From: Luna <46259660+LunaticHacker@users.noreply.github.com>
Date: Fri, 8 Oct 2021 14:28:32 +0000 (+0530)
Subject: mark parent as read on reply (#1819)
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mark parent as read on reply (#1819)

* mark parent as read on reply

* mark as read only if you are the recipient

* mark mentions as read on reply
---

diff --git a/crates/api_crud/src/comment/create.rs b/crates/api_crud/src/comment/create.rs
index fb175179..7d49fe13 100644
--- a/crates/api_crud/src/comment/create.rs
+++ b/crates/api_crud/src/comment/create.rs
@@ -19,8 +19,12 @@ use lemmy_apub::{
   generate_apub_endpoint,
   EndpointType,
 };
-use lemmy_db_queries::{source::comment::Comment_, Crud, Likeable};
-use lemmy_db_schema::source::comment::*;
+use lemmy_db_queries::{
+  source::{comment::Comment_, person_mention::PersonMention_},
+  Crud,
+  Likeable,
+};
+use lemmy_db_schema::source::{comment::*, person_mention::PersonMention};
 use lemmy_db_views::comment_view::CommentView;
 use lemmy_utils::{
   utils::{remove_slurs, scrape_text_for_mentions},
@@ -168,6 +172,33 @@ impl PerformCrud for CreateComment {
       .await?
       .map_err(|_| ApiError::err("couldnt_update_comment"))?;
     }
+    // If its a reply, mark the parent as read
+    if let Some(parent_id) = data.parent_id {
+      let parent_comment = blocking(context.pool(), move |conn| {
+        CommentView::read(conn, parent_id, Some(person_id))
+      })
+      .await??;
+      if local_user_view.person.id == parent_comment.get_recipient_id() {
+        blocking(context.pool(), move |conn| {
+          Comment::update_read(conn, parent_id, true)
+        })
+        .await?
+        .map_err(|_| ApiError::err("couldnt_update_parent_comment"))?;
+      }
+      // If the parent has PersonMentions mark them as read too
+      let person_id = local_user_view.person.id;
+      let person_mention = blocking(context.pool(), move |conn| {
+        PersonMention::read_by_comment_and_person(conn, parent_id, person_id)
+      })
+      .await?;
+      if let Ok(mention) = person_mention {
+        blocking(context.pool(), move |conn| {
+          PersonMention::update_read(conn, mention.id, true)
+        })
+        .await?
+        .map_err(|_| ApiError::err("couldnt_update_person_mentions"))?;
+      }
+    }
 
     send_comment_ws_message(
       inserted_comment.id,
diff --git a/crates/db_queries/src/source/person_mention.rs b/crates/db_queries/src/source/person_mention.rs
index 774f7918..1adcc3c9 100644
--- a/crates/db_queries/src/source/person_mention.rs
+++ b/crates/db_queries/src/source/person_mention.rs
@@ -1,6 +1,6 @@
 use crate::Crud;
 use diesel::{dsl::*, result::Error, *};
-use lemmy_db_schema::{source::person_mention::*, PersonId, PersonMentionId};
+use lemmy_db_schema::{source::person_mention::*, CommentId, PersonId, PersonMentionId};
 
 impl Crud for PersonMention {
   type Form = PersonMentionForm;
@@ -44,6 +44,11 @@ pub trait PersonMention_ {
     conn: &PgConnection,
     for_recipient_id: PersonId,
   ) -> Result<Vec<PersonMention>, Error>;
+  fn read_by_comment_and_person(
+    conn: &PgConnection,
+    for_comment_id: CommentId,
+    for_recipient_id: PersonId,
+  ) -> Result<PersonMention, Error>;
 }
 
 impl PersonMention_ for PersonMention {
@@ -71,6 +76,17 @@ impl PersonMention_ for PersonMention {
     .set(read.eq(true))
     .get_results::<Self>(conn)
   }
+  fn read_by_comment_and_person(
+    conn: &PgConnection,
+    for_comment_id: CommentId,
+    for_recipient_id: PersonId,
+  ) -> Result<Self, Error> {
+    use lemmy_db_schema::schema::person_mention::dsl::*;
+    person_mention
+      .filter(comment_id.eq(for_comment_id))
+      .filter(recipient_id.eq(for_recipient_id))
+      .first::<Self>(conn)
+  }
 }
 
 #[cfg(test)]