chore: adding new migration for notification and updating ERD

migrations/20231025145134_add_notification.sql

@@ -0,0 +1,25 @@
+CREATE TYPE notification_states
+  AS ENUM ('queued', 'processing', 'published', 'not-subscribed', 'wrong-scope', 'rate-limited');
+
+CREATE TABLE notification (
+    id         UUID         PRIMARY KEY DEFAULT gen_random_uuid(),
+    created_at TIMESTAMPTZ  NOT NULL DEFAULT now(),
+    type       VARCHAR(255) NOT NULL,
+    title      VARCHAR(255) NOT NULL,
+    body       VARCHAR(255) NOT NULL,
+    icon       VARCHAR(255) NOT NULL,
+    url        VARCHAR(255) NOT NULL
+);
+
+CREATE TABLE notification_status (
+    PRIMARY KEY (notification_id, subscriber_id),
+    created_at    TIMESTAMPTZ          NOT NULL DEFAULT now(),
+    updated_at    TIMESTAMPTZ          NOT NULL DEFAULT now(),
+    state        notification_states   NOT NULL,
+    notification_id  UUID                 NOT NULL REFERENCES notification (id) ON DELETE CASCADE,
+    subscriber_id    UUID                 NOT NULL REFERENCES subscriber (id) ON DELETE CASCADE
+);
+CREATE INDEX notification_delivery_subscriber_id ON notification_status (subscriber_id);
+CREATE INDEX notification_delivery_notification_id ON notification_status (notification_id);
+CREATE INDEX notification_delivery_state ON notification_status (state);
+CREATE INDEX notification_delivery_created_and_updated ON notification_status (created_at, updated_at);

migrations/ERD.md

@@ -40,23 +40,35 @@ erDiagram
     }
     subscription_watcher }o--o| project : "watching"
 
+    notification_states {
+        enum queued
+        enum processing
+        enum published
+        enum not-subscribed
+        enum wrong-scope
+        enum rate-limited
+    }
+    notification_states }|..|{ notification_status : "uses"
+
     notification {
         uuid id PK
-        uuid subscriber FK
+        timestamp created_at
         string type
         string title
         string body
+        string icon
         string url
     }
     notification }o--|| subscriber : "sent to"
 
-    notification_event {
-        uuid id PK
-        uuid message FK
-        enum name "queued, sent, delivered, read, deleted"
-        timestamp time
+    notification_status {
+        timestamp created_at
+        timestamp updated_at
+        enum state notification_states
+        uuid notification_id FK
+        uuid subscriber_id FK
     }
-    notification_event }o--|| notification : "for"
+    notification_status }o--|| notification : "for"
 
     webhook {
         uuid id PK