/********************************************************
	MAC BANK ABM simulation software
	Software Engineering 3K04 2005
*********************************************************/

/**************************************************
Module: Main
**************************************************/

/* include statements */
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include "constants.h"
#include "screen_output.h"
#include "user_interface.h"
#include "operator_interface.h"
#include "main_.h"
#include "getch.h"
#include "database.h"

/* static locals */
static long int abm_cash_level = INITIAL_CASH;

char cashIsUnderTenThousandDollars = 0;

/* main routine */
int main(void) {
	/*--------------------------------------------------------------
	 *  main()
	 *
	 *  Description: synchonizes all functions, program starts and ends here
	 *
	 *  Module: m_main - main
	 *
	 *  Arguments:
	 *   none
	 *
	 *  Return values:
	 *    0 - no errors
	 *	  1 - couldn't open database input file
	 *	  2 - other error
 	 *--------------------------------------------------------------*/

	int exit_condition = 0;
	char cardNumber[CARD_NUMBER_LENGTH+1];
	char PIN[PIN_LENGTH+1];

	switch(db_InitDatabase(DATABASE_FILENAME)) { /* load the data base into memory */
		case 0:
			/* successful database load */
			break;
		case 1:
			printf ("couldn't open database file\n");
			return 1;
			break;
		case 2:
			printf ("database error encountered\n");
			return 2;

			break;
	}

	do {
		io_DrawTopLine();
		printf ("ABM simulation\n\n");
		printf ("s - swipe card\n");
		printf ("k - insert operator key\n");
		printf ("i - increment day\n");
		printf ("c - cancel\n");
		io_DrawBottomLine();
		switch(getch()) {
			case 's':
				if (usr_GetCardNumber(cardNumber)!=0) break;
				if (usr_GetCardPIN(cardNumber, PIN)!=0) break;

				if (DEBUG_ON == 1) {
					printf ("CardNumber received by main:[%s]\n", cardNumber);
					printf ("PIN received by main:[%s]\n", PIN);
					printf ("Press any key to continue...\n");
					getch();
				}

				switch (db_ValidateCardNumberAndPIN(cardNumber,PIN)) {
					case 0:
						usr_Interface(cardNumber);
						break;
					case 1:
						io_DrawTopLine();
						printf ("Invalid card number\n");
						printf ("Press any key to continue...\n");
						io_DrawBottomLine();
						getch();
						break;
					case 2:
						io_DrawTopLine();
						printf ("Card number exists, but invalid PIN\n");
						printf ("Press any key to continue...\n");
						io_DrawBottomLine();
						getch();
						break;
					case 3:
						io_DrawTopLine();
						printf ("Card locked out (disabled)\n");
						printf ("Press any key to continue...\n");
						io_DrawBottomLine();
						getch();
						break;
					case 4:
						io_DrawTopLine();
						printf ("Other error\n");
						printf ("Press any key to continue...\n");
						io_DrawBottomLine();
						getch();
						break;
				}

				break;
			case 'k':
				opr_OperatorInterface();
				break;
			case 'i':
				switch (m_increment_day())
					case 0:
						io_DrawTopLine();
						printf ("Day Successfully incremented\n");
						printf ("Press any key to continue...\n");
						io_DrawBottomLine();
						getch();
						break;
					case 1:
						io_DrawTopLine();
						printf ("Error: Day not incremented\n");
						printf ("Press any key to continue...\n");
						io_DrawBottomLine();
						getch();
						break;
				break;
			case 'c' :
				exit_condition = 1;
				break;
			default : {/* invalid input */}

		}

		//printf ("money in abm = %d\n", abm_cash_level);
		//printf ("x - exit\nany key to continue\n");

	} while (exit_condition != 1);

	printf ("GOODBYE\n");

	return 0;
}

/* functions */

long int m_ReadABMCashLevel() {
	if (abm_cash_level >= 0) {
		return abm_cash_level;
	}
	else {
		return -1;
	}
}

char m_WriteABMCashLevel(long int new_cash_level) {
	if (new_cash_level < MIN_CASH_IN_ABM) {
		cashIsUnderTenThousandDollars = 1;
	}
	else {
		cashIsUnderTenThousandDollars = 0;
	}

	if (new_cash_level >= 0) {
		abm_cash_level = new_cash_level;
		return 0;
	}
	else {
		return 1;
	}
}

char m_increment_day() {
	// CALL TO DATABASE TO INCREMENT DAY

	//call database rollup function

	db_NewDayRollup();


	//if successful return 0
 		return 0;
 	//if unsuccessful return 1
 		return 1;
}