package foundation.data.rule;

import foundation.data.entity.Entity;
import foundation.data.meta.field.Field;
import foundation.handler.IMessageReporter;
import foundation.util.Util;

public class FieldValidateRule {

	public static String ErrorCode_Empty = "Error_Empty";
	public static String ErrorCode_Regex = "Error_Regex";
	private Field field;
	private boolean notEmpty;
	private String validateRegex;
	
	
	public FieldValidateRule(Field field) {
		this.field = field;
		this.notEmpty = !field.isNullable();
		this.validateRegex = field.getValidateRegex();
	}

	public static FieldValidateRule getInstance(Field field) {
		FieldValidateRule rule = null;
		
		if (!field.isNullable() || field.hasValidateRegex()) {
			rule = new FieldValidateRule(field);
			
		}

		return rule;
	}
	
	public boolean exec(Entity entity, IMessageReporter reporter) {
		boolean success = true;
		
		int idx = field.getIndexNo();
		boolean empty = entity.isEmptyValue(idx);
				
		//1. 非空校验
		if (notEmpty && empty) {
			success = false;
			
			if (reporter != null) {
				reporter.reportOneMessage("数据校验", field.getLabelChinese() + "不能为空");
			}
		}
		
		if (Util.isEmpty(validateRegex) || empty) {
			return success;
		}
		
		String value = entity.getString(idx);
		boolean match = value.matches(validateRegex);
		
		if (!match) {
			success = false;
			
			if (reporter != null) {
				reporter.reportOneMessage("数据校验", field.getLabelChinese() + "格式不对");
			}
		}
		
		return success;
	}
	
}