Can get the list of unread notifications

src/helpers/database.rs

@@ -304,6 +304,14 @@ impl<'a> RowResult<'a> {
         }
     }
 
+    /// Get an optional unsigned number  => Set to None if value is null / empty
+    pub fn get_optional_u64(&self, name: &str) -> ResultBoxError<Option<u64>> {
+        match self.is_null(name)? {
+            true => Ok(None),
+            false => Ok(Some(self.get_u64(name)?))
+        }
+    }
+
     pub fn get_u32(&self, name: &str) -> ResultBoxError<u32> {
         let value = self.row.get_opt(self.find_col(name)?);
 

src/helpers/notifications_helper.rs

@@ -4,6 +4,7 @@
 
 use crate::constants::database_tables_names::NOTIFICATIONS_TABLE;
 use crate::data::error::ResultBoxError;
+use crate::data::notification::{NotifElemType, NotifEventType, NotifEventVisibility, Notification};
 use crate::data::user::UserID;
 use crate::helpers::database;
 
@@ -14,4 +15,31 @@ pub fn count_unread(user_id: &UserID) -> ResultBoxError<u64> {
         .cond_legacy_bool("seen", false)
         .exec_count()
         .map(|c| c as u64)
+}
+
+/// Get the list of notifications of the user
+pub fn get_list_unread(user_id: &UserID) -> ResultBoxError<Vec<Notification>> {
+    database::QueryInfo::new(NOTIFICATIONS_TABLE)
+        .cond_user_id("dest_user_id", user_id)
+        .cond_legacy_bool("seen", false)
+        .set_order("id DESC")
+        .exec(db_to_notif)
+}
+
+/// Turn a database row into a notification object
+fn db_to_notif(row: &database::RowResult) -> ResultBoxError<Notification> {
+    Ok(Notification {
+        id: row.get_u64("id")?,
+        time_create: row.get_u64("time_create")?,
+        seen: row.get_legacy_bool("seen")?,
+        from_user_id: row.get_user_id("from_user_id")?,
+        dest_user_id: row.get_user_id("dest_user_id")?,
+        on_elem_id: row.get_u64("on_elem_id")?,
+        on_elem_type: NotifElemType::from_db(&row.get_str("on_elem_type")?),
+        kind: NotifEventType::from_db(&row.get_str("type")?),
+        visibility: NotifEventVisibility::from_db(&row.get_str("visibility")?),
+        container_id: row.get_optional_u64("from_container_id")?,
+        container_type: row.get_optional_str("from_container_type")?
+            .map(|s| NotifElemType::from_db(&s)),
+    })
 }