package Bank.src;

import java.util.Scanner;

public class BankClass {

    int pro_num = TestBankerClass.pro;

    int os_num = TestBankerClass.os;

    int[] Available = new int[os_num];

    int[][] Max = new int[pro_num][os_num];

    int[][] Allocation = new int[pro_num][os_num];

    int[][] Need = new int[pro_num][os_num];

    int[][] Request = new int[pro_num][os_num];

    int[] Work = new int[os_num];

    int num = 0;

    Scanner in = new Scanner(System.in);

    // Max={{6,3,2},{5,6,1},{2,3,2}};

    public BankClass() {// Set each initial system variable and determine if it is in a safe state.

        System.out.print("This system has " + os_num + " types of critical resources, the number of which are: ");

        Available = Ginput(os_num);

        for (int j = 0; j < os_num; j++) {

            System.out.print((char) ('A' + j) + ":" + Available[j] + ",");

        }

        System.out.println();

        setMax();

        setAllocation();

        printSystemVariable();

        if (!SecurityAlgorithm()) {

            System.exit(0);

        }

    }

    public void setMax() {

        System.out.println("Please set the maximum demand of each resource for the process: ");

        for (int i = 0; i < pro_num; i++) {

            System.out.println("    Please input the process P" + i + "'s maximum resource requirements for each resource:");

            Max[i] = Ginput(os_num);

            for (int j = 0; j < os_num; j++) {

                if (Max[i][j] > Available[j]) {

                    System.out.println("Insufficient resources, please re-enter!");

                    Max[i] = Ginput(os_num);

                    j = 0;

                }

            }

        }

    }

    public void setAllocation() {

        System.out.println("Please set the amount of resources that have been allocated to each process:");

        for (int i = 0; i < pro_num; i++) {

            System.out.println("    Please input the process P" + i + "'s amount of allocated resources：");

            Allocation[i] = Ginput(os_num);

            for (int j = 0; j < os_num; j++) {

                if (Allocation[i][j] > Max[i][j]) {

                    System.out.println("Exceed the agreed amount of resources, please re-enter!");

                    Allocation[i] = Ginput(os_num);

                    j = 0;

                }

            }

        }

        // Available=Available-Allocation

        // Need=Max-Allocation

        for (int j = 0; j < os_num; j++) {

            for (int i = 0; i < pro_num; i++) {

                Available[j] = Available[j] - Allocation[i][j];

            }

        }

        for (int i = 0; i < pro_num; i++) {

            for (int j = 0; j < os_num; j++) {

                Need[i][j] = Max[i][j] - Allocation[i][j];

            }

        }

    }

    public void printSystemVariable() {

        System.out.println("The amount of resources allocated at this time is as follows:");

        System.out.println("Process\t\t" + "Max\t\t\t" + "Allocation\t\t\t" + "Need\t\t\t" + "Available");

        for (int i = 0; i < pro_num; i++) {

            System.out.print("P" + i + "\t\t\t");

            for (int j = 0; j < os_num; j++) {

                System.out.print(Max[i][j] + "  ");

            }

            System.out.print("\t|  ");

            for (int j = 0; j < os_num; j++) {

                System.out.print(Allocation[i][j] + "  ");

            }

            System.out.print("\t\t|  ");

            for (int j = 0; j < os_num; j++) {

                System.out.print(Need[i][j] + "  ");

            }

            System.out.print("\t|  ");

            if (i == 0) {

                for (int j = 0; j < os_num; j++) {

                    System.out.print(Available[j] + "  ");

                }

            }

            System.out.println();

        }

    }