package foundation.data.meta.field;

import org.apache.logging.log4j.LogManager;
import org.apache.logging.log4j.Logger;

import foundation.data.entity.DictionaryTranslator;
import foundation.json.IJSONWriter;
import foundation.translator.ITranslator;
import foundation.util.Util;

public abstract class FieldWriter {
	
    protected static Logger logger;
	protected String fieldName;
	protected int index;
	protected ITranslator translator;
	
	
	static {
		logger = LogManager.getLogger(FieldWriter.class);
	}
	
	public FieldWriter(String fieldName, int index, ITranslator translator) {
		this.fieldName = fieldName;
		this.index = index;
		this.translator = translator;
	}
	
	public static FieldWriter newInstance(String fieldName, int index, ITranslator translator, FieldExtension extension) {
    	//1. 根据原始值输出的 Writer
		if (extension == null) {
			return new FieldValueWriter(fieldName, index, translator);
		}
		
		String dictionary = extension.getTranslator();
 		if (Util.isEmpty(dictionary)) {
    		return new FieldValueWriter(fieldName, index, translator);
    	}
		
		//2. 不输出内容的 Writer
    	if ("ignore".equalsIgnoreCase(dictionary)) {
    		return new FieldIgnoreWriter(fieldName, index, translator);
    	}
    	
    	//3. 需要进行字典翻译的 Writer()
    	dictionary = dictionary.replace(";", ",").replace("；", ",").replace("，", ",");
    	String[] segments = dictionary.split(",");
    	
    	DictionaryTranslator dictionaryTranslator = DictionaryTranslator.getInstance(segments[0].trim());
		if (dictionaryTranslator == null) {
			logger.error("error load field writer: {}", segments[0]);
			return new FieldValueWriter(fieldName, index, translator);
		}
		
		FieldWriter writer = new FieldTranslateWriter(fieldName, index, translator, segments[1].trim(), dictionaryTranslator, segments.length > 2);
		return writer;
	}
	
	public abstract void write(Object[] dataArray, IJSONWriter writer, boolean writeNull);

	public abstract boolean hasDictionaryTranslator();
	
	public abstract boolean includeOrighinal();

	public abstract Field getTargetField();

	public abstract void setActive(boolean value);

	public abstract Object getValue(Object value);

}