🎉 Add scheduled (cron based) tasks subsystem.

backend/resources/migrations/0001.main.sql

@@ -3,7 +3,7 @@ CREATE EXTENSION IF NOT EXISTS "pgcrypto";
 
 -- Modified At
 
-CREATE OR REPLACE FUNCTION update_modified_at()
+CREATE FUNCTION update_modified_at()
   RETURNS TRIGGER AS $updt$
   BEGIN
     NEW.modified_at := clock_timestamp();

backend/resources/migrations/0002.users.sql

@@ -29,7 +29,7 @@ CREATE INDEX users__is_demo
    AND is_demo IS true;
 
 --- Table used for register all used emails by the user
-CREATE TABLE IF NOT EXISTS user_emails (
+CREATE TABLE user_emails (
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
 
   created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
@@ -46,7 +46,7 @@ CREATE INDEX user_emails__user_id__idx
 
 --- Table for user key value attributes
 
-CREATE TABLE IF NOT EXISTS user_attrs (
+CREATE TABLE user_attrs (
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
 
   created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
@@ -60,7 +60,7 @@ CREATE TABLE IF NOT EXISTS user_attrs (
 
 --- Table for store verification tokens
 
-CREATE TABLE IF NOT EXISTS tokens (
+CREATE TABLE tokens (
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
   token text NOT NULL,
 
@@ -72,7 +72,7 @@ CREATE TABLE IF NOT EXISTS tokens (
 
 --- Table for store user sessions.
 
-CREATE TABLE IF NOT EXISTS sessions (
+CREATE TABLE sessions (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
 
   created_at timestamptz NOT NULL DEFAULT clock_timestamp(),

backend/resources/migrations/0003.projects.sql

@@ -1,6 +1,6 @@
 -- Tables
 
-CREATE TABLE IF NOT EXISTS projects (
+CREATE TABLE projects (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
 
@@ -11,7 +11,10 @@ CREATE TABLE IF NOT EXISTS projects (
   name text NOT NULL
 );
 
-CREATE TABLE IF NOT EXISTS project_users (
+CREATE INDEX projects__user_id__idx
+    ON projects(user_id);
+
+CREATE TABLE project_users (
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
   project_id uuid NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
 
@@ -23,7 +26,13 @@ CREATE TABLE IF NOT EXISTS project_users (
   PRIMARY KEY (user_id, project_id)
 );
 
-CREATE TABLE IF NOT EXISTS project_files (
+CREATE INDEX project_users__user_id__idx
+    ON project_users(user_id);
+
+CREATE INDEX project_users__project_id__idx
+    ON project_users(project_id);
+
+CREATE TABLE project_files (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
   project_id uuid NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
@@ -35,7 +44,26 @@ CREATE TABLE IF NOT EXISTS project_files (
   deleted_at timestamptz DEFAULT NULL
 );
 
-CREATE TABLE IF NOT EXISTS project_file_users (
+CREATE INDEX project_files__user_id__idx
+    ON project_files(user_id);
+
+CREATE INDEX project_files__project_id__idx
+    ON project_files(project_id);
+
+CREATE TABLE project_file_media (
+  id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
+  file_id uuid NOT NULL REFERENCES project_files(id) ON DELETE CASCADE,
+
+  type text NOT NULL,
+  path text NOT NULL,
+
+  metadata bytea NULL DEFAULT NULL
+);
+
+CREATE INDEX project_file_media__file_id__idx
+    ON project_file_media(file_id);
+
+CREATE TABLE project_file_users (
   file_id uuid NOT NULL REFERENCES project_files(id) ON DELETE CASCADE,
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
 
@@ -47,7 +75,13 @@ CREATE TABLE IF NOT EXISTS project_file_users (
   PRIMARY KEY (user_id, file_id)
 );
 
-CREATE TABLE IF NOT EXISTS project_pages (
+CREATE INDEX project_file_users__user_id__idx
+    ON project_file_users(user_id);
+
+CREATE INDEX project_file_users__file_id__idx
+    ON project_file_users(file_id);
+
+CREATE TABLE project_pages (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
 
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
@@ -64,7 +98,13 @@ CREATE TABLE IF NOT EXISTS project_pages (
   data bytea NOT NULL
 );
 
-CREATE TABLE IF NOT EXISTS project_page_snapshots (
+CREATE INDEX project_pages__user_id__idx
+    ON project_pages(user_id);
+
+CREATE INDEX project_pages__file_id__idx
+    ON project_pages(file_id);
+
+CREATE TABLE project_page_snapshots (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
 
   user_id uuid NULL REFERENCES users(id) ON DELETE SET NULL,
@@ -81,18 +121,11 @@ CREATE TABLE IF NOT EXISTS project_page_snapshots (
   changes bytea NULL DEFAULT NULL
 );
 
--- Indexes
+CREATE INDEX project_page_snapshots__user_id__idx
+    ON project_page_snapshots(user_id);
 
-CREATE INDEX projects__user_id__idx ON projects(user_id);
-
-CREATE INDEX project_files__user_id__idx ON project_files(user_id);
-CREATE INDEX project_files__project_id__idx ON project_files(project_id);
-
-CREATE INDEX project_pages__user_id__idx ON project_pages(user_id);
-CREATE INDEX project_pages__file_id__idx ON project_pages(file_id);
-
-CREATE INDEX project_page_snapshots__page_id__idx ON project_page_snapshots(page_id);
-CREATE INDEX project_page_snapshots__user_id__idx ON project_page_snapshots(user_id);
+CREATE INDEX project_page_snapshots__page_id_id__idx
+    ON project_page_snapshots(page_id);
 
 -- Triggers
 

backend/resources/migrations/0004.tasks.sql

@@ -1,4 +1,6 @@
-CREATE TABLE IF NOT EXISTS tasks (
+--- Tables
+
+CREATE TABLE tasks (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
 
   created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
@@ -20,3 +22,20 @@ CREATE TABLE IF NOT EXISTS tasks (
 
 CREATE INDEX tasks__scheduled_at__queue__idx
     ON tasks (scheduled_at, queue);
+
+CREATE TABLE scheduled_tasks (
+  id text PRIMARY KEY,
+
+  created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
+  executed_at timestamptz NULL DEFAULT NULL,
+
+  cron_expr text NOT NULL
+);
+
+--- Triggers
+
+CREATE TRIGGER scheduled_tasks__modified_at__tgr
+BEFORE UPDATE ON scheduled_tasks
+   FOR EACH ROW EXECUTE PROCEDURE update_modified_at();
+

backend/resources/migrations/0005.images.sql

@@ -1,6 +1,4 @@
--- Tables
-
-CREATE TABLE IF NOT EXISTS image_collections (
+CREATE TABLE image_collections (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
 
@@ -11,9 +9,13 @@ CREATE TABLE IF NOT EXISTS image_collections (
   name text NOT NULL
 );
 
-CREATE TABLE IF NOT EXISTS images (
+CREATE INDEX image_collections__user_id__idx
+    ON image_collections(user_id);
+
+CREATE TABLE images (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+  collection_id uuid REFERENCES image_collections(id) ON DELETE CASCADE,
 
   created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
   modified_at timestamptz NOT NULL DEFAULT clock_timestamp(),
@@ -22,20 +24,16 @@ CREATE TABLE IF NOT EXISTS images (
   width int NOT NULL,
   height int NOT NULL,
   mimetype text NOT NULL,
-  collection_id uuid REFERENCES image_collections(id)
-                     ON DELETE SET NULL
-                     DEFAULT NULL,
+
   name text NOT NULL,
   path text NOT NULL
 );
 
--- Indexes
+CREATE INDEX images__user_id__idx
+    ON images(user_id);
 
-CREATE INDEX image_collections__user_id__idx ON image_collections (user_id);
-CREATE INDEX images__collection_id__idx ON images (collection_id);
-CREATE INDEX images__user_id__idx ON images (user_id);
-
--- Triggers
+CREATE INDEX images__collection_id__idx
+    ON images(collection_id);
 
 CREATE TRIGGER image_collections__modified_at__tgr
 BEFORE UPDATE ON image_collections

backend/resources/migrations/0006.icons.sql

@@ -1,6 +1,6 @@
 -- Tables
 
-CREATE TABLE IF NOT EXISTS icon_collections (
+CREATE TABLE icon_collections (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,
 
@@ -11,7 +11,7 @@ CREATE TABLE IF NOT EXISTS icon_collections (
   name text NOT NULL
 );
 
-CREATE TABLE IF NOT EXISTS icons (
+CREATE TABLE icons (
   id uuid PRIMARY KEY DEFAULT uuid_generate_v4(),
   user_id uuid NOT NULL REFERENCES users(id) ON DELETE CASCADE,