package org.monkey.comparator;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Properties;

public abstract class Constants {
	public static int MAX_INT;
	public static int MIN_INT;
	public static boolean ENABLE_VALUE_CLASSES;
	public static int LINE_NUMBER_DIFFERENCE_THRESHOLD;
	
	/* Features' scores */
	public static double GENERAL_PROPERTIES_FEATURE_SCORE;
	public static double STACK_TRACE_FEATURE_SCORE;
	
	/* Weights for feature: Bug General Properties */
	public static double BUG_CATEGORY_WEIGHT;
	public static double LINE_NUMBER_WEIGHT;
	public static double BUG_FUNCTION_NAME_WEIGHT;
	public static double FILE_NAME_WEIGHT;
	
	/* Weights for feature: Stack-Trace */
	public static double FUNCTION_SEMANTICS_WEIGHT; // Weight of all function semantics in the stack-trace (function name, file name, line number)
	public static double EXPRESSIONS_WEIGHT; // Weight of all expressions in the stack-trace 
	
	public static double FUNCTION_NAME_WEIGHT; // Within the function semantics
	public static double FUNCTION_LINE_WEIGHT;
	public static double FUNCTION_FILE_NAME;
	
	public static double EXPRESSION_SYTNAX_WEIGHT; // Within the expressions of the function
	public static double EXPRESSION_VALUE_WEIGHT;
	
	public static void setUpConstants(String propertiesFilePath) {
		Properties properties = new Properties();
		try {
			properties.load(new FileInputStream(propertiesFilePath));
			MAX_INT = Integer.parseInt(properties.getProperty("MAX_INT"));
			MIN_INT = Integer.parseInt(properties.getProperty("MIN_INT"));
			ENABLE_VALUE_CLASSES = Boolean.parseBoolean(properties.getProperty("ENABLE_VALUE_CLASSES"));
			LINE_NUMBER_DIFFERENCE_THRESHOLD = Integer.parseInt(properties.getProperty("LINE_NUMBER_DIFFERENCE_THRESHOLD"));
			GENERAL_PROPERTIES_FEATURE_SCORE = Double.parseDouble(properties.getProperty("GENERAL_PROPERTIES_FEATURE_SCORE"));
			STACK_TRACE_FEATURE_SCORE = Double.parseDouble(properties.getProperty("STACK_TRACE_FEATURE_SCORE"));
			BUG_CATEGORY_WEIGHT = Double.parseDouble(properties.getProperty("BUG_CATEGORY_WEIGHT"));
			LINE_NUMBER_WEIGHT = Double.parseDouble(properties.getProperty("LINE_NUMBER_WEIGHT"));
			BUG_FUNCTION_NAME_WEIGHT = Double.parseDouble(properties.getProperty("BUG_FUNCTION_NAME_WEIGHT"));
			FILE_NAME_WEIGHT = Double.parseDouble(properties.getProperty("FILE_NAME_WEIGHT"));
			FUNCTION_SEMANTICS_WEIGHT = Double.parseDouble(properties.getProperty("FUNCTION_SEMANTICS_WEIGHT"));
			EXPRESSIONS_WEIGHT = Double.parseDouble(properties.getProperty("EXPRESSIONS_WEIGHT"));
			FUNCTION_NAME_WEIGHT = Double.parseDouble(properties.getProperty("FUNCTION_NAME_WEIGHT"));
			FUNCTION_LINE_WEIGHT = Double.parseDouble(properties.getProperty("FUNCTION_LINE_WEIGHT"));
			FUNCTION_FILE_NAME = Double.parseDouble(properties.getProperty("FUNCTION_FILE_NAME"));
			EXPRESSION_SYTNAX_WEIGHT = Double.parseDouble(properties.getProperty("EXPRESSION_SYTNAX_WEIGHT"));
			EXPRESSION_VALUE_WEIGHT = Double.parseDouble(properties.getProperty("EXPRESSION_VALUE_WEIGHT"));
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			System.err.println("Fatal error: unable to read properties. Entomologist will exit now.");
			e.printStackTrace();
			System.exit(1);
		}
	}
	
}