#include <stdio.h>
#include <conio.h>
#include <string.h>
#include "struct.h"
//#include "database.txt"

/*****function declaration*****/
void getcmd(char*);
void getpass(char*);
void add_std();
void inf_viewer();
void show_list(student*);

/*****main block*****/
int main()
{
	/* variables define here */
	student std[2];
	char lgn, cmd, std_slct, name, tpass[9], spass[9];
	int i, j;
	
	/**********************************************/
	/* std 1 */

	strcpy(std[0].name,"Behzad Shabani");
	strcpy(std[0].std_num,"860343061");
	std[0].quiz[0] = 18.5;
	std[0].quiz[1] = 17;
	std[0].quiz[2] = 19;
	std[0].exercises[0] = 20;
	std[0].exercises[1] = 18;
	std[0].exercises[2] = 20;
	std[0].project[0] = 20;

	/* std 2 */
	strcpy(std[1].name,"Sepehr Safi");
	strcpy(std[1].std_num,"860343121");
	std[1].quiz[0] = 17.5;
	std[1].quiz[1] = 15;
	std[1].quiz[2] = 13;
	std[1].exercises[0] = 20;
	std[1].exercises[1] = 19;
	std[1].exercises[2] = 17;
	std[1].project[0] = 18;

	/* std 3 */
	strcpy(std[2].name,"Arsalan Barazesh");
	strcpy(std[2].std_num,"860343030");
	std[2].quiz[0] = 17;
	std[2].quiz[1] = 15.5;
	std[2].quiz[2] = 14;
	std[2].exercises[0] = 20;
	std[2].exercises[1] = 19;
	std[2].exercises[2] = 18;
	std[2].project[0] = 17;
	/**********************************************/
	
	/* starting program */
	clrscr();
	printf("Welcome To The Student Database Manager!");
	printf("\nPlease select if you want to login as Student or teacher. (S/T):");
	getcmd(&lgn);
	
	/* checking the command */
	switch (lgn){
		case 'T':
		case 't':

			/* start of teacher function */
			printf("\n\nYou loged in as Teacher.");
			
			/* checking teacher password */
			printf("\nPlease enter your password:");
			getpass(tpass);
			while (strcmp(tpass,"p") != 0){
				printf("\n\aWrong password!\nPlease try again:");
				getpass(tpass);
			}
			
			/* getting a command */
			printf("\n\nSelect one of these action:");
			printf("\n1. Add a student");
			printf("\n2. Delete a student");
			printf("\n3. Edit a student");
			printf("\nEnter number here:");
			getcmd(&cmd);
			
			/* checking the command */
			switch (cmd){
				case '1':
					printf("\n\nadd a student here!");
					add_std();
				break;
				case '2':
					printf("\n\ndelete a student!");
					show_list(std);
					//del_std();
				break;
				case '3':
					printf("\n\nedit a student");
					//edt_std();
				break;
				default:
					printf("\n\n\aUnknown command!");
				break;
			}
			
			//add_inf();
			/* end of teacher function */

		break;
		case 'S':
		case 's':

			/* start of student function */
			clrscr();
			printf("You loged in as Student.");
			printf("\nfind your name from below and enter its number.\n");
			for (i = 0; i<3; i++){
				printf("\n%d.", i + 1);
				puts(std[i].name);
				printf("\n");
			}
			printf("Now enter the number: ");
			scanf("%d", &j);
			i = j - 1;
			printf("\nWelcome ");
			puts(std[i].name);
			printf("\nplease enter your password. (default is your student number): ");
			getpass(spass);
			inf_viewer();
			/* end of student function */
			
		break;
		default:
			printf("\n\aUnknown command!");

		break;
	}

	return 0; // the program succesfully ended
}

/*****function definition*****/

/*****getcmd(): getting commands*****/
// WRITTEN BY: Behzad Shabani
// CALLING FUNCTION: getcmd(&cmd);

void getcmd(char* cmd){

	/* function variables */
	char ch_ctrl;
	int flag = 0;

	/* function process*/
	while (flag == 0){
		*cmd = getche();
		if (*cmd == '\b'){
			printf("\a ");
			continue;
		}
		else if (*cmd == '\r'){
			printf("\a");
			continue;
		}
		while (ch_ctrl != '\r'){
			ch_ctrl = getch();
			if (ch_ctrl == '\b'){
				printf("\b");
				break;
			}
			else if (ch_ctrl != '\r'){
				printf("\a");
			}
		}
		if (ch_ctrl == '\b')
			continue;
		flag = 1;
	}

}

/*****getpass(): getting password*****/
// WRITTEN BY: Behzad Shabani
// CALLING FUNCTION: getpass(pass);

void getpass(char* pass){

	/* function variables */
	char ch;
	int flag = 0, i = 0;

	/* function process*/
	while(flag == 0){
		ch = getch();
		if (ch == '\r'){
			if (i != 0){
				pass[i] = NULL;
				flag = 1;
				continue;
			}
			printf("\a");
			continue;
		}
		else if (ch == '\b'){
			printf("\b");
			i--;
			continue;
		}
		printf("*");
		pass[i] = ch;
		i++;
	}

}

/****** add_std() : adding student into the database by teacher ******/
//WRITTEN BY : Sepehr Safi
//CALLING FUNCTION: add_std();


void add_std(){

	/* Function Variables */
	char* name,*std_num;
	float quiz[3],exercises[5],project[2];
	int m=0,n=0,b=0,v;
	
	/* Function Process */
	printf("\nPlease Enter The Student's Name :");
	gets(name);
	printf("\nStudent's Name Is :");
	puts(name);
	printf("\nPlease Enter The Student's Number :");
	gets(std_num);
	printf("\nStudent's Number Is :");
	puts(std_num);

	do{
		printf("\nEnter The Quiz[%d] point:",m+1);
		scanf("%f",&quiz[m]);
		printf("\nThe Quiz[%d] point Is :%f",m,quiz[m]);
		m++;
	}while(m<3);

	do{
		printf("\nEnter The Exercise Series[%d] point:",n);
		scanf("%f",&exercises[n]);
		printf("\nThe Exercise Series[%d] point Is :%f",n,exercises[n]);
		n++;
	}while(n<5);

	do{
		printf("\nEnter The Project[%d] point:",b);
		scanf("%f",&project[b]);
		printf("\nThe Project[%d] point Is :%f",b,project[b]);
		b++;
	}while(b<2);

}

/****** inf_viewer(): showing each student's information ******/
//WRITTEN BY: Sepehr Safi
//CALLING FUNCTION: inf_viewer();
void inf_viewer(){

	/* Function Variables */
	char* name;
	float quiz[3],exercises[5],project[2];
	int l=0,k=0,h=0,i;
	student* std;

	/* Function Process */
	printf("\nYou're The Student Number[%d]\n", i+1);
	while(l<3){
		printf("\nThe Numbers Of Your Quizes Are:");
		printf("%f",std[i].quiz[l]);
		printf("\n");
		l++;
	}
	while(k<5){
		printf("\nThe Numbers Of Your Exercises Are:");
		printf("%f",std[i].exercises[k]);
		printf("\n");
		k++;
	}
	while(h<2){
		printf("\nThe Numbers Of Your Projects Are:");
		printf("%f",std[i].project[h]);
		printf("\n");
		h++;
	}
	getch();
}

/****** show_list() : show students name 15 by 15 ******/
//WRITTEN BY : Behzad Shabani
//CALLING FUNCTION: show_list();

void show_list(student* std){

	/* Function variables */
	int i = 0, j = 0, flag = 0;
	char cmd;

	/* Function process */
	do{
		while(i < 15 ){
			printf("\n%d.", i + j + 1);
			puts((*std + i + j)-> name);
			i++;
		}
		printf("\nDo you want to continue the list? (Y/N):");
		getcmd(&cmd);
		switch (cmd){
			case 'y':
			case 'Y':
				printf("\n\ncontinuing");
				continue;
			break;
			case 'n':
			case 'N':
				printf("\n\n list ended");
				flag = 1;
			break;
			default:
				printf("\n\n\aUnknown command!");
			break;
		}
		j += 15;
		i = 0;
	}while (flag == 0);

}

/*   struct.h
 
     defining new types, students and teacher, made of structure

     written by: Behzad Shabani
     Improved by: Sepehr Safi
*/



#if !defined(__STRUCT_H)

#define __STRUCT_H


typedef struct student{

	char name[45];
	
	char std_num [9];
	
	float quiz[3];
	
	float exercises[5];
	
	float project[2];

	};


typedef long int teaherpass[9];


#endif

typedef struct student{
	char name[45];
	char std_num [9];
	float quiz[3];
	float exercises[5];
	float project[2];
};