Can get the list of friends of another user

src/controllers/friends_controller.rs

@@ -5,7 +5,7 @@
 use crate::api_data::friend_api::FriendAPI;
 use crate::controllers::routes::RequestResult;
 use crate::data::http_request_handler::HttpRequestHandler;
-use crate::helpers::{account_helper, friends_helper};
+use crate::helpers::{account_helper, friends_helper, user_helper};
 
 /// Get the list of friends of the current user
 pub fn get_list(r: &mut HttpRequestHandler) -> RequestResult {
@@ -18,3 +18,20 @@ pub fn get_list(r: &mut HttpRequestHandler) -> RequestResult {
 
     r.set_response(FriendAPI::from_list(&list))
 }
+
+/// Get the list of friends of another user
+pub fn get_other_user_list(r: &mut HttpRequestHandler) -> RequestResult {
+    let user_id = r.post_user_id("userID")?;
+
+    if !user_helper::can_see_user_page(&r.user_id_or_invalid(), &user_id)? {
+        r.forbidden("You can not access this user information!".to_string())?;
+    }
+
+    if !user_helper::is_user_friends_list_public(&user_id)? {
+        r.forbidden("The friend list of this user is not public!".to_string())?;
+    }
+
+    let friends = friends_helper::get_list(&user_id)?;
+
+    r.set_response(friends.iter().map(|f| f.friend_id.id()).collect::<Vec<u64>>())
+}

src/controllers/routes.rs

@@ -91,6 +91,8 @@ pub fn get_routes() -> Vec<Route> {
         // Friends controller
         Route::post("/friends/getList", Box::new(friends_controller::get_list)),
 
+        Route::post("/friends/get_user_list", Box::new(friends_controller::get_other_user_list)),
+
         // Conversations controller
         Route::post("/conversations/create", Box::new(conversations_controller::create)),
 

src/data/http_request_handler.rs

@@ -379,6 +379,11 @@ impl HttpRequestHandler {
         self.curr_user_id.clone()
     }
 
+    /// Get current user ID, return invalid user id value if there is none
+    pub fn user_id_or_invalid(&self) -> UserID {
+        self.user_id_opt().unwrap_or(UserID::invalid())
+    }
+
     /// Get an email included in the request
     pub fn post_email(&mut self, name: &str) -> ResultBoxError<String> {
         let mail = self.post_string(name)?;

src/helpers/user_helper.rs

@@ -111,6 +111,11 @@ pub fn allow_posts_on_his_page(user_id: &UserID) -> ResultBoxError<bool> {
     Ok(find_user_by_id(user_id)?.allow_posts_from_friends)
 }
 
+/// Check out whether the friends list of a user is public or not
+pub fn is_user_friends_list_public(user_id: &UserID) -> ResultBoxError<bool> {
+    Ok(find_user_by_id(user_id)?.public_friends_list)
+}
+
 /// Check out if a user can create posts on another user page
 pub fn can_create_posts(user_id: &UserID, target_id: &UserID) -> ResultBoxError<bool> {