Implements mark as read

kordophone-db/src/models/conversation.rs

@@ -1,4 +1,4 @@
-use crate::models::participant::Participant;
+use crate::models::{message::Message, participant::Participant};
 use chrono::{DateTime, NaiveDateTime};
 use uuid::Uuid;
 
@@ -27,6 +27,36 @@ impl Conversation {
             display_name: self.display_name.clone(),
         }
     }
+
+    pub fn merge(&self, other: &Conversation, last_message: Option<&Message>) -> Conversation {
+        let mut new_conversation = self.clone();
+        new_conversation.unread_count = other.unread_count;
+        new_conversation.participants = other.participants.clone();
+        new_conversation.display_name = other.display_name.clone();
+
+        if let Some(last_message) = last_message {
+            if last_message.date > self.date {
+                new_conversation.date = last_message.date;
+            }
+
+            if !last_message.text.is_empty() && !last_message.text.trim().is_empty() {
+                new_conversation.last_message_preview = Some(last_message.text.clone());
+            }
+        }
+
+        new_conversation
+    }
+}
+
+impl PartialEq for Conversation {
+    fn eq(&self, other: &Self) -> bool {
+        self.guid == other.guid &&
+        self.unread_count == other.unread_count &&
+        self.display_name == other.display_name &&
+        self.last_message_preview == other.last_message_preview &&
+        self.date == other.date &&
+        self.participants == other.participants
+    }
 }
 
 impl From<kordophone::model::Conversation> for Conversation {