import '../database/database.dart';
import '../l10n/strings.dart';
import '../mews/document.dart';
import 'controllers/reader_settings_controller.dart'
    show ReaderSettingsController;
import 'controllers/subscriptions_controller.dart';
import 'pages/bookmarks_page.dart';
import 'pages/history_page.dart';
import 'pages/hub_page.dart';
import 'pages/mews_urls.dart';
import 'pages/posts_page.dart';
import 'pages/settings_page.dart';
import 'pages/tags_page.dart';
import 'pages/subscriptions_page.dart';

/// Builds the client's own pages as real [MewsPage]s: they render like any
/// other page and take part in the walk history, so swiping and back/forward
/// treat them like visited pages.
class InternalPages {
  InternalPages({
    required MewsDatabase db,
    required ReaderSettingsController settings,
    required SubscriptionsController subscriptions,
    required Strings strings,
  })  : _db = db,
        _settings = settings,
        _subscriptions = subscriptions,
        _strings = strings;

  final MewsDatabase _db;
  final ReaderSettingsController _settings;
  final SubscriptionsController _subscriptions;
  final Strings _strings;

  /// Whether [url] is one of the internal pages.
  bool handles(String url) => MewsUrls.isInternal(url);

  /// The internal page for [url], or null when the name is unknown.
  Future<MewsPage?> pageFor(String url) {
    // Internal addresses are opaque, so the page name is the path, not a host.
    final uri = Uri.parse(MewsUrls.canonical(url));
    return switch (uri.path) {
      'hub' => buildHubPage(uri,
          db: _db, subscriptions: _subscriptions, strings: _strings),
      'posts' => buildPostsPage(uri,
          db: _db,
          strings: _strings,
          refreshing: _subscriptions.refreshing.value),
      'bookmarks' => buildBookmarksPage(uri, db: _db, strings: _strings),
      'subscriptions' => buildSubscriptionsPage(uri, db: _db, strings: _strings),
      'history' => buildHistoryPage(uri, db: _db, strings: _strings),
      'tags' => buildTagsPage(uri, db: _db, strings: _strings),
      'settings' =>
        buildSettingsPage(uri, settings: _settings, strings: _strings),
      _ => Future.value(null),
    };
  }
}