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package com.pig4cloud.plugin.excel;

import com.alibaba.excel.converters.Converter;
import com.pig4cloud.plugin.excel.aop.ResponseExcelReturnValueHandler;
import com.pig4cloud.plugin.excel.config.ExcelConfigProperties;
import com.pig4cloud.plugin.excel.enhance.DefaultWriterBuilderEnhancer;
import com.pig4cloud.plugin.excel.enhance.WriterBuilderEnhancer;
import com.pig4cloud.plugin.excel.handler.ManySheetWriteHandler;
import com.pig4cloud.plugin.excel.handler.SheetWriteHandler;
import com.pig4cloud.plugin.excel.handler.SingleSheetWriteHandler;
import lombok.RequiredArgsConstructor;
import org.springframework.beans.factory.ObjectProvider;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.util.List;

/**
 * @author Hccake 2020/10/28
 * @version 1.0
 */
@RequiredArgsConstructor
@Configuration
public class ExcelHandlerConfiguration {

	private final ExcelConfigProperties configProperties;

	private final ObjectProvider>> converterProvider;

	/**
	 * ExcelBuild增强
	 * @return DefaultWriterBuilderEnhancer 默认什么也不做的增强器
	 */
	@Bean
	@ConditionalOnMissingBean
	public WriterBuilderEnhancer writerBuilderEnhancer() {
		return new DefaultWriterBuilderEnhancer();
	}

	/**
	 * 单sheet 写入处理器
	 */
	@Bean
	@ConditionalOnMissingBean
	public SingleSheetWriteHandler singleSheetWriteHandler() {
		return new SingleSheetWriteHandler(configProperties, converterProvider, writerBuilderEnhancer());
	}

	/**
	 * 多sheet 写入处理器
	 */
	@Bean
	@ConditionalOnMissingBean
	public ManySheetWriteHandler manySheetWriteHandler() {
		return new ManySheetWriteHandler(configProperties, converterProvider, writerBuilderEnhancer());
	}

	/**
	 * 返回Excel文件的 response 处理器
	 * @param sheetWriteHandlerList 页签写入处理器集合
	 * @return ResponseExcelReturnValueHandler
	 */
	@Bean
	@ConditionalOnMissingBean
	public ResponseExcelReturnValueHandler responseExcelReturnValueHandler(
			List sheetWriteHandlerList) {
		return new ResponseExcelReturnValueHandler(sheetWriteHandlerList);
	}

}