/*
 * Copyright 2008 Wishnu Prasetya.
 *
 * This file is part of T2.
 * T2 is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License (GPL) as published by the
 * Free Software Foundation; either version 3 of the License, or any
 * later version.
 * 
 * T2 is distributed in the hope that it will be useful, but WITHOUT ANY
 * WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * for more details.
 *
 * A copy of the GNU General Public License can be found in T2 distribution.
 * If it is missing, see http://www.gnu.org/licenses.
 */

package t2ext.weaver.utils;

/**
 * @author Maaike Gerritsen
 */
public class Template {
	public static String getPackage() {
		return "package t2ext.weaver;\n\n";
	}

	public static String getImports() {
		StringBuilder imports = new StringBuilder();
		imports.append("import java.util.List;\n");
		imports.append("import t2ext.weaver.utils.WeaverMethods;\n\n");
		return imports.toString();
	}

	public static String getClassOpener() {
		return "public aspect Weaver {\n";
	}

	public static String getCloseBracket() {
		return "}\n\n";
	}

	public static String getFieldAuxMethods() {
		return "\t private WeaverMethods _auxMethods;\n";
	}

	public static String getInitialisationAdvice() {
		StringBuilder builder = new StringBuilder();
		builder.append("\t before() : initialisation(){\n");
		builder.append("\t \t if (_auxMethods == null) { \n");
		builder.append("\t \t \t _auxMethods = new WeaverMethods();\n");
		builder.append("\t \t " + getCloseBracket());
		builder.append("\t " + getCloseBracket());
		return builder.toString();
	}

	public static String getInitialisationPointCut(String className) {
		StringBuilder builder = new StringBuilder();
		builder.append("\t pointcut initialisation() : initialization(");
		builder.append(className);
		builder.append(".new(..)); \n \n");
		return builder.toString();
	}

	public static String getPointCut(String methodName, int pointCutID) {
		StringBuilder builder = new StringBuilder();
		builder.append("\t pointcut weave");
		builder.append(pointCutID);
		builder.append("() : execution(* ");
		builder.append(methodName);
		builder.append("); \n \n");
		return builder.toString();
	}

	public static String getAroundPointcut(String methodName, int id) {
		StringBuilder builder = new StringBuilder();
		builder.append("\t pointcut aroundMethod");
		builder.append(id);
		builder.append("() : withincode(* ");
		builder.append(methodName);
		builder.append("); \n \n");
		return builder.toString();
	}

	public static String getAroundAdvice(String methodName, int id) {
		StringBuilder builder = new StringBuilder();
		builder.append("\t Object around() : aroundMethod");
		builder.append(id);
		builder.append("() { \n");
		builder.append("\t \t Object obj = thisJoinPoint.getTarget(); \n");
		builder.append("\t \t if(_auxMethods.findPath(\"" + methodName + "\")){\n");
		builder.append("\t \t \t obj = proceed();\n");
		builder.append("\t \t } \n");
		builder.append("\t \t return obj; \n");
		builder.append("\t " + getCloseBracket());
		return builder.toString();
	}

	public static String getBeforeAdvice(String methodName, int pointCutID,
			boolean endMethod) {
		StringBuilder builder = new StringBuilder();
		builder.append("\t before() : weave");
		builder.append(pointCutID);
		builder.append("() { \n");
		builder.append("\t \t if (_auxMethods == null) \n");
		builder.append("\t \t \t _auxMethods = new WeaverMethods(); \n");
		builder.append("\t \t _auxMethods.startPathList(\"");
		builder.append(methodName);
		builder.append("\"); \n");
		if (endMethod) {
			builder.append("\t \t _auxMethods.getPathToFindFromXML(");
			builder.append("thisJoinPoint.toLongString()");
			builder.append("); \n");
		}
		builder.append("\t " + getCloseBracket());
		return builder.toString();
	}

	public static String getAdvice(String parentName, String methodName,
			int id, boolean endMethod) {
		StringBuilder builder = new StringBuilder();
		builder.append("\t before() : weave");
		builder.append(id);
		builder.append("() { \n");
		builder.append("\t \t int id = WeaverMethods.getIdFromMethodName(thisJoinPoint.toLongString()); \n");
		builder.append("\t \t if(id!=(-1)){ \n");
		builder.append("\t \t \t _auxMethods.addToList(\"");
		builder.append(methodName);
		builder.append("\",id); \n");
		if (endMethod) {
			builder.append("\t \t \t _auxMethods.checkList(\"");
			builder.append(methodName + "\",");
			builder.append("\"" + parentName + "\"");
			builder.append(");\n");
		}
		builder.append("\t \t } \n");
		builder.append("\t " + getCloseBracket());
		return builder.toString();
	}

	public static String getAfterAdvice(String methodName, int id,
			boolean endMethod) {
		StringBuilder builder = new StringBuilder();
		builder.append("\t after() : weave" + id + "() { \n");
		if (endMethod)
			builder.append("\t \t if(_auxMethods.findPath(thisJoinPoint.toLongString())){\n");
		builder.append("\t \t \t List<Integer> list = _auxMethods.getCompletePathList(\"");
		builder.append(methodName);
		builder.append("\");\n");
		builder.append("\t \t \t if(list!=null){ \n");
		builder.append("\t \t \t \t WeaverMethods.findPath(thisJoinPoint.toLongString(),list); \n");
		builder.append("\t \t \t } \n");
		if (endMethod)
			builder.append("\t \t } \n");
		builder.append("\t " + getCloseBracket());
		return builder.toString();
	}

}