Optimise the amount of resources we'll keep - columns, indexes, types

Signed-off-by: Radoslav Dimitrov <radoslav@stacklok.com>

database/migrations/000061_user_invites.down.sql → database/migrations/000062_user_invites.down.sql

@@ -14,17 +14,10 @@
 
 BEGIN;
 
--- drop the indexes
-DROP INDEX IF EXISTS idx_user_invites_email;
+-- drop the index on the project column
 DROP INDEX IF EXISTS idx_user_invites_project;
-DROP INDEX IF EXISTS idx_user_invites_invitee;
-DROP INDEX IF EXISTS idx_user_invites_sponsor;
 
--- drop the table
+-- drop the user_invites table
 DROP TABLE IF EXISTS user_invites;
 
--- drop the types
-DROP TYPE IF EXISTS invite_status;
-DROP TYPE IF EXISTS user_role;
-
 COMMIT;

database/migrations/000062_user_invites.up.sql

@@ -0,0 +1,30 @@
+-- Copyright 2024 Stacklok, Inc
+--
+-- Licensed under the Apache License, Version 2.0 (the "License");
+-- you may not use this file except in compliance with the License.
+-- You may obtain a copy of the License at
+--
+--      http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+
+BEGIN;
+
+CREATE TABLE IF NOT EXISTS user_invites (
+    code          TEXT NOT NULL PRIMARY KEY,
+    email         TEXT NOT NULL,
+    role          TEXT NOT NULL DEFAULT 'viewer',
+    project       UUID NOT NULL REFERENCES projects(id) ON DELETE CASCADE,
+    sponsor       INTEGER NOT NULL REFERENCES users(id) ON DELETE CASCADE,
+    created_at    TIMESTAMP NOT NULL DEFAULT NOW(),
+    updated_at    TIMESTAMP NOT NULL DEFAULT NOW()
+);
+
+-- create an index on the project column
+CREATE INDEX IF NOT EXISTS idx_user_invites_project ON user_invites(project);
+
+COMMIT;