import 'package:flutter/material.dart';
import '../models/landmark.dart';
import '../services/landmark_database.dart';
import '../services/local_sqlite_db.dart';
import '../services/tactical_api_service.dart';

class PlaceSearchSheet extends StatefulWidget {
  final Function(TacticalLandmark, bool startNavigation) onDestinationSelected;

  const PlaceSearchSheet({super.key, required this.onDestinationSelected});

  @override
  State<PlaceSearchSheet> createState() => _PlaceSearchSheetState();
}

class _PlaceSearchSheetState extends State<PlaceSearchSheet> {
  final TextEditingController _controller = TextEditingController();
  List<TacticalLandmark> _results = [];
  bool _isSearching = false;

  @override
  void initState() {
    super.initState();
    _results = LandmarkDatabase.allLandmarks.take(15).toList();
  }

  void _onSearch(String query) async {
    final cleanQuery = query.trim();
    if (cleanQuery.isEmpty) {
      setState(() => _results = LandmarkDatabase.allLandmarks.take(15).toList());
      return;
    }

    setState(() => _isSearching = true);

    // 1. Search SQLite Database (Instant offline search)
    List<TacticalLandmark> dbResults = [];
    try {
      dbResults = await LocalSqliteDb.searchPlaces(cleanQuery, limit: 30);
    } catch (_) {}

    // 2. Search Static Landmark database
    final staticResults = LandmarkDatabase.search(cleanQuery);

    // 3. Search Online Geocoding API if offline results are few
    List<TacticalLandmark> onlineResults = [];
    if (dbResults.length < 5) {
      try {
        onlineResults = await TacticalApiService.searchOnlinePlaces(cleanQuery);
      } catch (_) {}
    }

    final combined = <TacticalLandmark>[...dbResults, ...onlineResults, ...staticResults];
    final seen = <String>{};
    final unique = <TacticalLandmark>[];
    for (final r in combined) {
      if (seen.add('${r.name}_${r.lat}_${r.lng}')) {
        unique.add(r);
      }
    }

    if (mounted) {
      setState(() {
        _results = unique;
        _isSearching = false;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      padding: const EdgeInsets.only(top: 16, left: 16, right: 16, bottom: 24),
      decoration: const BoxDecoration(
        color: Color(0xFF0F172A),
        borderRadius: BorderRadius.vertical(top: Radius.circular(24)),
        boxShadow: [BoxShadow(color: Colors.black87, blurRadius: 25)],
      ),
      child: Column(
        mainAxisSize: MainAxisSize.min,
        children: [
          // Drag Handle
          Container(
            width: 40,
            height: 4,
            decoration: BoxDecoration(
              color: Colors.white24,
              borderRadius: BorderRadius.circular(2),
            ),
          ),
          const SizedBox(height: 14),

          // Search Field
          TextField(
            controller: _controller,
            onChanged: _onSearch,
            style: const TextStyle(color: Colors.white, fontSize: 13),
            decoration: InputDecoration(
              hintText: 'ابحث عن أي وجهة، شارع، معلم، أو منشأة في الأردن...',
              hintStyle: const TextStyle(color: Color(0xFF64748B), fontSize: 11.5),
              prefixIcon: const Icon(Icons.search, color: Color(0xFF0071E3), size: 20),
              suffixIcon: _controller.text.isNotEmpty
                  ? IconButton(
                      icon: const Icon(Icons.clear, size: 16, color: Colors.white54),
                      onPressed: () {
                        _controller.clear();
                        _onSearch('');
                      },
                    )
                  : null,
              filled: true,
              fillColor: const Color(0xFF020617),
              contentPadding: const EdgeInsets.symmetric(vertical: 12),
              border: OutlineInputBorder(
                borderRadius: BorderRadius.circular(14),
                borderSide: const BorderSide(color: Colors.white12),
              ),
              focusedBorder: OutlineInputBorder(
                borderRadius: BorderRadius.circular(14),
                borderSide: const BorderSide(color: Color(0xFF0071E3), width: 1.5),
              ),
            ),
          ),

          if (_isSearching) ...[
            const SizedBox(height: 4),
            const LinearProgressIndicator(minHeight: 2, color: Color(0xFF0071E3), backgroundColor: Colors.transparent),
          ],

          const SizedBox(height: 12),

          // Results List
          ConstrainedBox(
            constraints: const BoxConstraints(maxHeight: 280),
            child: _results.isEmpty
                ? const Padding(
                    padding: EdgeInsets.all(24),
                    child: Text(
                      'لم يتم العثور على نتائج مطابقة',
                      style: TextStyle(color: Color(0xFF94A3B8), fontSize: 12),
                    ),
                  )
                : ListView.separated(
                    shrinkWrap: true,
                    itemCount: _results.length,
                    separatorBuilder: (_, __) => const Divider(color: Colors.white10, height: 1),
                    itemBuilder: (context, index) {
                      final item = _results[index];
                      return ListTile(
                        contentPadding: const EdgeInsets.symmetric(horizontal: 4, vertical: 2),
                        leading: Container(
                          padding: const EdgeInsets.all(8),
                          decoration: BoxDecoration(
                            color: const Color(0xFF1E293B),
                            borderRadius: BorderRadius.circular(8),
                          ),
                          child: Icon(item.typeIcon, color: const Color(0xFF38BDF8), size: 18),
                        ),
                        title: Text(
                          item.name,
                          style: const TextStyle(color: Colors.white, fontSize: 12.5, fontWeight: FontWeight.bold),
                        ),
                        subtitle: Text(
                          '${item.region} • ${item.typeLabelArabic}',
                          style: const TextStyle(color: Color(0xFF94A3B8), fontSize: 10.5),
                        ),
                        onTap: () {
                          Navigator.pop(context);
                          widget.onDestinationSelected(item, false); // Preview route with fit bounds
                        },
                        trailing: ElevatedButton.icon(
                          onPressed: () {
                            Navigator.pop(context);
                            widget.onDestinationSelected(item, true); // Direct start navigation
                          },
                          icon: const Icon(Icons.navigation, size: 13),
                          label: const Text('انطلق', style: TextStyle(fontSize: 11)),
                          style: ElevatedButton.styleFrom(
                            backgroundColor: const Color(0xFF0071E3),
                            foregroundColor: Colors.white,
                            padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
                            minimumSize: Size.zero,
                            tapTargetSize: MaterialTapTargetSize.shrinkWrap,
                            shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(8)),
                          ),
                        ),
                      );
                    },
                  ),
          ),
        ],
      ),
    );
  }
}