add: "ask about this" from neospring

crates/core/src/database/questions.rs

@@ -2,6 +2,7 @@ use std::collections::HashMap;
 use oiseau::cache::Cache;
 use tetratto_shared::unix_epoch_timestamp;
 use crate::model::addr::RemoteAddr;
+use crate::model::communities::Post;
 use crate::model::communities_permissions::CommunityPermission;
 use crate::model::uploads::{MediaType, MediaUpload};
 use crate::model::{
@@ -38,13 +39,26 @@ impl DataManager {
 
     auto_method!(get_question_by_id()@get_question_from_row -> "SELECT * FROM questions WHERE id = $1" --name="question" --returns=Question --cache-key-tmpl="atto.question:{}");
 
+    /// Get the post a given question is asking about.
+    pub async fn get_question_asking_about(
+        &self,
+        question: &Question,
+    ) -> Result<Option<(User, Post)>> {
+        Ok(if let Some(id) = question.context.asking_about {
+            let post = self.get_post_by_id(id).await?;
+            Some((self.get_user_by_id(post.owner).await?, post))
+        } else {
+            None
+        })
+    }
+
     /// Fill the given vector of questions with their owner as well.
     pub async fn fill_questions(
         &self,
         questions: Vec<Question>,
         ignore_users: &[usize],
-    ) -> Result<Vec<(Question, User)>> {
-        let mut out: Vec<(Question, User)> = Vec::new();
+    ) -> Result<Vec<(Question, User, Option<(User, Post)>)>> {
+        let mut out: Vec<(Question, User, Option<(User, Post)>)> = Vec::new();
 
         let mut seen_users: HashMap<usize, User> = HashMap::new();
         for question in questions {
@@ -53,7 +67,8 @@ impl DataManager {
             }
 
             if let Some(ua) = seen_users.get(&question.owner) {
-                out.push((question, ua.to_owned()));
+                let asking_about = self.get_question_asking_about(&question).await?;
+                out.push((question, ua.to_owned(), asking_about));
             } else {
                 let user = if question.owner == 0 {
                     User::anonymous()
@@ -62,7 +77,9 @@ impl DataManager {
                 };
 
                 seen_users.insert(question.owner, user.clone());
-                out.push((question, user));
+
+                let asking_about = self.get_question_asking_about(&question).await?;
+                out.push((question, user, asking_about));
             }
         }
 
@@ -72,12 +89,17 @@ impl DataManager {
     /// Filter to update questions to clean their owner for public APIs.
     pub fn questions_owner_filter(
         &self,
-        questions: &Vec<(Question, User)>,
-    ) -> Vec<(Question, User)> {
-        let mut out: Vec<(Question, User)> = Vec::new();
+        questions: &Vec<(Question, User, Option<(User, Post)>)>,
+    ) -> Vec<(Question, User, Option<(User, Post)>)> {
+        let mut out: Vec<(Question, User, Option<(User, Post)>)> = Vec::new();
 
         for mut question in questions.clone() {
             question.1.clean();
+
+            if question.2.is_some() {
+                question.2.as_mut().unwrap().0.clean();
+            }
+
             out.push(question);
         }