/*
 * 导出相关工具（最小落地版）
 * 仅抽离现有 calcPageTemplate 的导出格式化逻辑，避免页面过重
 */

import { ProColumns } from '@ant-design/pro-components';
import exportTableToExcel from './tableToExcel';
import { formatMoneyNumber, formatToPercentage } from './format';

export interface ExportOptions {
  // 页面 key，用于处理特殊格式化
  calcPageKey?: string;
  // 是否为树形数据时需要缩进的列
  indentColumn?: string;
}

/**
 * 根据当前列与数据，进行必要的格式化与树形缩进，并导出为 Excel
 * 注意：本方法内的“wholeHospCostCalculate”逻辑与原实现保持一致，避免行为变化
 */
export function exportCalcPageDataToExcel(
  columns: ProColumns[],
  totalData: any[],
  options: ExportOptions = {}
) {
  const { calcPageKey, indentColumn } = options;

  // 生成表头
  const headers: { [key: string]: any } = {};
  columns.forEach((a: any) => {
    headers[`${a.dataIndex}`] = a.title;
  });

  // 列配置索引，便于判断数值列
  const columnMap = new Map<string, any>();
  (columns as any[])?.forEach?.((c) => {
    if (c && c.dataIndex) columnMap.set(String(c.dataIndex), c);
  });

  // 递归处理数据（支持 children），并为 indentColumn 添加缩进
  const data: any[] = [];
  const processData = (items: any[], level: number = 0) => {
    items.forEach(item => {
      const row: { [key: string]: any } = {};
      Object.keys(headers).forEach(key => {
        if (indentColumn && key === indentColumn) {
          // 使用 Unicode 不可见空格来缩进
          row[`${key}`] = `${'\u00A0'.repeat(level * 4)}${item[`${key}`]}`;
        } else if (item.children && item.children.length > 0 && (calcPageKey !== 'wholeHospCostCalculate')) {
          // 非全院损益时，有 children 的父节点导出为空字符串
          row[`${key}`] = '';
        } else {
          if (calcPageKey === 'wholeHospCostCalculate') {
            if (key === 'amount') {
              const { decimalPlace, permil, dataType, children, calcType } = item;
              if (children && children.length > 0 && calcType === '0') {
                row[`${key}`] = '';
              } else if (dataType === 2) {
                row[`${key}`] = typeof item[`${key}`] === 'number' && !isNaN(item[`${key}`])
                  ? `${(item[`${key}`] * 100).toFixed(decimalPlace || 2)}%`
                  : item[`${key}`];
              } else {
                const formatOptions = {
                  decimalPlaces: decimalPlace !== undefined ? decimalPlace : 2,
                  useThousandSeparator: permil === 1,
                };
                row[`${key}`] = formatMoneyNumber(item[`${key}`], formatOptions);
              }
            } else if (key === 'percent') {
              const { children, calcType } = item;
              row[`${key}`] = (children && children.length > 0 && calcType === '0')
                ? ''
                : formatToPercentage(item[`${key}`]);
            } else {
              row[`${key}`] = item[`${key}`];
            }
          } else if (calcPageKey === 'deptDirectMedicalCost' || calcPageKey === 'deptFullDirectCost' || calcPageKey === 'hospitalVisitCostComposition' || calcPageKey === 'hospitalDeptVisitCost' || calcPageKey === 'deptCostAllocationSummary' || calcPageKey === 'hospitalBedDayCostComposition') {
            // 这两个页面导出需要默认启用千分号，并按行的 decimalPlace 控制小数位
            const col = columnMap.get(key);
            const isNumericColumn = col && (col.align === 'right');
            if (isNumericColumn) {
              const decimalPlaces = (typeof item?.decimalPlace === 'number') ? item.decimalPlace : 2;
              row[`${key}`] = formatMoneyNumber(item[`${key}`], { decimalPlaces, useThousandSeparator: true });
            } else {
              row[`${key}`] = item[`${key}`];
            }
          } else {
            row[`${key}`] = item[`${key}`];
          }
        }
      });

      data.push(row);
      if (item.children && item.children.length > 0) {
        processData(item.children, level + 1);
      }
    });
  };

  processData(totalData);

  // 根据页面 key 设定导出文件名
  const fileNameMap: Record<string, string> = {
    wholeHospCostCalculate: '全院损益报表',
    projectCostCalc: '项目成本计算',
    deptDirectMedicalCost: '医院科室直接成本表（医疗成本）',
    deptFullDirectCost: '医院科室直接成本表（全成本）',
    clinicalDeptMedicalCost: '临床服务类科室全成本（医疗成本）',
    clinicalDeptFullCost: '临床服务类科室全成本（全成本）',
    clinicalDeptFullCostAnalysis: '临床服务类科室全成本构成分析表',
    deptCostAllocationSummary: '医院科室成本分摊汇总表',
    hospitalVisitCostComposition: '医院诊次成本构成表',
    hospitalBedDayCostComposition: '医院床日成本构成表',
  };
  const fileName = (calcPageKey && fileNameMap[calcPageKey]) ? fileNameMap[calcPageKey] : '项目成本计算';
  exportTableToExcel(data, columns as any[], fileName);
}