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

struct Address{
    int street_number; // street number
    char street_name[20]; //street name
};

struct Member{
    long long ID; //Member ID
    char first_name[20]; // First name
    char last_name[20]; // Last name
    struct Address address; // address sub struct
    int age; // member age
};

struct Book{
    char title[50]; //title of book
    char author[30]; //author of book
    char genre[20]; // genre of book
    int checked_out; //make shift boolean for if the book is check out (0 in stock 1 out of stock)
};

int main(){
    struct Member member[4] = {0}; // array that stores 4 members
    struct Book library[4] = {0}; // array that stores 4 books

    int menu_continue = 1; // while loop condition to reuse the menu
    int member_count = 0; // keeps track of the number of members to move through the array of members

    char clerk_name[30]; // name of the clerk who has registered the customer

    //building the library
    strcpy(library[0].author, "JRR Tolkien");
    strcpy(library[0].title, "Lord of The Rings");
    strcpy(library[0].genre, "Fantasy");
    library[0].checked_out = 0;

    strcpy(library[1].author, "Douglas Adams");
    strcpy(library[1].title, "Hitchhiker's Guide to the Galaxy");
    strcpy(library[1].genre, "Science Fiction");
    library[1].checked_out = 0;


    strcpy(library[2].author, "Sebastian Junger");
    strcpy(library[2].title, "Tribal");
    strcpy(library[2].genre, "Non-fiction");
    library[2].checked_out = 0;


    strcpy(library[3].author, "Rupi Kaur");
    strcpy(library[3].title, "The Sun and Her Flowers");
    strcpy(library[3].genre, "Poetry");
    library[3].checked_out = 0;

    //psuedo-login for clerk
    printf("Enter clerk name.\n");
    scanf("%s", clerk_name);

    //menu and actions within the menu
    while(menu_continue == 1){
        long long menu_search_member_ID;  //ID to be searched
        long long menu_remove_member_ID; //ID to be removed
        int menu_option = -1; //choice for menu navigation
        int member_found = 0; //makeshift boolean for if the member is found or not

        printf("Welcome to the Libary Manager, %s \n", clerk_name);
        printf(" 1: Add Member\n 2: Remove Member\n 3: Search Member\n 4: Search Book\n 5: Borrow Book\n 6: Return Book\n 7: Exit\n");
        scanf("%d", &menu_option);
        fflush(stdin);

        //this is where the menu selection is processed
        switch(menu_option){
            //add member
            case 1:
                if(member_count == 4){
                        printf("Cannot add any more members.\n\n");
                    } else {
                    printf("First Name: \n");
                    scanf("%s", member[member_count].first_name);
                    printf("Last Name: \n");
                    scanf("%s", member[member_count].last_name);
                    printf("Age: \n");
                    scanf("%d", &member[member_count].age);
                    printf("Street Number: \n");
                    scanf("%d", &member[member_count].address.street_number);
                    printf("Streen Name: \n");
                    scanf("%s", member[member_count].address.street_name);
                    printf("User ID (9 digits): \n\n");
                    scanf("%9lld", &member[member_count].ID);
                    fflush(stdin);
                    member_count++;
                    }
                break;
            //remove member
            case 2:
                printf("Enter the ID of the membership you wish to cancel. \n");
                scanf("%9lld", &menu_remove_member_ID);
                for(int i = 0; i < member_count; i++){
                    if(menu_remove_member_ID == member[i].ID){
                        printf("Membership cancelled.\n\n");
                        member_found = 1;
                    }
                }
                if(member_found == 0){
                    printf("Member not found.\n\n");
                }
                member_found = 0;
                member_count--;
                fflush(stdin);
                break;
            //search member
            case 3:
                printf("Enter the ID of the member you want to find. \n");
                scanf("%9lld", &menu_search_member_ID);
                for(int i = 0; i < member_count; i++){
                    if(menu_search_member_ID == member[i].ID){
                        printf("Member found.\n\n");
                        member_found = 1;
                    }
                }
                if(member_found == 0){
                    printf("Member not found.\n\n");
                }
                member_found = 0;
                fflush(stdin);
                break;
            //search book
            case 4:
                printf("Enter the title of the book.\n");
                break;
            //borrow book
            case 5:
                printf("Which book would you like to borrow?\n");
                break;
            //return book
            case 6:
                printf("Enter the title of the book you're returning.\n");
                break;
            //exit
            case 7:
                printf("Goodbye!\n");
                exit(0);
                break;
            default:
                printf("Please choose one of the available options from the menu using 1-7.\n\n");
                fflush(stdin);
                break;
        }
    }
    return 0;
}