (type === 'plus') {
      targetRow.quantity = quantity + 1;
    } else if (type === 'minus' && quantity > 1) {
      targetRow.quantity = quantity - 1;
    }
    selectedGoods[rowIndex] = targetRow;
    this.setState({ selectedGoods });
  };
  // 优惠价格调整
  handleAdjustPriceChange = (value) => {
    this.setState({ adjustPrice: value });
  };
  // 下一步
  nextStep = () => {
    const { currentStep } = this.state;
    if (currentStep === 0) {
      this.props.form.validateFieldsAndScroll((error, values) => {
        if (!error) {
          this.setState({
            currentStep: this.state.currentStep + 1,
            deliveryInfo: {
              ...this.state.deliveryInfo,
              ...values,
            },
          });
        }
      });
      return;
    }
    this.setState({ currentStep: this.state.currentStep + 1 });
  };
  // 上一步
  prevStep = () => {
    this.setState({ currentStep: this.state.currentStep - 1 });
  };
  // 提交订单
  handleSubmitOrder = (goodsList) => {
    const { deliveryInfo, adjustPrice } = this.state;
    const { id, contactName, mobile, address } = deliveryInfo;
    const goods = goodsList.map(item => ({
      goodsId: item.selectedGoodsId,
      quantity: item.quantity,
    }));
    const jsonBody = {
      mobile,
      address,
      goods,
      adjustPrice,
      uid: id,
      name: contactName,
      status: Hotax.ORDER_UNPAID,
    };
    this.props.dispatch({
      type: 'trade/createOrderItem',
      payload: jsonBody,
    });
  };

  render() {
    const {
      currentStep, selectedGoods, adjustPrice = 0, deliveryInfo, packageContent,
      terminalSelectorDestroy, goodsSelectorDestroy, packageFixModalDestroy,
    } = this.state;
    const {
      code, name, campusName, contactName, mobile, address,
    } = deliveryInfo;
    const { terminal, tLoading, shelves, sLoading, form } = this.props;
    const { getFieldDecorator } = form;

    // ##### Card1: 终端选择及收货信息填写 #####
    const terminalInfoCard = () => {
      const getTerminalModal = () => {
        return (
          <Modal
            visible
            width={1100}
            footer={null}
            title="终端列表"
            maskClosable={false}
            onCancel={this.handleTerminalSelectorCancel}
          >
            <Selector
              multiple={false}
              loading={tLoading}
              selectorName="Terminal"
              list={terminal.list}
              pageNo={terminal.pageNo}
              pageSize={terminal.pageSize}
              totalSize={terminal.totalSize}
              onCancel={this.handleTerminalSelectorCancel}
              onChange={this.handleTerminalSelectorChange}
              onFinish={this.handleTerminalSelectorFinish}
            />
          </Modal>
        );
      };
      return (
        <Card title="终端信息" style={{ marginTop: 10, marginBottom: 70 }}>
          <Form>
            <Form.Item
              {...formItemLayout}
              label={<Button size="small" type="primary" onClick={this.handleTerminalSelectorModalShow}>选择终端</Button>}
            >
              <List
                bordered
                size="small"
                dataSource={[
                  `终端编号: ${code || ''}`,
                  `终端名称: ${name || ''}`,
                  `所属校区: ${campusName || ''}`,
                ]}
                renderItem={item => <List.Item>{item}</List.Item>}
              />
            </Form.Item>
            <Form.Item label="收货人" {...formItemLayout}>
              {getFieldDecorator('contactName', {
                rules: [{ required: true, message: '请填写收货人' }],
                initialValue: contactName,
              })(
                <Input placeholder="请填写" />
              )}
            </Form.Item>
            <Form.Item label="收货地址" {...formItemLayout}>
              {getFieldDecorator('address', {
                rules: [{ required: true, message: '请填写收货地址' }],
                initialValue: address,
              })(
                <Input placeholder="请填写" />
              )}
            </Form.Item>
            <Form.Item label="手机号码" {...formItemLayout}>
              {getFieldDecorator('mobile', {
                rules: [
                  {
                    required: true, message: '请填写联系电话',
                  }, {
                    pattern: /^[1][34578][0-9]{9}$/g, message: '请输入11位有效手机号!',
                  },
                ],
                initialValue: mobile,
              })(
                <Input placeholder="请填写" />
              )}
            </Form.Item>
          </Form>
          {!terminalSelectorDestroy && getTerminalModal()}
        </Card>
      );
    };

    // ##### Card2: 商品选择 #####
    const rowDataFormatter = (rows) => {
      // 默认选定第一个价格类型
      const findSelectedPrice = (goodsArr) => {
        if (!goodsArr) { return; }
        let selectedGoodsId = null;
        let selectedChargeUnit = null;
        let selectedPrice = null;
        goodsArr.forEach((item, index) => {
          if (index === 0) {
            selectedGoodsId = item.id;
            selectedChargeUnit = item.chargeUnit;
            selectedPrice = parseInt(item.merchantPrice, 10);
          }
        });
        return { selectedGoodsId, selectedChargeUnit, selectedPrice };
      };
      const newRows = [];
      for (let row of rows) {
        // 设置默认数量
        if (!row.quantity) {
          row.quantity = 1;
        }
        // 设置默认选中价格
        if (!row.selectedGoodsId) {
          const price = findSelectedPrice(row.goods);
          row = { ...row, ...price };
        }
        // 小计
        row.subTotal = row.quantity * row.selectedPrice;
        newRows.push(row);
      }
      return newRows;
    };
    // 按需求处理后的数据
    const formattedDataSource = rowDataFormatter(selectedGoods);
    // 计算总价
    const computeTotalPrice = (rows) => {
      let sum = 0;
      rows.forEach((row) => {
        sum += row.subTotal;
      });
      return sum;
    };
    const totalPrice = computeTotalPrice(formattedDataSource);
    const goodsSelectCard = () => {
      const getGoodsModal = () => {
        return (
          <Modal
            visible
            width={1100}
            footer={null}
            title="商品列表"
            maskClosable={false}
            onCancel={this.handleGoodsSelectorCancel}
          >
            <Selector
              multiple
              loading={sLoading}
              selectorName="Product"
              list={shelves.list}
              pageNo={shelves.pageNo}
              pageSize={shelves.pageSize}
              totalSize={shelves.totalSize}
              selectedRows={selectedGoods}
              onCancel={this.handleGoodsSelectorCancel}
              onChange={this.handleGoodsSelectorChange}
              onFinish={this.handleGoodsSelectorFinish}
            />
          </Modal>
        );
      };
      // 修正课程包内配套数量
      const getPackageFixModal = () => {
        const { products } = packageContent;
        const packageColumns = [{
          title: '产品编号',
          dataIndex: 'code',
          key: 'code',
          width: '20%',
        }, {
          title: '产品名称',
          dataIndex: 'name',
          key: 'name',
          width: '40%',
        }, {
          title: '产品类型',
          dataIndex: 'type',
          key: 'type',
          render: text => checkProductType(text),
          width: '20%',
          align: 'center',
        }, {
          title: '单价',
          dataIndex: 'merchantPrice',
          key: 'merchantPrice',
          width: '20%',
          render: (text, record) => {
            if (record.type !== Hotax.PRODUCT_SUPPORT) {
              return '-';
            }
            return `¥${text}/件`;
          },
          align: 'center',
        /* TODO: 套餐包内配套数量修改
        }, {
          title: '数量',
          dataIndex: 'quantity',
          key: 'quantity',
          width: '20%',
          render: (text, record, index) => {
            if (record.type !== Hotax.PRODUCT_SUPPORT) {
              return '-';
            }
            return (
              <Input
                style={{ width: 150 }}
                addonBefore={
                  <Icon
                    type="minus"
                    className={styles.icon}
                    onClick={() => this.handleQuantityStepChange(index, 'minus', record.id)}
                  />
                }
                addonAfter={
                  <Icon
                    type="plus"
                    className={styles.icon}
                    onClick={() => this.handleQuantityStepChange(index, 'plus', record.id)}
                  />
                }
                value={text}
                onChange={e => this.handleQuantityInputChange(index, e, record.id)}
              />
            );
          },
          align: 'center',
        */
        }];
        return (
          <Modal
            visible
            width={1100}
            title="套餐包详情"
            maskClosable={false}
            onCancel={this.handlePackageFixCancel}
          >
            <Table
              bordered
              pagination={false}
              columns={packageColumns}
              dataSource={products}
              rowKey={record => record.id}
              scroll={{ y: 500 }}
            />
          </Modal>
        );
      };
      const goodsColumns = [{
        title: '商品编号',
        dataIndex: 'code',
        key: 0,
        render: (text, record) => {
          if (record.type === Hotax.PRODUCT_PACKAGE) {
            return (
              <Tooltip placement="top" title="点击查看套餐包内容">
                <a className="a-link" onClick={() => this.handlePackageFixModalShow(record)}>{text}</a>
              </Tooltip>
            );
          }
          return text;
        },
        width: '17%',
      }, {
        title: '商品名称',
        dataIndex: 'name',
        key: 1,
        width: '28%',
        render: text => (
          <Ellipsis tooltip lines={1}>{text}</Ellipsis>
        ),
      }, {
        title: '商品类型',
        key: 2,
        dataIndex: 'type',
        render: text => checkProductType(text),
        width: '12%',
        align: 'center',
      }, {
        title: '单价',
        key: 3,
        dataIndex: 'goods',
        render: (goodsArr, record, index) => {
          if (!goodsArr) {
            return null;
          }
          return (
            <Select
              style={{ width: 150 }}
              value={record.selectedGoodsId}
              onChange={goodsId => this.handleGoodsSelectChange(index, goodsId)}
            >
              {
                goodsArr.map(item => (
                  <Select.Option key={item.id} value={item.id}>
                    {`¥${item.merchantPrice}/${item.chargeUnit}`}
                  </Select.Option>
                ))
              }
            </Select>
          );
        },
        width: '12%',
        align: 'center',
      }, {
        title: '数量',
        key: 4,
        dataIndex: 'quantity',
        width: '13%',
        render: (text, _, index) => {
          return (
            <Input
              style={{ width: 150 }}
              addonBefore={
                <Icon
                  type="minus"
                  className={styles.icon}
                  onClick={() => this.handleQuantityStepChange(index, 'minus')}
                />
              }
              addonAfter={
                <Icon
                  type="plus"
                  className={styles.icon}
                  onClick={() => this.handleQuantityStepChange(index, 'plus')}
                />
              }
              value={text}
              onChange={e => this.handleQuantityInputChange(index, e)}
            />
          );
        },
        align: 'center',
      }, {
        title: '小计',
        key: 5,
        dataIndex: 'subTotal',
        width: '13%',
        render: text => (
          <span style={{ fontWeight: 500 }}>{`¥${text}`}</span>
        ),
        align: 'center',
      }];
      return (
        <Card
          title={<Button type="primary" onClick={this.handleGoodsSelectorModalShow}>选择商品</Button>}
          style={{ marginTop: 10, marginBottom: 70 }}
        >
          <Table
            border={false}
            pagination={false}
            columns={goodsColumns}
            dataSource={formattedDataSource}
            rowKey={record => record.id}
          />
          {!goodsSelectorDestroy && getGoodsModal()}
          {!packageFixModalDestroy && getPackageFixModal()}
        </Card>
      );
    };

    // ##### Card3: 确认订单 #####
    const confirmInfoCard = () => {
      const columns = [{
        title: '商品名称',
        dataIndex: 'name',
        key: 1,
        width: '20%',
      }, {
        title: '商品编号',
        dataIndex: 'code',
        key: 2,
        width: '20%',
      }, {
        title: '商品类型',
        dataIndex: 'type',
        key: 3,
        align: 'center',
        render: text => checkProductType(text),
        width: '12%',
      }, {
        title: '单价',
        dataIndex: 'selectedPrice',
        key: 4,
        align: 'center',
        render: text => `¥${text}`,
        width: '12%',
      }, {
        title: '数量',
        dataIndex: 'quantity',
        key: 5,
        align: 'center',
        render: text => `×${text}`,
        width: '12%',
      }, {
        title: '单位',
        dataIndex: 'selectedChargeUnit',
        key: 6,
        align: 'center',
        width: '12%',
      }, {
        title: '小计',
        dataIndex: 'subTotal',
        key: 7,
        align: 'center',
        render: text => `¥${text}`,
        width: '12%',
      }];
      return (
        <div>
          <Card title="商品清单" style={{ marginTop: 10 }}>
            <Table
              bordered
              columns={columns}
              pagination={false}
              rowKey={record => record.id}
              dataSource={formattedDataSource}
            />
          </Card>
          <Card title="收货信息" style={{ marginTop: 10, marginBottom: 70 }}>
            <List
              bordered
              size="small"
              dataSource={[
                `终端账号: ${code || ''}`,
                `收货人: ${contactName || ''}`,
                `收货地址: ${address || ''}`,
                `手机号码: ${mobile || ''}`,
              ]}
              renderItem={item => <List.Item>{item}</List.Item>}
            />
          </Card>
        </div>
      );
    };

    // 步骤条配置
    const steps = [{
      title: '选择购买终端',
      stepKey: 0,
      icon: 'shop',
      content: terminalInfoCard(),
    }, {
      title: '选择商品',
      stepKey: 1,
      icon: 'environment',
      content: goodsSelectCard(),
    }, {
      title: '确认订单',
      stepKey: 2,
      icon: 'profile',
      content: confirmInfoCard(),
    }];

    return (
      <div>
        <Steps current={currentStep}>
          {steps.map((item, index) =>
            (
              <Steps.Step
                key={item.stepKey}
                title={item.title}
                icon={<Icon type={steps[index].icon} />}
              />
            )
          )}
        </Steps>
        {steps[currentStep].content}
        <FooterToolbar
          extra={
            <div>
              <span className={styles.quantity}>
                已选择&nbsp;
                <span style={{ color: '#f60', fontWeight: 500 }}>
                  {selectedGoods.length}
                </span>
                &nbsp;件商品
              </span>
              {/*
                <span className={styles.adjustPrice}>
                  <span style={{ color: '#2f7d0d' }}>
                    优惠:&nbsp;&nbsp;¥&nbsp;
                  </span>
                  <InputNumber
                    min={0}
                    max={totalPrice}
                    size="small"
                    value={adjustPrice}
                    onChange={this.handleAdjustPriceChange}
                  />
                </span>
              */}
              <span className={styles.totalPrice}>
                总价:&nbsp;&nbsp;&nbsp;
                <span style={{ color: '#f60', fontSize: 24 }}>
                  {`¥ ${toDecimal2(totalPrice - adjustPrice)}`}
                </span>
              </span>
            </div>
          }
          style={{ width: this.state.width }}
        >
          {
            (currentStep > 0) && (
              <Button onClick={this.prevStep}>
                {`上一步: ${steps[currentStep - 1].title}`}
              </Button>
            )
          }
          {/* 步骤一：选择终端 */}
          {
            (currentStep === 0) && (
              <Button
                type="primary"
                disabled={Object.keys(deliveryInfo).length === 0}
                onClick={this.nextStep}
              >
                {`下一步: ${steps[currentStep + 1].title}`}
              </Button>
            )
          }
          {/* 步骤二：选择产品 */}
          {
            (currentStep === 1) && (
              <Button
                type="primary"
                disabled={Object.keys(selectedGoods).length === 0}
                onClick={this.nextStep}
              >
                {`下一步: ${steps[currentStep + 1].title}`}
              </Button>
            )
          }
          {/* 步骤三：确认订单 */}
          {
            (currentStep === 2) && (
              <Button
                type="primary"
                onClick={() => this.handleSubmitOrder(formattedDataSource)}
              >
                确认下单
              </Button>
            )
          }
        </FooterToolbar>
      </div>
    );
  }
}