diff --git a/gpodder/src/lib.rs b/gpodder/src/lib.rs
index e834bcf..0f31248 100644
--- a/gpodder/src/lib.rs
+++ b/gpodder/src/lib.rs
@@ -1,166 +1,9 @@
 pub mod models;
 mod repository;
+mod store;
 
-use std::fmt::Display;
-
-use chrono::{DateTime, Utc};
 pub use models::*;
-
 pub use repository::GpodderRepository;
-
-#[derive(Debug)]
-pub enum AuthErr {
-    UnknownSession,
-    UnknownUser,
-    InvalidPassword,
-    Other(Box<dyn std::error::Error + Sync + Send>),
-}
-
-impl Display for AuthErr {
-    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
-        match self {
-            Self::UnknownUser => write!(f, "unknown user"),
-            Self::UnknownSession => write!(f, "unknown session"),
-            Self::InvalidPassword => write!(f, "invalid password"),
-            Self::Other(err) => err.fmt(f),
-        }
-    }
-}
-
-impl std::error::Error for AuthErr {}
-
-pub trait Store:
-    AuthStore + DeviceRepository + SubscriptionRepository + EpisodeActionRepository
-{
-}
-
-impl<T> Store for T where
-    T: AuthStore + DeviceRepository + SubscriptionRepository + EpisodeActionRepository
-{
-}
-
-pub trait AuthStore {
-    /// Retrieve the session with the given session ID
-    fn get_session(&self, session_id: i64) -> Result<Option<models::Session>, AuthErr>;
-
-    /// Retrieve the user with the given username
-    fn get_user(&self, username: &str) -> Result<Option<models::User>, AuthErr>;
-
-    /// Create a new session for a user with the given session ID
-    fn insert_session(&self, session: &Session) -> Result<(), AuthErr>;
-
-    /// Remove the session with the given session ID
-    fn remove_session(&self, session_id: i64) -> Result<(), AuthErr>;
-
-    /// Update the session's timestamp
-    fn refresh_session(&self, session: &Session, timestamp: DateTime<Utc>) -> Result<(), AuthErr>;
-
-    /// Remove any sessions whose last_seen timestamp is before the given minimum value
-    fn remove_old_sessions(&self, min_last_seen: DateTime<Utc>) -> Result<usize, AuthErr>;
-}
-
-pub trait DeviceRepository {
-    /// Return all devices associated with the user
-    fn devices_for_user(&self, user: &User) -> Result<Vec<Device>, AuthErr>;
-
-    /// Update the information for the given device. If the device doesn't exist yet, it should be
-    /// created without a sync group.
-    fn update_device_info(
-        &self,
-        user: &User,
-        device_id: &str,
-        patch: DevicePatch,
-    ) -> Result<(), AuthErr>;
-
-    /// Add the devices to the same sync group by:
-    ///
-    /// * Merging the sync groups of all devices already in a sync group
-    /// * Adding all devices not yet in a sync group to the newly merged sync group
-    ///
-    /// # Returns
-    ///
-    /// ID of the final sync group
-    fn merge_sync_groups(&self, user: &User, device_ids: Vec<&str>) -> Result<i64, AuthErr>;
-
-    /// Synchronize the sync group by adding or removing subscriptions to each device so that each
-    /// device's subscription state is the same
-    fn synchronize_sync_group(
-        &self,
-        group_id: i64,
-        time_changed: DateTime<Utc>,
-    ) -> Result<(), AuthErr>;
-
-    /// Remove the devices from their respective sync groups
-    fn remove_from_sync_group(&self, user: &User, device_ids: Vec<&str>) -> Result<(), AuthErr>;
-
-    /// Return all device IDs for the user, grouped per sync group
-    ///
-    /// # Returns
-    ///
-    /// A tuple (unsynced devices, sync groups)
-    fn devices_by_sync_group(
-        &self,
-        user: &User,
-    ) -> Result<(Vec<String>, Vec<Vec<String>>), AuthErr>;
-}
-
-pub trait SubscriptionRepository {
-    /// Return the subscriptions for the given device
-    fn subscriptions_for_device(
-        &self,
-        user: &User,
-        device_id: &str,
-    ) -> Result<Vec<models::Subscription>, AuthErr>;
-
-    /// Return all subscriptions for a given user
-    fn subscriptions_for_user(&self, user: &User) -> Result<Vec<models::Subscription>, AuthErr>;
-
-    /// Replace the list of subscriptions for a device and all devices in its sync group with the
-    /// given list
-    fn set_subscriptions_for_device(
-        &self,
-        user: &User,
-        device_id: &str,
-        urls: Vec<String>,
-        time_changed: DateTime<Utc>,
-    ) -> Result<(), AuthErr>;
-
-    /// Update the list of subscriptions for a device and all devices in its sync group by adding
-    /// and removing the given URLs
-    fn update_subscriptions_for_device(
-        &self,
-        user: &User,
-        device_id: &str,
-        add: Vec<String>,
-        remove: Vec<String>,
-        time_changed: DateTime<Utc>,
-    ) -> Result<(), AuthErr>;
-
-    /// Returns the changes in subscriptions since the given timestamp.
-    fn subscription_updates_for_device(
-        &self,
-        user: &User,
-        device_id: &str,
-        since: DateTime<Utc>,
-    ) -> Result<(Vec<Subscription>, Vec<Subscription>), AuthErr>;
-}
-
-pub trait EpisodeActionRepository {
-    /// Insert the given episode actions into the datastore.
-    fn add_episode_actions(
-        &self,
-        user: &User,
-        actions: Vec<EpisodeAction>,
-        time_changed: DateTime<Utc>,
-    ) -> Result<(), AuthErr>;
-
-    /// Retrieve the list of episode actions for the given user.
-    fn episode_actions_for_user(
-        &self,
-        user: &User,
-        since: Option<DateTime<Utc>>,
-        podcast: Option<String>,
-        device: Option<String>,
-        aggregated: bool,
-    ) -> Result<Vec<EpisodeAction>, AuthErr>;
-}
+pub use store::{
+    AuthErr, AuthStore, DeviceRepository, EpisodeActionRepository, Store, SubscriptionRepository,
+};
diff --git a/gpodder/src/repository.rs b/gpodder/src/repository.rs
index 942ef26..b8a4cd7 100644
--- a/gpodder/src/repository.rs
+++ b/gpodder/src/repository.rs
@@ -4,7 +4,10 @@ use argon2::{Argon2, PasswordHash, PasswordVerifier};
 use chrono::{DateTime, TimeDelta, Utc};
 use rand::Rng;
 
-use super::{models, AuthErr, Store};
+use crate::{
+    models,
+    store::{AuthErr, Store},
+};
 
 const MAX_SESSION_AGE: i64 = 60 * 60 * 24 * 7;
 
diff --git a/gpodder/src/store.rs b/gpodder/src/store.rs
new file mode 100644
index 0000000..4c9ddd7
--- /dev/null
+++ b/gpodder/src/store.rs
@@ -0,0 +1,161 @@
+use std::fmt::Display;
+
+use crate::models::*;
+use chrono::{DateTime, Utc};
+
+#[derive(Debug)]
+pub enum AuthErr {
+    UnknownSession,
+    UnknownUser,
+    InvalidPassword,
+    Other(Box<dyn std::error::Error + Sync + Send>),
+}
+
+impl Display for AuthErr {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            Self::UnknownUser => write!(f, "unknown user"),
+            Self::UnknownSession => write!(f, "unknown session"),
+            Self::InvalidPassword => write!(f, "invalid password"),
+            Self::Other(err) => err.fmt(f),
+        }
+    }
+}
+
+impl std::error::Error for AuthErr {}
+
+pub trait Store:
+    AuthStore + DeviceRepository + SubscriptionRepository + EpisodeActionRepository
+{
+}
+
+impl<T> Store for T where
+    T: AuthStore + DeviceRepository + SubscriptionRepository + EpisodeActionRepository
+{
+}
+
+pub trait AuthStore {
+    /// Retrieve the session with the given session ID
+    fn get_session(&self, session_id: i64) -> Result<Option<Session>, AuthErr>;
+
+    /// Retrieve the user with the given username
+    fn get_user(&self, username: &str) -> Result<Option<User>, AuthErr>;
+
+    /// Create a new session for a user with the given session ID
+    fn insert_session(&self, session: &Session) -> Result<(), AuthErr>;
+
+    /// Remove the session with the given session ID
+    fn remove_session(&self, session_id: i64) -> Result<(), AuthErr>;
+
+    /// Update the session's timestamp
+    fn refresh_session(&self, session: &Session, timestamp: DateTime<Utc>) -> Result<(), AuthErr>;
+
+    /// Remove any sessions whose last_seen timestamp is before the given minimum value
+    fn remove_old_sessions(&self, min_last_seen: DateTime<Utc>) -> Result<usize, AuthErr>;
+}
+
+pub trait DeviceRepository {
+    /// Return all devices associated with the user
+    fn devices_for_user(&self, user: &User) -> Result<Vec<Device>, AuthErr>;
+
+    /// Update the information for the given device. If the device doesn't exist yet, it should be
+    /// created without a sync group.
+    fn update_device_info(
+        &self,
+        user: &User,
+        device_id: &str,
+        patch: DevicePatch,
+    ) -> Result<(), AuthErr>;
+
+    /// Add the devices to the same sync group by:
+    ///
+    /// * Merging the sync groups of all devices already in a sync group
+    /// * Adding all devices not yet in a sync group to the newly merged sync group
+    ///
+    /// # Returns
+    ///
+    /// ID of the final sync group
+    fn merge_sync_groups(&self, user: &User, device_ids: Vec<&str>) -> Result<i64, AuthErr>;
+
+    /// Synchronize the sync group by adding or removing subscriptions to each device so that each
+    /// device's subscription state is the same
+    fn synchronize_sync_group(
+        &self,
+        group_id: i64,
+        time_changed: DateTime<Utc>,
+    ) -> Result<(), AuthErr>;
+
+    /// Remove the devices from their respective sync groups
+    fn remove_from_sync_group(&self, user: &User, device_ids: Vec<&str>) -> Result<(), AuthErr>;
+
+    /// Return all device IDs for the user, grouped per sync group
+    ///
+    /// # Returns
+    ///
+    /// A tuple (unsynced devices, sync groups)
+    fn devices_by_sync_group(
+        &self,
+        user: &User,
+    ) -> Result<(Vec<String>, Vec<Vec<String>>), AuthErr>;
+}
+
+pub trait SubscriptionRepository {
+    /// Return the subscriptions for the given device
+    fn subscriptions_for_device(
+        &self,
+        user: &User,
+        device_id: &str,
+    ) -> Result<Vec<Subscription>, AuthErr>;
+
+    /// Return all subscriptions for a given user
+    fn subscriptions_for_user(&self, user: &User) -> Result<Vec<Subscription>, AuthErr>;
+
+    /// Replace the list of subscriptions for a device and all devices in its sync group with the
+    /// given list
+    fn set_subscriptions_for_device(
+        &self,
+        user: &User,
+        device_id: &str,
+        urls: Vec<String>,
+        time_changed: DateTime<Utc>,
+    ) -> Result<(), AuthErr>;
+
+    /// Update the list of subscriptions for a device and all devices in its sync group by adding
+    /// and removing the given URLs
+    fn update_subscriptions_for_device(
+        &self,
+        user: &User,
+        device_id: &str,
+        add: Vec<String>,
+        remove: Vec<String>,
+        time_changed: DateTime<Utc>,
+    ) -> Result<(), AuthErr>;
+
+    /// Returns the changes in subscriptions since the given timestamp.
+    fn subscription_updates_for_device(
+        &self,
+        user: &User,
+        device_id: &str,
+        since: DateTime<Utc>,
+    ) -> Result<(Vec<Subscription>, Vec<Subscription>), AuthErr>;
+}
+
+pub trait EpisodeActionRepository {
+    /// Insert the given episode actions into the datastore.
+    fn add_episode_actions(
+        &self,
+        user: &User,
+        actions: Vec<EpisodeAction>,
+        time_changed: DateTime<Utc>,
+    ) -> Result<(), AuthErr>;
+
+    /// Retrieve the list of episode actions for the given user.
+    fn episode_actions_for_user(
+        &self,
+        user: &User,
+        since: Option<DateTime<Utc>>,
+        podcast: Option<String>,
+        device: Option<String>,
+        aggregated: bool,
+    ) -> Result<Vec<EpisodeAction>, AuthErr>;
+}