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package org.fugerit.java.doc.tool.handler;

import java.io.File;
import java.io.FileWriter;
import java.io.Writer;
import java.util.Properties;
import java.util.function.Consumer;

import org.fugerit.java.core.cfg.ConfigRuntimeException;
import org.fugerit.java.core.function.SafeFunction;
import org.fugerit.java.core.lang.helpers.StringUtils;
import org.fugerit.java.doc.freemarker.tool.GenerateStub;

import lombok.extern.slf4j.Slf4j;

@Slf4j
public class GenerateStubHandler implements Consumer {
	
	public static final String ARG_OUTPUT_FILE = "output";
	
	public static final Consumer EX_HANDLER = e -> { throw new ConfigRuntimeException( "Error generating stub "+e, e ); };
	
	@Override
	public void accept(Properties t) {
		String output = t.getProperty( ARG_OUTPUT_FILE );
		if ( StringUtils.isEmpty( output ) ) {
			throw new ConfigRuntimeException( "Required parameter : "+ARG_OUTPUT_FILE );
		}
		SafeFunction.apply( () -> {
			log.info( "output file path : {}", output );
			try ( Writer w = new FileWriter( new File( output ) ) ) {
				GenerateStub.generate( w, t );
			}
		}, EX_HANDLER );
	} 

}