import 'dart:async';

// ignore: uri_does_not_exist
import 'cookie_client_stub.dart'
    // ignore: uri_does_not_exist
    if (dart.library.html) 'browser_cookie_client.dart'
    // ignore: uri_does_not_exist
    if (dart.library.io) 'io_cookie_client.dart';

import 'package:meta/meta.dart';
import 'package:graphql_flutter/graphql_flutter.dart';
import 'package:imagini/graphql/imagini_graphql.dart';

class APIProvider{
  String _server, _accessToken, _refreshToken;

  GraphQLClient _client;
  HttpLink httpLink;
  // CookieLink cookieLink;
  static const String _GRAPHQL_ENDPOINT = "/query";

  APIProvider({
    @required String server,
    String accessToken,
    String refreshToken
  }) {
    _server = server;
    _accessToken = accessToken;
    _refreshToken = refreshToken;
    httpLink = HttpLink(_server + _GRAPHQL_ENDPOINT,
      httpClient: getCookieClient(),
    );

    // cookieLink = CookieLink(_updateAccessToken, _updateRefreshToken);
    _client = GraphQLClient(
      cache: GraphQLCache(),
      link: httpLink,
    );
  }

  // void _updateAccessToken(_accessToken) {
  //   print("Updating Access Token: $_accessToken");
  //   this._accessToken = _accessToken;
  // }

  // void _updateRefreshToken(_refreshToken) {
  //   print("Updating Refresh Token: $_accessToken");
  //   this._refreshToken = _refreshToken;
  // }

  Future<Login$Query$AuthResponse> login([
    String username,
    String password,
  ]) async {
    assert(
      (username != null && password != null)
    );

    QueryResult response = await _client.query(
      QueryOptions(
        document: LoginQuery().document,
        variables: {
          "user": username,
          "password": password
        },
      )
    );

    final loginResponse = Login$Query.fromJson(response.data);
    return loginResponse.login;
  }

  Future<Me$Query$User> me() async {
    QueryResult response = await _client.query(
      QueryOptions(
        document: MeQuery().document,
      )
    );

    final meResponse = Me$Query.fromJson(response.data);
    return meResponse.me;
  }

  Future<String> mediaItems([
    String startDate,
    String endDate,
    String albumID,
    List<String> tagID,
    String type,    // TODO: Make enum
    int page,
  ]) async {
    // Query:
    //    /api/v1/MediaItems
    // Derive Params:
    //    startDate:
    //       &createdAt=>2020-10-10T10:10:10
    //    endDate:
    //       &createdAt=<2020-10-10T10:10:10
    //    albumID:
    //       &albumID=9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d
    //    tagID:
    //       &tagID=9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d,9b1deb4d-3b7d-4bad-9bdd-2b0d7b3dcb6d
    //    type:
    //       &type=Photos
    //       &type=Videos
    //    page:
    //       &page=4

    // Returns:
    //    {
    //    
    //    }

    return null;
  }
  
  Future<String> tags([
    int page
  ]) async {
    // Query:
    //    /api/v1/Tags
    // Derive Params:
    //    page:
    //       &page=4
    return null;
  }
  
  Future<String> albums([
    int page
  ]) async {
    // Query:
    //    /api/v1/Albums
    // Derive Params:
    //    page:
    //       &page=4
    return null;
  }
  
  Future<String> me() async {
    return null;
  }

  void dispose() {}
}