Make `/api/events` a firehose endpoint.

It now includes events for all channels. Clients are responsible for filtering.

The schema for channel events has changed; it now includes a channel name and ID, in the same format as the sender's name and ID. They also now include a `"type"` field, whose only valid value (as of this writing) is `"message"`.

This is groundwork for delivering message deletion (expiry) events to clients, and notifying clients of channel lifecycle events.

1 files changed, 0 insertions, 162 deletions

diff --git a/src/events/repo/broadcast.rs b/src/events/repo/broadcast.rs
deleted file mode 100644
index 6914573..0000000
--- a/src/events/repo/broadcast.rs
+++ /dev/null
@@ -1,162 +0,0 @@
-use sqlx::{sqlite::Sqlite, SqliteConnection, Transaction};
-
-use crate::{
-    clock::DateTime,
-    repo::{
-        channel::Channel,
-        login::{self, Login},
-        message,
-    },
-};
-
-pub trait Provider {
-    fn broadcast(&mut self) -> Broadcast;
-}
-
-impl<'c> Provider for Transaction<'c, Sqlite> {
-    fn broadcast(&mut self) -> Broadcast {
-        Broadcast(self)
-    }
-}
-
-pub struct Broadcast<'t>(&'t mut SqliteConnection);
-
-#[derive(Clone, Debug, Eq, PartialEq, serde::Serialize)]
-pub struct Message {
-    pub id: message::Id,
-    #[serde(skip)]
-    pub sequence: Sequence,
-    pub sender: Login,
-    pub body: String,
-    pub sent_at: DateTime,
-}
-
-impl<'c> Broadcast<'c> {
-    pub async fn create(
-        &mut self,
-        sender: &Login,
-        channel: &Channel,
-        body: &str,
-        sent_at: &DateTime,
-    ) -> Result<Message, sqlx::Error> {
-        let sequence = self.next_sequence_for(channel).await?;
-
-        let id = message::Id::generate();
-
-        let message = sqlx::query!(
-            r#"
-				insert into message
-					(id, channel, sequence, sender, body, sent_at)
-				values ($1, $2, $3, $4, $5, $6)
-				returning
-					id as "id: message::Id",
-                    sequence as "sequence: Sequence",
-					sender as "sender: login::Id",
-					body,
-					sent_at as "sent_at: DateTime"
-			"#,
-            id,
-            channel.id,
-            sequence,
-            sender.id,
-            body,
-            sent_at,
-        )
-        .map(|row| Message {
-            id: row.id,
-            sequence: row.sequence,
-            sender: sender.clone(),
-            body: row.body,
-            sent_at: row.sent_at,
-        })
-        .fetch_one(&mut *self.0)
-        .await?;
-
-        Ok(message)
-    }
-
-    async fn next_sequence_for(&mut self, channel: &Channel) -> Result<Sequence, sqlx::Error> {
-        let Sequence(current) = sqlx::query_scalar!(
-            r#"
-                -- `max` never returns null, but sqlx can't detect that
-                select max(sequence) as "sequence!: Sequence"
-                from message
-                where channel = $1
-            "#,
-            channel.id,
-        )
-        .fetch_one(&mut *self.0)
-        .await?;
-
-        Ok(Sequence(current + 1))
-    }
-
-    pub async fn expire(&mut self, expire_at: &DateTime) -> Result<(), sqlx::Error> {
-        sqlx::query!(
-            r#"
-                delete from message
-                where sent_at < $1
-            "#,
-            expire_at,
-        )
-        .execute(&mut *self.0)
-        .await?;
-
-        Ok(())
-    }
-
-    pub async fn replay(
-        &mut self,
-        channel: &Channel,
-        resume_at: Option<Sequence>,
-    ) -> Result<Vec<Message>, sqlx::Error> {
-        let messages = sqlx::query!(
-            r#"
-				select
-					message.id as "id: message::Id",
-                    sequence as "sequence: Sequence",
-					login.id as "sender_id: login::Id",
-					login.name as sender_name,
-					message.body,
-					message.sent_at as "sent_at: DateTime"
-				from message
-					join login on message.sender = login.id
-				where channel = $1
-					and coalesce(sequence > $2, true)
-				order by sequence asc
-			"#,
-            channel.id,
-            resume_at,
-        )
-        .map(|row| Message {
-            id: row.id,
-            sequence: row.sequence,
-            sender: Login {
-                id: row.sender_id,
-                name: row.sender_name,
-            },
-            body: row.body,
-            sent_at: row.sent_at,
-        })
-        .fetch_all(&mut *self.0)
-        .await?;
-
-        Ok(messages)
-    }
-}
-
-#[derive(
-    Debug,
-    Eq,
-    Ord,
-    PartialEq,
-    PartialOrd,
-    Clone,
-    Copy,
-    serde::Serialize,
-    serde::Deserialize,
-    sqlx::Type,
-)]
-#[serde(transparent)]
-#[sqlx(transparent)]
-pub struct Sequence(i64);