Ajout et suppression dans la playlist.

Début de l'ajout d'une image à la playlist.

Sources/dafl_project_flutter/lib/api/api.dart

@@ -1,5 +1,7 @@
 import 'dart:convert';
+import 'dart:io';
 import 'dart:math';
+import 'dart:typed_data';
 import 'package:dafl_project_flutter/main.dart';
 import 'package:http/http.dart' as http;
 import 'package:crypto/crypto.dart';
@@ -176,14 +178,41 @@ class Api {
     return info;
   }
 
-  addToPLaylist(String id) async {
-    dynamic res = await _getPlaylist();
-    if (!res) {
-      res = await _createPlaylist();
+  Future<bool> _isInPlaylist(String idTrack, String idPlaylist) async {
+    var url = Uri.https('api.spotify.com', 'v1/playlists/$idPlaylist/tracks',
+        {'limit': '50', 'fields': 'items(track(id))'});
+    var token = await _getAccessToken();
+    _setResponse(await _client.get(url, headers: <String, String>{
+      'Authorization': '$_tokenType $token',
+      'Content-Type': 'application/json'
+    }));
+    var decodedResponse = jsonDecode(utf8.decode(_response.bodyBytes)) as Map;
+    var res = decodedResponse['items']
+        .where((element) => element['track']['id'] == idTrack)
+        .toList();
+    if (res.length >= 1) {
+      return true;
     }
+    return false;
+  }
+
+  addToPLaylist(String idTrack) async {
+    var idPlaylist = await _getPlaylist();
+    if (idPlaylist == null) {
+      idPlaylist = await _createPlaylist();
+    } else {
+      if (await _isInPlaylist(idTrack, idPlaylist)) return;
+    }
+    var token = await _getAccessToken();
+    var url = Uri.https('api.spotify.com', 'v1/playlists/$idPlaylist/tracks',
+        {'uris': 'spotify:track:$idTrack'});
+    _setResponse(await _client.post(url, headers: <String, String>{
+      'Authorization': '$_tokenType $token',
+      'Content-Type': 'application/json'
+    }));
   }
 
-  dynamic _getPlaylist() async {
+  Future<String?> _getPlaylist() async {
     var url = Uri.https('api.spotify.com', 'v1/me/playlists', {'limit': '50'});
     var token = await _getAccessToken();
     _setResponse(await _client.get(url, headers: <String, String>{
@@ -198,7 +227,7 @@ class Api {
       return daflplaylist[0]['uri'].substring(
           17); //17 char because format is 'spotify:playlist:MYPLAYLISTID'
     }
-    return false;
+    return null;
   }
 
   _createPlaylist() async {
@@ -218,7 +247,44 @@ class Api {
           'public': 'true'
         })));
     var decodedResponse = jsonDecode(utf8.decode(_response.bodyBytes)) as Map;
-    return decodedResponse['id'];
+    var idPlaylist = decodedResponse['id'];
+    url = Uri.https('api.spotify.com', 'v1/playlists/playlist_id/images');
+    String imagePath = 'assets/images/icon_App.png';
+    File imagefile = File(imagePath);
+    Uint8List imagebytes = await imagefile.readAsBytes();
+    String base64string = base64.encode(imagebytes);
+    _setResponse(await _client.put(url,
+        headers: <String, String>{
+          'Accept': 'application/json',
+          'Authorization': '$_tokenType $token',
+          'Content-Type': 'application/json'
+        },
+        body: base64string));
+    decodedResponse = jsonDecode(utf8.decode(_response.bodyBytes)) as Map;
+    return idPlaylist;
+  }
+
+  removeFromPlaylist(String idTrack) async {
+    var idPlaylist = await _getPlaylist();
+    if (idPlaylist == null) {
+      return;
+    }
+    if (await _isInPlaylist(idTrack, idPlaylist)) {
+      var token = await _getAccessToken();
+      var url = Uri.https('api.spotify.com', 'v1/playlists/$idPlaylist/tracks');
+      var jsonVar = jsonEncode(<String, List>{
+        "tracks": [
+          {'uri': 'spotify:track:$idTrack'}
+        ]
+      });
+      jsonEncode(<String, String>{'uri': 'spotify:track:$idTrack'});
+      _setResponse(await _client.delete(url,
+          headers: <String, String>{
+            'Authorization': '$_tokenType $token',
+            'Content-Type': 'application/json'
+          },
+          body: jsonVar));
+    }
   }
 
   Future<String> getIdUser() async {

Sources/dafl_project_flutter/lib/api/in_app_browser.dart

@@ -27,9 +27,8 @@ class MyInAppBrowser extends InAppBrowser {
     if (url!.origin + url.path == MyApp.api.redirectUri) {
       try {
         await MyApp.api.requestUserAuthorization(url);
-        //TODO : finir d'implémenter : addToPlaylist
-        //var id = await MyApp.api.getCurrentlyPlayingTrack();
-        //await MyApp.api.addToPLaylist(id);
+        /*var id = await MyApp.api.getCurrentlyPlayingTrack();
+        await MyApp.api.addToPLaylist(id);*/ //TODO : end the adding of playlist image
       } on ApiException {
         // TODO : add notification to show that an error occured
       } finally {

Sources/dafl_project_flutter/lib/controller/controller.dart

@@ -15,6 +15,10 @@ class Controller {
 
   late User currentUser;
 
+  Controller() {
+    currentUser = User('', ''); //TODO : remove this line
+  }
+
   void save(User userToSave) {
     saver.save(userToSave);
   }