import 'package:dio/dio.dart';
import 'package:flutter_android_app/components/locale/l10n/app_localizations.dart';
import 'package:flutter_android_app/components/utils/error_callback.dart';
import 'package:flutter_android_app/data/dtos/coins_dto.dart';
import 'package:flutter_android_app/data/dtos/search_coins_dto.dart';
import 'package:flutter_android_app/data/mappers/crypto_mapper.dart';
import 'package:flutter_android_app/repositories/api_interface.dart';
import 'package:pretty_dio_logger/pretty_dio_logger.dart';

import '../domain/models/home.dart';

class CryptoRepository extends ApiInterface {
  static const String _baseUrl = 'https://api.coingecko.com/api/v3';
  static const String _searchUrl = '/search';
  static const String _coinsDataUrl = '/coins/markets';

  static const String _apiKey = 'CG-oer6F3AAhVpNxGDxc7mjzZCo';

  static final Dio _dio = Dio()
    ..interceptors.add(PrettyDioLogger(
      requestBody: true,
      requestHeader: true,
    ));

  @override
  Future<HomeData?> loadData({
    OnErrorCallback? onError,
    String? search,
    int page = 1,
    int pageSize = 20,
    AppLocale? locale,
  }) async {
    try {
      Map<String, dynamic> queryParams = {
        'x_cg_demo_api_key': _apiKey,
        'vs_currency': _getCurrencyName(locale?.localeName),
        'per_page': pageSize,
        'page': page,
      };

      if (search != null && search.isNotEmpty) {
        final Response<dynamic> searchResponse = await _dio.get<Map<dynamic, dynamic>>(
            '$_baseUrl$_searchUrl',
            queryParameters: {
              'x_cg_demo_api_key': _apiKey,
              'query': search,
            }
        );

        final SearchCoinsDto searchCoinsDto = SearchCoinsDto.fromJson(searchResponse.data as Map<String, dynamic>);
        if (searchCoinsDto.coins != null) {
          String ids = '';
          for (var coinData in searchCoinsDto.coins!) {
            ids += coinData.id != null ? '${coinData.id},' : '';
          }

          if (ids.isEmpty) {
            return HomeData();
          }

          queryParams['ids'] = ids;
        }
      }

      final response = await _dio.get(
        '$_baseUrl$_coinsDataUrl',
        queryParameters: queryParams,
      );

      final CoinsDto dto = CoinsDto.fromJson(response.data as List<dynamic>);
      final HomeData data = dto.toDomain(locale, page);
      return data;

    } on DioException catch (e) {
      onError?.call(e.error?.toString());
      return null;
    }
  }

  @override
  Future<HomeData?> loadDataWithIds({
    OnErrorCallback? onError,
    List<String> ids = const [],
    int page = 1,
    int pageSize = 20,
    AppLocale? locale,
  }) async {
    try {
      Map<String, dynamic> queryParams = {
        'x_cg_demo_api_key': _apiKey,
        'vs_currency': _getCurrencyName(locale?.localeName),
        'per_page': pageSize,
        'page': page,
      };

      String idsCommaSeparated = '';
      for (var id in ids) {
        idsCommaSeparated += '$id,';
      }
      if (ids.isEmpty) {
        return HomeData();
      }
      queryParams['ids'] = idsCommaSeparated;

      final response = await _dio.get(
        '$_baseUrl$_coinsDataUrl',
        queryParameters: queryParams,
      );

      final CoinsDto dto = CoinsDto.fromJson(response.data as List<dynamic>);
      final HomeData data = dto.toDomain(locale, page);
      return data;

    } on DioException catch (e) {
      onError?.call(e.error?.toString());
      return null;
    }
  }

  String _getCurrencyName(String? localeName) {
    if (localeName == null) {
      return 'usd';
    }

    return switch (localeName) {
      'ru' => 'rub',
      _ => 'usd',
    };
  }
}