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/*
Licensed to the Apache Software Foundation (ASF) under one
or more contributor license agreements.  See the NOTICE file
distributed with this work for additional information
regarding copyright ownership.  The ASF licenses this file
to you under the Apache License, Version 2.0 (the
"License"); you may not use this file except in compliance
with the License.  You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing,
software distributed under the License is distributed on an
"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied.  See the License for the
specific language governing permissions and limitations
under the License.
*/

package com.ats.generator.variables.transform;

import java.time.LocalTime;
import java.time.format.DateTimeFormatter;
import java.time.format.DateTimeParseException;
import java.util.StringJoiner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import com.ats.executor.ActionTestScript;

public class TimeTransformer extends Transformer {

	private static final DateTimeFormatter TIME_FORMATTER = DateTimeFormatter.ofPattern("HH:mm:ss");
	private static final Pattern PATTERN_HOUR_TRANSFORM = Pattern.compile("(-?\\d+)([hms])");

	private int hour = 0;
	private int minute = 0;
	private int second = 0;

	public TimeTransformer() {} // Needed for serialization

	public TimeTransformer(String ... data) {
		if(data.length > 0){
			Matcher dataMatcher;
			for(String item : data){
				dataMatcher = PATTERN_HOUR_TRANSFORM.matcher(item);
				if(dataMatcher.find()){
					if("h".equals(dataMatcher.group(2))){
						setHour(getInt(dataMatcher.group(1)));
					}else if("m".equals(dataMatcher.group(2))){
						setMinute(getInt(dataMatcher.group(1)));
					}else if("s".equals(dataMatcher.group(2))){
						setSecond(getInt(dataMatcher.group(1)));
					}
				}
			}
		}
	}

	public static String getNowValue() {
		final LocalTime time = LocalTime.now();
		return time.format(TIME_FORMATTER);
	}

	@Override
	public String getJavaCode() {

		StringJoiner joiner = new StringJoiner(", ");
		if(hour != 0) {
			joiner.add("\"" + hour + "h\"");
		}

		if(minute != 0) {
			joiner.add("\"" + minute + "m\"");
		}

		if(second != 0) {
			joiner.add("\"" + second + "s\"");
		}

		final StringBuilder sb = new StringBuilder(", ").append(ActionTestScript.JAVA_TIME_FUNCTION_NAME);
		sb.append("(").append(joiner.toString()).append(")");
		return sb.toString();
	}

	@Override
	public String format(String data) {

		try {
			LocalTime time = LocalTime.parse(data, TIME_FORMATTER);
			time = time.plusHours(hour).plusMinutes(minute).plusSeconds(second);
			return time.toString();

		} catch (DateTimeParseException e) {}

		return "";
	}

	//--------------------------------------------------------
	// getters and setters for serialization
	//--------------------------------------------------------

	public int getHour() {
		return hour;
	}

	public void setHour(int hour) {
		this.hour = hour;
	}

	public int getMinute() {
		return minute;
	}

	public void setMinute(int minute) {
		this.minute = minute;
	}

	public int getSecond() {
		return second;
	}

	public void setSecond(int second) {
		this.second = second;
	}
}