import "dart:io" show Platform;
import "package:flutter/foundation.dart" show kIsWeb;
import "package:flutter/widgets.dart";
import "package:shadcn_flutter/shadcn_flutter.dart";
import "../services/ad_service.dart";
import "../services/admob_service.dart";
import "../services/adsense_service.dart";

class AdBanner extends StatefulWidget {
  const AdBanner({Key? key}) : super(key: key);

  @override
  State<AdBanner> createState() => _AdBannerState();
}

class _AdBannerState extends State<AdBanner> {
  late AdService _adService;
  bool _isLoading = true;
  bool _isMacOS = false;

  @override
  void initState() {
    super.initState();

    // check if running on macOS
    if (!kIsWeb && Platform.isMacOS) {
      _isMacOS = true;
      _isLoading = false;
    } else {
      _initializeAds();
    }
  }

  Future<void> _initializeAds() async {
    // Platform detection
    if (kIsWeb) {
      _adService = AdSenseService();
    } else {
      _adService = AdMobService();
    }

    try {
      await _adService.initialize();
      await _adService.loadBannerAd();
    } catch (e) {
      print("Error initializng ads: $e");
    } finally {
      if (mounted) {
        setState(() {
          _isLoading = false;
        });
      }
    }
  }

  @override
  void dispose() {
    if (!_isMacOS) {
      _adService.dispose();
    }
    super.dispose();
  }

  @override
  Widget build(BuildContext context) {

    // Check if we're on mobile (iOS/Android)
    bool isMobile = !kIsWeb && !_isMacOS && (Platform.isIOS || Platform.isAndroid);

    // Show placeholder only on macOS and web when ads fail to load
    // On mobile, we want real ads or nothing
    if (_isMacOS || (!isMobile && !_isLoading && !_adService.isLoaded)) {
      return ConstrainedBox(
        constraints: const BoxConstraints(
          minHeight: 80,
        ),
        child: OutlinedContainer(
          child: Center(
            child: Text(
              "ADVERTISEMENT SPACE",
              style: TextStyle(
                color: Theme.of(context).colorScheme.mutedForeground,
                fontSize: 12,
                fontWeight: FontWeight.w500,
              ),
            ),
          ),
        ),
      ).withPadding(
        horizontal: 8
      );
    }

    if (_isLoading) {
      return SizedBox(
        height: 50,
        child: Center(
          child: SizedBox(
            width: 20,
            height: 20,
            child: CircularProgressIndicator(strokeWidth: 2),
          ),
        ),
      );
    }

    return _adService.getBannerWidget();
  }
}