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import java.util.ArrayList;
import java.util.Scanner;
import java.util.function.Consumer;
 
public class CK_Library {
 
    public ArrayList<Book> alist = new ArrayList();
 
    public CK_Library() {
        loadData();
    }
 
    public static void main(String[] args) {
 
        CK_Library library = new CK_Library();
        library.systemOn();
    }
 
    private void systemOn() {
        Scanner scan = new Scanner(System.in);
 
        while (true) {
            printMenu();
            System.out.print("請輸入選項數字(1~5)=>");
            String input = scan.next();
            if (input.equals("1")) {
                System.out.print("請輸入 國際標準書號(ISBN),中文書名,英文書名,價格,數量(以逗點隔開)=>");
                scan = new Scanner(System.in, "big5");
                String[] bookInfo = scan.nextLine().toUpperCase().trim().split(",");
                System.out.println("-------------------------------------------------新增結果------------------------------------------------------");
                if (bookInfo.length != 5) {
                    System.out.println("新增書籍的資訊不足!請重新操作");
                } else {
                    addBook(bookInfo);
                }
 
            } else if (input.equals("2")) {
                System.out.print("請輸入 國際標準書號(ISBN)=>");
                scan = new Scanner(System.in, "big5");
                String isbn = scan.nextLine().toUpperCase().trim();
                System.out.println("-------------------------------------------------還書結果------------------------------------------------------");
                returnBook(isbn);
 
            } else if (input.equals("3")) {
                System.out.print("請輸入中文或英文書名=>");
                scan = new Scanner(System.in, "big5");
                String name = scan.nextLine().toUpperCase().trim();
                ArrayList<Book> resultList = findBooksByName(name);
                System.out.println("-------------------------------------------------查詢結果------------------------------------------------------");
                if (!resultList.isEmpty()) {
                    printBookList(resultList);
                }
 
            } else if (input.equals("4")) {
                System.out.print("請輸入書名=>");
                scan = new Scanner(System.in, "big5");
                String name = scan.nextLine().toUpperCase().trim();
                System.out.println("------------------------------------------------------------------------------------------------------------------");
                checkOutBook(name);
 
            } else if (input.equals("5")) {
                System.out.println("退出系統選單，記得再次光臨!!");
                break;
 
            } else {
                System.out.println("!!!! 請輸入工作選項 1~5 !!!!");
            }
            System.out.println("-----------------------------------------------------------------------------------------------------------------");
        }
 
    }
 
    private void printBookList(ArrayList alist) {
 
        alist.forEach(new Consumer<Book>() {
            int count = 1;
            @Override
            public void accept(Book b) {
                System.out.println(count + "." +b.toString());
                count++;
            }
        });
 
    }
 
    private void addBook(String... bookInfo) {
 
        Book book = new Book(bookInfo[0], bookInfo[1], bookInfo[2], Double.parseDouble(bookInfo[3]), Integer.parseInt(bookInfo[4]));
        boolean flag = false;
 
        for (Book b : alist) {
            if (b.ChineseName.equals(book.ChineseName) && b.EnglishName.equalsIgnoreCase(book.EnglishName)) {
                b.onShelf++;
                System.out.println("新增書籍已存在!數量由" + (b.onShelf - 1) + "=>" + b.onShelf);
                System.out.println(b.toString());
                flag = true;
                break;
            }
        }
        if (flag == false) {
            alist.add(book);
            System.out.println(book.toString());
        }
 
    }
 
    private void returnBook(String isbn) {
        Book book = queryByISBN(isbn);
        if (book != null) {
            book.onShelf++;
            System.out.println("歸還後架上數量：" + book.onShelf);
        } else {
            System.out.println("國際標準書號(ISBN)=" + isbn + " 沒有登記在本館目錄");
        }
 
    }
 
    private void checkOutBook(String name) {
 
        Book book = queryByName(name);
        if (book != null) {
            if (book.onShelf > 0) {
                book.onShelf = book.onShelf - 1;
                System.out.println("借閱書名:" + book.ChineseName + "(" + book.EnglishName + ")" + " 數量:" + 1);
            } else {
                System.out.println(book.ChineseName + "(" + book.EnglishName + ") 已全部借出");
            }
 
        } else {
            System.out.println("書名沒有登記在本館目錄");
        }
    }
 
    private Book queryByName(String bookName) {
        Book book = alist.stream()
                .filter(a -> a.ChineseName.equals(bookName) || a.EnglishName.equalsIgnoreCase(bookName))
                .findAny().orElse(null);
 
        return book;
 
    }
 
    private Book queryByISBN(String isbn) {
        Book book = alist.stream()
                .filter(a -> a.isbn.equals(isbn))
                .findAny().orElse(null);
        return book;
 
    }
 
    private ArrayList<Book> findBooksByName(String bookName) {
        ArrayList<Book> resultList = new ArrayList();
        for (Book b : alist) {
 
            if (b.ChineseName.startsWith(bookName)
                    || b.EnglishName.toUpperCase().startsWith(bookName.toUpperCase())) {
                resultList.add(b);
            }
 
        }
 
        return resultList;
 
    }
 
    private void loadData() {
        Book book1 = new Book("ABCD111111", "爪哇1", "java1", 450, 1);
        Book book2 = new Book("ABCD222222", "爪哇2", "java2", 450, 2);
        Book book3 = new Book("ABCD333333", "爪哇3", "java3", 450, 3);
        Book book4 = new Book("ABCD444444", "爪哇4", "java4", 450, 4);
        Book book5 = new Book("ABCD555555", "爪哇5", "java5", 450, 5);
        Book book6 = new Book("ABCD666666", "爪哇6", "java6", 450, 6);
        Book book7 = new Book("ABCD777777", "爪哇7", "java7", 450, 7);
        alist.add(book1);
        alist.add(book2);
        alist.add(book3);
        alist.add(book4);
        alist.add(book5);
        alist.add(book6);
        alist.add(book7);
    }
 
    public void printMenu() {
 
        System.out.println("中肯圖書館");
        System.out.println("1. 新增 書籍");
        System.out.println("2. 歸還 書籍 ");
        System.out.println("3. 查詢 書籍");
        System.out.println("4  借閱 書籍 ");
        System.out.println("5. 退出 系統");
 
    }
}