import React, { useState, useEffect, useMemo, useCallback, memo } from 'react';
import { bitable, CurrencyCode, FieldType, ICurrencyField, ICurrencyFieldMeta } from '@lark-base-open/js-sdk';
import { Card, Modal, Checkbox, message } from 'antd';
import './App.css';

// 选项类型定义
interface OptionGroupDef {
  title: string;
  options: string[];
  required: boolean;
  level?: number;
  parentOption?: string;
  condition?: (checkedList: string[]) => boolean;
  resetOn?: string[];
  multiple?: boolean; // 新增：是否支持多选，默认为 false（单选）
}

// 选项分组配置
const OPTION_GROUPS: OptionGroupDef[] = [
  // 第一层：品牌选择
  {
    title: '品牌',
    options: ['PDS客户组', 'LWH客户组', 'PLT客户组', 'RBE客户组'],
    required: true,
    level: 1
  },
  
  // PDS和LWH共用的标签树
  {
    title: '单据类型',
    options: ['首单', '翻单'],
    required: true,
    level: 2,
    condition: (checkedList) => checkedList.includes('PDS') || checkedList.includes('LWH'),
    resetOn: ['PLT', 'RBE']
  },
  {
    title: '是否要打板',
    options: ['需要打板', '不需要打板'],
    required: false,
    level: 3,
    parentOption: '首单',
    condition: (checkedList) => (checkedList.includes('PDS')) && checkedList.includes('首单'),
    resetOn: ['翻单', 'PLT', 'RBE']
  },
  {
    title: '打板类型(多选)',
    options: ['复版', 'PP版','不用打版'],
    required: false,
    level: 3,
    parentOption: '首单',
    multiple: true,
    condition: (checkedList) => (checkedList.includes('LWH')) && checkedList.includes('首单'),
    resetOn: ['翻单', 'PLT', 'RBE']
  },
  {
    title: '翻单变动',
    options: ['无变动不需要修改', '有变动需要修改'],
    required: false,
    level: 3,
    parentOption: '翻单',
    condition: (checkedList) => (checkedList.includes('PDS') || checkedList.includes('LWH')) && checkedList.includes('翻单'),
    resetOn: ['首单', 'PLT', 'RBE']
  },
  {
    title: '特殊订单',
    options: ['换料寄面料样', '换料重新打板', '加色', '改尺寸重新打板'],
    required: false,
    level: 4,
    parentOption: '有变动需要修改',
    condition: (checkedList) => (checkedList.includes('PDS') || checkedList.includes('LWH')) && checkedList.includes('有变动需要修改'),
    resetOn: ['首单', '无变动不需要修改', 'PLT', 'RBE']
  },
  {
    title: '特殊订单',
    options: ['批大货布'],
    required: false,
    level: 4,
    parentOption: '无变动不需要修改',
    condition: (checkedList) => (checkedList.includes('LWH')) && checkedList.includes('无变动不需要修改'),
    resetOn: ['首单', '有变动需要修改', 'PLT', 'RBE']
  },
  {
    title: '批色样',
    options: ['寄成衣','寄色样'],
    required: true,
    level: 5,
    parentOption: '加色',
    condition: (checkedList) => (checkedList.includes('PDS') || checkedList.includes('LWH')) && checkedList.includes('加色'),
    resetOn: ['首单', '无变动不需要修改', '需要打板', '不需要打板', 'PLT', 'RBE']
  },
  {
    title: '批色样',
    options: ['要批色样', '不要批色样'],
    required: true,
    level: 4,
    parentOption: '不需要打板',
    condition: (checkedList) => (checkedList.includes('PDS') || checkedList.includes('LWH')) && checkedList.includes('首单') && checkedList.includes('不需要打板'),
    resetOn: ['翻单', '有变动需要修改', '无变动不需要修改', 'PLT', 'RBE']
  },
  {
    title: '品类',
    options: ['牛仔', '时装'],
    required: true,
    condition: (checkedList) => checkedList.includes('PDS') || checkedList.includes('LWH')
  },
  {
    title: '复杂度',
    options: ['简单款', '基础款', '复杂款'],
    required: true,
    condition: (checkedList) => checkedList.includes('PDS') || checkedList.includes('LWH')
  },
  {
    title: '二次工艺',
    options: ['绣花', '印花'],
    required: false,
    condition: (checkedList) => checkedList.includes('PDS') || checkedList.includes('LWH')
  },
  {
    title: '是否需要批船样',
    options: ['不需要批船样', '需要批船样'],
    required: true,
    condition: (checkedList) => checkedList.includes('PDS') || checkedList.includes('LWH')
  },
  {
    title: '运输方式',
    options: ['美国', '澳大利亚', '英国'],
    required: false,
    condition: (checkedList) => checkedList.includes('PDS') || checkedList.includes('LWH'),
    resetOn: ['PLT', 'RBE']
  },
  {
    title: '英国运输方式',
    options: [
      '英国-海运',
      '英国-空运 (直飞)',
      '英国-空运 (转机)',
      '英国-铁路(中欧班列)',
      '英国-卡航',
      '英国-卡空',
      '英国-卡车联运',
      '英国-海空联运'
    ],
    required: false,
    level: 2,
    parentOption: '英国',
    condition: (checkedList) => (checkedList.includes('PDS') || checkedList.includes('LWH')) && checkedList.includes('英国'),
    resetOn: ['美国', '澳大利亚', 'PLT', 'RBE']
  },
  {
    title: '美国运输方式',
    options: [
      '美国-海运慢船',
      '美国-海运快船',
      '美国-空运(直飞)'
    ],
    required: true,
    level: 2,
    parentOption: '美国',
    condition: (checkedList) => (checkedList.includes('PDS') || checkedList.includes('LWH')) && checkedList.includes('美国'),
    resetOn: ['英国', '澳大利亚', 'PLT', 'RBE']
  },
  {
    title: '澳大利亚运输方式',
    options: [
      '澳大利亚-海运',
      '澳大利亚-空运(直飞)'
    ],
    required: true,
    level: 2,
    parentOption: '澳大利亚',
    condition: (checkedList) => (checkedList.includes('PDS') || checkedList.includes('LWH')) && checkedList.includes('澳大利亚'),
    resetOn: ['美国', '英国', 'PLT', 'RBE']
  },
  {
    title: '面料特性',
    options: [
      '普通面料（纯棉、常规化纤）',
      '特殊面料（真丝、皮革、功能性面料）',
      '易损面料（薄纱、蕾丝）'
    ],
    required: false,
    condition: (checkedList) => checkedList.includes('PDS') || checkedList.includes('LWH')
  }
  
  // HELLOMOLLY和RBE品牌的标签树仍然为空
  // 后续可根据需要添加专用标签
];

const FABRIC_TEST_OPTIONS = ['需要面料测试', '不需要面料测试'];

// 优化：预计算选项集合，避免重复includes操作
const createOptionSets = (checkedList: string[]) => {
  const checkedSet = new Set(checkedList);
  return {
    checkedSet,
    hasFirstOrder: checkedSet.has('首单'),
    hasReorder: checkedSet.has('翻单'),
    hasNoChange: checkedSet.has('无变动不需要修改'),
    hasChange: checkedSet.has('有变动需要修改'),
    hasAddColor: checkedSet.has('加色'),
    hasNoPlate: checkedSet.has('不需要打板')
  };
};

// 优化：使用memo包装OptionGroup组件
interface OptionGroupProps {
  group: OptionGroupDef;
  checkedList: string[];
  onChange: (newList: string[]) => void;
  lockedOptions?: string[];
  level?: number;
}

const OptionGroup = memo<OptionGroupProps>(({ 
  group, 
  checkedList, 
  onChange, 
  lockedOptions = [],
  level = 1
}) => {
  // 使用配置中的 multiple 属性，默认为 false（单选）
  const isMulti = group.multiple || false;
  
  // 优化：使用useMemo缓存计算结果
  const groupChecked = useMemo(() => 
    checkedList.filter(v => group.options.includes(v)), 
    [checkedList, group.options]
  );
  
  const indentStyle = useMemo(() => ({
    marginLeft: level > 1 ? (level - 1) * 24 : 0,
    marginTop: level > 1 ? 8 : 0,
    borderLeft: level > 1 ? `${level > 2 ? 'dashed' : 'solid'} 2px #eee` : 'none',
    paddingLeft: level > 1 ? 12 : 0
  }), [level]);
  
  const titleColor = useMemo(() => {
    switch(level) {
      case 1: return '#000';
      case 2: return '#888';
      case 3: return '#b36d00';
      default: return '#888';
    }
  }, [level]);
  
  const options = useMemo(() => 
    group.options.map(opt => ({
      label: opt,
      value: opt,
      disabled: lockedOptions.includes(opt)
    })), 
    [group.options, lockedOptions]
  );
  
  const handleChange = useCallback((list: string[]) => {
    const others = checkedList.filter(v => !group.options.includes(v));
    let newList;
    if (isMulti) {
      // 多选模式：保留所有选中项
      newList = [...others, ...list];
    } else {
      // 单选模式：只保留最后选中的一项
      newList = [...others, list.slice(-1)[0]].filter(Boolean);
    }
    onChange(newList);
  }, [checkedList, group.options, isMulti, onChange]);
  
  return (
    <div key={group.title} style={{ ...indentStyle, marginBottom: 12 }}>
      <div style={{ fontWeight: 'bold', marginBottom: 4, color: titleColor }}>
        {group.title}
        {group.required && <span style={{ color: 'red', marginLeft: 4 }}>*</span>}
      </div>
      <Checkbox.Group
        options={options}
        value={groupChecked}
        onChange={handleChange}
      />
    </div>
  );
});

// 优化：使用memo包装OrderConfigSelector组件
interface OrderConfigSelectorProps {
  selectedRecordId: string | null;
  checkedList: string[];
  setCheckedList: (list: string[]) => void;
  onSubmit: (options: string[]) => void;
  onCancel: () => void;
  loading: boolean;
}

const OrderConfigSelector = memo<OrderConfigSelectorProps>(({ 
  selectedRecordId,
  checkedList,
  setCheckedList,
  onSubmit,
  onCancel,
  loading
}) => {
  // 优化：使用useMemo缓存可见的选项组
  const visibleGroups = useMemo(() => {
    return OPTION_GROUPS.filter(group => {
      if (!group.condition) return true;
      return group.condition(checkedList);
    });
  }, [checkedList]);
  
  // 优化：使用useCallback缓存事件处理函数
  const handleCheckedListChange = useCallback((newList: string[]) => {
    const addedOptions = newList.filter(opt => !checkedList.includes(opt));
    
    if (addedOptions.length > 0) {
      const resetGroups = OPTION_GROUPS.filter(group => 
        group.resetOn?.some(resetOpt => addedOptions.includes(resetOpt))
      );
      
      if (resetGroups.length > 0) {
        const resetGroupsSet = new Set(resetGroups);
        const filteredOptions = newList.filter(opt => {
          const group = OPTION_GROUPS.find(g => g.options.includes(opt));
          return !resetGroupsSet.has(group as OptionGroupDef);
        });
        setCheckedList(filteredOptions);
        return;
      }
    }
    
    setCheckedList(newList);
  }, [checkedList, setCheckedList]);
  
  // 优化：使用useCallback缓存验证函数
  const validateRequired = useCallback(() => {
    for (const group of OPTION_GROUPS) {
      if (group.required && group.condition?.(checkedList) !== false) {
        const has = checkedList.some(v => group.options.includes(v));
        if (!has) {
          message.error(`请至少选择一项【${group.title}】`);
          return false;
        }
      }
    }
    
    // 特殊验证：如果选择了"不需要打板"，必须选择是否批色样
    if (checkedList.includes('首单') && checkedList.includes('不需要打板')) {
      const hasColorSample = checkedList.some(v => v === '要批色样' || v === '不要批色样');
      if (!hasColorSample) {
        message.error('请选择是否要批色样');
        return false;
      }
    }
    
    return true;
  }, [checkedList]);
  
  const needFabricTestDialog = useCallback(() => {
    return !(checkedList.includes('翻单') && checkedList.includes('无变动不需要修改'));
  }, [checkedList]);
  
  const [showFabricTestModal, setShowFabricTestModal] = useState(false);
  const [fabricTestSelection, setFabricTestSelection] = useState<string[]>([]);
  const [isSubmitting, setIsSubmitting] = useState(false);
  const [finalOptions, setFinalOptions] = useState<string[]>([]);
  
  const handleSubmit = useCallback(() => {
    if (!validateRequired()) return;
    
    setFinalOptions([...checkedList]);
    
    if (needFabricTestDialog()) {
      setFabricTestSelection([]);
      setShowFabricTestModal(true);
    } else {
      onSubmit([...checkedList]);
    }
  }, [validateRequired, checkedList, needFabricTestDialog, onSubmit]);
  
  const handleFabricTestSubmit = useCallback(() => {
    if (fabricTestSelection.length === 0) {
      message.error('请选择是否需要面料测试');
      return;
    }
    
    setIsSubmitting(true);
    onSubmit([...finalOptions, ...fabricTestSelection]);
    setShowFabricTestModal(false);
  }, [fabricTestSelection, finalOptions, onSubmit]);
  
  const handleCancel = useCallback(() => {
    onCancel();
    setCheckedList([]);
  }, [onCancel, setCheckedList]);
  
  const handleFabricTestChange = useCallback((values: string[]) => {
    if (values.length > 0) {
      setFabricTestSelection([values[values.length - 1]]);
    } else {
      setFabricTestSelection([]);
    }
  }, []);
  
  useEffect(() => {
    if (!showFabricTestModal && isSubmitting) {
      setIsSubmitting(false);
    }
  }, [showFabricTestModal, isSubmitting]);
  
  return (
    <>
      <Modal
        title="订单配置"
        open={!!selectedRecordId}
        onOk={handleSubmit}
        onCancel={handleCancel}
        okText="确定"
        cancelText="取消"
        confirmLoading={loading}
      >
        {visibleGroups.map(group => (
          <OptionGroup 
            key={group.title}
            group={group}
            checkedList={checkedList}
            onChange={handleCheckedListChange}
            level={group.level}
          />
        ))}
      </Modal>
      
      <Modal
        title="面料测试"
        open={showFabricTestModal}
        onOk={handleFabricTestSubmit}
        onCancel={() => setShowFabricTestModal(false)}
        okText="确定"
        cancelText="取消"
        confirmLoading={isSubmitting}
      >
        <div>
          <p>请选择是否需要面料测试:</p>
          <Checkbox.Group
            options={FABRIC_TEST_OPTIONS}
            value={fabricTestSelection}
            onChange={handleFabricTestChange}
          />
        </div>
      </Modal>
    </>
  );
});

// 优化：主应用组件
const App: React.FC = () => {
  const [selectedRecordId, setSelectedRecordId] = useState<string | null>(null);
  const [checkedList, setCheckedList] = useState<string[]>([]);
  const [loading, setLoading] = useState(false);
  const [currentSelection, setCurrentSelection] = useState<{
    tableId: string | null;
    recordId: string | null;
  }>({ tableId: null, recordId: null });
  
  // 优化：缓存字段选项映射，避免重复查找
  const [fieldOptionsMap, setFieldOptionsMap] = useState<Map<string, {id: string, name: string}>>(new Map());
  
  // 优化：使用useCallback缓存函数
  const resetOptions = useCallback(() => {
    setSelectedRecordId(null);
    setCheckedList([]);
  }, []);
  
  const saveOptions = useCallback(async () => {
    if (!selectedRecordId || !currentSelection.tableId) {
      message.warning('没有有效的选中记录或表格信息');
      return;
    }
    
    setLoading(true);
    const FIELD_ID_TO_SAVE = 'fldTtRHwlo';

    try {
      const table = await bitable.base.getTableById(currentSelection.tableId);
      if (!table) {
        message.error('无法获取表格对象');
        return;
      }

      const field = await table.getFieldById(FIELD_ID_TO_SAVE);
      if (!field) {
        message.error('无法获取字段对象');
        return;
      }

      // 优化：只在字段选项映射为空时才重新获取
      let optionsMap = fieldOptionsMap;
      if (optionsMap.size === 0) {
        const fieldMeta = await field.getMeta();
        console.log('字段元数据:', fieldMeta);
        
        // 检查字段类型是否为多选或单选字段
        let fieldOptions = [];
        if (fieldMeta.type === FieldType.MultiSelect || fieldMeta.type === FieldType.SingleSelect) {
          fieldOptions = (fieldMeta.property as any).options || [];
        }
        
        optionsMap = new Map(fieldOptions.map(opt => [opt.name, opt]));
        setFieldOptionsMap(optionsMap);
      }

      let dataToSave = null;
      if (checkedList.length > 0) {
        console.log('字段中的所有选项:', Array.from(optionsMap.keys()));
        console.log('要保存的选项:', checkedList);
        
        // 优化：使用Map查找，O(1)时间复杂度
        dataToSave = checkedList.map(optionText => {
          const matchedOption = optionsMap.get(optionText);
          if (!matchedOption) {
            console.warn(`未找到选项 "${optionText}" 对应的ID`);
            console.log('可能的匹配选项:', Array.from(optionsMap.keys()).filter(key => 
              key.includes(optionText) || optionText.includes(key)
            ));
            return null;
          }
          console.log(`找到匹配: "${optionText}" -> ID: ${matchedOption.id}`);
          return {
            id: matchedOption.id,
            text: matchedOption.name
          };
        }).filter(Boolean);
      }

      console.log('准备保存的数据:', dataToSave);
      await field.setValue(selectedRecordId, dataToSave);
      
      const savedValue = await field.getValue(selectedRecordId);
      console.log('保存后的字段值:', savedValue);
      
      if (savedValue) {
        console.log('数据成功写入单元格');
        message.success('已保存选项');
      } else {
        throw new Error('数据写入后未能读取到值');
      }

    } catch (e: any) {
      console.error('保存失败:', e);
      message.error(`保存失败: ${e.message || '未知错误'}`);
    } finally {
      setLoading(false);
      resetOptions();
      setCurrentSelection({ tableId: null, recordId: null });
    }
  }, [selectedRecordId, currentSelection.tableId, checkedList, fieldOptionsMap, resetOptions]);
  
  useEffect(() => {
    const unsubscribe = bitable.base.onSelectionChange(async (event: any) => {
      try {
        const { data } = event;
        if (data && data.tableId && data.recordId) {
          const isNewCell = (
            data.tableId !== currentSelection.tableId || 
            data.recordId !== currentSelection.recordId
          );
          
          if (isNewCell) {
            resetOptions();
            setCurrentSelection({
              tableId: data.tableId,
              recordId: data.recordId
            });
            // 优化：切换单元格时清空字段选项缓存
            setFieldOptionsMap(new Map());
          }
          
          const table = await bitable.base.getTableById(data.tableId);
          const cellValue = await table.getCellValue('fldTtRHwlo', data.recordId);
          setSelectedRecordId(data.recordId);
          
          if (typeof cellValue === 'string' && cellValue.trim() !== '') {
            setCheckedList(cellValue.split(',').map(item => item.trim())); 
          } else if (Array.isArray(cellValue)) {
            setCheckedList(cellValue.map(item => String(item)));
          } else {
            setCheckedList([]); 
          }
        }
      } catch (e: any) {
        message.error('获取选中记录失败: ' + (e.message || e));
      }
    });
    return unsubscribe;
  }, [currentSelection, resetOptions]);
  
  return (
    <div style={{ padding: '16px' }}>
      <Card>
        <div>请先在多维表格中点击一个单元格以加载配置。</div>
      </Card>
      
      <OrderConfigSelector
        selectedRecordId={selectedRecordId}
        checkedList={checkedList}
        setCheckedList={setCheckedList}
        onSubmit={saveOptions}
        onCancel={resetOptions}
        loading={loading}
      />
    </div>
  );
};

export default App;