import 'package:flutter_riverpod/flutter_riverpod.dart';

import '../../core/api/api_client.dart';
import '../../core/auth/auth_provider.dart';
import '../../shared/models/user.dart';

final profileServiceProvider = Provider<ProfileService>((ref) {
  return ProfileService(ref.read(apiClientProvider));
});

class UpdateProfileRequest {
  final String? name;
  final int? heightCm;
  final double? weightKg;
  final String? dateOfBirth;
  final String? gender;
  final String? activity;
  final String? goal;
  final String? language;
  final List<String>? mealTypes;
  final int? dailyCalories;

  const UpdateProfileRequest({
    this.name,
    this.heightCm,
    this.weightKg,
    this.dateOfBirth,
    this.gender,
    this.activity,
    this.goal,
    this.language,
    this.mealTypes,
    this.dailyCalories,
  });

  Map<String, dynamic> toJson() {
    final map = <String, dynamic>{};
    if (name != null) map['name'] = name;
    if (heightCm != null) map['height_cm'] = heightCm;
    if (weightKg != null) map['weight_kg'] = weightKg;
    if (dateOfBirth != null) map['date_of_birth'] = dateOfBirth;
    if (gender != null) map['gender'] = gender;
    if (activity != null) map['activity'] = activity;
    if (goal != null) map['goal'] = goal;
    if (dailyCalories != null) map['daily_calories'] = dailyCalories;
    // Build preferences patch — backend merges into existing JSONB.
    final prefPatch = <String, dynamic>{};
    if (language != null) prefPatch['language'] = language;
    if (mealTypes != null) prefPatch['meal_types'] = mealTypes;
    if (prefPatch.isNotEmpty) map['preferences'] = prefPatch;
    return map;
  }
}

class ProfileService {
  final ApiClient _client;
  ProfileService(this._client);

  Future<User> getProfile() async {
    final json = await _client.get('/profile');
    return User.fromJson(json);
  }

  Future<User> updateProfile(UpdateProfileRequest req) async {
    final json = await _client.put('/profile', data: req.toJson());
    return User.fromJson(json);
  }
}