package foundation.clean;

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Pattern;

import foundation.data.entity.Entity;

public class Rule {
	private String id;
	private String parentId;
	private String expression;
	private List<String> patternList;
	private String resultValue;
	private boolean trimSpace;
	private boolean active;
	private int indexNo;
	private String remark;
	
	public void load(Entity entity) throws Exception {
		id = entity.getString("id");
		parentId = entity.getString("parent_id");
		resultValue = entity.getString("result_value");
		trimSpace = entity.getBoolean("is_trim_space", true);
		active = entity.getBoolean("is_active", true);
		indexNo = entity.getInteger("index_no", 1);
		remark = entity.getString("remark");
		expression = entity.getString("expression");
		if (trimSpace) {
			expression = expression.replace(" ", "");
		}

		patternList = new ArrayList<String>();
		getPatternList(expression);
	}
	
	private void getPatternList(String expression){
		String splitPattern = "[，|；|,]";
		expression = expression.replaceAll(splitPattern, ";");
		
		String[] patterns = expression.split(";");
		for (String pattern : patterns) {
			patternList.add(pattern);
		}
	}

	public String match(String value) throws Exception {
		if (trimSpace) {
			value = value.replace(" ", "");
		}

		// return result_value if match all pattern
		for (String pattern: patternList) {
			if (!Pattern.matches(pattern, value)) {
				return null;
			}
		}
		return resultValue;
	}
}