import 'package:flutter_test/flutter_test.dart';
import 'package:worldhopper/models/entry.dart';
import 'package:worldhopper/models/feed.dart';
import 'package:worldhopper/models/link.dart';
import 'package:worldhopper/models/server.dart';
import 'package:worldhopper/models/stream_link.dart';
import 'package:worldhopper/services/server_software/server_software_type.dart';

void main() {
  group('Server', () {
    test('can be constructed with required fields', () {
      final server = Server(
        id: 's1',
        name: 'Test Server',
        url: 'https://example.com/opds',
        createdAt: DateTime(2024, 1, 1),
      );
      expect(server.id, 's1');
      expect(server.name, 'Test Server');
      expect(server.url, 'https://example.com/opds');
      expect(server.softwareType, isNull);
    });

    test('requiresAuth returns true when credentials present', () {
      final server = Server(
        id: 's1',
        name: 'Test',
        url: 'https://example.com',
        username: 'user',
        password: 'pass',
        createdAt: DateTime(2024),
      );
      expect(server.requiresAuth, isTrue);
    });

    test('requiresAuth returns false when no credentials', () {
      final server = Server(
        id: 's1',
        name: 'Test',
        url: 'https://example.com',
        createdAt: DateTime(2024),
      );
      expect(server.requiresAuth, isFalse);
    });

    test('toDatabase and fromDatabase roundtrip', () {
      final original = Server(
        id: 's1',
        name: 'Test',
        url: 'https://example.com',
        username: 'user',
        password: 'pass',
        createdAt: DateTime(2024, 1, 1),
        softwareType: ServerSoftwareType.kavita,
      );
      final row = original.toDatabase();
      final restored = Server.fromDatabase(row);
      expect(restored.id, original.id);
      expect(restored.name, original.name);
      expect(restored.url, original.url);
      expect(restored.username, original.username);
      expect(restored.password, original.password);
      expect(restored.softwareType, ServerSoftwareType.kavita);
    });

    test('JSON roundtrip preserves all fields', () {
      final original = Server(
        id: 's1',
        name: 'Test',
        url: 'https://example.com',
        createdAt: DateTime(2024, 1, 1),
      );
      final json = original.toJson();
      final restored = Server.fromJson(json);
      expect(restored, original);
    });
  });

  group('Entry', () {
    test('isNavigation detects subsection links', () {
      const entry = Entry(
        id: 'e1',
        title: 'A Collection',
        links: [Link(rel: 'subsection', href: '/collection/1')],
      );
      expect(entry.isNavigation, isTrue);
    });

    test('isNavigation is false for acquisition entries', () {
      const entry = Entry(
        id: 'e1',
        title: 'A Book',
        links: [
          Link(
            rel: 'http://opds-spec.org/acquisition',
            href: '/book.epub',
            type: 'application/epub+zip',
          ),
        ],
      );
      expect(entry.isNavigation, isFalse);
    });

    test('hasStreamLink returns true when stream link present', () {
      const entry = Entry(
        id: 'e1',
        title: 'Comic',
        streamLink: StreamLink(
          href: 'https://example.com/page/{pageNumber}',
          type: 'image/jpeg',
          pageCount: 20,
        ),
      );
      expect(entry.hasStreamLink, isTrue);
      expect(entry.isImageStream, isTrue);
    });

    test('isEpub detects EPUB acquisition link', () {
      const entry = Entry(
        id: 'e1',
        title: 'Book',
        links: [
          Link(
            rel: 'http://opds-spec.org/acquisition',
            href: '/book.epub',
            type: 'application/epub+zip',
          ),
        ],
      );
      expect(entry.isEpub, isTrue);
    });

    test('JSON roundtrip preserves basic fields', () {
      const original = Entry(
        id: 'e1',
        title: 'Test Entry',
        authors: ['Author One'],
        categories: ['Fiction'],
      );
      final json = original.toJson();
      final restored = Entry.fromJson(json);
      expect(restored.id, original.id);
      expect(restored.title, original.title);
      expect(restored.authors, original.authors);
      expect(restored.categories, original.categories);
    });
  });

  group('Feed', () {
    test('isNavigationFeed detects navigation entries', () {
      const feed = Feed(
        id: 'f1',
        title: 'Root',
        entries: [
          Entry(
            id: 'e1',
            title: 'Library',
            links: [Link(rel: 'subsection', href: '/lib')],
          ),
        ],
      );
      expect(feed.isNavigationFeed, isTrue);
      expect(feed.isAcquisitionFeed, isFalse);
    });

    test('isAcquisitionFeed when no navigation entries', () {
      const feed = Feed(
        id: 'f1',
        title: 'Books',
        entries: [
          Entry(
            id: 'e1',
            title: 'Book 1',
            links: [
              Link(
                rel: 'http://opds-spec.org/acquisition',
                href: '/book.epub',
              ),
            ],
          ),
        ],
      );
      expect(feed.isAcquisitionFeed, isTrue);
      expect(feed.isNavigationFeed, isFalse);
    });

    test('nextLink returns pagination link', () {
      const feed = Feed(
        id: 'f1',
        title: 'Books',
        links: [
          Link(rel: 'next', href: '/page/2'),
          Link(rel: 'self', href: '/page/1'),
        ],
      );
      expect(feed.nextLink, isNotNull);
      expect(feed.nextLink!.href, '/page/2');
    });

    test('nextLink returns null when not present', () {
      const feed = Feed(
        id: 'f1',
        title: 'Books',
        links: [Link(rel: 'self', href: '/page/1')],
      );
      expect(feed.nextLink, isNull);
    });
  });

  group('StreamLink', () {
    test('getPageUrl replaces pageNumber placeholder', () {
      const link = StreamLink(
        href: 'https://example.com/page/{pageNumber}',
        type: 'image/jpeg',
        pageCount: 50,
      );
      expect(link.getPageUrl(5), 'https://example.com/page/5');
    });

    test('getPageUrl replaces both pageNumber and maxWidth', () {
      const link = StreamLink(
        href: 'https://example.com/page/{pageNumber}?maxWidth={maxWidth}',
        type: 'image/jpeg',
        pageCount: 50,
      );
      expect(
        link.getPageUrl(3, maxWidth: 1200),
        'https://example.com/page/3?maxWidth=1200',
      );
    });

    test('supportsMaxWidth detects maxWidth placeholder', () {
      const withMax = StreamLink(
        href: 'https://example.com/{pageNumber}?maxWidth={maxWidth}',
        type: 'image/jpeg',
        pageCount: 10,
      );
      const withoutMax = StreamLink(
        href: 'https://example.com/{pageNumber}',
        type: 'image/jpeg',
        pageCount: 10,
      );
      expect(withMax.supportsMaxWidth, isTrue);
      expect(withoutMax.supportsMaxWidth, isFalse);
    });
  });

  group('Link', () {
    test('JSON roundtrip', () {
      const original = Link(
        rel: 'acquisition',
        href: '/book.epub',
        type: 'application/epub+zip',
        title: 'Download',
      );
      final json = original.toJson();
      final restored = Link.fromJson(json);
      expect(restored, original);
    });
  });
}