#include<stdio.h>
#include<stdlib.h>
#include<windows.h>

typedef struct data
{
    int acc_no,age;
    char name[20];
    char address[20];
    char citizenship[20];
    int acc_type;
    double phone;
    struct data *pre;
    struct data *next;
}data;

data *head = NULL;
data *list;

void new_acc()
{
    int chose,account_number;
    FILE *ptr;
    ptr = fopen("riyad.dat","a");

    data *N = (data*)malloc(sizeof(data));
    printf("Enter your name: ");
    scanf(" %[^\n]s",N -> name);
    printf("\nEnter your address: ");
    scanf(" %[^\n]s",N -> address);
    printf("\nEnter your citizenship: ");
    scanf(" %[^\n]s",N -> citizenship);
    printf("\nEnter your acc_no: ");
    scanf("%d",& N -> acc_no);
    printf("\nEnter your age: ");
    scanf("%d",& N -> age);
    printf("\nEnter your acc_type: ");
    scanf("%d",& N -> acc_type);
    printf("\nEnter your phone: ");
    scanf("%lf",& N -> phone);
    N -> pre = NULL;
    N -> next = NULL;
    if(list == NULL)
    {
        list = N;
        head = list;
    }
    else
    {
        list -> next = N;
        N -> pre = list;
        list = list -> next;
    }
    account_number = list -> acc_no;
    fscanf(ptr,"%d %s %s %s %d %d %lf",&account_number,list ->name, list ->address ,list ->address ,&list ->acc_type,&list ->age,&list ->phone);
    fprintf(ptr,"%d %s %s %s %d %d %lf",account_number,list -> name,list -> address,list -> citizenship,list -> age, list -> acc_type,list -> phone);
    fclose(ptr);
    printf("Account create successfully!");
    add_invalid:
    printf("Enter 1 for goto menu 0 for exit");
    scanf("%d",&chose);
    if(chose == 1)
    {
        menu();
    }
    else if(chose == 0)
    {
        printf("Thank you for use our project");
    }
    else
    {
        printf("Invalid input!");
        goto add_invalid;
    }


}


void edit_acc()
{

    data *temp;
    int account_number,chose,test = 0,account_no;
    printf("Enter the account number whose info you want to change: ");
    scanf("%d",&account_no);
    FILE *old;
    FILE *new;
    old = fopen("riyad.dat","r");
    new = fopen("riyadnew.dat","w");
    list = head;
   /* while(list != NULL)
    {
        if(list -> acc_no == account_no)
        {
            temp = list;
        }
        list = list -> next;
    }*/
    while(fscanf(old,"%d %s %s %d %d %d %lf",&account_number,list ->name, list ->address ,list ->address ,&list ->acc_type,&list ->age,&list ->phone)!=EOF);
   //while(fscanf(old,"%s %s %s %d %d %d %lf",temp -> name, list ->address ,temp ->address ,& temp ->acc_no,&temp ->acc_type,&temp ->age,&temp ->phone)!=EOF)
   {
        if(account_no == account_number)
        {
            test = 1;
            printf("Which info do you want to change?\n");
            printf("1.Address\n");
            printf("2.Phone\n");
            printf("3.Name\n");
            printf("Enter your chose: ");
            scanf("%d",&chose);
            if(chose == 1)
            {
                scanf(" %[^\n]s",list ->address);
            }
            else if(chose == 2)
            {
                scanf("%lf",&list -> phone);
            }
            else
            {
                scanf(" %[^\n]s",list ->name);
            }
            fprintf(new,"%d %s %s %s %d %d %lf",account_number,list -> name,list -> address,list -> citizenship,list -> age, list -> acc_type,list -> phone);
            printf("Chenge saved!\n");
        }
      /*  else
        {
            list = list -> next;
        }*/
    }
    fclose(old);
    fclose(new);
    remove("riyad.dat");
    rename("riyadnew.dat","riyad.dat");

    system("cls");
    menu();
}

void menu()
{
    int chose;
    printf("Enter your chose\n");
    printf("1.Create new account.\n 2.Edit account.\n 3.tranjiction.\n 4.Check the details of an exiting account.\n 5.Remove exinting account.\n 6.Vew customar list\n 7.Exit.\n");
    scanf("%d",&chose);
    switch(chose)
    {
        case 1:new_acc();
        break;
        case 2:edit_acc();
        break;
    }

}

int main()
{
    int pass;
    printf("Welcome To Our project\n");
    printf("Enter your password: ");
    scanf("%d",&pass);
    system("cls");
    if(pass==1)
    {
        menu();
    }
}