Move all firbase dependencies from actions layer to firebaseService layer (#13)

app/services/comments/ICommentService.ts

@@ -1,15 +1,18 @@
 import { User } from 'domain/users'
 
-
-
+import { Comment } from 'domain/comments'
 
 /**
  * Comment service interface
- * 
+ *
  * @export
  * @interface ICommentService
  */
 export interface ICommentService {
 
+  addComment: (postId: string, comment: Comment) => Promise<string>
+  getComments: () => Promise< {[postId: string]: {[commentId: string]: Comment}} >
+  updateComment: (userId: string, postId: string, comment: Comment) => Promise<void>
+  deleteComment: (commentId: string, postId: string) => Promise<void>
 
-}
+}

app/services/comments/index.ts

@@ -2,4 +2,4 @@ import { ICommentService } from './ICommentService'
 
 export {
     ICommentService
-}
+}