import 'dart:async';

import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../models/profile.dart';
import 'auth_provider.dart';
import 'supabase_provider.dart';

final currentUserIdProvider = Provider<String?>((ref) {
  final authState = ref.watch(authStateChangesProvider);
  return authState.maybeWhen(
    data: (state) => state.session?.user.id,
    orElse: () => ref.watch(sessionProvider)?.user.id,
  );
});

final currentProfileProvider = StreamProvider<Profile?>((ref) {
  final userId = ref.watch(currentUserIdProvider);
  if (userId == null) {
    return const Stream.empty();
  }
  final client = ref.watch(supabaseClientProvider);
  return client
      .from('profiles')
      .stream(primaryKey: ['id'])
      .eq('id', userId)
      .map((rows) => rows.isEmpty ? null : Profile.fromMap(rows.first));
});

final profilesProvider = StreamProvider<List<Profile>>((ref) {
  final client = ref.watch(supabaseClientProvider);
  return client
      .from('profiles')
      .stream(primaryKey: ['id'])
      .order('full_name')
      .map((rows) => rows.map(Profile.fromMap).toList());
});

final isAdminProvider = Provider<bool>((ref) {
  final profileAsync = ref.watch(currentProfileProvider);
  return profileAsync.maybeWhen(
    data: (profile) => profile?.role == 'admin',
    orElse: () => false,
  );
});