Can determine post access level

src/data/post.rs

@@ -5,6 +5,7 @@
 use crate::data::group_id::GroupID;
 use crate::data::user::UserID;
 
+#[derive(PartialEq)]
 #[allow(non_camel_case_types)]
 pub enum PostVisibilityLevel {
     //Posts that can be seen by anyone
@@ -31,6 +32,33 @@ impl PostVisibilityLevel {
     }
 }
 
+/// Post access level (for a given user)
+#[allow(non_camel_case_types)]
+pub enum PostAccessLevel {
+    //When a user can't access to a post
+    NO_ACCESS = 0,
+
+    //When a user can see a post and perform basic actions such as liking
+    BASIC_ACCESS = 1,
+
+    //When a user has intermediate access to the post (delete post)
+    INTERMEDIATE_ACCESS = 2,
+
+    //When a user has a full access to the post
+    FULL_ACCESS = 3,
+}
+
+impl PostAccessLevel {
+    pub fn to_api(&self) -> String {
+        match self {
+            PostAccessLevel::NO_ACCESS => "no-access",
+            PostAccessLevel::BASIC_ACCESS => "basic",
+            PostAccessLevel::INTERMEDIATE_ACCESS => "intermediate",
+            PostAccessLevel::FULL_ACCESS => "full",
+        }.to_string()
+    }
+}
+
 #[allow(non_camel_case_types)]
 pub enum PostPageKind {
     PAGE_KIND_USER(UserID),

src/data/user.rs

@@ -26,6 +26,14 @@ impl UserID {
     pub fn is_valid(&self) -> bool {
         self.0 > 0
     }
+
+    /// Turn this `UserID` object as an instance. An invalid user id will become `None` variant
+    pub fn as_option(&self) -> Option<UserID> {
+        match self.is_valid() {
+            true => Some(self.clone()),
+            false => None,
+        }
+    }
 }
 
 #[derive(Debug, PartialEq)]