Implemented mail notifications.

src/backend/user.rs

@@ -10,6 +10,7 @@ cfg_if! { if #[cfg(feature = "ssr")] {
     use leptos_actix::{extract, redirect};
     use log::{info, warn};
     use crate::error::AppError;
+    use crate::backend::get_pool;
 
     pub async fn has_admin_user(pool: &PgPool) -> Result<bool, Error> {
         let count: (i64,) = query_as(r#"SELECT COUNT(id) FROM "user" WHERE admin = $1"#)
@@ -68,6 +69,36 @@ cfg_if! { if #[cfg(feature = "ssr")] {
             false
         }
     }
+
+    pub async fn admin_email() -> Option<String> {
+        let pool = get_pool().await.ok()?;
+        let mail: Result<(String,), Error> = query_as(r#"SELECT email FROM "user" WHERE login = 'admin'"#)
+            .fetch_one(&pool)
+            .await;
+
+        if let Ok(m) = mail {
+            Some(m.0)
+        } else {
+            None
+        }
+    }
+
+    pub async fn emails_for_notify() -> Result<Vec<String>, ServerFnError> {
+        let pool = get_pool().await?;
+        let mails: Result<Vec<(String,)>, Error> = query_as(r#"SELECT email FROM "user" WHERE (email IS NOT NULL OR email <> '') AND get_emails = true"#)
+            .fetch_all(&pool)
+            .await;
+
+        if let Err(e) = mails {
+            if matches!(e, Error::RowNotFound) {
+                Ok(vec![])
+            } else {
+                Err(e.into())
+            }
+        } else {
+            Ok(mails.unwrap().into_iter().map(|m| m.0).collect())
+        }
+    }
 }}
 
 #[server]