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

struct sual{
    int price;
    char customer[20];
    char dress[20];
    struct sual *next;
};

struct sual *start = NULL;

void menu(){


    printf("BLUE DRESS SHOP CASHIER QUEUE\n");
    printf("~~~~~~~~~~~~~~~~~~~~~~~~~~~~~\n\n");
    printf("1. view queue\n");
    printf("2. add customer to queue\n");
    printf("3. serve to customer\n");
    printf("4. exit\n");
    printf("input :");
}

struct sual *add(struct sual *start){
        struct sual *newsual,*ptr;
        int harga;
        char pembeli[20],pakaian[20];

        do{
            printf("input customer's [3...20]: " );
            scanf("%[^\n]",pembeli);
            getchar();
        }while (strlen(pembeli)<3 || strlen(pembeli)>20);

        do{
            printf("input dress's [3...20]: " );
            scanf("%[^\n]",pakaian);
            getchar();
        }while (strlen(pakaian)<3 || strlen(pakaian)>20);

        do {
            printf("input dress's price[$3...$999] : ");
            scanf("%d",&harga );
        } while(harga < 3 || harga > 999);

            newsual= (struct sual*)malloc(sizeof(struct sual));
            strcpy(newsual->customer,pembeli);
            strcpy(newsual->dress,pakaian);
            newsual -> price = harga;
            ptr=start;
            if (start == NULL) {
                newsual -> next = start;
                start = newsual;
            }else{
            newsual -> next = NULL;
            while(ptr -> next != NULL){
            ptr = ptr -> next;  }
            ptr -> next = newsual;
}

        return start;
}

    struct sual *queue(struct sual *start) {
        struct sual *ptr;


        ptr = start;
        if(ptr == NULL){
            printf("\ntidak ada data...");
        }else{
            printf("| customer's name | dress's name    | price($)\n\n");
        while (ptr != NULL){
                printf("| %-15s | %-15s | %-10d \t\n",ptr->customer,ptr->dress,ptr->price );
                ptr = ptr -> next;
            }
        }
        getchar();
        return start;
    }


    struct sual *sell(struct sual *start){
        struct sual *ptr;
        ptr = start;
        if (start == NULL) {
            printf("------------- NO Queue------------");
        }else if(start != NULL){
        printf("-------------- has been served -------------\n" );
        start = start -> next;
        free(ptr);
    }
        getchar();
        return start;
    }

    struct sual *example(struct sual *start){
        struct sual *kastemer1;

        kastemer1 = (struct sual *)malloc(sizeof(struct sual));

        start = kastemer1;

        strcpy(kastemer1->customer, "ali");
        strcpy(kastemer1->dress, "kaos golkar");
        kastemer1->price = 67;
        kastemer1->next = NULL;

        return start;
}


    int main(){
    int pilih;

    start = example(start);
        do{
        system("cls");
        menu();
        scanf("%d",&pilih );
        getchar();
        if(pilih==1){
            start=queue(start);
        }else if(pilih==2){
            start=add(start);
        }else if(pilih==3){
            start=sell(start);
        }
    }while(pilih !=4);
        return 0;
    }