package jcgp.backend.resources;

import java.util.Random;

import jcgp.backend.function.Function;
import jcgp.backend.function.FunctionSet;
import jcgp.backend.resources.parameters.IntegerParameter;

/**
 * 
 * The resources class encapsulates all of the resources based on which the program operates.
 * Each instance of JCGP contains a single instance of Resources, which gets passed to the selected
 * modules as the program executes.
 * 
 * @author Eduardo Pedroni
 *
 */
public class Resources {
	protected IntegerParameter rows, columns, inputs, outputs, populationSize,
			levelsBack, currentGeneration, generations, currentRun, runs,
			arity, seed, reportInterval;

	protected Random numberGenerator = new Random();
	protected FunctionSet functionSet;
	// GUI console
	protected Console console;
	
	/**
	 * @return the rows
	 */
	public int rows() {
		return rows.get();
	}

	/**
	 * @return the columns
	 */
	public int columns() {
		return columns.get();
	}

	/**
	 * @return the inputs
	 */
	public int inputs() {
		return inputs.get();
	}

	/**
	 * @return the outputs
	 */
	public int outputs() {
		return outputs.get();
	}

	/**
	 * @return the populationSize
	 */
	public int populationSize() {
		return populationSize.get();
	}

	/**
	 * @return the levelsBack
	 */
	public int levelsBack() {
		return levelsBack.get();
	}

	/**
	 * @return the nodes
	 */
	public int nodes() {
		return columns.get() * rows.get();
	}

	/**
	 * @return the currentGeneration
	 */
	public int currentGeneration() {
		return currentGeneration.get();
	}

	/**
	 * @return the generations
	 */
	public int generations() {
		return generations.get();
	}

	/**
	 * @return the currentRun
	 */
	public int currentRun() {
		return currentRun.get();
	}

	/**
	 * @return the runs
	 */
	public int runs() {
		return runs.get();
	}

	/**
	 * @return the arity
	 */
	public int arity() {
		return arity.get();
	}

	/**
	 * @return the seed
	 */
	public int seed() {
		return seed.get();
	}

	/**
	 * @return the report interval
	 */
	public int reportInterval() {
		return reportInterval.get();
	}
	
	/*
	 * Utility functions
	 */
	public int getRandomInt(int limit) {
		return numberGenerator.nextInt(limit);
	}
	
	public double getRandomDouble(int limit) {
		return numberGenerator.nextDouble() * limit;
	}
	
	public double getRandomDouble() {
		return numberGenerator.nextDouble();
	}
	
	/*
	 * FunctionSet functions
	 */
	public Function getRandomFunction() {
		Function f = functionSet.getAllowedFunction(numberGenerator.nextInt(functionSet.getAllowedFunctionCount()));
		return f;
	}

	public Function getFunction(int index) {
		return functionSet.getAllowedFunction(index);
	}
	
	/**
	 * @return the functionSet
	 */
	public FunctionSet getFunctionSet() {
		return functionSet;
	}
	
	public int getFunctionIndex(Function function) {
		for (int i = 0; i < functionSet.getTotalFunctionCount(); i++) {
			if (function == functionSet.getFunction(i)) {
				return i;
			}
		}
		// not found, default to 0
		return 0;
	}
	
	/*
	 * Console functionality
	 * These are affected by parameter report interval
	 */
	public void reportln(String s) {
		if (reportInterval.get() > 0) {
			if (currentGeneration.get() % reportInterval.get() == 0) {
				System.out.println(s);
				if (console != null) {
					console.println(s);
				}
			}
		}
	}
	
	public void report(String s) {
		if (reportInterval.get() > 0) {
			if (currentGeneration.get() % reportInterval.get() == 0) {
				System.out.print(s);
				if (console != null) {
					console.print(s);
				}
			}
		}
	}
	
	/*
	 * Console functionality
	 * These are not affected by parameter report interval
	 */
	public void println(String s) {
		System.out.println(s);
		if (console != null) {
			console.println(s);
		}
	}
	
	public void print(String s) {
		System.out.print(s);
		if (console != null) {
			console.print(s);
		}
	}
}