import 'package:flutter/material.dart';
import 'package:flutter_riverpod/flutter_riverpod.dart';
import 'package:real_estate_mobile/core/constants/app_colors.dart';
import 'package:real_estate_mobile/features/auth/presentation/providers/auth_provider.dart';
import 'package:real_estate_mobile/features/profile/presentation/providers/profile_provider.dart';
import 'package:real_estate_mobile/features/profile/presentation/widgets/profile_shared_widgets.dart';

class PrivacyTab extends ConsumerStatefulWidget {
  const PrivacyTab({super.key});

  @override
  ConsumerState<PrivacyTab> createState() => _PrivacyTabState();
}

class _PrivacyTabState extends ConsumerState<PrivacyTab> {
  String _profileVisibility = 'public';
  String _activityStatus = 'public';
  bool _isLoadingPrivacy = false;
  bool _isSavingPrivacy = false;
  bool _privacyLoaded = false;

  // Snapshot for cancel/reset
  String _origProfileVisibility = 'public';
  String _origActivityStatus = 'public';

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

  Future<void> _loadPrivacyPreferences() async {
    if (_privacyLoaded) return;
    setState(() => _isLoadingPrivacy = true);
    try {
      final role = ref.read(profileProvider).role;
      final repo = ref.read(profileRepositoryProvider);
      final data = await repo.getPrivacyPreferences(role);
      final privacy = data['privacySettings'] as Map<String, dynamic>? ?? {};
      setState(() {
        _profileVisibility =
            privacy['profile_visibility'] as String? ?? 'public';
        _activityStatus = privacy['activity_status'] as String? ?? 'public';
        _isLoadingPrivacy = false;
        _privacyLoaded = true;
        _origProfileVisibility = _profileVisibility;
        _origActivityStatus = _activityStatus;
      });
    } catch (_) {
      setState(() => _isLoadingPrivacy = false);
      _privacyLoaded = true;
    }
  }

  @override
  Widget build(BuildContext context) {
    if (_isLoadingPrivacy) {
      return const Center(
          child: CircularProgressIndicator(color: AppColors.accentOrange));
    }

    final isAgent = ref.read(profileProvider).role == 'AGENT';

    return SingleChildScrollView(
      padding: const EdgeInsets.symmetric(horizontal: 24, vertical: 16),
      child: Column(
        crossAxisAlignment: CrossAxisAlignment.start,
        children: [
          ProfileSectionCard(
            title: 'Privacy Settings',
            subtitle: 'Control your privacy and visibility preferences',
            child: Column(
              children: [
                // Profile Visibility — agent only
                if (isAgent) ...[
                  ProfileDropdownRow(
                    label: 'Profile Visibility',
                    description: 'Control who can see your profile',
                    value: _profileVisibility,
                    options: const {
                      'public': 'Public',
                      'connections': 'Connections Only',
                      'private': 'Private',
                    },
                    onChanged: (v) =>
                        setState(() => _profileVisibility = v ?? _profileVisibility),
                  ),
                  const Divider(height: 24, color: Color(0xFFE8E8E8)),
                ],
                // Activity Status — both agent and user
                ProfileDropdownRow(
                  label: 'Activity Status',
                  description: 'Show when you are active on the platform',
                  value: _activityStatus,
                  options: const {
                    'public': 'Everyone',
                    'connections': 'Connections Only',
                    'private': 'No One',
                  },
                  onChanged: (v) =>
                      setState(() => _activityStatus = v ?? _activityStatus),
                ),
              ],
            ),
          ),
          const SizedBox(height: 20),
          ProfileActionButtons(
              onSave: _savePrivacyPreferences,
              onCancel: () {
                setState(() {
                  _profileVisibility = _origProfileVisibility;
                  _activityStatus = _origActivityStatus;
                });
              },
              isSaving: _isSavingPrivacy),
          const SizedBox(height: 24),
          // Delete Account
          ProfileSectionCard(
            title: 'Delete Account',
            subtitle: 'Permanently delete your account and all data',
            child: SizedBox(
              width: double.infinity,
              child: OutlinedButton(
                onPressed: _deleteAccount,
                style: OutlinedButton.styleFrom(
                  foregroundColor: Colors.red,
                  side: const BorderSide(color: Colors.red, width: 1.5),
                  padding: const EdgeInsets.symmetric(vertical: 14),
                  shape: RoundedRectangleBorder(
                      borderRadius: BorderRadius.circular(15)),
                ),
                child: const Text('Delete Account',
                    style: TextStyle(
                        fontFamily: 'Fractul',
                        fontSize: 14,
                        fontWeight: FontWeight.w700)),
              ),
            ),
          ),
          const SizedBox(height: 32),
        ],
      ),
    );
  }

  Future<void> _savePrivacyPreferences() async {
    setState(() => _isSavingPrivacy = true);
    try {
      final role = ref.read(profileProvider).role;
      final repo = ref.read(profileRepositoryProvider);
      await repo.updatePrivacyPreferences(role, {
        'privacySettings': {
          'profile_visibility': _profileVisibility,
          'activity_status': _activityStatus,
        },
      });
      // Update the snapshot so a later Cancel doesn't revert the just-saved values
      if (mounted) {
        setState(() {
          _origProfileVisibility = _profileVisibility;
          _origActivityStatus = _activityStatus;
        });
      }
      _showSnackBar('Privacy settings saved');
    } catch (e) {
      _showSnackBar('Failed to save: $e', isError: true);
    } finally {
      if (mounted) setState(() => _isSavingPrivacy = false);
    }
  }

  Future<void> _deleteAccount() async {
    final confirmed = await showDialog<bool>(
      context: context,
      builder: (ctx) => AlertDialog(
        title: const Text('Delete Account',
            style: TextStyle(
                fontFamily: 'Fractul',
                fontWeight: FontWeight.w700,
                color: AppColors.primaryDark)),
        content: const Text(
          'Are you sure you want to delete your account? This action cannot be undone and all your data will be permanently removed.',
          style: TextStyle(
              fontFamily: 'SourceSerif4',
              fontSize: 14,
              color: AppColors.primaryDark),
        ),
        actions: [
          TextButton(
              onPressed: () => Navigator.pop(ctx, false),
              child: const Text('Cancel')),
          TextButton(
              onPressed: () => Navigator.pop(ctx, true),
              style: TextButton.styleFrom(foregroundColor: Colors.red),
              child: const Text('Delete')),
        ],
      ),
    );
    if (confirmed != true || !mounted) return;

    final doubleConfirmed = await showDialog<bool>(
      context: context,
      builder: (ctx) => AlertDialog(
        title: const Text('Final Confirmation',
            style: TextStyle(
                fontFamily: 'Fractul',
                fontWeight: FontWeight.w700,
                color: Colors.red)),
        content: const Text(
          'This will permanently delete your account, profile, and all associated data. Are you absolutely sure?',
          style: TextStyle(
              fontFamily: 'SourceSerif4',
              fontSize: 14,
              color: AppColors.primaryDark),
        ),
        actions: [
          TextButton(
              onPressed: () => Navigator.pop(ctx, false),
              child: const Text('Cancel')),
          TextButton(
            onPressed: () => Navigator.pop(ctx, true),
            style: TextButton.styleFrom(
                foregroundColor: Colors.white, backgroundColor: Colors.red),
            child: const Text('Yes, Delete My Account'),
          ),
        ],
      ),
    );
    if (doubleConfirmed != true || !mounted) return;

    try {
      final role = ref.read(profileProvider).role;
      final repo = ref.read(profileRepositoryProvider);
      await repo.deleteAccount(role);
      if (mounted) ref.read(authProvider.notifier).logout();
    } catch (e) {
      if (mounted) _showSnackBar('Failed to delete account: $e', isError: true);
    }
  }

  void _showSnackBar(String message, {bool isError = false}) {
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(
        content: Text(message),
        backgroundColor: isError ? Colors.red : const Color(0xFF638559),
      ),
    );
  }
}