import 'package:flutter/material.dart';
import 'package:hooks_riverpod/hooks_riverpod.dart';

import '../../web/application/mall_web_host_controller.dart';
import 'mall_tab_config.dart';

enum MallEntryOpenResult { opened, unavailable, failed, alreadyOpening }

class MallEntryController {
  MallEntryController(this._ref);

  final Ref _ref;
  bool _opening = false;

  Future<MallEntryOpenResult> open(
    BuildContext context, {
    MallTabConfig? initialConfig,
  }) async {
    if (_opening) return MallEntryOpenResult.alreadyOpening;
    _opening = true;
    try {
      var config = initialConfig;
      if (config?.isVisible != true) {
        config = await _ref.read(mallTabConfigProvider.notifier).ensureLoaded();
      }
      if (config?.isVisible != true || !context.mounted) {
        return MallEntryOpenResult.unavailable;
      }
      final clickId = await _ref
          .read(mallTabConfigProvider.notifier)
          .recordClick();
      if (clickId == null || !context.mounted) {
        return MallEntryOpenResult.unavailable;
      }
      _ref
          .read(mallClickAttributionProvider.notifier)
          .state = MallClickAttribution(
        adId: config!.adId,
        trackingId: config.trackingId,
        clickId: clickId,
      );
      final uri = config.attributedUri(
        clickId: clickId,
        isDark: Theme.of(context).brightness == Brightness.dark,
      );
      if (uri == null) return MallEntryOpenResult.unavailable;
      // The bottom mall entry is always resident. Server open-mode metadata is
      // still retained for attribution, while explicit links inside H5 decide
      // their own external handoff through the WebView navigation policy.
      MallWebHostController.instance.open(uri);
      return MallEntryOpenResult.opened;
    } catch (_) {
      return MallEntryOpenResult.failed;
    } finally {
      _opening = false;
    }
  }
}

final mallEntryControllerProvider = Provider((ref) => MallEntryController(ref));