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

typedef struct node
{
char row_no;
int seat_no,pin;
char book;
struct node *next,*prev;
}node;

node *hn=NULL;

void create()
{
node *nn,*cn;
int j=1;
int k=2;
char c ='A';

do
{
int i=1;
do
{
k=(k*k)/10+100-k/2;
nn=(struct node*)malloc(sizeof(node));
nn->next=nn->prev=NULL;
nn->row_no=c;
nn->seat_no=i;
nn->pin=k;
nn->book='a';
if(hn==NULL)
{
hn=nn;
nn->next=nn->prev=hn;
}
else
{
cn=hn;

while(cn->next!=hn)
    cn=cn->next;

cn->next=nn;
nn->prev=cn;
nn->next=hn;
hn->prev=nn;
}
i++;
}while(i<=7);
j++;
c++;
}while(j<=10);
}

void display()
{
node *cn;
cn=hn;
printf("------------------------------------------------------------------\n");
printf("|                            Platinum                            |\n");
while(cn->next!=hn)
{
if((cn->prev)->row_no!=cn->row_no)
printf("| ");
printf("%c ",cn->row_no);
printf("%d ",cn->seat_no);
if(cn->book=='a')
printf("\033[32;40m -> a  \033[0m");  //green text with black background
else
printf("\033[1;31;43m -> b  \033[0m");  //red text
if((cn->next)->row_no!=cn->row_no)
printf("|\n");
if(cn->row_no=='C'&&cn->seat_no==7)
{
printf("-----------------------------------------------------------------------\n");
printf("|                             gold                               |\n");
}
if(cn->row_no=='H'&&cn->seat_no==7)
{
printf("----------------------------------------------------------------------\n");
printf("|                            Silver                              |\n");
}
cn=cn->next;
}
printf("%c",cn->row_no);
printf("%d",cn->seat_no);
if(cn->book=='a')
printf("\033[32;40m -> a  \033[0m");
else
printf("\033[1;31;43m -> b  \033[0m");
printf("|\n");

printf("------------------------------------------------------------------\n\n");
printf("\033[1;33;49mPLATINUM-> 150              GOLD-> 100                  SILVER->60\033[0m\n");
}

void display1(node *tmp[20],int n)
{
if(n!=1)
{
printf("------------------------------------------------------------------\n");
printf("THANK YOU!\nYOU HAVE SUCCESFULLY BOOKED THE SEATS\n");
for(int i=1;i<n;i++)
{
printf("%c %d ",tmp[i]->row_no,tmp[i]->seat_no);
printf("   PIN : %d \n",tmp[i]->pin);
}
printf("!!!!!!!!!!!!!!!!!!KEEP PIN SAFELY!!!!!!!!!!!!!!!!!!!\n");
printf("PINS ARE REQUIRED AT THE TIME OF CANCELATION OF SEATS\n");
printf("------------------------------------------------------------------\n");
}
 //printf("hello");
}
void book_seat()
{
    node *cn,*temp[20];
    int n,z,flag;
    char row;
    int seat;
    int ch1;
    do
    {
    z=1;
    printf("\nEnter No Of Tickets u Want To Buy: ");
    scanf("%d",&n);

    printf("\nEnter Seat Numbers: \n");

    for(int i=1;i<=n;i++)
    {
    printf("NO ");
    printf("%d",i);
    printf(" = ");
    scanf(" %c",&row);
    scanf("%d",&seat);
    cn=hn;
    while(cn->next!=hn)
    {
    if(cn->row_no==row && cn->seat_no==seat)
    {
    if(cn->book=='a')
    {
    cn->book='b';
    temp[z]=cn;
    z++;
    }
    else
    {
    printf("INVALID CHOISE!\n");
    printf("%c",cn->row_no);
    printf("%d",cn->seat_no);
    printf(" Seat is alredy reserved \n");

    }
    }
    cn=cn->next;
    }
    if(cn->row_no==row && cn->seat_no==seat)
    {
    if(cn->book=='a')
    {
    cn->book='b';
    temp[z]=cn;
    z++;
    }
    else
    {
    printf("INVALID CHOISE!\n");
    printf("%c",cn->row_no);
    printf("%d",cn->seat_no);
    printf(" Seat is alredy reserved\n");
    }
    }
    }
    display1(temp,z);
    printf("\n\nPRESS 1 To check Seat Status\n");
    printf("PRESS 2 To book other seat\n");
    printf("PRESS 3 To Exit BOOKING PORTAL\n");
    printf("\ninput: ");
    char temp;
   // scanf("%c",&temp);
    scanf("%d",&ch1);
    if(ch1==1);
        // display();
    }while(ch1==2);
}

void cancel()
{
    char row;
    int ch;
    int seat,pin;
    node *cn;
    do
    {
    ch=1;
    cn=hn;
    printf("SEAT NUMBER :");
    scanf(" %c",&row);
    scanf("%d",&seat);
    printf("PIN :");
    scanf("%d",&pin);
    while(cn->next!=hn)
    {
    if(cn->row_no==row && cn->seat_no==seat && cn->pin==pin)
    {
    printf("Are you sure u want to cancle the Seat (y/n) ");
    char c;
    scanf(" %c",&c);
    if(c=='y'||c=='Y')
    {
    printf("SEAT CANCELED SUCCESFULLY!\n");
    cn->book='a';
    }
    }
    else if(cn->row_no==row && cn->seat_no==seat && cn->pin!=pin)
    {
    printf("invalid SEAT NUMBER && PIN combination!!!!\n");
    }
    cn=cn->next;
    }
    if(cn->row_no==row && cn->seat_no==seat && cn->pin==pin)
    {
    printf("Are you sure u want to cancle (y/n) ");
    char c;
    scanf("%c",&c);
    if(c=='y'||c=='Y')
    {
    printf("SEAT CANCELED SUCCESFULLY!\n");
    cn->book='a';
    }
    }
    else if(cn->row_no==row && cn->seat_no==seat && cn->pin!=pin)
    {
    printf("invalid SEAT NUMBER && PIN combination!!!!\n");
    }
    printf("\n\nPRESS 1 To Check Seat Status\n");
    printf("PRESS 2 To Cancle More Tickets\n");
    printf("PRESS 3 To Exit CANCELATION PORTAL\n");
    printf("\ninput: ");
    scanf("%d",&ch);
    if(ch==1);
        // display();
    }
    while(ch==2);
}

int main()
{
int ch;
int c=0;
printf("\n\n\n");
printf("                 WELCOME TO MOVIE TICKET BOOKING \n");
printf("                         ONLINE  \n\n");
create();
display();

do
{
printf("\n\n\n");
printf("PRESS 1-> BOOK TICKETS\n");
printf("PRESS 2-> CANCEL TICKETS\n");
printf("PRESS 3-> EXIT\n");
printf("\ninput: ");
// char temp;
// scanf("%d",&temp);
scanf("%d",&ch);
switch(ch)
{
    case 1:
    book_seat();
    display();
    break;
    case 2:
    cancel();
    display();
    break;
    }

    if(ch==3)
    {
        printf("\n\nPRESS 1 To Main Menu\n");
        printf("PRESS 2 To Exit CINEMAX PORTAL\n");
        printf("\ninput: ");
        scanf("%d",&c);
    }
}
    while(c!=2);
    printf("\n\n\n");
    return 0;
}