firestore rules for sessions (#50)

---------

Co-authored-by: Marcell Guilherme Costa da Silva <[email protected]>

firestore.rules

@@ -1,15 +1,19 @@
 rules_version = '2';
 service cloud.firestore {
   match /databases/{database}/documents {
-  	match /calls/{callId}/users/{document=**} {
-    	allow create: if
-      		request.auth.uid != null && request.auth.uid == request.resource.data.userUid;
+    match /session/{document=**} {
+      allow read, write: if
+        request.auth.uid != null;
+    }
+    match /calls/{callId}/users/{document=**} {
+      allow create: if
+          request.auth.uid != null && request.auth.uid == request.resource.data.userUid;
       allow read, list: if
           request.auth.uid != null;
       allow update: if
-      		request.auth.uid != null && get(/databases/$(database)/documents/calls/$(callId)).data.hostId == request.auth.uid;
+          request.auth.uid != null && get(/databases/$(database)/documents/calls/$(callId)).data.hostId == request.auth.uid;
       allow delete: if
-      		request.auth.uid != null && (get(/databases/$(database)/documents/calls/$(callId)).data.hostId == request.auth.uid || request.auth.uid == resource.data.userUid);
+          request.auth.uid != null && (get(/databases/$(database)/documents/calls/$(callId)).data.hostId == request.auth.uid || request.auth.uid == resource.data.userUid);
     }
     match /calls/{callId}/p2p-descriptions/{descriptionId} {
       allow create, update, delete: if
@@ -18,12 +22,12 @@ service cloud.firestore {
           request.auth.uid != null
     }
     match /calls/{document} {
-    	allow read: if
-      		request.auth.uid != null;
+      allow read: if
+          request.auth.uid != null;
       allow create: if
           request.auth.uid != null && request.auth.uid == request.resource.data.hostId;
-    	allow update, delete: if
-      		request.auth.uid != null && request.auth.uid == resource.data.hostId;
+      allow update, delete: if
+          request.auth.uid != null && request.auth.uid == resource.data.hostId;
     }
   }
-}
+}