Move to DB module for visibility; separate db and client code

koucha/src/db/item.rs

@@ -0,0 +1,68 @@
+use crate::{
+  Result,
+  AdapterPool,
+  db::{
+    ChannelId,
+    ItemId,
+  }
+};
+use chrono::{DateTime, Utc};
+
+pub struct UnparsedItem {
+  pub id: i64,
+  pub channel_id: i64,
+  pub guid: String,
+  pub fetched_at: String,
+  
+  pub title: Option<String>,
+  pub description: Option<String>,
+  pub content: Option<String>,
+}
+
+impl UnparsedItem {
+  pub fn parse(self) -> Result<Item> {
+    Ok(Item {
+      id: ItemId(self.id),
+      channel_id: ChannelId(self.channel_id),
+      guid: self.guid,
+      fetched_at: DateTime::parse_from_rfc2822(&self.fetched_at)?.with_timezone(&Utc),
+
+      title: self.title,
+      description: self.description,
+      content: self.content,
+    })
+  }
+}
+
+pub struct Item {
+  id: ItemId,
+  channel_id: ChannelId,
+  guid: String,
+  fetched_at: DateTime<Utc>,
+
+  title: Option<String>,
+  description: Option<String>,
+  content: Option<String>,
+}
+
+impl Item {
+  pub async fn get_or_create(
+    pool: &AdapterPool, from_channel: ChannelId, guid: &str,
+    fetched_at: DateTime<Utc>
+  ) -> Result<Self> {
+    let int_channel_id = i64::from(from_channel);
+    let last_fetched = fetched_at.to_rfc2822();
+
+    let item = sqlx::query_as!(
+      UnparsedItem,
+      "INSERT INTO items (channel_id, guid, fetched_at)
+       VALUES(?, ?, ?)
+       ON CONFLICT(id) DO UPDATE SET id = id
+       RETURNING id as `id!`, channel_id, guid, fetched_at, title, description, 
+         content",
+      int_channel_id, guid, last_fetched
+    ).fetch_one(&pool.0).await?.parse();
+
+    item
+  }
+}