add toggle interested in list organizer and tag

covas_mobile/lib/pages/ListItemByOrganizers.dart

@@ -94,6 +94,30 @@ class _MyHomePageState extends State<ListItemOrganizers> {
     });
   }
 
+  Future<Map<String, dynamic>> toggleInterested(String eventId) async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    var accessToken = prefs.getString("access_token") ?? "";
+    final url = Uri.parse("${globals.api}/events/${eventId}/interest");
+    if (accessToken.isNotEmpty) {
+      final response = await http.post(
+        url,
+        headers: {
+          "Content-Type": "application/json",
+          HttpHeaders.cookieHeader: "access_token=$accessToken"
+        },
+      );
+
+      if (response.statusCode != 200) {
+        throw (AppLocalizations.of(context)?.toogle_interest ??
+            "Error toogle interest: ${response.statusCode}");
+      }
+
+      var event = json.decode(response.body);
+      return event;
+    }
+    return {"interested": false, "interested_count": 0};
+  }
+
   // variable to call and store future list of posts
 
   // function to fetch data from api and return future list of posts
@@ -190,10 +214,39 @@ class _MyHomePageState extends State<ListItemOrganizers> {
 
           final dateLongue =
               DateFormat('EEEE d MMMM y', locale).format(startDate);
+          final countInterestedString =
+              AppLocalizations.of(context)?.count_interested ??
+                  "Interested people number";
+          final countInterested =
+              "${countInterestedString} : ${post.interestedCount}";
 
           return ListTile(
               title: Text('${post.name!}'),
-              subtitle: Text('${post.place!}\n${dateLongue}'),
+              subtitle:
+                  Text('${post.place!}\n${dateLongue}\n${countInterested}'),
+              trailing: IconButton(
+                  onPressed: () async {
+                    try {
+                      final result = await toggleInterested(post.id!);
+                      setState(() {
+                        post.interested = result["interested"];
+                        post.interestedCount = result["interested_count"];
+                      });
+                    } catch (e) {
+                      ScaffoldMessenger.of(context).showSnackBar(
+                        SnackBar(
+                            content: Text(
+                                AppLocalizations.of(context)?.error_update ??
+                                    "Error when updating")),
+                      );
+                    }
+                  },
+                  icon: Icon(
+                      post.interested ?? false
+                          ? Icons.favorite
+                          : Icons.favorite_border,
+                      color:
+                          post.interested ?? false ? Colors.red : Colors.grey)),
               onTap: () {
                 Navigator.push(
                     context,

covas_mobile/lib/pages/ListItemByTags.dart

@@ -121,6 +121,30 @@ class _MyHomePageState extends State<ListItemTags> {
     return body;
   }
 
+  Future<Map<String, dynamic>> toggleInterested(String eventId) async {
+    SharedPreferences prefs = await SharedPreferences.getInstance();
+    var accessToken = prefs.getString("access_token") ?? "";
+    final url = Uri.parse("${globals.api}/events/${eventId}/interest");
+    if (accessToken.isNotEmpty) {
+      final response = await http.post(
+        url,
+        headers: {
+          "Content-Type": "application/json",
+          HttpHeaders.cookieHeader: "access_token=$accessToken"
+        },
+      );
+
+      if (response.statusCode != 200) {
+        throw (AppLocalizations.of(context)?.toogle_interest ??
+            "Error toogle interest: ${response.statusCode}");
+      }
+
+      var event = json.decode(response.body);
+      return event;
+    }
+    return {"interested": false, "interested_count": 0};
+  }
+
   @override
   void initState() {
     super.initState();
@@ -168,6 +192,7 @@ class _MyHomePageState extends State<ListItemTags> {
   Widget buildPosts(List<Events> posts) {
     // ListView Builder to show data in a list
     String tag = AppLocalizations.of(context)?.item_tags ?? "Tags : ";
+
     return Scaffold(
       appBar: AppBar(
         // Here we take the value from the MyHomePage object that was created by
@@ -191,9 +216,39 @@ class _MyHomePageState extends State<ListItemTags> {
           final dateLongue =
               DateFormat('EEEE d MMMM y', locale).format(startDate);
 
+          final countInterestedString =
+              AppLocalizations.of(context)?.count_interested ??
+                  "Interested people number";
+          final countInterested =
+              "${countInterestedString} : ${post.interestedCount}";
+
           return ListTile(
               title: Text('${post.name!}'),
-              subtitle: Text('${post.place!}\n${dateLongue}'),
+              subtitle:
+                  Text('${post.place!}\n${dateLongue}\n${countInterested}'),
+              trailing: IconButton(
+                  onPressed: () async {
+                    try {
+                      final result = await toggleInterested(post.id!);
+                      setState(() {
+                        post.interested = result["interested"];
+                        post.interestedCount = result["interested_count"];
+                      });
+                    } catch (e) {
+                      ScaffoldMessenger.of(context).showSnackBar(
+                        SnackBar(
+                            content: Text(
+                                AppLocalizations.of(context)?.error_update ??
+                                    "Error when updating")),
+                      );
+                    }
+                  },
+                  icon: Icon(
+                      post.interested ?? false
+                          ? Icons.favorite
+                          : Icons.favorite_border,
+                      color:
+                          post.interested ?? false ? Colors.red : Colors.grey)),
               onTap: () {
                 Navigator.push(
                     context,