import 'dart:async';

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

import 'package:f0ckapp/services/api_service.dart';
import 'package:f0ckapp/models/suggestion_model.dart';
import 'package:f0ckapp/providers/media_provider.dart';

class CustomSearchDelegate extends SearchDelegate<String> {
  @override
  List<Widget> buildActions(BuildContext context) {
    return [
      IconButton(
        icon: Icon(Icons.clear),
        onPressed: () {
          query = '';
          showSuggestions(context);
        },
      ),
    ];
  }

  @override
  Widget buildLeading(BuildContext context) {
    return IconButton(
      icon: Icon(Icons.arrow_back),
      onPressed: () => close(context, 'null'),
    );
  }

  @override
  Widget buildResults(BuildContext context) {
    return Center(child: Text('Suchergebnisse für: "$query"'));
  }

  @override
  Widget buildSuggestions(BuildContext context) {
    if (query.isEmpty) {
      return Container(padding: EdgeInsets.all(16.0), child: Text(''));
    }

    final Future<List<Suggestion>> futureSuggestions = Future.delayed(
      Duration(milliseconds: 300),
      () => fetchSuggestions(query),
    );

    return FutureBuilder<List<Suggestion>>(
      future: futureSuggestions,
      builder: (BuildContext context, AsyncSnapshot<List<Suggestion>> snapshot) {
        if (snapshot.connectionState == ConnectionState.waiting) {
          return Center(child: CircularProgressIndicator());
        }
        if (snapshot.hasError) {
          return Center(child: Text("Fehler: ${snapshot.error}"));
        }
        if (!snapshot.hasData || snapshot.data!.isEmpty) {
          return Center(child: Text("Keine Vorschläge gefunden."));
        }

        final List<Suggestion> suggestions = snapshot.data!;
        return Consumer(
          builder: (BuildContext context, WidgetRef ref, Widget? child) {
            return ListView.builder(
              itemCount: suggestions.length,
              itemBuilder: (BuildContext context, int index) {
                final Suggestion suggestion = suggestions[index];
                return ListTile(
                  title: Text(suggestion.tag),
                  subtitle: Text(
                    'Getaggt: ${suggestion.tagged}x • Score: ${suggestion.score.toStringAsFixed(2)}',
                    style: TextStyle(fontSize: 12),
                  ),
                  onTap: () {
                    ref.read(mediaProvider.notifier).setTag(suggestion.tag);
                    close(context, suggestion.tag);
                  },
                );
              },
            );
          },
        );
      },
    );
  }
}