You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
84 lines
2.8 KiB
84 lines
2.8 KiB
import 'dart:convert';
|
|
import 'dart:math';
|
|
import '../../exceptions/api_state_exception.dart';
|
|
import 'package:http/http.dart' as http;
|
|
import 'package:crypto/crypto.dart';
|
|
import '../http_response_verification.dart';
|
|
import 'token_spotify.dart';
|
|
|
|
class ApiSpotifyIdentification extends HttpResponseVerification {
|
|
static const String clientId = '7ceb49d874b9404492246027e4d68cf8';
|
|
final String _clientSecret = '98f9cb960bf54ebbb9ad306e7ff919cb';
|
|
final String _scopes =
|
|
'user-read-playback-state user-read-currently-playing user-read-recently-played playlist-modify-public ugc-image-upload user-modify-playback-state';
|
|
|
|
late String _state;
|
|
late String _codeVerifier;
|
|
late String _codeChallenge;
|
|
late String _encodedLogs;
|
|
|
|
String? _code;
|
|
|
|
String get redirectUri => 'https://codefirst.iut.uca.fr/containers/apiredirect-felixmielcarek/';
|
|
|
|
Uri get urlAuthorize => Uri.https('accounts.spotify.com', 'authorize', {
|
|
'client_id': clientId,
|
|
'response_type': 'code',
|
|
'redirect_uri': redirectUri,
|
|
'state': _state,
|
|
'scope': _scopes,
|
|
'show_dialog': 'false',
|
|
'code_challenge_method': 'S256',
|
|
'code_challenge': _codeChallenge
|
|
});
|
|
|
|
ApiSpotifyIdentification() {
|
|
_state = _generateRandomString(16);
|
|
_codeVerifier = _generateRandomString(_generateRandomInt(43, 128));
|
|
_codeChallenge = _generateCodeChallenge();
|
|
_encodedLogs = base64.encode(utf8.encode("$clientId:$_clientSecret"));
|
|
}
|
|
|
|
_generateRandomInt(int min, int max) {
|
|
return min + Random().nextInt(max - min);
|
|
}
|
|
|
|
_generateRandomString(int length) {
|
|
const chars =
|
|
'AaBbCcDdEeFfGgHhIiJjKkLlMmNnOoPpQqRrSsTtUuVvWwXxYyZz1234567890';
|
|
return String.fromCharCodes(Iterable.generate(
|
|
length, (_) => chars.codeUnitAt(Random().nextInt(chars.length))));
|
|
}
|
|
|
|
_generateCodeChallenge() {
|
|
return base64Encode(sha256.convert(utf8.encode(_codeVerifier)).bytes)
|
|
.replaceAll('+', '-')
|
|
.replaceAll('/', '_')
|
|
.replaceAll('=', '');
|
|
}
|
|
|
|
setCode(Uri url) async {
|
|
if (url.queryParameters['state'] != _state.toString()) {
|
|
throw ApiStateException();
|
|
}
|
|
_code = url.queryParameters['code'];
|
|
}
|
|
|
|
Future<TokenSpotify> createToken() async {
|
|
var urlToken = Uri.https('accounts.spotify.com', 'api/token', {
|
|
'code': _code,
|
|
'redirect_uri': redirectUri,
|
|
'grant_type': 'authorization_code',
|
|
'client_id': clientId,
|
|
'code_verifier': _codeVerifier
|
|
});
|
|
setResponse(await http.post(urlToken, headers: <String, String>{
|
|
'Authorization': 'Basic $_encodedLogs',
|
|
'Content-Type': 'application/x-www-form-urlencoded'
|
|
}));
|
|
var decodedResponse = jsonDecode(utf8.decode(response.bodyBytes)) as Map;
|
|
return TokenSpotify(decodedResponse['access_token'],
|
|
decodedResponse['refresh_token'], decodedResponse['expires_in']);
|
|
}
|
|
}
|