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/**
 * Copyright 2013-2015 JueYue ([email protected])
 *   
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cn.afterturn.easypoi.excel;

import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.util.List;

import cn.afterturn.easypoi.handler.inter.IReadHandler;
import org.apache.poi.util.IOUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.result.ExcelImportResult;
import cn.afterturn.easypoi.excel.imports.ExcelImportService;
import cn.afterturn.easypoi.excel.imports.sax.SaxReadExcel;
import cn.afterturn.easypoi.exception.excel.ExcelImportException;

/**
 * Excel 导入工具
 * 
 * @author JueYue
 *  2013-9-24
 * @version 1.0
 */
@SuppressWarnings({ "unchecked" })
public class ExcelImportUtil {

    private ExcelImportUtil() {
    }

    private static final Logger LOGGER = LoggerFactory.getLogger(ExcelImportUtil.class);

    /**
     * Excel 导入 数据源本地文件,不返回校验结果 导入 字 段类型 Integer,Long,Double,Date,String,Boolean
     * 
     * @param file
     * @param pojoClass
     * @param params
     * @return
     */
    public static  List importExcel(File file, Class pojoClass, ImportParams params) {
        FileInputStream in = null;
        try {
            in = new FileInputStream(file);
            return new ExcelImportService().importExcelByIs(in, pojoClass, params, false).getList();
        } catch (ExcelImportException e) {
            throw new ExcelImportException(e.getType(), e);
        } catch (Exception e) {
            LOGGER.error(e.getMessage(), e);
            throw new ExcelImportException(e.getMessage(), e);
        } finally {
            IOUtils.closeQuietly(in);
        }
    }

    /**
     * Excel 导入 数据源IO流,不返回校验结果 导入 字段类型 Integer,Long,Double,Date,String,Boolean
     * 
     * @param inputstream
     * @param pojoClass
     * @param params
     * @return
     * @throws Exception
     */
    public static  List importExcel(InputStream inputstream, Class pojoClass,
                                          ImportParams params) throws Exception {
        return new ExcelImportService().importExcelByIs(inputstream, pojoClass, params, false).getList();
    }

    /**
     * Excel 导入 数据源IO流 字段类型 Integer,Long,Double,Date,String,Boolean
     * 支持校验,支持Key-Value
     * 
     * @param inputstream
     * @param pojoClass
     * @param params
     * @return
     * @throws Exception
     */
    public static  ExcelImportResult importExcelMore(InputStream inputstream,
                                                             Class pojoClass,
                                                             ImportParams params) throws Exception {
        return new ExcelImportService().importExcelByIs(inputstream, pojoClass, params, true);
    }

    /**
     * Excel 导入 数据源本地文件 字段类型 Integer,Long,Double,Date,String,Boolean
     * 支持校验,支持Key-Value
     * @param file
     * @param pojoClass
     * @param params
     * @return
     */
    public static  ExcelImportResult importExcelMore(File file, Class pojoClass,
                                                             ImportParams params) {
        FileInputStream in = null;
        try {
            in = new FileInputStream(file);
            return new ExcelImportService().importExcelByIs(in, pojoClass, params, true);
        } catch (ExcelImportException e) {
            throw new ExcelImportException(e.getType(), e);
        } catch (Exception e) {
            LOGGER.error(e.getMessage(), e);
            throw new ExcelImportException(e.getMessage(), e);
        } finally {
            IOUtils.closeQuietly(in);
        }
    }

    /**
     * Excel 通过SAX解析方法,适合大数据导入,不支持图片
     * 导入 数据源本地文件,不返回校验结果 导入 字 段类型 Integer,Long,Double,Date,String,Boolean
     * 
     * @param inputstream
     * @param pojoClass
     * @param params
     * @param handler
     */
    public static void importExcelBySax(InputStream inputstream, Class pojoClass,
                                        ImportParams params, IReadHandler handler) {
        new SaxReadExcel().readExcel(inputstream, pojoClass, params, handler);
    }

}