/*
   This program uses a driver class ValidatePassword to get user input from the screen using the
   scanner class. The ValidatePassword calls the PassCheck method that checks to see if the entered
   password is valid. The requirments for a valid passwors are as follows:

   		1) Password must be at least 8 characters long.
   		2) Password must contain two capital letters.
   		3) Password must contain at least two numbers
   		4) Password contains only letters and number

   If the password is valid the result will display "Valid Password." If not the result will
   display an appropriate error message.

   Author: Daniel
   Channel: BasementProgramming

*/

import java.util.Scanner;								// Imports the Scanner class to get Keyboard Inputs

class ValidatePassword {

	public static void main (String [] args) {

		String inputPassword;							// Creates the Password variable

		Scanner input = new Scanner (System.in);				// Creates a new Scanner

		System.out.print("Password: ");						// Prints the word "Password" to the screen
		inputPassword = input.next();						// Gets the user input for the password

		System.out.println(PassCheck(inputPassword));				// Calls the PassCheck Method on the password entered by the user and prints result to screen
		System.out.println("");

		main(args);								// re-runs the program (Allows for multiple tests)

	}

	public static String PassCheck (String Password) {

		String result = "Valid Password";			// Sets the initial result as valid
		int length = 0;						// Stores the number characters in the password
		int numCount = 0;					// Variable used to store numbers in the password
		int capCount = 0;					// Variable used to store capital letters in the password


		for (int x =0; x < Password.length(); x++) {
			if ((Password.charAt(x) >= 47 && Password.charAt(x) <= 58) || (Password.charAt(x) >= 64 && Password.charAt(x) <= 91) ||
				(Password.charAt(x) >= 97 && Password.charAt(x) <= 122)) {
					//Keep the Password
				} else {
					result = "Password Contains Invalid Character!";		//Checks that password contains only letters and numbers
				}

			if ((Password.charAt(x) > 47 && Password.charAt(x) < 58)) {			// Counts the number of numbers
				numCount ++;
			}

			if ((Password.charAt(x) > 64 && Password.charAt(x) < 91)) {			// Counts the number of capital letters
				capCount ++;
			}

			length = (x + 1);								// Counts the passwords length

		} // Ends the for loop

		if (numCount < 2){									// Checks that password contains two numbers
			result = "Not Enough Numbers in Password!";
		}

		if (capCount < 2) {									// Checks that password contains two capital letters
			result = "Not Enough Capital Letters in Password!";
		}

		if (length < 8){									// Checks that password is long enough
			result = "Password is Too Short!";
		}

			return (result);								// Returns the value of "result"

	} // Ends the PassCheck method
} // Ends the ValidatePassword class