import java.util.*;

// Class to help you test your question 4
public class TestQ4 {
    public static void main(String args[]) {
        System.out.println("===Testing class basics from example given in spec===");
        System.out.println();

        BookData book0 = new BookData("1984", "George Orwell");
        book0.review(4.7);
        book0.review(5);
        book0.review(4.9);
        book0.review(4.9);
        BookData book1 = new BookData("Percy Jackson & the Olympians: The Lightning Thief", "Rick Riordan");
        book1.review(4.9);
        BookData book2 = new BookData("No reviews", "No reviews");

        checkEquals("book0.getRating()", book0.getRating(), 4.875);
        checkEquals("book1.getRating()", book1.getRating(), 4.9);
        checkEquals("book2.getRating()", book2.getRating(), 0.0);

        checkEquals("book0.toString()", book0.toString(), "1984, by George Orwell, 4.8 (4 reviews)");
        checkEquals("book1.toString()", book1.toString(), "Percy Jackson & the Olympians: The Lightning Thief, by Rick Riordan, 4.9 (1 review)");
        checkEquals("book2.toString()", book2.toString(), "No reviews, by No reviews, 0.0 (0 reviews)");

        System.out.println();
        System.out.println("=== Testing compareTo ===");
        System.out.println();

        BookData[] books = setupBooks();
        Arrays.sort(books);
        checkEquals("Comparing sorted list", Arrays.toString(books),
                "[A, by Author, 4.0 (1 review), C, by Author, 1.3 (6 reviews), D, by Author, 1.3 (3 reviews), B, by Author, 0.0 (0 reviews)]");

    }

    // Returns an array of movies with special values to help test sorting behavior
    public static BookData[] setupBooks() {
        BookData[] books = {
            new BookData("C", "Author"),
            new BookData("D", "Author"),
            new BookData("A", "Author"),
            new BookData("B", "Author")
        };

        String[] allRatings = {
            "112112",
            "112",
            "4",
            "",

            "00044455",
            "00224455",
            "01",
            "00224455",
            "00144445"
        };

        for (int i = 0; i < books.length; i++) {
            BookData book = books[i];
            String ratings = allRatings[i];

            for (int j = 0; j < ratings.length(); j++) {
               int rating = Character.getNumericValue(ratings.charAt(j));
               book.review(rating);
            }
        }
        return books;
    }

    // Checks if the expcted value matches the value received. Prints out information
    // (including a description) explaining what was tested and if it succeded.
    public static <E> void checkEquals(String description, E received, E expected) {
        checkEquals(description, received, expected, null);
    }

    // Checks if the expcted value matches the value received. Prints out information
    // (including a description) explaining what was tested and if it succeded.
    // Also prints a note in the case of test failure to indicate any special cases.
    public static <E> void checkEquals(String description, E received, E expected, String notes) {
        System.out.print("Testing " + description + " ...  ");
        if (expected.equals(received)) {
            System.out.println("Passed!");
        } else {
            System.out.println("Does not match!");
            System.out.println("   Received: " + received);
            System.out.println("   Expected: " + expected);

            if (notes != null) {
                System.out.println();
                System.out.println("   Note: " + notes);
            }
        }
    }
}