#include<stdio.h>
#include<stdlib.h>
#include<string.h>
#include<time.h>
#include<ctype.h>

int passwordIsLoungEnough(char str[]) /*funktion 1, funkar*/
{
	int i, counter = 0, retunera;

	for (i = 0; str[i] != '\0'; i++)

		counter++;

	if (counter < 8)
	{
		retunera = 0;
	}
	else
	{
		retunera = 1;
	}
	return retunera;
}
int passwordCountainsDigit(char str[]) /* funktion 2, funkar*/
{
	int i, counter = 0, retunera1;

	for (i = 0; str[i] != '\0'; i++)
		if (isdigit(str[i]))
			counter++;

		if (counter<1)
		{
			retunera1 = 0;
		}
		else
		{
			retunera1 = 1;
		}



	return retunera1;
}
int passwordHasMixedCase(char str[]) /*funktion 3, funkar*/
{
	int i, upper=0,lower=0, retunera2;

	for (i = 0; str[i] != '\0'; i++)
	{
		if (isupper(str[i])>0)
		{
			upper++;
		}

		if (islower(str[i]) > 0)
		{
			lower++;
		}

		if (upper >0 && lower >0)
		{
			retunera2 = 1;
		}
		else
		{
			retunera2 = 0;
		}
	}
	return retunera2;
}
int startsWithLetter(char str[])
{
	int i, bokstav = 0, retunera4;

	for (i = 0; i <1; i++)
	{
		if (isalpha(str[i]) > 0)
			bokstav++;


		if (bokstav > 0)
		{
			retunera4 = 1;
		}

		if(bokstav==0)
		{
			retunera4 = 0;
		}
	}
	return retunera4;
}

int isPasswordSafe(char password[])
{
	int length, digit, mixedCase, retunera3, bokstavStart;

	length = passwordIsLoungEnough(password);
	digit = passwordCountainsDigit(password);
	mixedCase = passwordHasMixedCase(password);
	bokstavStart = startsWithLetter(password);

	if (length == 1 && digit == 1 && mixedCase == 1&& bokstavStart==0)
	{
		retunera3 = 1;
	}
	else
	{
		retunera3 = 0;


		if (length == 0)
		{
			printf("your password is not long enough.\n");
		}
		if (digit == 0)
		{
			printf("your password does not contain any digits.\n");
		}
		if (mixedCase == 0)
		{
			printf("you password does not have any mixed case letters.\n");
		}
		if (bokstavStart == 1)
		{
			printf("you password starts with a Letter and that is not allowed\n");
		}
	}

	return retunera3;
}


struct account
{
	char username[30];
	char password[30];
	char newpassword[30];
	int passwordcontrol;
};


struct account userAccount(void)
{
	struct account personkonto;
	printf("enter a username:\n");
	scanf("%s", personkonto.username);

	do
	{
		do
		{
			printf("enter a password:\n");
			scanf("%s", personkonto.password);
			personkonto.passwordcontrol = isPasswordSafe(personkonto.password);

		} while (personkonto.passwordcontrol == 0);


		printf("\n enter the same password again\n");
		scanf("%s", personkonto.newpassword);



		if (strcmp(personkonto.password, personkonto.newpassword) != 0)
		{
			printf("your passwords do not match\n");
		}
		else
		{
			printf("your password is accepted\n");
		}

	} while (strcmp(personkonto.password, personkonto.newpassword) != 0);

	printf(" your password is  %s\n", personkonto.password);

	return personkonto;
};

int main(void)
{
	int i, amount, namecheck = 0;
	char personFinder[30];
	printf("enter the amount of accounts:\n");
	scanf("%d", &amount);

	account *arr = (account*)malloc(sizeof(account)*amount);

	if (arr == NULL)
		printf("could not allocate %d elements!\n", amount);
	else
	{
		for (i = 0; i < amount; i++)
			arr[i] = userAccount();



	}

	do
	{



		printf("enter the username of the person ur looking for:(type none to exit if you are not looking for any ones password):");
		scanf("%s", personFinder);

		for (i = 0; i < amount; i++)
		{


			namecheck = (strcmp(arr[i].username, personFinder));
			if (namecheck == 0)
			{
				printf("the password associated with %s is: %s\n", personFinder, arr[i].password);

				i = amount + i;
			}

		}



		if (namecheck > 0 || namecheck != 0)
			printf("no account with that name here\n");




	} while (namecheck = (strcmp(personFinder, "none") != 0));



	free(arr);
	return 0;
}