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

struct employee
{
    int personal_code;
    char Emp_Name[25];
    char Emp_Title[25];
}EMPLOYEE;

struct customer
{
    float company_code;
    int personal_code;
    int identification_number;
    int reg_confirmation,registration_save;
    char identification_type[20];
}CUSTOMER;

 struct company
{
    int company_id;
    char company_name[20];
    char contact_person[20];
    int contact_number;
}COMPANY;

struct salesdata
{

}SALES;

void Registration();
void Register1();
void Update1();

int RegisterCustomer();
void RegisterEmployee();
void RegisterCompany();
void UpdateCompany();
void UpdateEmployee();
void UpdateCustomer();
void PasswordSystem();
void Details ();
void Display();

void DisplayCustomer();
void DisplayEmployee();
void DisplayPurchases(float);
float Purchase ();
int menu();
void Credit();

float EightySeven_Code = 8.7;
float Ninty_Code = 9.0;
float Desiel_Code =9.5;

int main ()
{
	int choice;

	//PasswordSystem();
	do
	{
    	choice = menu();
    	switch (choice)
    	{
    	    case 1 : Registration(); break;
    	    case 2 : Purchase();     break;
    	    case 3 : Display();      break;
    	    case 4 : Details();      break;
    	    case 0 : return 0;
    	}
	}  while(1);
}

//THIS PASSWORD SYSTEM WILL GIVE THE USER 3 ATTEMPTS TO ENTER THE CORRECT INFORMATION
//THE PROGRAM WILL EXIT UPON 3 FAILED ATTEMPTS
void PasswordSystem()
{
FILE* file_ptr = NULL;
char name[20];
char password[10];
int attempt,i;
int id_code;
char password1[20];

attempt = i = 0;
//THE SYSTEM PASSWORD AND USER CAN BE EASILY CHANGED AT LINE 100

i++;
    printf ("\tYou have 3 attempts, This is attempt # %d\n\n",i);
    printf("Enter SYSTEM username: ");
    scanf("%s",name);
    printf("Enter SYSTEM password: ");
    scanf("%s",password);
    while (((attempt < 3 || strcmp(name, "admin") == 0) && strcmp(password, "pass") == 0))
    {
        if (strcmp(name, "admin") == 0 && strcmp(password, "pass") == 0)
            {
                printf("\n\n\t\tAccess granted\n");
                system ("pause");
                system("cls");
                //EMPLOYEES WILL USE THEIR NAME AS THE PASSWORD(ALL LOWER CASE)
                file_ptr = fopen("EmployeeRegistration.dat", "rb");
                    if (file_ptr == NULL)
                        {
                            printf (" File does not exist\n");
                        }
                    else {
                            printf (" Employee's password is their name\n");
                            //fscanf (file_ptr,"%d %s %s \n",&EMPLOYEE.personal_code,EMPLOYEE.Emp_Name,EMPLOYEE.Emp_Title);
                            fread (&EMPLOYEE,sizeof(EMPLOYEE),1,file_ptr);
							printf("hi1\n");
                            printf("%d %s %s \n",EMPLOYEE.personal_code,EMPLOYEE.Emp_Name,EMPLOYEE.Emp_Title);
                            printf("hi2\n");
                            printf(" Please enter your employee ID\n");
                            scanf ("%d",&id_code);
                            printf(" Please enter password\n");
                            scanf ("%s",password1);
                            while(!feof(file_ptr))
                                {
                                    if((id_code == EMPLOYEE.personal_code) && (strcmp(password1,EMPLOYEE.Emp_Name) == 0))
                                        {
                                            printf("access granted...");
                                            printf("Id confirmed\n");
                                            system ("pause");
                                            break;
                                            system("cls");
                                        }
                                    else
                                        {
                                            printf("access denied !");
                                            break;
                                        }
                                }
                        }
                }
            else {
                printf (" ");
                }
            }
                fclose(file_ptr);
    attempt++;
}

int menu ()
{
    int choice;
    system("cls");
    printf (" \t\tEagle Energy System Options \n");
    printf("\n 1) Add & Update");
    printf("\n 2) Sell Petrol");
    printf("\n 3) Display Records");
    printf("\n 4) Details");
    printf("\n 0) Quit\n\n");
    scanf ("%d", &choice);

    return choice;
}

void Registration()
{
    int registration_choice;
    system("cls");
    printf ("\n\nPlease select an option.\n");
    printf ("1) Register a Customer/Employee.\n");
    printf ("2) Update a Customer/Employee.\n\n");
    scanf("%d", &registration_choice);
	system("cls");
	switch (registration_choice)
    {
        case 1:
            Register1();
            break;
        case 2:
            Update1();
            break;
        default:
            printf ("You have selected an invalid option.\n");
    }

	return;
}

void Register1()
{
	int registration_choice;
	registration_choice=0;

	printf ("\n\nPlease select an option.\n");
    printf ("1) Register a Customer.\n");
    printf ("2) Register an Employee.\n\n");
     scanf("%d", &registration_choice);
        switch (registration_choice)
            {
                case 1:
                    RegisterCustomer();
                    break;
                case 2:
                    RegisterEmployee();
                    break;
                default:
                    printf ("You have selected an invalid option.\n");
            }
	return;
}

int RegisterCustomer()
{
	float company_code;
	int registration_save,reg_confirmation,personal_code,option;
	FILE* file_ptr = NULL;
	personal_code = 0;

    system("cls");
	printf (" We accept PASSPORT, NATIONAL ID and DRIVER's LICENSES\n as  form of identification, please enter your ID # then enter the type of \n identification.\n\n");
    printf ("  Please enter your Identification Number:  ");
    scanf ("%d", &CUSTOMER.identification_number);
    //   do{
            printf ("  Please select the form of identification:  \n");
            printf ("   1. Passport\n");
            printf ("   2. National ID\n");
            printf ("   3. Driver's License'\n");
            scanf ("%d",&option);
			switch(option)
			{
				case 1: strcpy(CUSTOMER.identification_type, "passport");
						break;
				case 2: strcpy(CUSTOMER.identification_type, "national");
						break;
				case 3: strcpy(CUSTOMER.identification_type, "drivers");
						break;
				default: printf(" You have entered an invalid ID type. Please try again..\n");
						 RegisterCustomer();
			}
          /*  fflush(stdin);
            gets(CUSTOMER.identification_type);
           // scanf ("%s", CUSTOMER.identification_type);
                if ((strcmp(CUSTOMER.identification_type, "passport") == 0) || (strcmp(CUSTOMER.identification_type, "national") == 0) || (strcmp(CUSTOMER.identification_type, "drivers") == 0))
                    {
                        printf (" ");
                    }
                else
                    {
                        printf(" You have entered an invalid ID type. Please try again..\n");
                    }
        }while((strcmp(CUSTOMER.identification_type, "passport") != 0) || (strcmp(CUSTOMER.identification_type, "national") != 0) || (strcmp(CUSTOMER.identification_type, "drivers") != 0));*/
    do{
            printf ("\n  Please enter company code:  ");
            scanf  ("%f", &CUSTOMER.company_code);
                if ((CUSTOMER.company_code != EightySeven_Code) && (CUSTOMER.company_code != Ninty_Code) && (CUSTOMER.company_code != Desiel_Code))
                    {
                        printf(" Invalid company code, please try again.\n");
                    }
                else if((CUSTOMER.company_code == EightySeven_Code) || (CUSTOMER.company_code == Ninty_Code) || (CUSTOMER.company_code == Desiel_Code));
                    {
                        break;
                    }
        }while((CUSTOMER.company_code != EightySeven_Code) && (CUSTOMER.company_code != Ninty_Code) && (CUSTOMER.company_code != Desiel_Code));

    printf ("  Please enter desired identification number: \n");
    scanf  ("%d", &CUSTOMER.personal_code);

    printf("\n\n Is this information correct?\n\n");
    printf("Identification number: %d\n", CUSTOMER.identification_number);
    printf("identification type  : %s\n",CUSTOMER.identification_type);
    printf("ID                   : %d\n",CUSTOMER.personal_code);
    printf("Company Code         : %.1f\n", CUSTOMER.company_code);
    printf(" \n 1) for Yes \n 2) for No\n");
    scanf ("%d", &reg_confirmation);
        switch (reg_confirmation)
        {
            case 1: printf (" Would you like to save employee information ?\n");
                    printf(" 1) for Yes \n 2) for No\n");
                    scanf ("%d", &registration_save);
                     switch(registration_save)
                           {
                               case 1:     file_ptr = fopen("CustomerRegistration1.dat", "ab");
                              //case 1:     FILE* file_ptr = fopen("c:\\users\\shawn\\Registration.txt", "a");
                                if (file_ptr == NULL)
                                   {
                                      printf (" File does not exist\n");
                                     }
                                else {
                                        //fprintf (file_ptr,"%s %d %d %f\n",CUSTOMER.identification_type,CUSTOMER.identification_number,CUSTOMER.personal_code,CUSTOMER.company_code);
                                    	fwrite(&CUSTOMER, sizeof(CUSTOMER), 1, file_ptr);
									}
                                fclose(file_ptr);
                            case 2: return 0;
                            default: printf ("Invalid selection.\n");
                        }

    case 2: return 0;
    }
    return personal_code;
}

void RegisterEmployee()
{
	FILE* file_ptr = NULL;
	int personal_code;
	int reg_confirmation,registration_save;
	reg_confirmation = registration_save = personal_code=0;

    do
	{
    	system("cls");
		printf(" Please enter employee's desired ID\n ");
    	scanf ("%d",&EMPLOYEE.personal_code);
    	printf(" Please enter the employee's first name \n ");
    	scanf ("%s", EMPLOYEE.Emp_Name);
    	printf(" Please enter the employee's job title \n ");
    	fflush(stdin);
    	gets(EMPLOYEE.Emp_Title);
    	printf(" \n\nIs this information correct?\n\n");
    	printf("ID   : %d\n",EMPLOYEE.personal_code);
    	printf("Name : %s\n",EMPLOYEE.Emp_Name);
    	printf("Title: %s\n",EMPLOYEE.Emp_Title);
    	printf(" \n 1) Yes \n 2) Retry\n 3) Return to main menu..\n");
    	scanf ("%d", &reg_confirmation);
    }while((reg_confirmation != 1) && (reg_confirmation!=3));

	    switch (reg_confirmation)
        {
            case 1: printf (" Would you like to save employee information ?\n");
                    printf(" 1) for Yes \n 2) for No\n");
                    scanf ("%d", &registration_save);
                     switch(registration_save)
                           {
                               case 1:     file_ptr = fopen("EmployeeRegistration.dat", "ab");
                              //case 1:     FILE* file_ptr = fopen("c:\\users\\shawn\\Registration.txt", "a");
                                if (file_ptr == NULL)
                                   {
                                      printf (" File does not exist\n");
                                    }
                                else {
                                       // fprintf (file_ptr,"%d %s %s \n",EMPLOYEE.personal_code,EMPLOYEE.Emp_Name,EMPLOYEE.Emp_Title);
                                       fwrite(&EMPLOYEE,sizeof(EMPLOYEE),1, file_ptr);
                                    }
                                fclose(file_ptr);
                            case 2: return;
                            default: printf ("Invalid selection.\n");
                        }

    case 2: return ;
    }
}

void Update1()
{
	int update_choice;

	printf ("\n\nPlease select an option.\n");
    printf ("1) Update a Customer.\n");
    printf ("2) Update an Employee.\n\n");
    scanf("%d", &update_choice);
    switch (update_choice)
	{
        case 1:
		    UpdateCustomer();
                break;
        case 2:
            UpdateEmployee();
                break;
        default:
            printf ("You have selected an invalid option.\n");
    }
	return;
}

void UpdateCustomer()
{
 struct customer x ={0,0,0,0,'c'};
	FILE* file_ptr = NULL;

	file_ptr = fopen("CustomerRegistration1.dat", "rb");
    if (file_ptr == NULL)
    {
        printf (" Error opening file..\n");
    }
    else
	{
        fread(&x,sizeof(CUSTOMER),1,file_ptr);

        printf ("%d",x.identification_number);
        printf ("%lf",x.company_code);
        printf ("%s",x.identification_type);
        printf ("%d",x.personal_code);
        printf ("%d",x.registration_save);
        printf ("%d",x.reg_confirmation);
    }

	fclose(file_ptr);
}

void UpdateEmployee()
{
	struct employee y ={0,"Jhev","Boss"};
	FILE* file_ptr = NULL;

	file_ptr = fopen("EmployeeRegistration.dat", "rb");
    if (file_ptr == NULL)
    {
        printf (" Error opening file..\n");
    }
    else
	{
        fread(&y,sizeof(EMPLOYEE),1,file_ptr);

        printf ("%d",EMPLOYEE.personal_code);
        printf ("%s",EMPLOYEE.Emp_Name);
        printf ("%s",EMPLOYEE.Emp_Title);
    }

	fclose(file_ptr);

}

float Purchase()
{
	int sale_identification_number;
	int purchase_decision,gas_choice;
	int id_code;
	char petrol_name[12];
	int pump_number;
	float amount_per_gallon , amount_sold , value_of_sale , cost,DESIEL,NINTY,EIGHTYSEVEN;
	char identification_type1[10];
	int identification_number1,personal_code1;
	float company_code1;
	time_t rawtime;
	struct tm * timeinfo;
	personal_code1= company_code1 = identification_number1 = 0;
	system ("cls");
	time ( &rawtime );
	timeinfo = localtime ( &rawtime );
	cost = gas_choice = sale_identification_number = pump_number = amount_per_gallon = amount_sold = value_of_sale = 0;
	srand (time(NULL));
	sale_identification_number = rand()%1000;

	DESIEL = 101.71;
	NINTY = 99.81;
	EIGHTYSEVEN = 115.21;

    printf ("Please select the type of gas you would like to purchase \n");
    printf ("\n1) Desiel");
    printf ("\n2) Ninty");
    printf ("\n3) Eighty Seven\n");
    scanf ("%d", &gas_choice);
        if (gas_choice ==1)
            {
                amount_per_gallon = DESIEL;
                strcpy(petrol_name,"Desiel");
            }
        if (gas_choice ==2)
            {
                amount_per_gallon = NINTY;
               strcpy(petrol_name,"Ninty");
            }

        if (gas_choice ==3)
            {
                amount_per_gallon = EIGHTYSEVEN;
                strcpy(petrol_name,"Eighty Seven");
                printf ("hi");
            }
            fflush(stdin);

            printf ("Please enter customer's ID Code:");
            scanf("%d",&id_code);
            FILE *fp= NULL;
            fp= fopen("CustomerRegistration1.dat", "rb");
            if(fp== NULL)
                {
                    printf("Error Acessing file");
                }
            else
                {
                    while(!feof(fp))
                        {
                            //fscanf(fp,"%d", &id);
                            fscanf (fp,"%s %d %d %f\n",identification_type1,&identification_number1,&personal_code1,&company_code1);
							    if (id_code==identification_number1)
                                    {
                                        printf("Id confirmed\n");
                                        system ("pause");
                                        getch();
                                        system("cls");
                                    }
                                else
                                    {
                                        printf ("\nID Not found, please try again or register.");
                                    }
                                }
                        fclose(fp);
                        }

    printf ("\nPlease enter the amount of gallons being purchased\n");
    scanf ("%f",&amount_sold);

    value_of_sale = (amount_per_gallon * amount_sold);

    printf ("Would you like to print a reciept or start again ? Please enter 1 or 2");
    printf ("\n1) Start again");
    printf ("\n2) Print Reciept \n");
    scanf  ("%d", &purchase_decision);
        if (purchase_decision == 1)
            {
                Purchase();
            }
        else if (purchase_decision == 2)
            {
                system("cls");
            }

    printf ("\t\t\t\tEagle Energy Jamaica Limited\n");
    printf ("\t\t\t\t176 Port Royal Street, Kingston\n");
    printf ("\t\t\t\t\tBranch 9.5\n");
    printf ("\t\t\tJhevante Mcdonald - Managing Director\n");
    printf ("\t\t\t\tjhevante.mcdonald@gmail.com\n");
    printf ("\t\t\t\t\t1876-898-0479\n");
    printf ("The transaction number is: %d \n", sale_identification_number);
    printf ("Eagle Energy ID          :");
    printf (" \nCustomer ID              :%d",id_code);
    printf (" \nPetrol Name              :%s",petrol_name);
    printf (" \nAmount sold in Gallons   :%d Gal.",(int)amount_sold);
    printf (" \nCost Per Gallon          :%.3f",amount_per_gallon);
    printf (" \nTotal Cost               :%.3f",value_of_sale);
    printf (" \nThis purchase was made on:%s", asctime(timeinfo));
    cost = value_of_sale;
    system("pause");
    return cost;
}

void Display()
{
	int displaychoice;
	displaychoice = 0;

	printf(" What data would you like to display ?\n");
    printf ("1)Customer Information\n");
    printf ("2)Employee Information\n");
    printf ("3)Purchase Information\n");
    scanf("%d",&displaychoice);
    switch (displaychoice)
    {
        case 1 : DisplayCustomer();
         break;
        case 2 : DisplayEmployee();
         break;
//        case 3 : DisplayPurchases(float cost );
        // break;
    }
}

void DisplayCustomer()
{
char ch;
FILE* file_ptr = NULL;
file_ptr = fopen("CustomerRegistration.dat", "rb");
    if (file_ptr == NULL)
        {
            printf (" File does not exist\n");
        }
    else {
            system("cls");
            printf ("\tEmployee Information\n\n");
            printf ("Id  Name   Title\n");
            while(1)
            {
                ch = fgetc(file_ptr);
                if (ch==EOF)
                {
                    break;
                }
                printf ("%c",ch);
            }
            printf(" \n\nPress any key to continue..");
            getch();
        }
return;
}


void DisplayEmployee()
{

char ch;
FILE* file_ptr = NULL;
file_ptr = fopen("EmployeeRegistration.dat", "rb");
    if (file_ptr == NULL)
        {
            printf (" File does not exist\n");
        }
    else {
            system("cls");
            printf ("\tEmployee Information\n\n");
            printf ("Id  Name   Title\n");
            while(1)
            {
                ch = fgetc(file_ptr);
                if (ch==EOF)
                {
                    break;
                }
                printf ("%c",ch);
            }
            printf(" \n\nPress any key to continue..");
            getch();
        }
return;
}

void DisplayPurchases(float cost)
{

}

//THIS FUNCTION IS DISPLAY THE RELEVANT DETAILS OF THE COMPANY
void Details()
{
    system("cls");
    printf ("\t\t\tEagle Energy Jamaica Limited\n");
    printf ("\t\t\t176 Port Royal Street, Kingston\n");
    printf ("\t\t\t\tBranch 9.5\n");
    printf ("\t\t\t    904-3921 / 904-3922\n\n\n");
    printf ("Javaughn Jordan - Supervisor\n");
    printf ("Duvaun Clacken- Assistant Supervisor\n");
    printf ("Jhevante Mcdonald - Managing Director\n");
   // printf ("\t\t\tjhevante.mcdonald@gmail.com\n");
   // printf ("\t\t\t\t\t1876-898-0479\n");
    printf ("Tami-Ann Russell - Executive Director\n\n");
    system ("pause");

}