/**
 * @copyright NHCarrigan
 * @license Naomi's Public License
 * @author Naomi Carrigan
 */

import { BookStatus } from "../src/lib/book.types";
import type { Book, CreateBookDto, UpdateBookDto } from "../src/lib/book.types";

describe("book Types", () => {
  describe("bookStatus enum", () => {
    it("should have the correct values", () => {
      expect(BookStatus.reading).toBe("READING");
      expect(BookStatus.finished).toBe("FINISHED");
      expect(BookStatus.toRead).toBe("TO_READ");
    });

    it("should have all expected enum values", () => {
      const values = Object.values(BookStatus);
      expect(values).toHaveLength(4);
      expect(values).toContain("READING");
      expect(values).toContain("FINISHED");
      expect(values).toContain("TO_READ");
      expect(values).toContain("RETIRED");
    });
  });

  describe("book interface", () => {
    it("should accept valid book object with minimal fields", () => {
      const book: Book = {
        author:    "F. Scott Fitzgerald",
        createdAt: new Date("2024-01-15"),
        dateAdded: new Date("2024-01-15"),
        id:        "book123",
        links:     [],
        status:    BookStatus.reading,
        tags:      [],
        title:     "The Great Gatsby",
        updatedAt: new Date("2024-01-16"),
      };

      expect(book.isbn).toBeUndefined();
      expect(book.dateFinished).toBeUndefined();
      expect(book.rating).toBeUndefined();
      expect(book.notes).toBeUndefined();
      expect(book.coverImage).toBeUndefined();
    });

    it("should accept valid book object with all fields", () => {
      const fullBook: Book = {
        author:       "George Orwell",
        coverImage:   "https://example.com/1984-cover.jpg",
        createdAt:    new Date("2024-01-01"),
        dateAdded:    new Date("2024-01-01"),
        dateFinished: new Date("2024-01-20"),
        id:           "book456",
        isbn:         "978-0-452-28423-4",
        links:        [
          { title: "Goodreads", url: "https://goodreads.com/book/1984" },
          { title: "Wikipedia", url: "https://wikipedia.org/wiki/1984" },
        ],
        notes:     "A dystopian masterpiece that remains relevant",
        rating:    5,
        status:    BookStatus.finished,
        tags:      [ "dystopian", "classic", "political" ],
        title:     "1984",
        updatedAt: new Date("2024-01-20"),
      };

      expect(fullBook.isbn).toBe("978-0-452-28423-4");
      expect(fullBook.rating).toBe(5);
      expect(fullBook.tags).toHaveLength(3);
      expect(fullBook.links).toHaveLength(2);
    });
  });

  describe("createBookDto interface", () => {
    it("should accept DTO with required fields only", () => {
      const createDto: CreateBookDto = {
        author: "Harper Lee",
        status: BookStatus.toRead,
        title:  "To Kill a Mockingbird",
      };

      expect(createDto.isbn).toBeUndefined();
      expect(createDto.rating).toBeUndefined();
      expect(createDto.notes).toBeUndefined();
      expect(createDto.coverImage).toBeUndefined();
      expect(createDto.tags).toBeUndefined();
      expect(createDto.links).toBeUndefined();
    });

    it("should accept DTO with all fields", () => {
      const fullCreateDto: CreateBookDto = {
        author:     "J.R.R. Tolkien",
        coverImage: "https://example.com/hobbit-cover.jpg",
        isbn:       "978-0-547-92822-7",
        links:      [ { title: "Author Website", url: "https://tolkien.com" } ],
        notes:      "Starting the journey to Middle-earth",
        rating:     4,
        status:     BookStatus.reading,
        tags:       [ "fantasy", "adventure", "classic" ],
        title:      "The Hobbit",
      };

      expect(fullCreateDto.isbn).toBe("978-0-547-92822-7");
      expect(fullCreateDto.rating).toBe(4);
      expect(fullCreateDto.tags).toEqual([ "fantasy", "adventure", "classic" ]);
      expect(fullCreateDto.links).toHaveLength(1);
    });
  });

  describe("updateBookDto type", () => {
    it("should accept empty update DTO", () => {
      const emptyUpdate: UpdateBookDto = {};
      expect(emptyUpdate).toEqual({});
    });

    it("should accept partial updates including dateFinished", () => {
      const partialUpdate: UpdateBookDto = {
        dateFinished: new Date("2024-02-01"),
        rating:       5,
        status:       BookStatus.finished,
      };

      expect(partialUpdate.status).toBe(BookStatus.finished);
      expect(partialUpdate.dateFinished).toEqual(new Date("2024-02-01"));
      expect(partialUpdate.rating).toBe(5);
      expect(partialUpdate.title).toBeUndefined();
    });

    it("should accept full update", () => {
      const fullUpdate: UpdateBookDto = {
        author:       "Different Author",
        coverImage:   "https://example.com/new-cover.jpg",
        dateFinished: new Date("2024-02-15"),
        isbn:         "978-1-234-56789-0",
        links:        [ { title: "New Link", url: "https://newlink.com" } ],
        notes:        "Updated notes after finishing",
        rating:       3,
        status:       BookStatus.finished,
        tags:         [ "updated", "tags" ],
        title:        "Updated Title",
      };

      expect(fullUpdate.title).toBe("Updated Title");
      expect(fullUpdate.dateFinished).toEqual(new Date("2024-02-15"));
      expect(fullUpdate.links).toHaveLength(1);
    });
  });
});
