feat(gpodder): add signup link admin methods

gpodder_sqlite/src/repository/auth.rs

@@ -7,6 +7,7 @@ use crate::{
     DbError,
     models::{
         session::Session,
+        signup_link::SignupLink,
         user::{NewUser, User},
     },
     schema::*,
@@ -23,6 +24,15 @@ impl From<User> for gpodder::User {
     }
 }
 
+impl From<SignupLink> for gpodder::SignupLink {
+    fn from(value: SignupLink) -> Self {
+        Self {
+            id: value.id,
+            time_created: DateTime::from_timestamp(value.created_at, 0).unwrap(),
+        }
+    }
+}
+
 impl gpodder::GpodderAuthStore for SqliteRepository {
     fn get_user(&self, username: &str) -> Result<Option<gpodder::models::User>, AuthErr> {
         Ok(users::table
@@ -170,4 +180,39 @@ impl gpodder::GpodderAuthStore for SqliteRepository {
         })()
         .map_err(AuthErr::from)
     }
+
+    fn get_signup_link(&self, id: i64) -> Result<Option<gpodder::SignupLink>, AuthErr> {
+        match signup_links::table
+            .find(id)
+            .select(SignupLink::as_select())
+            .first(&mut self.pool.get().map_err(DbError::from)?)
+            .optional()
+        {
+            Ok(Some(link)) => Ok(Some(gpodder::SignupLink::from(link))),
+            Ok(None) => Ok(None),
+            Err(err) => Err(DbError::from(err).into()),
+        }
+    }
+
+    fn insert_signup_link(&self, link: &gpodder::SignupLink) -> Result<(), AuthErr> {
+        diesel::insert_into(signup_links::table)
+            .values(SignupLink {
+                id: link.id,
+                created_at: link.time_created.timestamp(),
+            })
+            .execute(&mut self.pool.get().map_err(DbError::from)?)
+            .map_err(DbError::from)?;
+
+        Ok(())
+    }
+
+    fn remove_signup_link(&self, id: i64) -> Result<bool, AuthErr> {
+        match diesel::delete(signup_links::table.filter(signup_links::id.eq(id)))
+            .execute(&mut self.pool.get().map_err(DbError::from)?)
+        {
+            Ok(0) => Ok(false),
+            Ok(_) => Ok(true),
+            Err(err) => Err(DbError::from(err).into()),
+        }
+    }
 }