package p1Algoritmia;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;
import java.lang.reflect.Method;

public class AlgorithmsBenchmark {

    public void test0 (String output) {
        FileWriter file = null;
        PrintWriter pw;

        try
        {
            file = new FileWriter(output);
            pw = new PrintWriter(file);

            writestuff(pw);

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (file != null)
                try {
                    file.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
    }

    private void writestuff (PrintWriter pw) {
        pw.println("1, 10");
        pw.println("2, 20");
        pw.println("3, 30");
        pw.println("4, 40");
    }

    //Linear, quadratic, cubic
    public void test1 (String output, int StartN,  int EndN) {
        //
        Algorithms alg = new Algorithms();
        long tInicial=0, tFinal=0;
        FileWriter file = null;
        PrintWriter pw;

        //
        try {
            file = new FileWriter(output + "Linear.txt");
            pw = new PrintWriter (file);

            //Linear
            for (int i = StartN; i<=EndN; i++) {
                tInicial = System.currentTimeMillis();
                alg.linear(i);
                tFinal = System.currentTimeMillis();
                pw.println(i + ", " + (tFinal - tInicial));
            }
            file.close();

            //Quadratic
            file = new FileWriter(output + "Quadratic.txt");
            pw = new PrintWriter(file);
            for (int i = StartN; i <= EndN; i++){
                tInicial = System.currentTimeMillis();
                alg.quadratic(i);
                tFinal = System.currentTimeMillis();
                pw.println(i + ", " + (tFinal - tInicial));
            }
            file.close();

            //Cubic
            file = new FileWriter(output + "Cubic.txt");
            pw = new PrintWriter(file);
            for (int i = StartN; i <= EndN; i++){
                tInicial = System.currentTimeMillis();
                alg.cubic(i);
                tFinal = System.currentTimeMillis();
                pw.println(i + ", " + (tFinal - tInicial));
            }
//

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (file != null)
                try {
                    file.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }

    }

    //HomeWork = tiempo linear, cuadrático y cúbico parámetro 100-200
    // testpow2Iter 0-overflow
    // gráficas en excel y todo eso

    //Potencia 2 iterativo

    public void testpow2 (String output, int StartN,  int EndN) {
        Algorithms alg = new Algorithms();
        long tInicial=0, tFinal=0;
        FileWriter file = null;
        PrintWriter pw;

        try
        {
            file = new FileWriter(output);
            pw = new PrintWriter(file);

            for (int i = StartN; i<=EndN; i++) {
                tInicial = System.currentTimeMillis();
                alg.pow2Iter(i);
                tFinal = System.currentTimeMillis();
                pw.println(i + ", " + (tFinal - tInicial));
            }

        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (file != null)
                try {
                    file.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
    }

    public long testAlgorithm(String className, String methodName, int n) {
        long tInicial=0, tFinal=0;

        Class<?> cl;
        try {
            cl = Class.forName(className);
            Object o = cl.newInstance();
            Method m = cl.getMethod(methodName, int.class);

            tInicial = System.currentTimeMillis();
            m.invoke(o, n);
            tFinal = System.currentTimeMillis();

        } catch (Exception e) {
            e.printStackTrace();
        }
        return tFinal-tInicial;
    }

    public void test3(String output, int StartN, int EndN, String nombreClase, String nombreMetodo) {
        long tInicial=0, tFinal=0;
        FileWriter file = null;
        PrintWriter pw;
        long total = 0;

        try {
            file = new FileWriter(output);
            pw = new PrintWriter(file);

            for (int i = StartN; i <= EndN; i++) {
                    pw.println(i + ", " + testAlgorithm(nombreClase, nombreMetodo, i));
            }
        }catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (file != null)
                try {
                    file.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
    }

    public void testFinal(String output, int StartN, int EndN, int times, String nombreClase, String nombreMetodo) {
        long tInicial=0, tFinal=0;
        FileWriter file = null;
        PrintWriter pw;
        long total = 0;

        try {
            file = new FileWriter(output);
            pw = new PrintWriter(file);

            for (int i = StartN; i <= EndN; i++) {
                for (int j = 0; j < times; j++) {
                    total += testAlgorithm(nombreClase, nombreMetodo, i);
            }
                pw.println(i + ", " + total/times);
                total = 0;
            }
        }catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (file != null)
                try {
                    file.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
    }
}