feat: add rss feeds and episode enclosure

apps/recorder/src/models/feeds/mod.rs

@@ -0,0 +1,131 @@
+mod registry;
+mod rss;
+mod subscription_episodes_feed;
+
+use ::rss::Channel;
+use async_trait::async_trait;
+pub use registry::Feed;
+pub use rss::{RssFeedItemTrait, RssFeedTrait};
+use sea_orm::{ActiveValue, DeriveEntityModel, entity::prelude::*};
+use serde::{Deserialize, Serialize};
+pub use subscription_episodes_feed::SubscriptionEpisodesFeed;
+use url::Url;
+
+use crate::{
+    app::AppContextTrait,
+    errors::{RecorderError, RecorderResult},
+};
+
+#[derive(
+    Debug, Serialize, Deserialize, Clone, PartialEq, Eq, DeriveActiveEnum, EnumIter, DeriveDisplay,
+)]
+#[sea_orm(rs_type = "String", db_type = "Enum", enum_name = "feed_type")]
+#[serde(rename_all = "snake_case")]
+pub enum FeedType {
+    #[sea_orm(string_value = "rss")]
+    Rss,
+}
+
+#[derive(
+    Debug, Serialize, Deserialize, Clone, PartialEq, Eq, DeriveActiveEnum, EnumIter, DeriveDisplay,
+)]
+#[sea_orm(rs_type = "String", db_type = "Enum", enum_name = "feed_source")]
+#[serde(rename_all = "snake_case")]
+pub enum FeedSource {
+    #[sea_orm(string_value = "subscription_episode")]
+    SubscriptionEpisode,
+}
+
+#[derive(Debug, Serialize, Deserialize, Clone, PartialEq, Eq, DeriveEntityModel)]
+#[sea_orm(table_name = "feeds")]
+pub struct Model {
+    pub created_at: DateTimeUtc,
+    pub updated_at: DateTimeUtc,
+    #[sea_orm(primary_key)]
+    pub id: i32,
+    #[sea_orm(indexed)]
+    pub token: String,
+    #[sea_orm(indexed)]
+    pub feed_type: FeedType,
+    #[sea_orm(indexed)]
+    pub feed_source: FeedSource,
+    pub subscriber_id: Option<i32>,
+    pub subscription_id: Option<i32>,
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelation)]
+pub enum Relation {
+    #[sea_orm(
+        belongs_to = "super::subscriptions::Entity",
+        from = "Column::SubscriptionId",
+        to = "super::subscriptions::Column::Id",
+        on_update = "Cascade",
+        on_delete = "Cascade"
+    )]
+    Subscription,
+    #[sea_orm(
+        belongs_to = "super::subscribers::Entity",
+        from = "Column::SubscriberId",
+        to = "super::subscribers::Column::Id",
+        on_update = "Cascade",
+        on_delete = "Cascade"
+    )]
+    Subscriber,
+}
+
+impl Related<super::subscriptions::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Subscription.def()
+    }
+}
+
+impl Related<super::subscribers::Entity> for Entity {
+    fn to() -> RelationDef {
+        Relation::Subscriber.def()
+    }
+}
+
+#[derive(Copy, Clone, Debug, EnumIter, DeriveRelatedEntity)]
+pub enum RelatedEntity {
+    #[sea_orm(entity = "super::subscribers::Entity")]
+    Subscriber,
+    #[sea_orm(entity = "super::subscriptions::Entity")]
+    Subscription,
+}
+
+#[async_trait]
+impl ActiveModelBehavior for ActiveModel {
+    async fn before_save<C>(mut self, _db: &C, insert: bool) -> Result<Self, DbErr>
+    where
+        C: ConnectionTrait,
+    {
+        if insert && let ActiveValue::NotSet = self.token {
+            let token = nanoid::nanoid!(10);
+            self.token = ActiveValue::Set(token);
+        }
+        Ok(self)
+    }
+}
+
+impl Model {
+    pub async fn find_rss_feed_by_token(
+        ctx: &dyn AppContextTrait,
+        token: &str,
+        api_base: &Url,
+    ) -> RecorderResult<Channel> {
+        let db = ctx.db();
+
+        let feed_model = Entity::find()
+            .filter(Column::Token.eq(token))
+            .filter(Column::FeedType.eq(FeedType::Rss))
+            .one(db)
+            .await?
+            .ok_or(RecorderError::ModelEntityNotFound {
+                entity: "Feed".into(),
+            })?;
+
+        let feed = Feed::from_model(ctx, feed_model).await?;
+
+        feed.into_rss_channel(ctx, api_base)
+    }
+}